Extracts function selectors from EVM bytecode, even for unverified contracts.
- Python & JavaScript implementations
- Clean code with zero dependencies
- Faster and more accurate than other tools
- Tested on Solidity and Vyper compiled contracts
$ npm i evmoleimport {functionSelectors} from 'evmole'
// Also supported: const e = require('evmole'); e.functionSelectors();
const code = '0x6080604052600436106025575f3560e01c8063b69ef8a8146029578063d0e30db014604d575b5f80fd5b3480156033575f80fd5b50603b5f5481565b60405190815260200160405180910390f35b60536055565b005b345f8082825460639190606a565b9091555050565b80820180821115608857634e487b7160e01b5f52601160045260245ffd5b9291505056fea2646970667358221220354240f63068d555e9b817619001b0dff6ea630d137edc1a640dae8e3ebb959864736f6c63430008170033'
console.log( functionSelectors(code) )
// Output(list): [ 'b69ef8a8', 'd0e30db0' ]$ pip install evmole --upgradefrom evmole import function_selectors
code = '0x6080604052600436106025575f3560e01c8063b69ef8a8146029578063d0e30db014604d575b5f80fd5b3480156033575f80fd5b50603b5f5481565b60405190815260200160405180910390f35b60536055565b005b345f8082825460639190606a565b9091555050565b80820180821115608857634e487b7160e01b5f52601160045260245ffd5b9291505056fea2646970667358221220354240f63068d555e9b817619001b0dff6ea630d137edc1a640dae8e3ebb959864736f6c63430008170033'
print( function_selectors(code) )
# Output(list): ['b69ef8a8', 'd0e30db0']See examples for more
FP/FN - False Positive/False Negative errors; smaller is better
| Dataset | simple | whatsabi | evmole-js (py) | ||
| largest1k 1000 contracts 24427 functions |
FP/FN contracts: | 95 / 9 | 38 / 8 | 1 / 0 🥇 | |
| FP/FN functions: | 749 / 12 | 38 / 8 🥇 🥈 | 192 / 0 🥈 🥇 | ||
| Time: | 2.06s | 3.8s | 1.99s (2.09s) 🚀 | ||
| random50k 50000 contracts 1171102 functions |
FP/FN contracts: | 4136 / 77 | 251 / 31 | 1 / 9 🥇 | |
| FP/FN functions: | 14652 / 96 | 261 / 32 | 3 / 10 🥇 | ||
| Time: | 32.3s | 71.13s | 25.63s (33.56s) 🚀 | ||
| vyper 780 contracts 21244 functions |
FP/FN contracts: | 185 / 480 | 178 / 780 | 0 / 0 🥇 | |
| FP/FN functions: | 197 / 12971 | 181 / 21244 | 0 / 0 🥇 | ||
| Time: | 1.71s | 2.52s | 1.58s (1.8s) 🚀 | ||
See benchmark/README.md for the methodology and commands to reproduce these results
Short: Executes code with a custom EVM and traces CALLDATA usage.
Long: TODO
MIT