EVM Hound
A Minimalistic Rust library to extract all potential function selectors from EVM bytecode without source code.
Installation
$ cargo add evm_hound
Usage
// examples/basic.rs
use ethers::{
providers::{Http, Middleware, Provider},
types::Address,
};
use eyre::Result;
use evm_hound::{selectors_from_bytecode, string_selectors_from_bytecode};
// To Try:
// cargo run --example basic
#[tokio::main]
async fn main() -> Result<()> {
let provider = Provider::<Http>::try_from("https://rpc.flashbots.net/fast")?;
let token_addr: Address = "0xdac17f958d2ee523a2206206994597c13d831ec7".parse()?;
let code = provider.get_code(token_addr, None).await?;
let raw_selectors = selectors_from_bytecode(&code);
let string_selectors = string_selectors_from_bytecode(&code);
println!("found {} selectors", raw_selectors.len());
println!("{raw_selectors:?}");
println!("{string_selectors:?}");
Ok(())
}
Also, EVM Hound can detect basic contract types using extracted selectors:
pub enum ContractType {
/// ERC20 - Typical token contract
ERC20,
/// ERC721 - Typical NFT contract
ERC721,
/// Any other contract
ANY,
}
Check out example at examples/contract_type.rs.
Credits
Made for Hackers.tools Trading Simulator to search/bruteforce for potential methods that start trading.
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