Analysis Run

{"no_findings":false,"summary":"One low-severity issue found from runtime bytecode (selector inference best-effort): the owner-only external token transfer path does not enforce the ERC20 boolean return value. No proxy/delegatecall behavior detected in the artifact.","findings":[{"severity":"low","category":"other","title":"ERC20 transfer return value not enforced in owner-only token transfer","exploit_scenario":"A privileged caller invokes the function at selector 0xb5c5f672 against a token that returns false instead of reverting. The low-level CALL succeeds and the transaction does not revert, but the transfer may not happen; if the caller or off-chain systems ignore the returned bool, they may assume funds moved when they did not. This is inferred from bytecode only; exact behavior depends on how the caller handles the return value.","recommendation":"After the CALL, require that return data is either empty or decodes to true (SafeERC20-style), reverting otherwise. If the intent is to allow false returns, explicitly document that callers must check the return value.","evidence":"Dispatcher selects 0xb5c5f672; the body builds calldata for selector 0xa9059cbb and executes CALL at pc:0x0593. Post-call logic checks success and returndatasize >= 32, loads the word, then jumps without comparing it to true (no EQ/ISZERO check).","locations":["pc:0x0593","selector:0xb5c5f672"]}]}

OpenAI Codex v0.77.0 (research preview)
--------
workdir: /tmp/codex-w0fmu5vv
model: gpt-5.2-codex
provider: openai
approval: never
sandbox: read-only
reasoning effort: high
reasoning summaries: auto
session id: 019be43e-7995-7181-90ce-79efc0693898
--------
user
You are a security auditor. You ONLY have runtime bytecode + analysis artifacts.
You MUST read `BYTECODE_BUNDLE.json` before concluding; it contains the bytecode summary,
evidence bundle, callsites, storage slots, and detector findings.

Special cases when reasoning from bytecode (be explicit about uncertainty):
- Selector inference is best-effort; missing selectors are common.
- Fallback/receive paths may be the only entrypoints.
- CALL vs DELEGATECALL semantics differ; DELEGATECALL executes in caller storage.
- Proxy patterns (EIP-1967, minimal proxies, beacon) change which storage is authoritative.
- Storage slots are raw; mappings/arrays appear via keccak patterns, names are unknown.
- Guard detection is heuristic; absence of guards does NOT mean unguarded.
- Returndata checking is unknown unless explicitly shown in evidence.
- Precompiles (0x1..0x9) and common ERC20 transfer selectors may appear; do not over-claim.

Output MUST be valid JSON matching the provided schema.
- If you find nothing meaningful: set no_findings=true and findings=[].
- Otherwise: set no_findings=false and include findings with severity/category/title.
- Locations can be pc references like "pc:0x123" or selectors like "selector:0xa9059cbb".

Focus on: reentrancy, access control, upgradeability/proxy issues, signature validation,
accounting/invariant breaks, dangerous delegatecall, and untrusted external calls.
Be conservative: if evidence is weak, mark severity low/medium and explain why.
mcp startup: no servers

thinking
**Reading BYTECODE_BUNDLE.json**
exec
/bin/bash -lc ls in /tmp/codex-w0fmu5vv succeeded in 8ms:
BYTECODE_BUNDLE.json
codex-output-schema.json
exec
/bin/bash -lc 'cat BYTECODE_BUNDLE.json' in /tmp/codex-w0fmu5vv succeeded in 9ms:
{
  "analysis_artifact": {
    "address": "0x8bd458e3950f8a9cbe67ea55cbc209ead43b46f4",
    "artifact_hash": "0x9bedc91042e3858401995cac7b61272ecfdf87e03908511c5c02a44c3c6ff484",
    "artifact_json": {
      "auth": {
        "guards": [
          {
            "pc": 814,
            "type": "msg_sender_eq_const",
            "value": "0xffffffffffffffffffffffffffffffffffffffff"
          }
        ]
      },
      "basic_blocks": [
        {
          "end_pc": 11,
          "hash": "0x7ba4403ad8c2da27f36a99883d9bd6831f00a99722adb0e607c72478344873a4",
          "opcodes": [
            "PUSH1",

thinking
**Investigating call instruction at PC 1427**

I'm searching the artifact for evidence of a call instruction at program counter 1427 to analyze related bytecode and callsite info, aiming to extract relevant findings for the JSON schema.
exec
/bin/bash -lc 'rg -n "pc": 1427 -C 3 BYTECODE_BUNDLE.json' in /tmp/codex-w0fmu5vv exited 2 in 13ms:
rg: 1427: No such file or directory (os error 2)

thinking
**Adjusting search syntax for escape characters**

I'm refining the search command to correctly handle the escaped quote character within the search string by using proper escaping in ripgrep.
exec
/bin/bash -lc "rg -n \"pc\\\": 1427\" BYTECODE_BUNDLE.json" in /tmp/codex-w0fmu5vv succeeded in 19ms:
1392:          "pc": 1427,
3106:          "pc": 1427,
3168:            "pc": 1427,
3212:            "pc": 1427,

thinking
**Searching for basic block containing target pc**

I'm narrowing down to the basic block around pc 1427 by searching for "start_pc": 1424 or similar in the JSON, then planning to extract and inspect its opcodes via Python for precise analysis.
exec
/bin/bash -lc "python - <<'PY'
import json
import sys
path='BYTECODE_BUNDLE.json'
with open(path) as f:
    data=json.load(f)
blocks=data['analysis_artifact']['artifact_json']['basic_blocks']
for b in blocks:
    if b['start_pc']<=1427<=b['end_pc']:
        print('block',b['start_pc'],b['end_pc'])
        print(b['opcodes'])
        break
PY" in /tmp/codex-w0fmu5vv succeeded in 41ms:
block 1424 1434
['JUMPDEST', 'POP', 'GAS', 'CALL', 'ISZERO', 'OP_80', 'ISZERO', 'PUSH2', 'JUMPI']

thinking
**Inspecting surrounding code blocks**

I'm checking blocks near the call at pc 1427, including the previous block around start_pc 1420, to understand the setup and follow-up context. Next, I'll extract and print these blocks for clearer analysis.
exec
/bin/bash -lc "python - <<'PY'
import json
path='BYTECODE_BUNDLE.json'
with open(path) as f:
    data=json.load(f)
blocks=data['analysis_artifact']['artifact_json']['basic_blocks']
# get blocks with start_pc between 1400-1466
for b in blocks:
    if 1400<=b['start_pc']<=1466:
        print('block',b['start_pc'],b['end_pc'])
        print(b['opcodes'])
PY" in /tmp/codex-w0fmu5vv succeeded in 27ms:
block 1420 1423
['PUSH1', 'OP_80', 'REVERT']
block 1424 1434
['JUMPDEST', 'POP', 'GAS', 'CALL', 'ISZERO', 'OP_80', 'ISZERO', 'PUSH2', 'JUMPI']
block 1435 1443
['RETURNDATASIZE', 'PUSH1', 'OP_80', 'RETURNDATACOPY', 'RETURNDATASIZE', 'PUSH1', 'REVERT']
block 1444 1461
['JUMPDEST', 'POP', 'POP', 'POP', 'POP', 'PUSH1', 'MLOAD', 'RETURNDATASIZE', 'PUSH1', 'OP_81', 'LT', 'ISZERO', 'PUSH2', 'JUMPI']
block 1462 1465
['PUSH1', 'OP_80', 'REVERT']
block 1466 1492
['JUMPDEST', 'OP_81', 'ADD', 'OP_90', 'OP_80', 'OP_80', 'MLOAD', 'OP_90', 'PUSH1', 'ADD', 'OP_90', 'OP_92', 'OP_91', 'OP_90', 'POP', 'POP', 'POP', 'OP_91', 'POP', 'POP', 'OP_93', 'OP_92', 'POP', 'POP', 'POP', 'JUMP']


thinking
**Analyzing suspicious self-call and msg.sender guard**

There’s a possibly constant CALL target pointing to the contract itself that might represent an internal fallback or forwarding function handling calls with value. The code also checks if msg.sender equals the impossible all-ones address, likely as a guard causing revert, hinting at restrictive access controls. Next is mapping function selectors to entry points to clarify the call behaviors.
thinking
**Interpreting function selector mapping and call block**

The so-called entry_pc values actually encode function selectors, not code offsets, so mapping selectors to bytecode positions isn’t straightforward. The call is likely inside a large function spanning bytecode 1147 to 1419, suggesting an execute-style function handling arbitrary calls. Next, I'll extract and interpret opcodes in that range to understand call setup and access checks.
exec
/bin/bash -lc "python - <<'PY'
import json
path='BYTECODE_BUNDLE.json'
with open(path) as f:
    data=json.load(f)
blocks=data['analysis_artifact']['artifact_json']['basic_blocks']
for b in blocks:
    if b['start_pc']==1147:
        print('block',b['start_pc'],b['end_pc'])
        ops=b['opcodes']
        print('len',len(ops))
        # print with indices
        for i,op in enumerate(ops):
            if i<120:
                print(i,op)
        break
PY" in /tmp/codex-w0fmu5vv succeeded in 38ms:
block 1147 1419
len 88
0 JUMPDEST
1 OP_90
2 POP
3 OP_84
4 PUSH20
5 AND
6 PUSH32
7 OP_82
8 PUSH1
9 MLOAD
10 OP_80
11 OP_82
12 OP_81
13 MSTORE
14 PUSH1
15 ADD
16 OP_91
17 POP


thinking
**Analyzing conditional contract call and protection**

The code inspects a storage slot likely holding the owner or target address, uses EXTCODESIZE to verify the target is a contract, and conditionally jumps to revert if not; this confirms a guard before preparing call data for a contract call.
thinking
**Mapping function selectors and call patterns**

Identified several known and unknown function selectors and observed dispatch logic routing calls based on selectors; noted the external call at block 1147 targets a constant (likely the contract itself) without clear owner guard, raising potential for unguarded self-calls and reentrancy concerns.
exec
/bin/bash -lc "python - <<'PY'
import json
with open('BYTECODE_BUNDLE.json') as f:
    data=json.load(f)
blocks=data['analysis_artifact']['artifact_json']['basic_blocks']
for b in blocks:
    if b['start_pc'] in (842,852,863,1060,1080,1102,1133):
        print('block',b['start_pc'],b['end_pc'])
        print(b['opcodes'])
PY" in /tmp/codex-w0fmu5vv succeeded in 33ms:
block 842 851
['JUMPDEST', 'PUSH1', 'PUSH2', 'PUSH2', 'JUMP']
block 852 858
['JUMPDEST', 'ISZERO', 'ISZERO', 'PUSH2', 'JUMPI']
block 863 1055
['JUMPDEST', 'PUSH1', 'PUSH2', 'OP_83', 'PUSH2', 'OP_86', 'PUSH1', 'PUSH1', 'OP_90', 'SLOAD', 'OP_90', 'PUSH2', 'EXP', 'OP_90', 'DIV', 'PUSH20', 'AND', 'PUSH20', 'AND', 'PUSH4', 'ADDRESS', 'PUSH1', 'MLOAD', 'OP_82', 'PUSH4', 'AND', 'PUSH29', 'MUL', 'OP_81', 'MSTORE', 'PUSH1', 'ADD', 'OP_80', 'OP_82', 'PUSH20', 'AND', 'PUSH20', 'AND', 'OP_81', 'MSTORE', 'PUSH1', 'ADD', 'OP_91', 'POP', 'POP', 'PUSH1', 'PUSH1', 'MLOAD', 'OP_80', 'OP_83', 'SUB', 'OP_81', 'OP_86', 'OP_80', 'EXTCODESIZE', 'ISZERO', 'OP_80', 'ISZERO', 'PUSH2', 'JUMPI']
block 1060 1070
['JUMPDEST', 'POP', 'GAS', 'STATICCALL', 'ISZERO', 'OP_80', 'ISZERO', 'PUSH2', 'JUMPI']
block 1080 1097
['JUMPDEST', 'POP', 'POP', 'POP', 'POP', 'PUSH1', 'MLOAD', 'RETURNDATASIZE', 'PUSH1', 'OP_81', 'LT', 'ISZERO', 'PUSH2', 'JUMPI']
block 1102 1132
['JUMPDEST', 'OP_81', 'ADD', 'OP_90', 'OP_80', 'OP_80', 'MLOAD', 'OP_90', 'PUSH1', 'ADD', 'OP_90', 'OP_92', 'OP_91', 'OP_90', 'POP', 'POP', 'POP', 'PUSH2', 'OP_90', 'OP_91', 'OP_90', 'PUSH4', 'AND', 'JUMP']
block 1133 1146
['JUMPDEST', 'PUSH2', 'OP_90', 'OP_91', 'OP_90', 'PUSH4', 'AND', 'JUMP']

thinking
**Analyzing external calls and storage usage**

The code has two external calls: a STATICCALL possibly preceded by an EXTCODESIZE contract check, and a CALL later. To understand these calls' purpose, inspecting storage slots is needed, so I'll search the JSON for storage-related entries next.
exec
/bin/bash -lc 'rg -n "storage" BYTECODE_BUNDLE.json | head' in /tmp/codex-w0fmu5vv succeeded in 7ms:
1757:          "storage": {
1817:          "storage": {
1877:          "storage": {
1937:          "storage": {
1997:          "storage": {
2057:          "storage": {
2117:      "storage": {

thinking
**Inspecting evidence bundle storage section**
exec
/bin/bash -lc "python - <<'PY'
import json
with open('BYTECODE_BUNDLE.json') as f:
    data=json.load(f)
# find storage section
for k,v in data.items():
    if k=='evidence_bundle':
        print('evidence_bundle keys',v.keys())
        print('storage keys',v.get('storage',{}).keys())
        print(json.dumps(v.get('storage',{}),indent=2)[:2000])
        break
else:
    print('no evidence_bundle')
PY" in /tmp/codex-w0fmu5vv succeeded in 38ms:
no evidence_bundle

thinking
**Searching for storage keys in data structures**

I'm checking if the key "storage" appears nested inside "analysis_artifact" or related objects to locate the evidence_bundle or relevant storage information.
exec
/bin/bash -lc "python - <<'PY'
import json
from collections import deque
with open('BYTECODE_BUNDLE.json') as f:
    data=json.load(f)

# recursive search for 'storage' keys
paths=[]

def walk(obj, path):
    if isinstance(obj, dict):
        for k,v in obj.items():
            newpath=path+[k]
            if k=='storage':
                paths.append(newpath)
            walk(v,newpath)
    elif isinstance(obj, list):
        for i,v in enumerate(obj):
            walk(v,path+[i])

walk(data,[])
print('storage paths:',paths[:10])
print('count',len(paths))
# print one storage section
if paths:
    p=paths[0]
    obj=data
    for key in p:
        obj=obj[key]
    import json
    print('sample storage section:')
    print(json.dumps(obj,indent=2)[:2000])
PY" in /tmp/codex-w0fmu5vv succeeded in 31ms:
storage paths: [['analysis_artifact', 'artifact_json', 'functions', 0, 'storage'], ['analysis_artifact', 'artifact_json', 'functions', 1, 'storage'], ['analysis_artifact', 'artifact_json', 'functions', 2, 'storage'], ['analysis_artifact', 'artifact_json', 'functions', 3, 'storage'], ['analysis_artifact', 'artifact_json', 'functions', 4, 'storage'], ['analysis_artifact', 'artifact_json', 'functions', 5, 'storage'], ['analysis_artifact', 'artifact_json', 'storage']]
count 7
sample storage section:
{
  "reads": 9,
  "slots": [
    {
      "op": "SLOAD",
      "pc": 552,
      "slot": "0x0000000000000000000000000000000000000000000000000000000000000000"
    },
    {
      "op": "SLOAD",
      "pc": 721,
      "slot": "0x0000000000000000000000000000000000000000000000000000000000000000"
    },
    {
      "op": "SLOAD",
      "pc": 762,
      "slot": "0x0000000000000000000000000000000000000000000000000000000000000000"

thinking
**Inspecting functions array**

I'm examining the functions list inside analysis_artifact.artifact_json to understand what storage info each function holds.
exec
/bin/bash -lc "python - <<'PY'
import json
with open('BYTECODE_BUNDLE.json') as f:
    data=json.load(f)
funcs=data['analysis_artifact']['artifact_json']['functions']
print('functions count',len(funcs))
for i,f in enumerate(funcs):
    print(i, f.get('selector'), 'entry_pc', f.get('entry_pc'))
    if 'storage' in f:
        print(' storage reads',f['storage'].get('reads'), 'writes',f['storage'].get('writes'))
        print(' slots', [s['slot'] for s in f['storage'].get('slots',[])])
PY" in /tmp/codex-w0fmu5vv succeeded in 28ms:
functions count 6
0 0x715018a6 entry_pc 2376452955
 storage reads 9 writes 2
 slots ['0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000']
1 0x8da5cb5b entry_pc 2402473371
 storage reads 9 writes 2
 slots ['0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000']
2 0x8f32d59b entry_pc 3049649778
 storage reads 9 writes 2
 slots ['0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000']
3 0xb5c5f672 entry_pc 3132383833
 storage reads 9 writes 2
 slots ['0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000']
4 0xbab46259 entry_pc 4076725131
 storage reads 9 writes 2
 slots ['0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000']
5 0xf2fde38b entry_pc 0
 storage reads 9 writes 2
 slots ['0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000', '0x0000000000000000000000000000000000000000000000000000000000000000']

thinking
**Inspecting overall storage usage field**
exec
/bin/bash -lc "python - <<'PY'
import json
with open('BYTECODE_BUNDLE.json') as f:
    data=json.load(f)
print(json.dumps(data['analysis_artifact']['artifact_json']['storage'],indent=2)[:2000])
PY" in /tmp/codex-w0fmu5vv succeeded in 27ms:
{
  "keccak_count": 1,
  "reads": 9,
  "slots": [
    {
      "op": "SLOAD",
      "pc": 552,
      "slot": "0x0000000000000000000000000000000000000000000000000000000000000000"
    },
    {
      "op": "SLOAD",
      "pc": 721,
      "slot": "0x0000000000000000000000000000000000000000000000000000000000000000"
    },
    {
      "op": "SLOAD",
      "pc": 762,
      "slot": "0x0000000000000000000000000000000000000000000000000000000000000000"
    },
    {


thinking
**Analyzing function selectors and calldata structure**

Only storage slot 0 is used, likely for ownership, suggesting a simple Ownable pattern with extras. The decoded calldata for an unknown function shows three parameters: an address (masked) plus two others, hinting at a function with three args rather than a simple transferOwnership (which usually takes one address). This suggests these selectors correspond to custom or complex functions, not standard ones like isValidSignature or execute.
thinking
**Mapping dispatcher jump destinations to functions**

Identified dispatcher uses cascading selector comparisons jumping to specific offsets like 132, 216, 523, etc. Notably, the block at 523 modifies storage slot 0 and emits logs, indicating it likely implements ownership transfer or renouncement. Other jump destinations correspond to functions returning address or bool. Next, detailed opcode inspection of block 523 will clarify its exact role.
exec
/bin/bash -lc "python - <<'PY'
import json
with open('BYTECODE_BUNDLE.json') as f:
    data=json.load(f)
for b in data['analysis_artifact']['artifact_json']['basic_blocks']:
    if b['start_pc']==523:
        print('block',b['start_pc'],b['end_pc'])
        for i,op in enumerate(b['opcodes']):
            print(i,op)
        break
PY" in /tmp/codex-w0fmu5vv succeeded in 35ms:
block 523 713
0 JUMPDEST
1 PUSH1
2 PUSH20
3 AND
4 PUSH1
5 OP_80
6 OP_90
7 SLOAD
8 OP_90
9 PUSH2
10 EXP
11 OP_90
12 DIV
13 PUSH20
14 AND
15 PUSH20
16 AND
17 PUSH32
18 PUSH1


thinking
**Analyzing ownership logic**

The code uses storage slot 0 to hold the owner and logs OwnershipTransferred events when updating it, indicating typical Ownable behavior. The blocks around 714 return the owner address, while block 755 performs a boolean check if msg.sender equals owner, likely implementing an isOwner() style internal check that returns a bool without reverting.
thinking
**Mapping ownership check and call setup**

The code includes a revert sequence after an ownership check likely implementing the onlyOwner modifier via jumps to the internal check at 755. There's also evidence of a complex function that loads three call data parameters consistent with an execute(address,uint256,bytes) signature, followed by blocks handling dynamic bytes calldata copying and forwarding calls to a target, worth deeper inspection from blocks 1493 to 1725.
exec
/bin/bash -lc "python - <<'PY'
import json
with open('BYTECODE_BUNDLE.json') as f:
    data=json.load(f)
blocks=data['analysis_artifact']['artifact_json']['basic_blocks']
for b in blocks:
    if 1493<=b['start_pc']<=1725:
        print('block',b['start_pc'],b['end_pc'])
        print(b['opcodes'])
PY" in /tmp/codex-w0fmu5vv succeeded in 29ms:
block 1493 1530
['JUMPDEST', 'PUSH1', 'PUSH1', 'OP_90', 'SLOAD', 'OP_90', 'PUSH2', 'EXP', 'OP_90', 'DIV', 'PUSH20', 'AND', 'OP_81', 'JUMP']
block 1531 1538
['JUMPDEST', 'PUSH2', 'PUSH2', 'JUMP']
block 1539 1545
['JUMPDEST', 'ISZERO', 'ISZERO', 'PUSH2', 'JUMPI']
block 1546 1549
['PUSH1', 'OP_80', 'REVERT']
block 1550 1558
['JUMPDEST', 'PUSH2', 'OP_81', 'PUSH2', 'JUMP']
block 1559 1561
['JUMPDEST', 'POP', 'JUMP']
block 1562 1572
['JUMPDEST', 'PUSH1', 'OP_80', 'OP_83', 'EQ', 'ISZERO', 'PUSH2', 'JUMPI']
block 1573 1580
['PUSH1', 'OP_90', 'POP', 'PUSH2', 'JUMP']
block 1581 1598
['JUMPDEST', 'PUSH1', 'OP_82', 'OP_84', 'MUL', 'OP_90', 'POP', 'OP_82', 'OP_84', 'OP_82', 'OP_81', 'ISZERO', 'ISZERO', 'PUSH2', 'JUMPI']
block 1599 1599
['INVALID']

thinking
**Noticing repeated blocks suggesting signature verification**

There appear to be multiple blocks around require statements, possibly due to signature verification or a loop, prompting further inspection of specific blocks like 1726 and 1915.
exec
/bin/bash -lc "python - <<'PY'
import json
with open('BYTECODE_BUNDLE.json') as f:
    data=json.load(f)
blocks=data['analysis_artifact']['artifact_json']['basic_blocks']
for b in blocks:
    if 1726<=b['start_pc']<=1917:
        print('block',b['start_pc'],b['end_pc'])
        print(b['opcodes'])
PY" in /tmp/codex-w0fmu5vv succeeded in 28ms:
block 1726 1915
['JUMPDEST', 'OP_80', 'PUSH20', 'AND', 'PUSH1', 'OP_80', 'OP_90', 'SLOAD', 'OP_90', 'PUSH2', 'EXP', 'OP_90', 'DIV', 'PUSH20', 'AND', 'PUSH20', 'AND', 'PUSH32', 'PUSH1', 'MLOAD', 'PUSH1', 'MLOAD', 'OP_80', 'OP_91', 'SUB', 'OP_90', 'OP_A3', 'OP_80', 'PUSH1', 'OP_80', 'PUSH2', 'EXP', 'OP_81', 'SLOAD', 'OP_81', 'PUSH20', 'MUL', 'NOT', 'AND', 'OP_90', 'OP_83', 'PUSH20', 'AND', 'MUL', 'OR', 'OP_90', 'SSTORE', 'POP', 'POP', 'JUMP']
block 1916 1916
['INVALID']
block 1917 1951
['OP_A1', 'PUSH6', 'SHA3', 'EXTCODESIZE', 'PUSH19', 'OP_D6', 'OP_4B', 'OP_F8', 'OP_2D', 'PUSH14']


thinking
**Identifying potential access control and external call risks**

I'm noting the contract seems ownable with an external call preceded by an EXTCODESIZE check, possibly verifying contract code presence before calling an owner-derived target. This suggests reentrancy or access control concerns around that external call require close analysis next.
thinking
**Analyzing calldata construction and identifying function selectors**

I'm seeing the contract builds calldata dynamically to call an owner address from storage, possibly using known selectors like execute or isValidSignature. Next, I'll try to confirm function selectors by offline keccak hashing of candidate signatures to clarify key external calls.
exec
/bin/bash -lc "python - <<'PY'
import importlib,sys
for m in ['eth_utils','sha3','Crypto']:
    try:
        importlib.import_module(m)
        print('have',m)
    except Exception as e:
        print('no',m, e.__class__.__name__)
PY" in /tmp/codex-w0fmu5vv succeeded in 242ms:
have eth_utils
no sha3 ModuleNotFoundError
have Crypto

thinking
**Planning selector-based function name inference**

I'll use eth_utils to compute selectors for common function signatures and compare them against unknown selectors to guess function names by pattern matching.
exec
/bin/bash -lc "python - <<'PY'
from eth_utils import keccak

def sel(sig):
    return keccak(text=sig)[:4].hex()

candidates=[
    'execute(address,uint256,bytes)',
    'executeCall(address,uint256,bytes)',
    'call(address,uint256,bytes)',
    'forward(address,uint256,bytes)',
    'forwardCall(address,uint256,bytes)',
    'execute(address,bytes)',
    'execute(bytes)',
    'execute(address,uint256,bytes,bytes)',
    'isValidSignature(bytes32,bytes)',
    'isValidSignature(bytes,bytes)',
    'supportsInterface(bytes4)',
    'nonce()',
    'getNonce()',
    'getOwner()',
    'owner()',
    'transferOwnership(address)',
    'renounceOwnership()',
    'upgradeTo(address)',
    'upgradeToAndCall(address,bytes)',
    'setOwner(address)',
    'setOwner(address,uint256)',
    'setOwner(address,bool)',
    'setOwner(address,bytes)',
    'setImplementation(address)',
    'implementation()',
    'admin()',
]
for sig in candidates:
    print(sig, sel(sig))
PY" in /tmp/codex-w0fmu5vv succeeded in 229ms:
execute(address,uint256,bytes) b61d27f6
executeCall(address,uint256,bytes) 9e5d4c49
call(address,uint256,bytes) 6dbf2fa0
forward(address,uint256,bytes) d7f31eb9
forwardCall(address,uint256,bytes) 6effec50
execute(address,bytes) 1cff79cd
execute(bytes) 09c5eabe
execute(address,uint256,bytes,bytes) da0980c7
isValidSignature(bytes32,bytes) 1626ba7e
isValidSignature(bytes,bytes) 20c13b0b
supportsInterface(bytes4) 01ffc9a7
nonce() affed0e0
getNonce() d087d288
getOwner() 893d20e8
owner() 8da5cb5b
transferOwnership(address) f2fde38b
renounceOwnership() 715018a6
upgradeTo(address) 3659cfe6
upgradeToAndCall(address,bytes) 4f1ef286
setOwner(address) 13af4035


thinking
**Analyzing unknown function selectors**

I'm comparing unknown selectors against known ERC-4337 and related contract functions but haven't matched them yet; next, I'll precisely compute selectors from suspected signatures to identify their source.
thinking
**Considering EIP-6551 and proxies**

I'm comparing selectors to EIP-6551 and proxy-related functions but still not finding matches; next, I'll search for raw bytecode or dispatcher constants to identify selectors directly from the contract.
exec
/bin/bash -lc 'rg -n "bytecode" BYTECODE_BUNDLE.json | head -n 20' in /tmp/codex-w0fmu5vv succeeded in 8ms:
2199:    "runtime_bytecode": {
exec
/bin/bash -lc "python - <<'PY'
import json
with open('BYTECODE_BUNDLE.json') as f:
    data=json.load(f)
rb=data.get('runtime_bytecode')
print(rb.keys())
print('len',len(rb.get('hex','')))
print(rb.get('hex','')[:120])
PY" in /tmp/codex-w0fmu5vv exited 1 in 35ms:
Traceback (most recent call last):
  File "<stdin>", line 5, in <module>
AttributeError: 'NoneType' object has no attribute 'keys'

thinking
**Searching for runtime_bytecode context**
exec
/bin/bash -lc "python - <<'PY'
import json
with open('BYTECODE_BUNDLE.json') as f:
    data=json.load(f)
# find runtime_bytecode recursively
paths=[]

def walk(obj,path):
    if isinstance(obj,dict):
        for k,v in obj.items():
            if k=='runtime_bytecode':
                paths.append(path+[k])
            walk(v,path+[k])
    elif isinstance(obj,list):
        for i,v in enumerate(obj):
            walk(v,path+[i])

walk(data,[])
print('paths',paths)
if paths:
    p=paths[0]
    obj=data
    for key in p:
        obj=obj[key]
    print('runtime keys',obj.keys())
    print('hex prefix',obj.get('hex','')[:100])
    print('hex len',len(obj.get('hex','')))
PY" in /tmp/codex-w0fmu5vv succeeded in 37ms:
paths [['artifact', 'runtime_bytecode']]
runtime keys dict_keys(['full', 'head', 'length', 'tail', 'truncated'])
hex prefix 
hex len 0

thinking
**Inspecting artifact runtime_bytecode**

I found the artifact's runtime_bytecode key is present but empty in hex, suggesting possible truncation or omission; next, I'll explore the artifact section further to confirm its completeness.
exec
/bin/bash -lc "python - <<'PY'
import json
with open('BYTECODE_BUNDLE.json') as f:
    data=json.load(f)
print(data.keys())
print('artifact keys', data.get('artifact',{}).keys())
print(json.dumps(data.get('artifact',{}),indent=2)[:1000])
PY" in /tmp/codex-w0fmu5vv succeeded in 26ms:
dict_keys(['analysis_artifact', 'analysis_run', 'artifact', 'capability_graph', 'detector_findings', 'heuristics_summary'])
artifact keys dict_keys(['codehash', 'compiler_json', 'implementation_address', 'is_proxy', 'runtime_bytecode', 'verified_source'])
{
  "codehash": "0x382c2960b95f2508e106d4410243b37afabcd9e526aa3ab29871201a25f1cbd1",
  "compiler_json": {
    "compiler_version": null,
    "etherscan": {
      "contract_name": null,
      "implementation": null,
      "license": "Unknown",
      "proxy": "0",
      "swarm_source": null
    },
    "optimizer_enabled": false,
    "optimizer_runs": 0,
    "proxy_evidence": {
      "status": "not_proxy"
    }
  },
  "implementation_address": null,

thinking
**Planning custom Python EVM disassembler**

I'll write a Python script to decode EVM bytecode into instructions and constants, aiming to map function selectors to code offsets for analysis.
exec
/bin/bash -lc "python - <<'PY'
import binascii, json
from pathlib import Path

with open('BYTECODE_BUNDLE.json') as f:
    data=json.load(f)
code=data['artifact']['runtime_bytecode']['full']
if code.startswith('0x'): code=code[2:]
bytecode=bytes.fromhex(code)

# simple disassembler to extract dispatcher mapping
# We'll parse until first JUMPDEST after dispatcher maybe

# opcode map
opcodes={
    0x00:'STOP',0x01:'ADD',0x02:'MUL',0x03:'SUB',0x04:'DIV',0x05:'SDIV',0x06:'MOD',0x07:'SMOD',0x08:'ADDMOD',0x09:'MULMOD',0x0a:'EXP',0x0b:'SIGNEXTEND',
    0x10:'LT',0x11:'GT',0x12:'SLT',0x13:'SGT',0x14:'EQ',0x15:'ISZERO',0x16:'AND',0x17:'OR',0x18:'XOR',0x19:'NOT',0x1a:'BYTE',0x1b:'SHL',0x1c:'SHR',0x1d:'SAR',
    0x20:'SHA3',
    0x30:'ADDRESS',0x31:'BALANCE',0x32:'ORIGIN',0x33:'CALLER',0x34:'CALLVALUE',0x35:'CALLDATALOAD',0x36:'CALLDATASIZE',0x37:'CALLDATACOPY',0x38:'CODESIZE',0x39:'CODECOPY',0x3a:'GASPRICE',0x3b:'EXTCODESIZE',0x3c:'EXTCODECOPY',0x3d:'RETURNDATASIZE',0x3e:'RETURNDATACOPY',0x3f:'EXTCODEHASH',
    0x40:'BLOCKHASH',0x41:'COINBASE',0x42:'TIMESTAMP',0x43:'NUMBER',0x44:'DIFFICULTY',0x45:'GASLIMIT',0x46:'CHAINID',0x47:'SELFBALANCE',0x48:'BASEFEE',
    0x50:'POP',0x51:'MLOAD',0x52:'MSTORE',0x53:'MSTORE8',0x54:'SLOAD',0x55:'SSTORE',0x56:'JUMP',0x57:'JUMPI',0x58:'PC',0x59:'MSIZE',0x5a:'GAS',0x5b:'JUMPDEST',
    0x60:'PUSH1',0x61:'PUSH2',0x62:'PUSH3',0x63:'PUSH4',0x64:'PUSH5',0x65:'PUSH6',0x66:'PUSH7',0x67:'PUSH8',0x68:'PUSH9',0x69:'PUSH10',0x6a:'PUSH11',0x6b:'PUSH12',0x6c:'PUSH13',0x6d:'PUSH14',0x6e:'PUSH15',0x6f:'PUSH16',
    0x70:'PUSH17',0x71:'PUSH18',0x72:'PUSH19',0x73:'PUSH20',0x74:'PUSH21',0x75:'PUSH22',0x76:'PUSH23',0x77:'PUSH24',0x78:'PUSH25',0x79:'PUSH26',0x7a:'PUSH27',0x7b:'PUSH28',0x7c:'PUSH29',0x7d:'PUSH30',0x7e:'PUSH31',0x7f:'PUSH32',
    0x80:'DUP1',0x81:'DUP2',0x82:'DUP3',0x83:'DUP4',0x84:'DUP5',0x85:'DUP6',0x86:'DUP7',0x87:'DUP8',0x88:'DUP9',0x89:'DUP10',0x8a:'DUP11',0x8b:'DUP12',0x8c:'DUP13',0x8d:'DUP14',0x8e:'DUP15',0x8f:'DUP16',
    0x90:'SWAP1',0x91:'SWAP2',0x92:'SWAP3',0x93:'SWAP4',0x94:'SWAP5',0x95:'SWAP6',0x96:'SWAP7',0x97:'SWAP8',0x98:'SWAP9',0x99:'SWAP10',0x9a:'SWAP11',0x9b:'SWAP12',0x9c:'SWAP13',0x9d:'SWAP14',0x9e:'SWAP15',0x9f:'SWAP16',
    0xa0:'LOG0',0xa1:'LOG1',0xa2:'LOG2',0xa3:'LOG3',0xa4:'LOG4',
    0xf0:'CREATE',0xf1:'CALL',0xf2:'CALLCODE',0xf3:'RETURN',0xf4:'DELEGATECALL',0xf5:'CREATE2',0xfa:'STATICCALL',0xfd:'REVERT',0xfe:'INVALID',0xff:'SELFDESTRUCT'
}

# disassemble initial part to find dispatcher
pc=0
instrs=[]
while pc<len(bytecode):
    op=bytecode[pc]
    name=opcodes.get(op, f'OP_{op:02x}')
    pc_next=pc+1
    imm=None
    if 0x60<=op<=0x7f:
        n=op-0x5f
        imm=bytecode[pc_next:pc_next+n]
        pc_next+=n
    instrs.append((pc,name,imm))
    pc=pc_next
    if pc>400: # only first chunk for dispatcher
        break

# print first 150 instructions
for pc,name,imm in instrs[:120]:
    if imm is None:
        print(f\"{pc:04x}: {name}\")
    else:
        print(f\"{pc:04x}: {name} 0x{imm.hex()}\")

# find PUSH4 selectors in dispatcher area
print('\\nSelectors in first 200 bytes:')
for pc,name,imm in instrs:
    if name=='PUSH4':
        print(pc, imm.hex())
PY" in /tmp/codex-w0fmu5vv succeeded in 40ms:
0000: PUSH1 0x80
0002: PUSH1 0x40
0004: MSTORE
0005: CALLVALUE
0006: DUP1
0007: ISZERO
0008: PUSH2 0x0010
000b: JUMPI
000c: PUSH1 0x00
000e: DUP1
000f: REVERT
0010: JUMPDEST
0011: POP
0012: PUSH1 0x04
0014: CALLDATASIZE
0015: LT
0016: PUSH2 0x007f
0019: JUMPI
001a: PUSH1 0x00
001c: CALLDATALOAD

thinking
**Mapping runtime bytecode functions**

I'm planning to disassemble around key program counters like 0x00d8 and 0x01f8 to identify function boundaries and internal calls, aiming to script annotated disassembly of each function for clearer input decoding and logic mapping.
exec
/bin/bash -lc "python - <<'PY'
import json
from eth_utils import keccak

with open('BYTECODE_BUNDLE.json') as f:
    data=json.load(f)
code=data['artifact']['runtime_bytecode']['full']
code=code[2:]
bytecode=bytes.fromhex(code)

opcodes={
    0x00:'STOP',0x01:'ADD',0x02:'MUL',0x03:'SUB',0x04:'DIV',0x05:'SDIV',0x06:'MOD',0x07:'SMOD',0x08:'ADDMOD',0x09:'MULMOD',0x0a:'EXP',0x0b:'SIGNEXTEND',
    0x10:'LT',0x11:'GT',0x12:'SLT',0x13:'SGT',0x14:'EQ',0x15:'ISZERO',0x16:'AND',0x17:'OR',0x18:'XOR',0x19:'NOT',0x1a:'BYTE',0x1b:'SHL',0x1c:'SHR',0x1d:'SAR',
    0x20:'SHA3',
    0x30:'ADDRESS',0x31:'BALANCE',0x32:'ORIGIN',0x33:'CALLER',0x34:'CALLVALUE',0x35:'CALLDATALOAD',0x36:'CALLDATASIZE',0x37:'CALLDATACOPY',0x38:'CODESIZE',0x39:'CODECOPY',0x3a:'GASPRICE',0x3b:'EXTCODESIZE',0x3c:'EXTCODECOPY',0x3d:'RETURNDATASIZE',0x3e:'RETURNDATACOPY',0x3f:'EXTCODEHASH',
    0x40:'BLOCKHASH',0x41:'COINBASE',0x42:'TIMESTAMP',0x43:'NUMBER',0x44:'DIFFICULTY',0x45:'GASLIMIT',0x46:'CHAINID',0x47:'SELFBALANCE',0x48:'BASEFEE',
    0x50:'POP',0x51:'MLOAD',0x52:'MSTORE',0x53:'MSTORE8',0x54:'SLOAD',0x55:'SSTORE',0x56:'JUMP',0x57:'JUMPI',0x58:'PC',0x59:'MSIZE',0x5a:'GAS',0x5b:'JUMPDEST',
    0x60:'PUSH1',0x61:'PUSH2',0x62:'PUSH3',0x63:'PUSH4',0x64:'PUSH5',0x65:'PUSH6',0x66:'PUSH7',0x67:'PUSH8',0x68:'PUSH9',0x69:'PUSH10',0x6a:'PUSH11',0x6b:'PUSH12',0x6c:'PUSH13',0x6d:'PUSH14',0x6e:'PUSH15',0x6f:'PUSH16',
    0x70:'PUSH17',0x71:'PUSH18',0x72:'PUSH19',0x73:'PUSH20',0x74:'PUSH21',0x75:'PUSH22',0x76:'PUSH23',0x77:'PUSH24',0x78:'PUSH25',0x79:'PUSH26',0x7a:'PUSH27',0x7b:'PUSH28',0x7c:'PUSH29',0x7d:'PUSH30',0x7e:'PUSH31',0x7f:'PUSH32',
    0x80:'DUP1',0x81:'DUP2',0x82:'DUP3',0x83:'DUP4',0x84:'DUP5',0x85:'DUP6',0x86:'DUP7',0x87:'DUP8',0x88:'DUP9',0x89:'DUP10',0x8a:'DUP11',0x8b:'DUP12',0x8c:'DUP13',0x8d:'DUP14',0x8e:'DUP15',0x8f:'DUP16',
    0x90:'SWAP1',0x91:'SWAP2',0x92:'SWAP3',0x93:'SWAP4',0x94:'SWAP5',0x95:'SWAP6',0x96:'SWAP7',0x97:'SWAP8',0x98:'SWAP9',0x99:'SWAP10',0x9a:'SWAP11',0x9b:'SWAP12',0x9c:'SWAP13',0x9d:'SWAP14',0x9e:'SWAP15',0x9f:'SWAP16',
    0xa0:'LOG0',0xa1:'LOG1',0xa2:'LOG2',0xa3:'LOG3',0xa4:'LOG4',
    0xf0:'CREATE',0xf1:'CALL',0xf2:'CALLCODE',0xf3:'RETURN',0xf4:'DELEGATECALL',0xf5:'CREATE2',0xfa:'STATICCALL',0xfd:'REVERT',0xfe:'INVALID',0xff:'SELFDESTRUCT'
}

# disassemble full with pc map
instrs=[]
pc=0
while pc<len(bytecode):
    op=bytecode[pc]
    name=opcodes.get(op, f'OP_{op:02x}')
    imm=None
    pc_next=pc+1
    if 0x60<=op<=0x7f:
        n=op-0x5f
        imm=bytecode[pc_next:pc_next+n]
        pc_next+=n
    instrs.append((pc,name,imm))
    pc=pc_next

# build dict pc->index
pc_index={pc:i for i,(pc,_,_) in enumerate(instrs)}

# helper to print range

def print_range(start,end):
    for pc,name,imm in instrs:
        if start<=pc<=end:
            if imm is None:
                print(f\"{pc:04x}: {name}\")
            else:
                print(f\"{pc:04x}: {name} 0x{imm.hex()}\")
    print('---')

# print ranges around function entry points
for start in [0x00fa,0x016a,0x01b4,0x01f8,0x02ca,0x02f3,0x0150]:
    print('range around',hex(start))
    print_range(start,start+0x80)

PY" in /tmp/codex-w0fmu5vv succeeded in 225ms:
range around 0xfa
00fa: JUMPDEST
00fb: PUSH2 0x0150
00fe: PUSH1 0x04
0100: DUP1
0101: CALLDATASIZE
0102: SUB
0103: PUSH1 0x60
0105: DUP2
0106: LT
0107: ISZERO
0108: PUSH2 0x0110
010b: JUMPI
010c: PUSH1 0x00
010e: DUP1
010f: REVERT
0110: JUMPDEST
0111: DUP2
0112: ADD
0113: SWAP1


thinking
**Analyzing selector-function mappings**

I clarified that selector 0x8f32d59b maps to an owner-check function returning boolean, while 0x8da5cb5b is the owner() getter, and 0x715018a6 triggers renounceOwnership logic emitting OwnershipTransferred events. This refines the contract's access control understanding.
thinking
**Identifying transferOwnership and key functions**

I confirmed selector 0xf2fde38b triggers transferOwnership with an address param forwarding to internal logic at 0x05fb, and 0xbab46259 returns an address from 0x05d5, likely a view function. Next, I plan to disassemble 0x034a–0x06ff to investigate the multi-param external call function.
exec
/bin/bash -lc "python - <<'PY'
import json
with open('BYTECODE_BUNDLE.json') as f:
    data=json.load(f)
code=data['artifact']['runtime_bytecode']['full'][2:]
bytecode=bytes.fromhex(code)

opcodes={
    0x00:'STOP',0x01:'ADD',0x02:'MUL',0x03:'SUB',0x04:'DIV',0x05:'SDIV',0x06:'MOD',0x07:'SMOD',0x08:'ADDMOD',0x09:'MULMOD',0x0a:'EXP',0x0b:'SIGNEXTEND',
    0x10:'LT',0x11:'GT',0x12:'SLT',0x13:'SGT',0x14:'EQ',0x15:'ISZERO',0x16:'AND',0x17:'OR',0x18:'XOR',0x19:'NOT',0x1a:'BYTE',0x1b:'SHL',0x1c:'SHR',0x1d:'SAR',
    0x20:'SHA3',
    0x30:'ADDRESS',0x31:'BALANCE',0x32:'ORIGIN',0x33:'CALLER',0x34:'CALLVALUE',0x35:'CALLDATALOAD',0x36:'CALLDATASIZE',0x37:'CALLDATACOPY',0x38:'CODESIZE',0x39:'CODECOPY',0x3a:'GASPRICE',0x3b:'EXTCODESIZE',0x3c:'EXTCODECOPY',0x3d:'RETURNDATASIZE',0x3e:'RETURNDATACOPY',0x3f:'EXTCODEHASH',
    0x40:'BLOCKHASH',0x41:'COINBASE',0x42:'TIMESTAMP',0x43:'NUMBER',0x44:'DIFFICULTY',0x45:'GASLIMIT',0x46:'CHAINID',0x47:'SELFBALANCE',0x48:'BASEFEE',
    0x50:'POP',0x51:'MLOAD',0x52:'MSTORE',0x53:'MSTORE8',0x54:'SLOAD',0x55:'SSTORE',0x56:'JUMP',0x57:'JUMPI',0x58:'PC',0x59:'MSIZE',0x5a:'GAS',0x5b:'JUMPDEST',
    0x60:'PUSH1',0x61:'PUSH2',0x62:'PUSH3',0x63:'PUSH4',0x64:'PUSH5',0x65:'PUSH6',0x66:'PUSH7',0x67:'PUSH8',0x68:'PUSH9',0x69:'PUSH10',0x6a:'PUSH11',0x6b:'PUSH12',0x6c:'PUSH13',0x6d:'PUSH14',0x6e:'PUSH15',0x6f:'PUSH16',
    0x70:'PUSH17',0x71:'PUSH18',0x72:'PUSH19',0x73:'PUSH20',0x74:'PUSH21',0x75:'PUSH22',0x76:'PUSH23',0x77:'PUSH24',0x78:'PUSH25',0x79:'PUSH26',0x7a:'PUSH27',0x7b:'PUSH28',0x7c:'PUSH29',0x7d:'PUSH30',0x7e:'PUSH31',0x7f:'PUSH32',
    0x80:'DUP1',0x81:'DUP2',0x82:'DUP3',0x83:'DUP4',0x84:'DUP5',0x85:'DUP6',0x86:'DUP7',0x87:'DUP8',0x88:'DUP9',0x89:'DUP10',0x8a:'DUP11',0x8b:'DUP12',0x8c:'DUP13',0x8d:'DUP14',0x8e:'DUP15',0x8f:'DUP16',
    0x90:'SWAP1',0x91:'SWAP2',0x92:'SWAP3',0x93:'SWAP4',0x94:'SWAP5',0x95:'SWAP6',0x96:'SWAP7',0x97:'SWAP8',0x98:'SWAP9',0x99:'SWAP10',0x9a:'SWAP11',0x9b:'SWAP12',0x9c:'SWAP13',0x9d:'SWAP14',0x9e:'SWAP15',0x9f:'SWAP16',
    0xa0:'LOG0',0xa1:'LOG1',0xa2:'LOG2',0xa3:'LOG3',0xa4:'LOG4',
    0xf0:'CREATE',0xf1:'CALL',0xf2:'CALLCODE',0xf3:'RETURN',0xf4:'DELEGATECALL',0xf5:'CREATE2',0xfa:'STATICCALL',0xfd:'REVERT',0xfe:'INVALID',0xff:'SELFDESTRUCT'
}

# disassemble and print from 0x034a to 0x0600
pc=0
instrs=[]
while pc<len(bytecode):
    op=bytecode[pc]
    name=opcodes.get(op, f'OP_{op:02x}')
    imm=None
    pc_next=pc+1
    if 0x60<=op<=0x7f:
        n=op-0x5f
        imm=bytecode[pc_next:pc_next+n]
        pc_next+=n
    instrs.append((pc,name,imm))
    pc=pc_next

for pc,name,imm in instrs:
    if 0x034a <= pc <= 0x0600:
        if imm is None:
            print(f\"{pc:04x}: {name}\")
        else:
            print(f\"{pc:04x}: {name} 0x{imm.hex()}\")
PY" in /tmp/codex-w0fmu5vv succeeded in 30ms:
034a: JUMPDEST
034b: PUSH1 0x00
034d: PUSH2 0x0354
0350: PUSH2 0x02f3
0353: JUMP
0354: JUMPDEST
0355: ISZERO
0356: ISZERO
0357: PUSH2 0x035f
035a: JUMPI
035b: PUSH1 0x00
035d: DUP1
035e: REVERT
035f: JUMPDEST
0360: PUSH1 0x00
0362: PUSH2 0x047b
0365: DUP4
0366: PUSH2 0x046d
0369: DUP7
036a: PUSH1 0x01


thinking
**Clarifying ERC20 call usage**

The call uses selectors for balanceOf and transfer, likely interacting with an ERC20 token contract; the code checks ownership and then prepares a staticcall to balanceOf on an address stored in slot 0, which may hold the token address rather than the owner.
thinking
**Mapping ERC20 balance check and branching**

The code prepares a call to balanceOf on the token contract (passing address(this)) and processes its 32-byte return to branch between two code paths, likely handling success or failure after checking the contract’s token balance; next steps include inspecting the jump targets for more context.
exec
/bin/bash -lc "python - <<'PY'
import json
with open('BYTECODE_BUNDLE.json') as f:
    data=json.load(f)
code=bytes.fromhex(data['artifact']['runtime_bytecode']['full'][2:])
# disassemble around 0x061a and 0x0658
opcodes={
    0x00:'STOP',0x01:'ADD',0x02:'MUL',0x03:'SUB',0x04:'DIV',0x05:'SDIV',0x06:'MOD',0x07:'SMOD',0x08:'ADDMOD',0x09:'MULMOD',0x0a:'EXP',0x0b:'SIGNEXTEND',
    0x10:'LT',0x11:'GT',0x12:'SLT',0x13:'SGT',0x14:'EQ',0x15:'ISZERO',0x16:'AND',0x17:'OR',0x18:'XOR',0x19:'NOT',0x1a:'BYTE',0x1b:'SHL',0x1c:'SHR',0x1d:'SAR',
    0x20:'SHA3',
    0x30:'ADDRESS',0x31:'BALANCE',0x32:'ORIGIN',0x33:'CALLER',0x34:'CALLVALUE',0x35:'CALLDATALOAD',0x36:'CALLDATASIZE',0x37:'CALLDATACOPY',0x38:'CODESIZE',0x39:'CODECOPY',0x3a:'GASPRICE',0x3b:'EXTCODESIZE',0x3c:'EXTCODECOPY',0x3d:'RETURNDATASIZE',0x3e:'RETURNDATACOPY',0x3f:'EXTCODEHASH',
    0x40:'BLOCKHASH',0x41:'COINBASE',0x42:'TIMESTAMP',0x43:'NUMBER',0x44:'DIFFICULTY',0x45:'GASLIMIT',0x46:'CHAINID',0x47:'SELFBALANCE',0x48:'BASEFEE',
    0x50:'POP',0x51:'MLOAD',0x52:'MSTORE',0x53:'MSTORE8',0x54:'SLOAD',0x55:'SSTORE',0x56:'JUMP',0x57:'JUMPI',0x58:'PC',0x59:'MSIZE',0x5a:'GAS',0x5b:'JUMPDEST',
    0x60:'PUSH1',0x61:'PUSH2',0x62:'PUSH3',0x63:'PUSH4',0x64:'PUSH5',0x65:'PUSH6',0x66:'PUSH7',0x67:'PUSH8',0x68:'PUSH9',0x69:'PUSH10',0x6a:'PUSH11',0x6b:'PUSH12',0x6c:'PUSH13',0x6d:'PUSH14',0x6e:'PUSH15',0x6f:'PUSH16',
    0x70:'PUSH17',0x71:'PUSH18',0x72:'PUSH19',0x73:'PUSH20',0x74:'PUSH21',0x75:'PUSH22',0x76:'PUSH23',0x77:'PUSH24',0x78:'PUSH25',0x79:'PUSH26',0x7a:'PUSH27',0x7b:'PUSH28',0x7c:'PUSH29',0x7d:'PUSH30',0x7e:'PUSH31',0x7f:'PUSH32',
    0x80:'DUP1',0x81:'DUP2',0x82:'DUP3',0x83:'DUP4',0x84:'DUP5',0x85:'DUP6',0x86:'DUP7',0x87:'DUP8',0x88:'DUP9',0x89:'DUP10',0x8a:'DUP11',0x8b:'DUP12',0x8c:'DUP13',0x8d:'DUP14',0x8e:'DUP15',0x8f:'DUP16',
    0x90:'SWAP1',0x91:'SWAP2',0x92:'SWAP3',0x93:'SWAP4',0x94:'SWAP5',0x95:'SWAP6',0x96:'SWAP7',0x97:'SWAP8',0x98:'SWAP9',0x99:'SWAP10',0x9a:'SWAP11',0x9b:'SWAP12',0x9c:'SWAP13',0x9d:'SWAP14',0x9e:'SWAP15',0x9f:'SWAP16',
    0xa0:'LOG0',0xa1:'LOG1',0xa2:'LOG2',0xa3:'LOG3',0xa4:'LOG4',
    0xf0:'CREATE',0xf1:'CALL',0xf2:'CALLCODE',0xf3:'RETURN',0xf4:'DELEGATECALL',0xf5:'CREATE2',0xfa:'STATICCALL',0xfd:'REVERT',0xfe:'INVALID',0xff:'SELFDESTRUCT'
}

# disassemble
pc=0
instrs=[]
while pc<len(code):
    op=code[pc]
    name=opcodes.get(op,f'OP_{op:02x}')
    imm=None
    pc_next=pc+1
    if 0x60<=op<=0x7f:
        n=op-0x5f
        imm=code[pc_next:pc_next+n]
        pc_next+=n
    instrs.append((pc,name,imm))
    pc=pc_next

for pc,name,imm in instrs:
    if 0x0610 <= pc <= 0x0700:
        if imm is None:
            print(f\"{pc:04x}: {name}\")
        else:
            print(f\"{pc:04x}: {name} 0x{imm.hex()}\")
PY" in /tmp/codex-w0fmu5vv succeeded in 30ms:
0612: DUP2
0613: PUSH2 0x0682
0616: JUMP
0617: JUMPDEST
0618: POP
0619: JUMP
061a: JUMPDEST
061b: PUSH1 0x00
061d: DUP1
061e: DUP4
061f: EQ
0620: ISZERO
0621: PUSH2 0x062d
0624: JUMPI
0625: PUSH1 0x00
0627: SWAP1
0628: POP
0629: PUSH2 0x0652
062c: JUMP
062d: JUMPDEST
exec
/bin/bash -lc "python - <<'PY'
import json
with open('BYTECODE_BUNDLE.json') as f:
    data=json.load(f)
code=bytes.fromhex(data['artifact']['runtime_bytecode']['full'][2:])

opcodes={
    0x00:'STOP',0x01:'ADD',0x02:'MUL',0x03:'SUB',0x04:'DIV',0x05:'SDIV',0x06:'MOD',0x07:'SMOD',0x08:'ADDMOD',0x09:'MULMOD',0x0a:'EXP',0x0b:'SIGNEXTEND',
    0x10:'LT',0x11:'GT',0x12:'SLT',0x13:'SGT',0x14:'EQ',0x15:'ISZERO',0x16:'AND',0x17:'OR',0x18:'XOR',0x19:'NOT',0x1a:'BYTE',0x1b:'SHL',0x1c:'SHR',0x1d:'SAR',
    0x20:'SHA3',
    0x30:'ADDRESS',0x31:'BALANCE',0x32:'ORIGIN',0x33:'CALLER',0x34:'CALLVALUE',0x35:'CALLDATALOAD',0x36:'CALLDATASIZE',0x37:'CALLDATACOPY',0x38:'CODESIZE',0x39:'CODECOPY',0x3a:'GASPRICE',0x3b:'EXTCODESIZE',0x3c:'EXTCODECOPY',0x3d:'RETURNDATASIZE',0x3e:'RETURNDATACOPY',0x3f:'EXTCODEHASH',
    0x40:'BLOCKHASH',0x41:'COINBASE',0x42:'TIMESTAMP',0x43:'NUMBER',0x44:'DIFFICULTY',0x45:'GASLIMIT',0x46:'CHAINID',0x47:'SELFBALANCE',0x48:'BASEFEE',
    0x50:'POP',0x51:'MLOAD',0x52:'MSTORE',0x53:'MSTORE8',0x54:'SLOAD',0x55:'SSTORE',0x56:'JUMP',0x57:'JUMPI',0x58:'PC',0x59:'MSIZE',0x5a:'GAS',0x5b:'JUMPDEST',
    0x60:'PUSH1',0x61:'PUSH2',0x62:'PUSH3',0x63:'PUSH4',0x64:'PUSH5',0x65:'PUSH6',0x66:'PUSH7',0x67:'PUSH8',0x68:'PUSH9',0x69:'PUSH10',0x6a:'PUSH11',0x6b:'PUSH12',0x6c:'PUSH13',0x6d:'PUSH14',0x6e:'PUSH15',0x6f:'PUSH16',
    0x70:'PUSH17',0x71:'PUSH18',0x72:'PUSH19',0x73:'PUSH20',0x74:'PUSH21',0x75:'PUSH22',0x76:'PUSH23',0x77:'PUSH24',0x78:'PUSH25',0x79:'PUSH26',0x7a:'PUSH27',0x7b:'PUSH28',0x7c:'PUSH29',0x7d:'PUSH30',0x7e:'PUSH31',0x7f:'PUSH32',
    0x80:'DUP1',0x81:'DUP2',0x82:'DUP3',0x83:'DUP4',0x84:'DUP5',0x85:'DUP6',0x86:'DUP7',0x87:'DUP8',0x88:'DUP9',0x89:'DUP10',0x8a:'DUP11',0x8b:'DUP12',0x8c:'DUP13',0x8d:'DUP14',0x8e:'DUP15',0x8f:'DUP16',
    0x90:'SWAP1',0x91:'SWAP2',0x92:'SWAP3',0x93:'SWAP4',0x94:'SWAP5',0x95:'SWAP6',0x96:'SWAP7',0x97:'SWAP8',0x98:'SWAP9',0x99:'SWAP10',0x9a:'SWAP11',0x9b:'SWAP12',0x9c:'SWAP13',0x9d:'SWAP14',0x9e:'SWAP15',0x9f:'SWAP16',
    0xa0:'LOG0',0xa1:'LOG1',0xa2:'LOG2',0xa3:'LOG3',0xa4:'LOG4',
    0xf0:'CREATE',0xf1:'CALL',0xf2:'CALLCODE',0xf3:'RETURN',0xf4:'DELEGATECALL',0xf5:'CREATE2',0xfa:'STATICCALL',0xfd:'REVERT',0xfe:'INVALID',0xff:'SELFDESTRUCT'
}

pc=0
instrs=[]
while pc<len(code):
    op=code[pc]
    name=opcodes.get(op,f'OP_{op:02x}')
    imm=None
    pc_next=pc+1
    if 0x60<=op<=0x7f:
        n=op-0x5f
        imm=code[pc_next:pc_next+n]
        pc_next+=n
    instrs.append((pc,name,imm))
    pc=pc_next

for pc,name,imm in instrs:
    if 0x06f0 <= pc <= 0x0800:
        if imm is None:
            print(f\"{pc:04x}: {name}\")
        else:
            print(f\"{pc:04x}: {name} 0x{imm.hex()}\")
PY" in /tmp/codex-w0fmu5vv succeeded in 62ms:
06f7: AND
06f8: PUSH20 0xffffffffffffffffffffffffffffffffffffffff
070d: AND
070e: PUSH32 0x8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e0
072f: PUSH1 0x40
0731: MLOAD
0732: PUSH1 0x40
0734: MLOAD
0735: DUP1
0736: SWAP2
0737: SUB
0738: SWAP1
0739: LOG3
073a: DUP1
073b: PUSH1 0x00
073d: DUP1
073e: PUSH2 0x0100
0741: EXP
0742: DUP2
0743: SLOAD


thinking
**Mapping ownership and token transfer logic**

I'm confirming the code segment checks for zero address before updating ownership and emitting events, matching transferOwnership logic. The function with selector 0xb5c5f672 likely handles token withdrawal by calling ERC20 transfer after verifying ownership via onlyOwner checks and querying token balance with balanceOf (via staticcall).
thinking
**Confirming token sweep logic with partial return value check**

I determined the function likely implements a sweep of ERC20 tokens by verifying ownership, fetching the contract’s token balance via staticcall, and conditionally setting transfer amount. The external call transfers tokens with zero ETH value but doesn’t validate the ERC20 transfer’s returned boolean, accepting tokens that return false as success, which poses a potential reliability issue.
exec
/bin/bash -lc "python - <<'PY'
from eth_utils import keccak

def ev(sig):
    return keccak(text=sig).hex()

candidates=[
    'Withdraw(address,address,uint256)',
    'Withdraw(address,uint256)',
    'Withdrawal(address,address,uint256)',
    'Transfer(address,address,uint256)',
    'Deposit(address,address,uint256)',
    'Sweep(address,address,uint256)',
    'Sweep(address,address,uint256,uint256)',
    'Withdraw(address,address,uint256,uint256)',
    'Withdrawn(address,address,uint256)',
    'TokensWithdrawn(address,address,uint256)',
    'Recovered(address,address,uint256)',
    'Recovered(address,uint256)',
    'TokenRecovered(address,address,uint256)',
    'ERC20Recovered(address,address,uint256)',
]
for sig in candidates:
    h=ev(sig)
    if h.startswith('7fcf532c15f0a6db0bd6d0e038bea71d30d808c7d98cb3bf7268a95bf5081b65'):
        print('match??',sig)
    # print short prefix
    print(sig,h[:10])

PY" in /tmp/codex-w0fmu5vv succeeded in 288ms:
Withdraw(address,address,uint256) 9b1bfa7fa9
Withdraw(address,uint256) 884edad9ce
Withdrawal(address,address,uint256) 2717ead6b9
Transfer(address,address,uint256) ddf252ad1b
Deposit(address,address,uint256) 5548c837ab
Sweep(address,address,uint256) ed679328ae
Sweep(address,address,uint256,uint256) 83a064c587
Withdraw(address,address,uint256,uint256) f341246ada
Withdrawn(address,address,uint256) d1c19fbcd4
TokensWithdrawn(address,address,uint256) 6337ed398c
Recovered(address,address,uint256) fff3b38442
Recovered(address,uint256) 8c1256b889
TokenRecovered(address,address,uint256) 879f92dded
ERC20Recovered(address,address,uint256) aca8fb252c


thinking
**Assessing security-related function behavior**

Analyzing token transfer logic shows onlyOwner restriction with safe math and balance checks, no evident reentrancy or upgradeability issues; owner control over arbitrary token transfers is expected and not problematic here.
thinking
**Identifying unchecked ERC20 call and preparing symbolic execution**

Found the function uses low-level ERC20 transfer call without checking its return value and relies on balanceOf-derived amounts without clear upper bound checks; to clarify exact operand roles and invariants, I'm starting a symbolic stack simulation of the function’s core logic to reveal potential vulnerabilities.
exec
/bin/bash -lc "python - <<'PY'
import json
from collections import defaultdict

with open('BYTECODE_BUNDLE.json') as f:
    data=json.load(f)
code=bytes.fromhex(data['artifact']['runtime_bytecode']['full'][2:])

opcodes={
    0x00:'STOP',0x01:'ADD',0x02:'MUL',0x03:'SUB',0x04:'DIV',0x05:'SDIV',0x06:'MOD',0x07:'SMOD',0x08:'ADDMOD',0x09:'MULMOD',0x0a:'EXP',0x0b:'SIGNEXTEND',
    0x10:'LT',0x11:'GT',0x12:'SLT',0x13:'SGT',0x14:'EQ',0x15:'ISZERO',0x16:'AND',0x17:'OR',0x18:'XOR',0x19:'NOT',0x1a:'BYTE',0x1b:'SHL',0x1c:'SHR',0x1d:'SAR',
    0x20:'SHA3',
    0x30:'ADDRESS',0x31:'BALANCE',0x32:'ORIGIN',0x33:'CALLER',0x34:'CALLVALUE',0x35:'CALLDATALOAD',0x36:'CALLDATASIZE',0x37:'CALLDATACOPY',0x38:'CODESIZE',0x39:'CODECOPY',0x3a:'GASPRICE',0x3b:'EXTCODESIZE',0x3c:'EXTCODECOPY',0x3d:'RETURNDATASIZE',0x3e:'RETURNDATACOPY',0x3f:'EXTCODEHASH',
    0x40:'BLOCKHASH',0x41:'COINBASE',0x42:'TIMESTAMP',0x43:'NUMBER',0x44:'DIFFICULTY',0x45:'GASLIMIT',0x46:'CHAINID',0x47:'SELFBALANCE',0x48:'BASEFEE',
    0x50:'POP',0x51:'MLOAD',0x52:'MSTORE',0x53:'MSTORE8',0x54:'SLOAD',0x55:'SSTORE',0x56:'JUMP',0x57:'JUMPI',0x58:'PC',0x59:'MSIZE',0x5a:'GAS',0x5b:'JUMPDEST',
    0x60:'PUSH1',0x61:'PUSH2',0x62:'PUSH3',0x63:'PUSH4',0x64:'PUSH5',0x65:'PUSH6',0x66:'PUSH7',0x67:'PUSH8',0x68:'PUSH9',0x69:'PUSH10',0x6a:'PUSH11',0x6b:'PUSH12',0x6c:'PUSH13',0x6d:'PUSH14',0x6e:'PUSH15',0x6f:'PUSH16',
    0x70:'PUSH17',0x71:'PUSH18',0x72:'PUSH19',0x73:'PUSH20',0x74:'PUSH21',0x75:'PUSH22',0x76:'PUSH23',0x77:'PUSH24',0x78:'PUSH25',0x79:'PUSH26',0x7a:'PUSH27',0x7b:'PUSH28',0x7c:'PUSH29',0x7d:'PUSH30',0x7e:'PUSH31',0x7f:'PUSH32',
    0x80:'DUP1',0x81:'DUP2',0x82:'DUP3',0x83:'DUP4',0x84:'DUP5',0x85:'DUP6',0x86:'DUP7',0x87:'DUP8',0x88:'DUP9',0x89:'DUP10',0x8a:'DUP11',0x8b:'DUP12',0x8c:'DUP13',0x8d:'DUP14',0x8e:'DUP15',0x8f:'DUP16',
    0x90:'SWAP1',0x91:'SWAP2',0x92:'SWAP3',0x93:'SWAP4',0x94:'SWAP5',0x95:'SWAP6',0x96:'SWAP7',0x97:'SWAP8',0x98:'SWAP9',0x99:'SWAP10',0x9a:'SWAP11',0x9b:'SWAP12',0x9c:'SWAP13',0x9d:'SWAP14',0x9e:'SWAP15',0x9f:'SWAP16',
    0xa0:'LOG0',0xa1:'LOG1',0xa2:'LOG2',0xa3:'LOG3',0xa4:'LOG4',
    0xf0:'CREATE',0xf1:'CALL',0xf2:'CALLCODE',0xf3:'RETURN',0xf4:'DELEGATECALL',0xf5:'CREATE2',0xfa:'STATICCALL',0xfd:'REVERT',0xfe:'INVALID',0xff:'SELFDESTRUCT'
}

# disassemble to map pc->(op,imm)
instrs={}
pc=0
while pc<len(code):
    op=code[pc]
    name=opcodes.get(op,f'OP_{op:02x}')
    imm=None
    pc_next=pc+1
    if 0x60<=op<=0x7f:
        n=op-0x5f
        imm=code[pc_next:pc_next+n]
        pc_next+=n
    instrs[pc]=(name,imm,pc_next)
    pc=pc_next

# simple symbolic execution from 0x034a until CALL at 0x0593
# start stack with three args in order as produced by decoder.
# We need to compute order. We'll attempt to reconstruct by simulating decoder at 0x00fa.

# Let's simulate decoder quickly to get stack at 0x034a.

def simulate(start_pc, end_pc, init_stack):
    stack=init_stack[:]
    pc=start_pc
    steps=0
    while pc"'!=end_pc and steps<1000:
        steps+=1
        name,imm,next_pc=instrs[pc]
        # handle PUSH
        if name.startswith('"'PUSH'):
            stack.append(('imm',imm.hex()))
        elif name.startswith('DUP'):
            n=int(name[3:])
            stack.append(stack[-n])
        elif name.startswith('SWAP'):
            n=int(name[4:])
            stack[-1], stack[-1-n] = stack[-1-n], stack[-1]
        elif name=='POP':
            stack.pop()
        elif name in ('CALLDATALOAD','CALLDATASIZE','CALLVALUE','ADDRESS','CALLER','SLOAD','MLOAD','RETURNDATASIZE','EXTCODESIZE'):
            # push symbolic
            stack.append((name,))
        elif name in ('ADD','SUB','MUL','DIV','AND','OR','EQ','GT','LT','ISZERO','EXP'):
            # pop 2 (or 1) push result
            if name=='ISZERO':
                a=stack.pop()
                stack.append((name,a))
            else:
                b=stack.pop(); a=stack.pop()
                stack.append((name,a,b))
        elif name in ('JUMP','JUMPI'):
            # stop at jumps for now
            pass
        # ignore others
        pc=next_pc
    return stack

# simulate decoder from 0x00fa to 0x014c (just before jump)
stack = simulate(0x00fa, 0x014c, [])
print('stack size',len(stack))
print(stack[-6:])

PY" in /tmp/codex-w0fmu5vv succeeded in 29ms:
stack size 11
[('ADD', ('imm', '00'), ('imm', '00')), ('AND', ('CALLDATALOAD',), ('imm', 'ffffffffffffffffffffffffffffffffffffffff')), ('imm', '00'), ('CALLDATALOAD',), ('imm', '00'), ('CALLDATALOAD',)]


thinking
**Identifying stack simulation inaccuracies**

The current simulation missed popping stack values for certain opcodes like CALLDATALOAD, resulting in a stack mismatch before the JUMP instruction at 0x014c. I'll implement correct stack semantics for these opcodes and simulate sequentially up to the JUMP, which will mark the stopping point.
thinking
**Planning symbolic execution from function entry**

I'm setting up a symbolic executor starting at 0x00fa with an empty stack, modeling stack operations symbolically and handling JUMPI by taking the success branch. I'll simulate through jumps up to 0x034a while tracking the stack carefully but will skip memory modeling for now.
exec
/bin/bash -lc "python - <<'PY'
import json

with open('BYTECODE_BUNDLE.json') as f:
    data=json.load(f)
code=bytes.fromhex(data['artifact']['runtime_bytecode']['full'][2:])

opcodes={
    0x00:'STOP',0x01:'ADD',0x02:'MUL',0x03:'SUB',0x04:'DIV',0x05:'SDIV',0x06:'MOD',0x07:'SMOD',0x08:'ADDMOD',0x09:'MULMOD',0x0a:'EXP',0x0b:'SIGNEXTEND',
    0x10:'LT',0x11:'GT',0x12:'SLT',0x13:'SGT',0x14:'EQ',0x15:'ISZERO',0x16:'AND',0x17:'OR',0x18:'XOR',0x19:'NOT',0x1a:'BYTE',0x1b:'SHL',0x1c:'SHR',0x1d:'SAR',
    0x20:'SHA3',
    0x30:'ADDRESS',0x31:'BALANCE',0x32:'ORIGIN',0x33:'CALLER',0x34:'CALLVALUE',0x35:'CALLDATALOAD',0x36:'CALLDATASIZE',0x37:'CALLDATACOPY',0x38:'CODESIZE',0x39:'CODECOPY',0x3a:'GASPRICE',0x3b:'EXTCODESIZE',0x3c:'EXTCODECOPY',0x3d:'RETURNDATASIZE',0x3e:'RETURNDATACOPY',0x3f:'EXTCODEHASH',
    0x40:'BLOCKHASH',0x41:'COINBASE',0x42:'TIMESTAMP',0x43:'NUMBER',0x44:'DIFFICULTY',0x45:'GASLIMIT',0x46:'CHAINID',0x47:'SELFBALANCE',0x48:'BASEFEE',
    0x50:'POP',0x51:'MLOAD',0x52:'MSTORE',0x53:'MSTORE8',0x54:'SLOAD',0x55:'SSTORE',0x56:'JUMP',0x57:'JUMPI',0x58:'PC',0x59:'MSIZE',0x5a:'GAS',0x5b:'JUMPDEST',
    0x60:'PUSH1',0x61:'PUSH2',0x62:'PUSH3',0x63:'PUSH4',0x64:'PUSH5',0x65:'PUSH6',0x66:'PUSH7',0x67:'PUSH8',0x68:'PUSH9',0x69:'PUSH10',0x6a:'PUSH11',0x6b:'PUSH12',0x6c:'PUSH13',0x6d:'PUSH14',0x6e:'PUSH15',0x6f:'PUSH16',
    0x70:'PUSH17',0x71:'PUSH18',0x72:'PUSH19',0x73:'PUSH20',0x74:'PUSH21',0x75:'PUSH22',0x76:'PUSH23',0x77:'PUSH24',0x78:'PUSH25',0x79:'PUSH26',0x7a:'PUSH27',0x7b:'PUSH28',0x7c:'PUSH29',0x7d:'PUSH30',0x7e:'PUSH31',0x7f:'PUSH32',
    0x80:'DUP1',0x81:'DUP2',0x82:'DUP3',0x83:'DUP4',0x84:'DUP5',0x85:'DUP6',0x86:'DUP7',0x87:'DUP8',0x88:'DUP9',0x89:'DUP10',0x8a:'DUP11',0x8b:'DUP12',0x8c:'DUP13',0x8d:'DUP14',0x8e:'DUP15',0x8f:'DUP16',
    0x90:'SWAP1',0x91:'SWAP2',0x92:'SWAP3',0x93:'SWAP4',0x94:'SWAP5',0x95:'SWAP6',0x96:'SWAP7',0x97:'SWAP8',0x98:'SWAP9',0x99:'SWAP10',0x9a:'SWAP11',0x9b:'SWAP12',0x9c:'SWAP13',0x9d:'SWAP14',0x9e:'SWAP15',0x9f:'SWAP16',
    0xa0:'LOG0',0xa1:'LOG1',0xa2:'LOG2',0xa3:'LOG3',0xa4:'LOG4',
    0xf0:'CREATE',0xf1:'CALL',0xf2:'CALLCODE',0xf3:'RETURN',0xf4:'DELEGATECALL',0xf5:'CREATE2',0xfa:'STATICCALL',0xfd:'REVERT',0xfe:'INVALID',0xff:'SELFDESTRUCT'
}

# disassemble to map pc->(op,imm,next_pc)
instrs={}
pc=0
while pc<len(code):
    op=code[pc]
    name=opcodes.get(op,f'OP_{op:02x}')
    imm=None
    pc_next=pc+1
    if 0x60<=op<=0x7f:
        n=op-0x5f
        imm=code[pc_next:pc_next+n]
        pc_next+=n
    instrs[pc]=(name,imm,pc_next)
    pc=pc_next

# symbolic stack item
counter=0

def sym(label):
    global counter
    counter+=1
    return f\"{label}{counter}\"

# simulator
stack=[]
mem={}
pc=0x00fa
visited=set()
steps=0

# We'll simulate until we reach pc 0x034a (function body) and then stop.
while steps<1000:
    steps+=1
    name,imm,next_pc=instrs[pc]
    # print some debug
    # print(hex(pc), name, imm.hex() if imm else '')
    if name.startswith('PUSH'):
        stack.append(int.from_bytes(imm,'big'))
    elif name.startswith('DUP'):
        n=int(name[3:])
        stack.append(stack[-n])
    elif name.startswith('SWAP'):
        n=int(name[4:])
        stack[-1], stack[-1-n] = stack[-1-n], stack[-1]
    elif name=='POP':
        stack.pop()
    elif name=='CALLDATALOAD':
        offset=stack.pop()
        stack.append(sym('calldata'))
    elif name=='CALLDATASIZE':
        stack.append(sym('calldatasize'))
    elif name=='CALLVALUE':
        stack.append(sym('callvalue'))
    elif name in ('SLOAD','MLOAD','EXTCODESIZE','RETURNDATASIZE','ADDRESS','CALLER'):
        if name in ('SLOAD','MLOAD','EXTCODESIZE'):
            if stack: stack.pop()
        stack.append(sym(name.lower()))
    elif name in ('ADD','SUB','MUL','DIV','AND','OR','EQ','GT','LT','EXP'):
        b=stack.pop(); a=stack.pop()
        stack.append(sym(name.lower()))
    elif name=='ISZERO':
        a=stack.pop()
        stack.append(sym('iszero'))
    elif name=='JUMPI':
        dest=stack.pop(); cond=stack.pop()
        # follow the non-revert path by jumping to dest
        # dest might be int
        if isinstance(dest,int):
            pc=dest
            continue
        else:
            # unknown, just continue to next
            pass
    elif name=='JUMP':
        dest=stack.pop()
        if isinstance(dest,int):
            pc=dest
            if pc==0x034a:
                print('Reached 0x034a with stack:',stack)
                break
            continue
    # advance
    pc=next_pc

print('final pc',hex(pc))
print('stack at 0x034a start:')
print(stack)
PY" in /tmp/codex-w0fmu5vv succeeded in 75ms:
Reached 0x034a with stack: [336, 'and7', 'calldata9', 'calldata11']
final pc 0x34a
stack at 0x034a start:
[336, 'and7', 'calldata9', 'calldata11']


thinking
**Mapping stack arguments before call**

The stack at 0x034a holds return address and three symbolic arguments likely corresponding to an address and two uints. I'm planning symbolic execution from 0x034a to the CALL at 0x0593, tracking argument usage and stack state, following jumps along the main path.
thinking
**Choosing success path in jump simulation**

I'm deciding to always follow JUMPI to the success destination by assuming conditions are true, avoiding revert paths. This approach lets me simulate the main execution flow accurately and track stack state at each CALL for argument identification.
exec
/bin/bash -lc "python - <<'PY'
import json

with open('BYTECODE_BUNDLE.json') as f:
    data=json.load(f)
code=bytes.fromhex(data['artifact']['runtime_bytecode']['full'][2:])

opcodes={
    0x00:'STOP',0x01:'ADD',0x02:'MUL',0x03:'SUB',0x04:'DIV',0x05:'SDIV',0x06:'MOD',0x07:'SMOD',0x08:'ADDMOD',0x09:'MULMOD',0x0a:'EXP',0x0b:'SIGNEXTEND',
    0x10:'LT',0x11:'GT',0x12:'SLT',0x13:'SGT',0x14:'EQ',0x15:'ISZERO',0x16:'AND',0x17:'OR',0x18:'XOR',0x19:'NOT',0x1a:'BYTE',0x1b:'SHL',0x1c:'SHR',0x1d:'SAR',
    0x20:'SHA3',
    0x30:'ADDRESS',0x31:'BALANCE',0x32:'ORIGIN',0x33:'CALLER',0x34:'CALLVALUE',0x35:'CALLDATALOAD',0x36:'CALLDATASIZE',0x37:'CALLDATACOPY',0x38:'CODESIZE',0x39:'CODECOPY',0x3a:'GASPRICE',0x3b:'EXTCODESIZE',0x3c:'EXTCODECOPY',0x3d:'RETURNDATASIZE',0x3e:'RETURNDATACOPY',0x3f:'EXTCODEHASH',
    0x40:'BLOCKHASH',0x41:'COINBASE',0x42:'TIMESTAMP',0x43:'NUMBER',0x44:'DIFFICULTY',0x45:'GASLIMIT',0x46:'CHAINID',0x47:'SELFBALANCE',0x48:'BASEFEE',
    0x50:'POP',0x51:'MLOAD',0x52:'MSTORE',0x53:'MSTORE8',0x54:'SLOAD',0x55:'SSTORE',0x56:'JUMP',0x57:'JUMPI',0x58:'PC',0x59:'MSIZE',0x5a:'GAS',0x5b:'JUMPDEST',
    0x60:'PUSH1',0x61:'PUSH2',0x62:'PUSH3',0x63:'PUSH4',0x64:'PUSH5',0x65:'PUSH6',0x66:'PUSH7',0x67:'PUSH8',0x68:'PUSH9',0x69:'PUSH10',0x6a:'PUSH11',0x6b:'PUSH12',0x6c:'PUSH13',0x6d:'PUSH14',0x6e:'PUSH15',0x6f:'PUSH16',
    0x70:'PUSH17',0x71:'PUSH18',0x72:'PUSH19',0x73:'PUSH20',0x74:'PUSH21',0x75:'PUSH22',0x76:'PUSH23',0x77:'PUSH24',0x78:'PUSH25',0x79:'PUSH26',0x7a:'PUSH27',0x7b:'PUSH28',0x7c:'PUSH29',0x7d:'PUSH30',0x7e:'PUSH31',0x7f:'PUSH32',
    0x80:'DUP1',0x81:'DUP2',0x82:'DUP3',0x83:'DUP4',0x84:'DUP5',0x85:'DUP6',0x86:'DUP7',0x87:'DUP8',0x88:'DUP9',0x89:'DUP10',0x8a:'DUP11',0x8b:'DUP12',0x8c:'DUP13',0x8d:'DUP14',0x8e:'DUP15',0x8f:'DUP16',
    0x90:'SWAP1',0x91:'SWAP2',0x92:'SWAP3',0x93:'SWAP4',0x94:'SWAP5',0x95:'SWAP6',0x96:'SWAP7',0x97:'SWAP8',0x98:'SWAP9',0x99:'SWAP10',0x9a:'SWAP11',0x9b:'SWAP12',0x9c:'SWAP13',0x9d:'SWAP14',0x9e:'SWAP15',0x9f:'SWAP16',
    0xa0:'LOG0',0xa1:'LOG1',0xa2:'LOG2',0xa3:'LOG3',0xa4:'LOG4',
    0xf0:'CREATE',0xf1:'CALL',0xf2:'CALLCODE',0xf3:'RETURN',0xf4:'DELEGATECALL',0xf5:'CREATE2',0xfa:'STATICCALL',0xfd:'REVERT',0xfe:'INVALID',0xff:'SELFDESTRUCT'
}

# disassemble to map pc->(op,imm,next_pc)
instrs={}
pc=0
while pc<len(code):
    op=code[pc]
    name=opcodes.get(op,f'OP_{op:02x}')
    imm=None
    pc_next=pc+1
    if 0x60<=op<=0x7f:
        n=op-0x5f
        imm=code[pc_next:pc_next+n]
        pc_next+=n
    instrs[pc]=(name,imm,pc_next)
    pc=pc_next

counter=0

def sym(label):
    global counter
    counter+=1
    return f\"{label}{counter}\"

# start stack at 0x034a from previous simulation
stack=[0x0150,'arg0','arg1','arg2']  # bottom -> top
pc=0x034a
steps=0

while steps<2000:
    steps+=1
    name,imm,next_pc=instrs[pc]
    # print(f\"{pc:04x} {name}\")
    if name.startswith('PUSH'):
        stack.append(int.from_bytes(imm,'big'))
    elif name.startswith('DUP'):
        n=int(name[3:])
        stack.append(stack[-n])
    elif name.startswith('SWAP'):
        n=int(name[4:])
        stack[-1], stack[-1-n] = stack[-1-n], stack[-1]
    elif name=='POP':
        stack.pop()
    elif name=='CALLDATALOAD':
        stack.pop(); stack.append(sym('calldata'))
    elif name=='CALLDATASIZE':
        stack.append(sym('calldatasize'))
    elif name=='CALLVALUE':
        stack.append(sym('callvalue'))
    elif name in ('SLOAD','MLOAD','EXTCODESIZE','RETURNDATASIZE','ADDRESS','CALLER'):
        if name in ('SLOAD','MLOAD','EXTCODESIZE'):
            if stack: stack.pop()
        stack.append(sym(name.lower()))
    elif name in ('ADD','SUB','MUL','DIV','AND','OR','EQ','GT','LT','EXP'):
        b=stack.pop(); a=stack.pop(); stack.append(sym(name.lower()))
    elif name=='ISZERO':
        a=stack.pop(); stack.append(sym('iszero'))
    elif name=='JUMPI':
        dest=stack.pop(); cond=stack.pop()
        if isinstance(dest,int):
            pc=dest
            continue
    elif name=='JUMP':
        dest=stack.pop()
        if isinstance(dest,int):
            pc=dest
            # stop if jump back to return address? but continue
            continue
    elif name in ('STATICCALL','CALL'):
        # For CALL/STATICCALL, print stack snapshot
        print('At',hex(pc),name,'stack (bottom->top):',stack)
        # emulate pop for CALL: gas,to,value,in_offset,in_size,out_offset,out_size (7)
        if name=='STATICCALL':
            # gas,to,in_offset,in_size,out_offset,out_size
            for _ in range(6):
                if stack: stack.pop()
            stack.append(sym('staticcall_ret'))
        else:
            for _ in range(7):
                if stack: stack.pop()
            stack.append(sym('call_ret'))
    # advance
    pc=next_pc
    if pc==0x0150:
        break

print('final pc',hex(pc))
print('final stack top',stack[-6:])
PY" in /tmp/codex-w0fmu5vv exited 1 in 45ms:
At 0x427 STATICCALL stack (bottom->top): [336, 'arg0', 'arg1', 'arg2', 0, 0, 1147, 'arg2', 1133, 'arg1', 'and15', 1889567281, 'address16', 'mload17', 'mul19', 'add20', 'add23', 32, 'mload24', 'sub25', 'mload24', 'mul19']
At 0x593 CALL stack (bottom->top): [336, 'arg0', 'arg1', 'arg2', 0, 0, 1147, 'arg2', 1133, 'arg1', 'and15', 1889567281, 'mload37', 'and41', 57810043145978950376228313794938171962422655018555593468903716172405399886693, 'mload37', 'mload42', 'sub45', 'mload44', 'and50', 2835717307, 57810043145978950376228313794938171962422655018555593468903716172405399886693, 'mload44', 'mload51', 'mul53', 'add54', 'add54', 'add58', 32, 'mload59', 'sub60', 'mload59', 0, 'add54']
Traceback (most recent call last):
  File "<stdin>", line 51, in <module>
KeyError: 1966


thinking
**Analyzing stack top for CALL arguments**

I identified that the CALL opcode uses the top 7 stack items as arguments in the order: gas, to, value, in_offset, in_size, out_offset, out_size (with the top of stack last). I'm extracting these last 7 items to correctly map CALL inputs from the stack snapshot.
thinking
**Confirming argument order at CALL**

I verified the CALL opcode pops its 7 arguments from the stack with out_size on top, confirming that the last stack item corresponds to out_size and the preceding six match the expected order. I'll rerun the simulation to capture and print these last 7 stack items programmatically for accuracy.
exec
/bin/bash -lc "python - <<'PY'
import json

with open('BYTECODE_BUNDLE.json') as f:
    data=json.load(f)
code=bytes.fromhex(data['artifact']['runtime_bytecode']['full'][2:])

# opcode map omitted for brevity; same as before
opcodes={
    0x00:'STOP',0x01:'ADD',0x02:'MUL',0x03:'SUB',0x04:'DIV',0x05:'SDIV',0x06:'MOD',0x07:'SMOD',0x08:'ADDMOD',0x09:'MULMOD',0x0a:'EXP',0x0b:'SIGNEXTEND',
    0x10:'LT',0x11:'GT',0x12:'SLT',0x13:'SGT',0x14:'EQ',0x15:'ISZERO',0x16:'AND',0x17:'OR',0x18:'XOR',0x19:'NOT',0x1a:'BYTE',0x1b:'SHL',0x1c:'SHR',0x1d:'SAR',
    0x20:'SHA3',
    0x30:'ADDRESS',0x31:'BALANCE',0x32:'ORIGIN',0x33:'CALLER',0x34:'CALLVALUE',0x35:'CALLDATALOAD',0x36:'CALLDATASIZE',0x37:'CALLDATACOPY',0x38:'CODESIZE',0x39:'CODECOPY',0x3a:'GASPRICE',0x3b:'EXTCODESIZE',0x3c:'EXTCODECOPY',0x3d:'RETURNDATASIZE',0x3e:'RETURNDATACOPY',0x3f:'EXTCODEHASH',
    0x40:'BLOCKHASH',0x41:'COINBASE',0x42:'TIMESTAMP',0x43:'NUMBER',0x44:'DIFFICULTY',0x45:'GASLIMIT',0x46:'CHAINID',0x47:'SELFBALANCE',0x48:'BASEFEE',
    0x50:'POP',0x51:'MLOAD',0x52:'MSTORE',0x53:'MSTORE8',0x54:'SLOAD',0x55:'SSTORE',0x56:'JUMP',0x57:'JUMPI',0x58:'PC',0x59:'MSIZE',0x5a:'GAS',0x5b:'JUMPDEST',
    0x60:'PUSH1',0x61:'PUSH2',0x62:'PUSH3',0x63:'PUSH4',0x64:'PUSH5',0x65:'PUSH6',0x66:'PUSH7',0x67:'PUSH8',0x68:'PUSH9',0x69:'PUSH10',0x6a:'PUSH11',0x6b:'PUSH12',0x6c:'PUSH13',0x6d:'PUSH14',0x6e:'PUSH15',0x6f:'PUSH16',
    0x70:'PUSH17',0x71:'PUSH18',0x72:'PUSH19',0x73:'PUSH20',0x74:'PUSH21',0x75:'PUSH22',0x76:'PUSH23',0x77:'PUSH24',0x78:'PUSH25',0x79:'PUSH26',0x7a:'PUSH27',0x7b:'PUSH28',0x7c:'PUSH29',0x7d:'PUSH30',0x7e:'PUSH31',0x7f:'PUSH32',
    0x80:'DUP1',0x81:'DUP2',0x82:'DUP3',0x83:'DUP4',0x84:'DUP5',0x85:'DUP6',0x86:'DUP7',0x87:'DUP8',0x88:'DUP9',0x89:'DUP10',0x8a:'DUP11',0x8b:'DUP12',0x8c:'DUP13',0x8d:'DUP14',0x8e:'DUP15',0x8f:'DUP16',
    0x90:'SWAP1',0x91:'SWAP2',0x92:'SWAP3',0x93:'SWAP4',0x94:'SWAP5',0x95:'SWAP6',0x96:'SWAP7',0x97:'SWAP8',0x98:'SWAP9',0x99:'SWAP10',0x9a:'SWAP11',0x9b:'SWAP12',0x9c:'SWAP13',0x9d:'SWAP14',0x9e:'SWAP15',0x9f:'SWAP16',
    0xa0:'LOG0',0xa1:'LOG1',0xa2:'LOG2',0xa3:'LOG3',0xa4:'LOG4',
    0xf0:'CREATE',0xf1:'CALL',0xf2:'CALLCODE',0xf3:'RETURN',0xf4:'DELEGATECALL',0xf5:'CREATE2',0xfa:'STATICCALL',0xfd:'REVERT',0xfe:'INVALID',0xff:'SELFDESTRUCT'
}

instrs={}
pc=0
while pc<len(code):
    op=code[pc]
    name=opcodes.get(op,f'OP_{op:02x}')
    imm=None
    pc_next=pc+1
    if 0x60<=op<=0x7f:
        n=op-0x5f
        imm=code[pc_next:pc_next+n]
        pc_next+=n
    instrs[pc]=(name,imm,pc_next)
    pc=pc_next

counter=0

def sym(label):
    global counter
    counter+=1
    return f\"{label}{counter}\"

stack=[0x0150,'arg0','arg1','arg2']
pc=0x034a
steps=0

while steps<2000:
    steps+=1
    name,imm,next_pc=instrs[pc]
    if name.startswith('PUSH'):
        stack.append(int.from_bytes(imm,'big'))
    elif name.startswith('DUP'):
        n=int(name[3:])
        stack.append(stack[-n])
    elif name.startswith('SWAP'):
        n=int(name[4:])
        stack[-1], stack[-1-n] = stack[-1-n], stack[-1]
    elif name=='POP':
        stack.pop()
    elif name=='CALLDATALOAD':
        stack.pop(); stack.append(sym('calldata'))
    elif name=='CALLDATASIZE':
        stack.append(sym('calldatasize'))
    elif name=='CALLVALUE':
        stack.append(sym('callvalue'))
    elif name in ('SLOAD','MLOAD','EXTCODESIZE','RETURNDATASIZE','ADDRESS','CALLER'):
        if name in ('SLOAD','MLOAD','EXTCODESIZE'):
            if stack: stack.pop()
        stack.append(sym(name.lower()))
    elif name in ('ADD','SUB','MUL','DIV','AND','OR','EQ','GT','LT','EXP'):
        b=stack.pop(); a=stack.pop(); stack.append(sym(name.lower()))
    elif name=='ISZERO':
        a=stack.pop(); stack.append(sym('iszero'))
    elif name=='JUMPI':
        dest=stack.pop(); cond=stack.pop()
        if isinstance(dest,int):
            pc=dest
            continue
    elif name=='JUMP':
        dest=stack.pop()
        if isinstance(dest,int):
            pc=dest
            continue
    elif name in ('STATICCALL','CALL'):
        if name=='CALL':
            last7=stack[-7:]
            print('CALL args (gas,to,value,in_off,in_size,out_off,out_size):',last7)
        else:
            last6=stack[-6:]
            print('STATICCALL args (gas,to,in_off,in_size,out_off,out_size):',last6)
        # pop and push result
        if name=='STATICCALL':
            for _ in range(6): stack.pop()
            stack.append(sym('staticcall_ret'))
        else:
            for _ in range(7): stack.pop()
            stack.append(sym('call_ret'))
    pc=next_pc
    if pc==0x0150:
        break

PY" in /tmp/codex-w0fmu5vv exited 1 in 33ms:
STATICCALL args (gas,to,in_off,in_size,out_off,out_size): ['add23', 32, 'mload24', 'sub25', 'mload24', 'mul19']
CALL args (gas,to,value,in_off,in_size,out_off,out_size): ['add58', 32, 'mload59', 'sub60', 'mload59', 0, 'add54']
Traceback (most recent call last):
  File "<stdin>", line 50, in <module>
KeyError: 1966


thinking
**Identifying stack tracking issues due to missing pops**

The simulation’s stack is inaccurate because memory operations like MSTORE aren’t popping their expected arguments, causing wrong CALL parameters like to=32; updating the simulation to pop properly on MSTORE, MSTORE8, CALLDATACOPY, and similar will restore correct stack state.
thinking
**Updating simulation to fix call arguments**
exec
/bin/bash -lc "python - <<'PY'
import json

with open('BYTECODE_BUNDLE.json') as f:
    data=json.load(f)
code=bytes.fromhex(data['artifact']['runtime_bytecode']['full'][2:])

# opcode map
opcodes={
    0x00:'STOP',0x01:'ADD',0x02:'MUL',0x03:'SUB',0x04:'DIV',0x05:'SDIV',0x06:'MOD',0x07:'SMOD',0x08:'ADDMOD',0x09:'MULMOD',0x0a:'EXP',0x0b:'SIGNEXTEND',
    0x10:'LT',0x11:'GT',0x12:'SLT',0x13:'SGT',0x14:'EQ',0x15:'ISZERO',0x16:'AND',0x17:'OR',0x18:'XOR',0x19:'NOT',0x1a:'BYTE',0x1b:'SHL',0x1c:'SHR',0x1d:'SAR',
    0x20:'SHA3',
    0x30:'ADDRESS',0x31:'BALANCE',0x32:'ORIGIN',0x33:'CALLER',0x34:'CALLVALUE',0x35:'CALLDATALOAD',0x36:'CALLDATASIZE',0x37:'CALLDATACOPY',0x38:'CODESIZE',0x39:'CODECOPY',0x3a:'GASPRICE',0x3b:'EXTCODESIZE',0x3c:'EXTCODECOPY',0x3d:'RETURNDATASIZE',0x3e:'RETURNDATACOPY',0x3f:'EXTCODEHASH',
    0x40:'BLOCKHASH',0x41:'COINBASE',0x42:'TIMESTAMP',0x43:'NUMBER',0x44:'DIFFICULTY',0x45:'GASLIMIT',0x46:'CHAINID',0x47:'SELFBALANCE',0x48:'BASEFEE',
    0x50:'POP',0x51:'MLOAD',0x52:'MSTORE',0x53:'MSTORE8',0x54:'SLOAD',0x55:'SSTORE',0x56:'JUMP',0x57:'JUMPI',0x58:'PC',0x59:'MSIZE',0x5a:'GAS',0x5b:'JUMPDEST',
    0x60:'PUSH1',0x61:'PUSH2',0x62:'PUSH3',0x63:'PUSH4',0x64:'PUSH5',0x65:'PUSH6',0x66:'PUSH7',0x67:'PUSH8',0x68:'PUSH9',0x69:'PUSH10',0x6a:'PUSH11',0x6b:'PUSH12',0x6c:'PUSH13',0x6d:'PUSH14',0x6e:'PUSH15',0x6f:'PUSH16',
    0x70:'PUSH17',0x71:'PUSH18',0x72:'PUSH19',0x73:'PUSH20',0x74:'PUSH21',0x75:'PUSH22',0x76:'PUSH23',0x77:'PUSH24',0x78:'PUSH25',0x79:'PUSH26',0x7a:'PUSH27',0x7b:'PUSH28',0x7c:'PUSH29',0x7d:'PUSH30',0x7e:'PUSH31',0x7f:'PUSH32',
    0x80:'DUP1',0x81:'DUP2',0x82:'DUP3',0x83:'DUP4',0x84:'DUP5',0x85:'DUP6',0x86:'DUP7',0x87:'DUP8',0x88:'DUP9',0x89:'DUP10',0x8a:'DUP11',0x8b:'DUP12',0x8c:'DUP13',0x8d:'DUP14',0x8e:'DUP15',0x8f:'DUP16',
    0x90:'SWAP1',0x91:'SWAP2',0x92:'SWAP3',0x93:'SWAP4',0x94:'SWAP5',0x95:'SWAP6',0x96:'SWAP7',0x97:'SWAP8',0x98:'SWAP9',0x99:'SWAP10',0x9a:'SWAP11',0x9b:'SWAP12',0x9c:'SWAP13',0x9d:'SWAP14',0x9e:'SWAP15',0x9f:'SWAP16',
    0xa0:'LOG0',0xa1:'LOG1',0xa2:'LOG2',0xa3:'LOG3',0xa4:'LOG4',
    0xf0:'CREATE',0xf1:'CALL',0xf2:'CALLCODE',0xf3:'RETURN',0xf4:'DELEGATECALL',0xf5:'CREATE2',0xfa:'STATICCALL',0xfd:'REVERT',0xfe:'INVALID',0xff:'SELFDESTRUCT'
}

instrs={}
pc=0
while pc<len(code):
    op=code[pc]
    name=opcodes.get(op,f'OP_{op:02x}')
    imm=None
    pc_next=pc+1
    if 0x60<=op<=0x7f:
        n=op-0x5f
        imm=code[pc_next:pc_next+n]
        pc_next+=n
    instrs[pc]=(name,imm,pc_next)
    pc=pc_next

counter=0

def sym(label):
    global counter
    counter+=1
    return f\"{label}{counter}\"

stack=[0x0150,'arg0','arg1','arg2']
pc=0x034a
steps=0

while steps<5000:
    steps+=1
    name,imm,next_pc=instrs[pc]
    if name.startswith('PUSH'):
        stack.append(int.from_bytes(imm,'big'))
    elif name.startswith('DUP'):
        n=int(name[3:])
        stack.append(stack[-n])
    elif name.startswith('SWAP'):
        n=int(name[4:])
        stack[-1], stack[-1-n] = stack[-1-n], stack[-1]
    elif name=='POP':
        stack.pop()
    elif name=='CALLDATALOAD':
        stack.pop(); stack.append(sym('calldata'))
    elif name=='CALLDATASIZE':
        stack.append(sym('calldatasize'))
    elif name=='CALLVALUE':
        stack.append(sym('callvalue'))
    elif name in ('SLOAD','MLOAD','EXTCODESIZE','RETURNDATASIZE','ADDRESS','CALLER','MSIZE'):
        if name in ('SLOAD','MLOAD','EXTCODESIZE','MSIZE'):
            if stack: stack.pop()
        stack.append(sym(name.lower()))
    elif name in ('MSTORE','MSTORE8'):
        # pop offset and value
        if stack: stack.pop();
        if stack: stack.pop();
    elif name in ('CALLDATACOPY','CODECOPY','RETURNDATACOPY'):
        # pop destOffset, offset, size
        for _ in range(3):
            if stack: stack.pop()
    elif name in ('ADD','SUB','MUL','DIV','AND','OR','EQ','GT','LT','EXP'):
        b=stack.pop(); a=stack.pop(); stack.append(sym(name.lower()))
    elif name=='ISZERO':
        a=stack.pop(); stack.append(sym('iszero'))
    elif name=='JUMPI':
        dest=stack.pop(); cond=stack.pop()
        if isinstance(dest,int):
            pc=dest
            continue
    elif name=='JUMP':
        dest=stack.pop()
        if isinstance(dest,int):
            pc=dest
            continue
    elif name in ('STATICCALL','CALL'):
        if name=='CALL':
            last7=stack[-7:]
            print('CALL args (gas,to,value,in_off,in_size,out_off,out_size):',last7)
        else:
            last6=stack[-6:]
            print('STATICCALL args (gas,to,in_off,in_size,out_off,out_size):',last6)
        # pop and push result
        if name=='STATICCALL':
            for _ in range(6):
                if stack: stack.pop()
            stack.append(sym('staticcall_ret'))
        else:
            for _ in range(7):
                if stack: stack.pop()
            stack.append(sym('call_ret'))
    pc=next_pc
    if pc==0x0150:
        break

PY" in /tmp/codex-w0fmu5vv exited 1 in 36ms:
STATICCALL args (gas,to,in_off,in_size,out_off,out_size): ['add23', 32, 'mload24', 'sub25', 'mload24', 'and15']
CALL args (gas,to,value,in_off,in_size,out_off,out_size): ['add58', 32, 'mload59', 'sub60', 'mload59', 0, 'and50']
CALL args (gas,to,value,in_off,in_size,out_off,out_size): ['add91', 32, 'mload92', 'sub93', 'mload92', 0, 'and83']
Traceback (most recent call last):
  File "<stdin>", line 50, in <module>
KeyError: 1966



thinking
**Analyzing call argument modeling issues**

The call argument simulation is too simplified, leading to incorrect stack state and lingering values like to=32; actual disassembly shows a PUSH1 0x00 before DUP8, confirming value=0 (no ETH transfer). This highlights missing return value checks and the detector falsely flagging possible ETH transfer, plus issues with strict return data size requirements for ERC20 calls that may cause reverts on non-standard tokens.
thinking
**Identifying low-severity ERC20 return value check issue**

The owner-only token transfer function calls ERC20 `transfer` with the token address from calldata and checks call success but does not validate the returned bool, potentially allowing silent failures; it also requires return data size ≥32, causing reverts on tokens returning no data, which is a compatibility risk. This highlights a low-severity finding due to untrusted external calls without strict return validation despite onlyOwner protection.
thinking
```json
{
  "no_findings": false,
  "summary": "One low-severity issue: ERC20 transfer return value not enforced in owner-only token transfer path (based on bytecode; selector inference). No proxy or delegatecall detected.",
  "findings": [
    {
      "severity": "low",
      "category": "other",
      "title": "ERC20 transfer return value not enforced in owner-only token transfer",
      "exploit_scenario": "An owner (or authorized caller) invokes the token-transfer function (selector 0xb5c5f672) against a token that returns false instead of reverting. The low-level CALL succeeds and the transaction completes without reverting; the function does not require the returned bool to be true, so off-chain systems or callers that ignore the return value may assume the transfer succeeded while tokens remain in the contract. Bytecode-only inference; behavior depends on caller checking the returned bool.",
      "recommendation": "After the CALL, require that return data is either empty or decodes to true (SafeERC20-style), reverting otherwise. Alternatively, explicitly document that callers must check the returned bool.",
      "evidence": "Runtime bytecode builds calldata with selector 0xa9059cbb and executes CALL at pc:0x0593 (1427). After success check, it only verifies returndatasize >= 32 and loads the word; there is no EQ/ISZERO check against the loaded value before jumping to the return routine. Selector 0xb5c5f672 inferred from dispatcher; assumed token-transfer function; bytecode-only analysis may have uncertainty.",
      "locations": ["pc:0x0593", "selector:0xb5c5f672"]
    }
  ]
}
```
codex
{"no_findings":false,"summary":"One low-severity issue found from runtime bytecode (selector inference best-effort): the owner-only external token transfer path does not enforce the ERC20 boolean return value. No proxy/delegatecall behavior detected in the artifact.","findings":[{"severity":"low","category":"other","title":"ERC20 transfer return value not enforced in owner-only token transfer","exploit_scenario":"A privileged caller invokes the function at selector 0xb5c5f672 against a token that returns false instead of reverting. The low-level CALL succeeds and the transaction does not revert, but the transfer may not happen; if the caller or off-chain systems ignore the returned bool, they may assume funds moved when they did not. This is inferred from bytecode only; exact behavior depends on how the caller handles the return value.","recommendation":"After the CALL, require that return data is either empty or decodes to true (SafeERC20-style), reverting otherwise. If the intent is to allow false returns, explicitly document that callers must check the return value.","evidence":"Dispatcher selects 0xb5c5f672; the body builds calldata for selector 0xa9059cbb and executes CALL at pc:0x0593. Post-call logic checks success and returndatasize >= 32, loads the word, then jumps without comparing it to true (no EQ/ISZERO check).","locations":["pc:0x0593","selector:0xb5c5f672"]}]}
tokens used
143,521

{
    "codex": {
        "ran_at": "2026-01-22T06:00:52.265211+00:00",
        "returncode": 0
    },
    "project": {
        "mode": "bytecode",
        "bytecode_length": 3922,
        "bytecode_truncated": false,
        "capability_graph_present": true,
        "analysis_artifact_present": true
    },
    "summary": "One low-severity issue found from runtime bytecode (selector inference best-effort): the owner-only external token transfer path does not enforce the ERC20 boolean return value. No proxy/delegatecall behavior detected in the artifact.",
    "raw_final": {
        "summary": "One low-severity issue found from runtime bytecode (selector inference best-effort): the owner-only external token transfer path does not enforce the ERC20 boolean return value. No proxy/delegatecall behavior detected in the artifact.",
        "findings": [
            {
                "title": "ERC20 transfer return value not enforced in owner-only token transfer",
                "category": "other",
                "evidence": "Dispatcher selects 0xb5c5f672; the body builds calldata for selector 0xa9059cbb and executes CALL at pc:0x0593. Post-call logic checks success and returndatasize >= 32, loads the word, then jumps without comparing it to true (no EQ/ISZERO check).",
                "severity": "low",
                "locations": [
                    "pc:0x0593",
                    "selector:0xb5c5f672"
                ],
                "recommendation": "After the CALL, require that return data is either empty or decodes to true (SafeERC20-style), reverting otherwise. If the intent is to allow false returns, explicitly document that callers must check the return value.",
                "exploit_scenario": "A privileged caller invokes the function at selector 0xb5c5f672 against a token that returns false instead of reverting. The low-level CALL succeeds and the transaction does not revert, but the transfer may not happen; if the caller or off-chain systems ignore the returned bool, they may assume funds moved when they did not. This is inferred from bytecode only; exact behavior depends on how the caller handles the return value."
            }
        ],
        "no_findings": false
    },
    "no_findings": false,
    "schema_version": 1
}

00000000: PUSH1 0x80
00000002: PUSH1 0x40
00000004: MSTORE
00000005: CALLVALUE
00000006: DUP1
00000007: ISZERO
00000008: PUSH2 0x0010
0000000b: JUMPI
0000000c: PUSH1 0x00
0000000e: DUP1
0000000f: REVERT
00000010: JUMPDEST
00000011: POP
00000012: PUSH1 0x04
00000014: CALLDATASIZE
00000015: LT
00000016: PUSH2 0x007f
00000019: JUMPI
0000001a: PUSH1 0x00
0000001c: CALLDATALOAD
0000001d: PUSH29 0x0100000000000000000000000000000000000000000000000000000000
0000003b: SWAP1
0000003c: DIV
0000003d: DUP1
0000003e: PUSH4 0x715018a6
00000043: EQ
00000044: PUSH2 0x0084
00000047: JUMPI
00000048: DUP1
00000049: PUSH4 0x8da5cb5b
0000004e: EQ
0000004f: PUSH2 0x008e
00000052: JUMPI
00000053: DUP1
00000054: PUSH4 0x8f32d59b
00000059: EQ
0000005a: PUSH2 0x00d8
0000005d: JUMPI
0000005e: DUP1
0000005f: PUSH4 0xb5c5f672
00000064: EQ
00000065: PUSH2 0x00fa
00000068: JUMPI
00000069: DUP1
0000006a: PUSH4 0xbab46259
0000006f: EQ
00000070: PUSH2 0x016a
00000073: JUMPI
00000074: DUP1
00000075: PUSH4 0xf2fde38b
0000007a: EQ
0000007b: PUSH2 0x01b4
0000007e: JUMPI
0000007f: JUMPDEST
00000080: PUSH1 0x00
00000082: DUP1
00000083: REVERT
00000084: JUMPDEST
00000085: PUSH2 0x008c
00000088: PUSH2 0x01f8
0000008b: JUMP
0000008c: JUMPDEST
0000008d: STOP
0000008e: JUMPDEST
0000008f: PUSH2 0x0096
00000092: PUSH2 0x02ca
00000095: JUMP
00000096: JUMPDEST
00000097: PUSH1 0x40
00000099: MLOAD
0000009a: DUP1
0000009b: DUP3
0000009c: PUSH20 0xffffffffffffffffffffffffffffffffffffffff
000000b1: AND
000000b2: PUSH20 0xffffffffffffffffffffffffffffffffffffffff
000000c7: AND
000000c8: DUP2
000000c9: MSTORE
000000ca: PUSH1 0x20
000000cc: ADD
000000cd: SWAP2
000000ce: POP
000000cf: POP
000000d0: PUSH1 0x40
000000d2: MLOAD
000000d3: DUP1
000000d4: SWAP2
000000d5: SUB
000000d6: SWAP1
000000d7: RETURN
000000d8: JUMPDEST
000000d9: PUSH2 0x00e0
000000dc: PUSH2 0x02f3
000000df: JUMP
000000e0: JUMPDEST
000000e1: PUSH1 0x40
000000e3: MLOAD
000000e4: DUP1
000000e5: DUP3
000000e6: ISZERO
000000e7: ISZERO
000000e8: ISZERO
000000e9: ISZERO
000000ea: DUP2
000000eb: MSTORE
000000ec: PUSH1 0x20
000000ee: ADD
000000ef: SWAP2
000000f0: POP
000000f1: POP
000000f2: PUSH1 0x40
000000f4: MLOAD
000000f5: DUP1
000000f6: SWAP2
000000f7: SUB
000000f8: SWAP1
000000f9: RETURN
000000fa: JUMPDEST
000000fb: PUSH2 0x0150
000000fe: PUSH1 0x04
00000100: DUP1
00000101: CALLDATASIZE
00000102: SUB
00000103: PUSH1 0x60
00000105: DUP2
00000106: LT
00000107: ISZERO
00000108: PUSH2 0x0110
0000010b: JUMPI
0000010c: PUSH1 0x00
0000010e: DUP1
0000010f: REVERT
00000110: JUMPDEST
00000111: DUP2
00000112: ADD
00000113: SWAP1
00000114: DUP1
00000115: DUP1
00000116: CALLDATALOAD
00000117: PUSH20 0xffffffffffffffffffffffffffffffffffffffff
0000012c: AND
0000012d: SWAP1
0000012e: PUSH1 0x20
00000130: ADD
00000131: SWAP1
00000132: SWAP3
00000133: SWAP2
00000134: SWAP1
00000135: DUP1
00000136: CALLDATALOAD
00000137: SWAP1
00000138: PUSH1 0x20
0000013a: ADD
0000013b: SWAP1
0000013c: SWAP3
0000013d: SWAP2
0000013e: SWAP1
0000013f: DUP1
00000140: CALLDATALOAD
00000141: SWAP1
00000142: PUSH1 0x20
00000144: ADD
00000145: SWAP1
00000146: SWAP3
00000147: SWAP2
00000148: SWAP1
00000149: POP
0000014a: POP
0000014b: POP
0000014c: PUSH2 0x034a
0000014f: JUMP
00000150: JUMPDEST
00000151: PUSH1 0x40
00000153: MLOAD
00000154: DUP1
00000155: DUP3
00000156: ISZERO
00000157: ISZERO
00000158: ISZERO
00000159: ISZERO
0000015a: DUP2
0000015b: MSTORE
0000015c: PUSH1 0x20
0000015e: ADD
0000015f: SWAP2
00000160: POP
00000161: POP
00000162: PUSH1 0x40
00000164: MLOAD
00000165: DUP1
00000166: SWAP2
00000167: SUB
00000168: SWAP1
00000169: RETURN
0000016a: JUMPDEST
0000016b: PUSH2 0x0172
0000016e: PUSH2 0x05d5
00000171: JUMP
00000172: JUMPDEST
00000173: PUSH1 0x40
00000175: MLOAD
00000176: DUP1
00000177: DUP3
00000178: PUSH20 0xffffffffffffffffffffffffffffffffffffffff
0000018d: AND
0000018e: PUSH20 0xffffffffffffffffffffffffffffffffffffffff
000001a3: AND
000001a4: DUP2
000001a5: MSTORE
000001a6: PUSH1 0x20
000001a8: ADD
000001a9: SWAP2
000001aa: POP
000001ab: POP
000001ac: PUSH1 0x40
000001ae: MLOAD
000001af: DUP1
000001b0: SWAP2
000001b1: SUB
000001b2: SWAP1
000001b3: RETURN
000001b4: JUMPDEST
000001b5: PUSH2 0x01f6
000001b8: PUSH1 0x04
000001ba: DUP1
000001bb: CALLDATASIZE
000001bc: SUB
000001bd: PUSH1 0x20
000001bf: DUP2
000001c0: LT
000001c1: ISZERO
000001c2: PUSH2 0x01ca
000001c5: JUMPI
000001c6: PUSH1 0x00
000001c8: DUP1
000001c9: REVERT
000001ca: JUMPDEST
000001cb: DUP2
000001cc: ADD
000001cd: SWAP1
000001ce: DUP1
000001cf: DUP1
000001d0: CALLDATALOAD
000001d1: PUSH20 0xffffffffffffffffffffffffffffffffffffffff
000001e6: AND
000001e7: SWAP1
000001e8: PUSH1 0x20
000001ea: ADD
000001eb: SWAP1
000001ec: SWAP3
000001ed: SWAP2
000001ee: SWAP1
000001ef: POP
000001f0: POP
000001f1: POP
000001f2: PUSH2 0x05fb
000001f5: JUMP
000001f6: JUMPDEST
000001f7: STOP
000001f8: JUMPDEST
000001f9: PUSH2 0x0200
000001fc: PUSH2 0x02f3
000001ff: JUMP
00000200: JUMPDEST
00000201: ISZERO
00000202: ISZERO
00000203: PUSH2 0x020b
00000206: JUMPI
00000207: PUSH1 0x00
00000209: DUP1
0000020a: REVERT
0000020b: JUMPDEST
0000020c: PUSH1 0x00
0000020e: PUSH20 0xffffffffffffffffffffffffffffffffffffffff
00000223: AND
00000224: PUSH1 0x00
00000226: DUP1
00000227: SWAP1
00000228: SLOAD
00000229: SWAP1
0000022a: PUSH2 0x0100
0000022d: EXP
0000022e: SWAP1
0000022f: DIV
00000230: PUSH20 0xffffffffffffffffffffffffffffffffffffffff
00000245: AND
00000246: PUSH20 0xffffffffffffffffffffffffffffffffffffffff
0000025b: AND
0000025c: PUSH32 0x8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e0
0000027d: PUSH1 0x40
0000027f: MLOAD
00000280: PUSH1 0x40
00000282: MLOAD
00000283: DUP1
00000284: SWAP2
00000285: SUB
00000286: SWAP1
00000287: LOG3
00000288: PUSH1 0x00
0000028a: DUP1
0000028b: PUSH1 0x00
0000028d: PUSH2 0x0100
00000290: EXP
00000291: DUP2
00000292: SLOAD
00000293: DUP2
00000294: PUSH20 0xffffffffffffffffffffffffffffffffffffffff
000002a9: MUL
000002aa: NOT
000002ab: AND
000002ac: SWAP1
000002ad: DUP4
000002ae: PUSH20 0xffffffffffffffffffffffffffffffffffffffff
000002c3: AND
000002c4: MUL
000002c5: OR
000002c6: SWAP1
000002c7: SSTORE
000002c8: POP
000002c9: JUMP
000002ca: JUMPDEST
000002cb: PUSH1 0x00
000002cd: DUP1
000002ce: PUSH1 0x00
000002d0: SWAP1
000002d1: SLOAD
000002d2: SWAP1
000002d3: PUSH2 0x0100
000002d6: EXP
000002d7: SWAP1
000002d8: DIV
000002d9: PUSH20 0xffffffffffffffffffffffffffffffffffffffff
000002ee: AND
000002ef: SWAP1
000002f0: POP
000002f1: SWAP1
000002f2: JUMP
000002f3: JUMPDEST
000002f4: PUSH1 0x00
000002f6: DUP1
000002f7: PUSH1 0x00
000002f9: SWAP1
000002fa: SLOAD
000002fb: SWAP1
000002fc: PUSH2 0x0100
000002ff: EXP
00000300: SWAP1
00000301: DIV
00000302: PUSH20 0xffffffffffffffffffffffffffffffffffffffff
00000317: AND
00000318: PUSH20 0xffffffffffffffffffffffffffffffffffffffff
0000032d: AND
0000032e: CALLER
0000032f: PUSH20 0xffffffffffffffffffffffffffffffffffffffff
00000344: AND
00000345: EQ
00000346: SWAP1
00000347: POP
00000348: SWAP1
00000349: JUMP
0000034a: JUMPDEST
0000034b: PUSH1 0x00
0000034d: PUSH2 0x0354
00000350: PUSH2 0x02f3
00000353: JUMP
00000354: JUMPDEST
00000355: ISZERO
00000356: ISZERO
00000357: PUSH2 0x035f
0000035a: JUMPI
0000035b: PUSH1 0x00
0000035d: DUP1
0000035e: REVERT
0000035f: JUMPDEST
00000360: PUSH1 0x00
00000362: PUSH2 0x047b
00000365: DUP4
00000366: PUSH2 0x046d
00000369: DUP7
0000036a: PUSH1 0x01
0000036c: PUSH1 0x00
0000036e: SWAP1
0000036f: SLOAD
00000370: SWAP1
00000371: PUSH2 0x0100
00000374: EXP
00000375: SWAP1
00000376: DIV
00000377: PUSH20 0xffffffffffffffffffffffffffffffffffffffff
0000038c: AND
0000038d: PUSH20 0xffffffffffffffffffffffffffffffffffffffff
000003a2: AND
000003a3: PUSH4 0x70a08231
000003a8: ADDRESS
000003a9: PUSH1 0x40
000003ab: MLOAD
000003ac: DUP3
000003ad: PUSH4 0xffffffff
000003b2: AND
000003b3: PUSH29 0x0100000000000000000000000000000000000000000000000000000000
000003d1: MUL
000003d2: DUP2
000003d3: MSTORE
000003d4: PUSH1 0x04
000003d6: ADD
000003d7: DUP1
000003d8: DUP3
000003d9: PUSH20 0xffffffffffffffffffffffffffffffffffffffff
000003ee: AND
000003ef: PUSH20 0xffffffffffffffffffffffffffffffffffffffff
00000404: AND
00000405: DUP2
00000406: MSTORE
00000407: PUSH1 0x20
00000409: ADD
0000040a: SWAP2
0000040b: POP
0000040c: POP
0000040d: PUSH1 0x20
0000040f: PUSH1 0x40
00000411: MLOAD
00000412: DUP1
00000413: DUP4
00000414: SUB
00000415: DUP2
00000416: DUP7
00000417: DUP1
00000418: EXTCODESIZE
00000419: ISZERO
0000041a: DUP1
0000041b: ISZERO
0000041c: PUSH2 0x0424
0000041f: JUMPI
00000420: PUSH1 0x00
00000422: DUP1
00000423: REVERT
00000424: JUMPDEST
00000425: POP
00000426: GAS
00000427: STATICCALL
00000428: ISZERO
00000429: DUP1
0000042a: ISZERO
0000042b: PUSH2 0x0438
0000042e: JUMPI
0000042f: RETURNDATASIZE
00000430: PUSH1 0x00
00000432: DUP1
00000433: RETURNDATACOPY
00000434: RETURNDATASIZE
00000435: PUSH1 0x00
00000437: REVERT
00000438: JUMPDEST
00000439: POP
0000043a: POP
0000043b: POP
0000043c: POP
0000043d: PUSH1 0x40
0000043f: MLOAD
00000440: RETURNDATASIZE
00000441: PUSH1 0x20
00000443: DUP2
00000444: LT
00000445: ISZERO
00000446: PUSH2 0x044e
00000449: JUMPI
0000044a: PUSH1 0x00
0000044c: DUP1
0000044d: REVERT
0000044e: JUMPDEST
0000044f: DUP2
00000450: ADD
00000451: SWAP1
00000452: DUP1
00000453: DUP1
00000454: MLOAD
00000455: SWAP1
00000456: PUSH1 0x20
00000458: ADD
00000459: SWAP1
0000045a: SWAP3
0000045b: SWAP2
0000045c: SWAP1
0000045d: POP
0000045e: POP
0000045f: POP
00000460: PUSH2 0x061a
00000463: SWAP1
00000464: SWAP2
00000465: SWAP1
00000466: PUSH4 0xffffffff
0000046b: AND
0000046c: JUMP
0000046d: JUMPDEST
0000046e: PUSH2 0x0658
00000471: SWAP1
00000472: SWAP2
00000473: SWAP1
00000474: PUSH4 0xffffffff
00000479: AND
0000047a: JUMP
0000047b: JUMPDEST
0000047c: SWAP1
0000047d: POP
0000047e: DUP5
0000047f: PUSH20 0xffffffffffffffffffffffffffffffffffffffff
00000494: AND
00000495: PUSH32 0x7fcf532c15f0a6db0bd6d0e038bea71d30d808c7d98cb3bf7268a95bf5081b65
000004b6: DUP3
000004b7: PUSH1 0x40
000004b9: MLOAD
000004ba: DUP1
000004bb: DUP3
000004bc: DUP2
000004bd: MSTORE
000004be: PUSH1 0x20
000004c0: ADD
000004c1: SWAP2
000004c2: POP
000004c3: POP
000004c4: PUSH1 0x40
000004c6: MLOAD
000004c7: DUP1
000004c8: SWAP2
000004c9: SUB
000004ca: SWAP1
000004cb: LOG2
000004cc: PUSH1 0x01
000004ce: PUSH1 0x00
000004d0: SWAP1
000004d1: SLOAD
000004d2: SWAP1
000004d3: PUSH2 0x0100
000004d6: EXP
000004d7: SWAP1
000004d8: DIV
000004d9: PUSH20 0xffffffffffffffffffffffffffffffffffffffff
000004ee: AND
000004ef: PUSH20 0xffffffffffffffffffffffffffffffffffffffff
00000504: AND
00000505: PUSH4 0xa9059cbb
0000050a: DUP7
0000050b: DUP4
0000050c: PUSH1 0x40
0000050e: MLOAD
0000050f: DUP4
00000510: PUSH4 0xffffffff
00000515: AND
00000516: PUSH29 0x0100000000000000000000000000000000000000000000000000000000
00000534: MUL
00000535: DUP2
00000536: MSTORE
00000537: PUSH1 0x04
00000539: ADD
0000053a: DUP1
0000053b: DUP4
0000053c: PUSH20 0xffffffffffffffffffffffffffffffffffffffff
00000551: AND
00000552: PUSH20 0xffffffffffffffffffffffffffffffffffffffff
00000567: AND
00000568: DUP2
00000569: MSTORE
0000056a: PUSH1 0x20
0000056c: ADD
0000056d: DUP3
0000056e: DUP2
0000056f: MSTORE
00000570: PUSH1 0x20
00000572: ADD
00000573: SWAP3
00000574: POP
00000575: POP
00000576: POP
00000577: PUSH1 0x20
00000579: PUSH1 0x40
0000057b: MLOAD
0000057c: DUP1
0000057d: DUP4
0000057e: SUB
0000057f: DUP2
00000580: PUSH1 0x00
00000582: DUP8
00000583: DUP1
00000584: EXTCODESIZE
00000585: ISZERO
00000586: DUP1
00000587: ISZERO
00000588: PUSH2 0x0590
0000058b: JUMPI
0000058c: PUSH1 0x00
0000058e: DUP1
0000058f: REVERT
00000590: JUMPDEST
00000591: POP
00000592: GAS
00000593: CALL
00000594: ISZERO
00000595: DUP1
00000596: ISZERO
00000597: PUSH2 0x05a4
0000059a: JUMPI
0000059b: RETURNDATASIZE
0000059c: PUSH1 0x00
0000059e: DUP1
0000059f: RETURNDATACOPY
000005a0: RETURNDATASIZE
000005a1: PUSH1 0x00
000005a3: REVERT
000005a4: JUMPDEST
000005a5: POP
000005a6: POP
000005a7: POP
000005a8: POP
000005a9: PUSH1 0x40
000005ab: MLOAD
000005ac: RETURNDATASIZE
000005ad: PUSH1 0x20
000005af: DUP2
000005b0: LT
000005b1: ISZERO
000005b2: PUSH2 0x05ba
000005b5: JUMPI
000005b6: PUSH1 0x00
000005b8: DUP1
000005b9: REVERT
000005ba: JUMPDEST
000005bb: DUP2
000005bc: ADD
000005bd: SWAP1
000005be: DUP1
000005bf: DUP1
000005c0: MLOAD
000005c1: SWAP1
000005c2: PUSH1 0x20
000005c4: ADD
000005c5: SWAP1
000005c6: SWAP3
000005c7: SWAP2
000005c8: SWAP1
000005c9: POP
000005ca: POP
000005cb: POP
000005cc: SWAP2
000005cd: POP
000005ce: POP
000005cf: SWAP4
000005d0: SWAP3
000005d1: POP
000005d2: POP
000005d3: POP
000005d4: JUMP
000005d5: JUMPDEST
000005d6: PUSH1 0x01
000005d8: PUSH1 0x00
000005da: SWAP1
000005db: SLOAD
000005dc: SWAP1
000005dd: PUSH2 0x0100
000005e0: EXP
000005e1: SWAP1
000005e2: DIV
000005e3: PUSH20 0xffffffffffffffffffffffffffffffffffffffff
000005f8: AND
000005f9: DUP2
000005fa: JUMP
000005fb: JUMPDEST
000005fc: PUSH2 0x0603
000005ff: PUSH2 0x02f3
00000602: JUMP
00000603: JUMPDEST
00000604: ISZERO
00000605: ISZERO
00000606: PUSH2 0x060e
00000609: JUMPI
0000060a: PUSH1 0x00
0000060c: DUP1
0000060d: REVERT
0000060e: JUMPDEST
0000060f: PUSH2 0x0617
00000612: DUP2
00000613: PUSH2 0x0682
00000616: JUMP
00000617: JUMPDEST
00000618: POP
00000619: JUMP
0000061a: JUMPDEST
0000061b: PUSH1 0x00
0000061d: DUP1
0000061e: DUP4
0000061f: EQ
00000620: ISZERO
00000621: PUSH2 0x062d
00000624: JUMPI
00000625: PUSH1 0x00
00000627: SWAP1
00000628: POP
00000629: PUSH2 0x0652
0000062c: JUMP
0000062d: JUMPDEST
0000062e: PUSH1 0x00
00000630: DUP3
00000631: DUP5
00000632: MUL
00000633: SWAP1
00000634: POP
00000635: DUP3
00000636: DUP5
00000637: DUP3
00000638: DUP2
00000639: ISZERO
0000063a: ISZERO
0000063b: PUSH2 0x0640
0000063e: JUMPI
0000063f: INVALID
00000640: JUMPDEST
00000641: DIV
00000642: EQ
00000643: ISZERO
00000644: ISZERO
00000645: PUSH2 0x064d
00000648: JUMPI
00000649: PUSH1 0x00
0000064b: DUP1
0000064c: REVERT
0000064d: JUMPDEST
0000064e: DUP1
0000064f: SWAP2
00000650: POP
00000651: POP
00000652: JUMPDEST
00000653: SWAP3
00000654: SWAP2
00000655: POP
00000656: POP
00000657: JUMP
00000658: JUMPDEST
00000659: PUSH1 0x00
0000065b: DUP1
0000065c: DUP3
0000065d: GT
0000065e: ISZERO
0000065f: ISZERO
00000660: PUSH2 0x0668
00000663: JUMPI
00000664: PUSH1 0x00
00000666: DUP1
00000667: REVERT
00000668: JUMPDEST
00000669: PUSH1 0x00
0000066b: DUP3
0000066c: DUP5
0000066d: DUP2
0000066e: ISZERO
0000066f: ISZERO
00000670: PUSH2 0x0675
00000673: JUMPI
00000674: INVALID
00000675: JUMPDEST
00000676: DIV
00000677: SWAP1
00000678: POP
00000679: DUP1
0000067a: SWAP2
0000067b: POP
0000067c: POP
0000067d: SWAP3
0000067e: SWAP2
0000067f: POP
00000680: POP
00000681: JUMP
00000682: JUMPDEST
00000683: PUSH1 0x00
00000685: PUSH20 0xffffffffffffffffffffffffffffffffffffffff
0000069a: AND
0000069b: DUP2
0000069c: PUSH20 0xffffffffffffffffffffffffffffffffffffffff
000006b1: AND
000006b2: EQ
000006b3: ISZERO
000006b4: ISZERO
000006b5: ISZERO
000006b6: PUSH2 0x06be
000006b9: JUMPI
000006ba: PUSH1 0x00
000006bc: DUP1
000006bd: REVERT
000006be: JUMPDEST
000006bf: DUP1
000006c0: PUSH20 0xffffffffffffffffffffffffffffffffffffffff
000006d5: AND
000006d6: PUSH1 0x00
000006d8: DUP1
000006d9: SWAP1
000006da: SLOAD
000006db: SWAP1
000006dc: PUSH2 0x0100
000006df: EXP
000006e0: SWAP1
000006e1: DIV
000006e2: PUSH20 0xffffffffffffffffffffffffffffffffffffffff
000006f7: AND
000006f8: PUSH20 0xffffffffffffffffffffffffffffffffffffffff
0000070d: AND
0000070e: PUSH32 0x8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e0
0000072f: PUSH1 0x40
00000731: MLOAD
00000732: PUSH1 0x40
00000734: MLOAD
00000735: DUP1
00000736: SWAP2
00000737: SUB
00000738: SWAP1
00000739: LOG3
0000073a: DUP1
0000073b: PUSH1 0x00
0000073d: DUP1
0000073e: PUSH2 0x0100
00000741: EXP
00000742: DUP2
00000743: SLOAD
00000744: DUP2
00000745: PUSH20 0xffffffffffffffffffffffffffffffffffffffff
0000075a: MUL
0000075b: NOT
0000075c: AND
0000075d: SWAP1
0000075e: DUP4
0000075f: PUSH20 0xffffffffffffffffffffffffffffffffffffffff
00000774: AND
00000775: MUL
00000776: OR
00000777: SWAP1
00000778: SSTORE
00000779: POP
0000077a: POP
0000077b: JUMP
0000077c: INVALID
0000077d: LOG1
0000077e: PUSH6 0x627a7a723058
00000785: KECCAK256
00000786: EXTCODESIZE
00000787: PUSH19 0xeb28fa61513d0b78d9d97c6493bac7c6b3f646
0000079b: UNKNOWN(0xD6)
0000079c: UNKNOWN(0x4B)
0000079d: UNKNOWN(0xF8)
0000079e: UNKNOWN(0x2D)
0000079f: PUSH14