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github fuzzland ityfuzz blazing fast bytecode level hybrid fuzzer for smart contracts github skip to content navigation menu toggle navigation sign in appearance settings platform ai code creation github copilot write better code with ai github copilot app direct agents from issue to merge mcp registry new integrate external tools developer workflows actions automate any workflow codespaces instant dev environments issues plan and track work code review manage code changes code quality enforce quality at merge application security github advanced security find and fix vulnerabilities code security secure your code as you build secret protection stop leaks before they start explore why github documentation blog changelog marketplace view all features solutions by company size enterprises small and medium teams startups nonprofits by use case app modernization devsecops devops ci cd view all use cases by industry healthcare financial services manufacturing government view all industries 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submit feedback saved searches use saved searches to filter your results more quickly name query to see all available qualifiers see our documentation cancel create saved search sign in sign up appearance settings resetting focus you signed in with another tab or window reload to refresh your session you signed out in another tab or window reload to refresh your session you switched accounts on another tab or window reload to refresh your session dismiss alert message uh oh there was an error while loading please reload this page fuzzland ityfuzz public notifications you must be signed in to change notification settings fork 182 star 1 1k code issues 56 pull requests 7 discussions actions projects wiki security and quality 0 insights additional navigation options code issues pull requests discussions actions projects wiki security and quality insights fuzzland ityfuzz master branches tags go to file code open more actions menu folders and files name name last commit message last commit date latest commit history 1 175 commits 1 175 commits github github benches benches ityfuzzup ityfuzzup onchain_scripts onchain_scripts server server solidity_utils solidity_utils src src tests tests ui ui dockerignore dockerignore gitignore gitignore gitmodules gitmodules claude md claude md cname cname cargo lock cargo lock cargo toml cargo toml dockerfile dockerfile funding json funding json license license makefile toml makefile toml readme md readme md readme_cn md readme_cn md backtesting md backtesting md ci py ci py integration test md integration test md integration_test py integration_test py onchain_tests txt onchain_tests txt rust toolchain toml rust toolchain toml rustfmt toml rustfmt toml view all files repository files navigation readme mit license more items ityfuzz docs research paper twitter discord telegram ityfuzz is a blazing fast evm and movevm smart contract hybrid fuzzer that combines symbolic execution and fuzzing to find bugs in smart contracts offchain and onchain install curl l https ity fuzz land bash ityfuzzup example fuzzing deployed smart contract generating full exploit to steal funds from a contract with flashloan read only reentrancy vulnerability on polygon fork polygon at block 35718198 and fuzz the contract eth_rpc_url https polygon rpc com ityfuzz evm t 0xbcf6e9d27bf95f3f5eddb93c38656d684317d5b4 0x5d6c48f05ad0fde3f64bab50628637d73b1eb0bb c polygon flashloan onchain block number 35718198 onchain etherscan api key tr24xdqf35qcnk9pzbv8xeh2xrswtpwfwt get your own api key at https polygonscan com apis if this one is rate limited foundry invariant test run a foundry invariant test defined in invariant contract in test invariant sol replaces forge test mc test invariant sol invariant ityfuzz evm m test invariant sol invariant forge test for other examples and usages check out the docs performance on large real world smart contract projects ityfuzz finds 126 vulnerabilities while echidna finds 0 and mythril finds 9 for details refer to backtesting research paper and new bugs discovered on small real world smart contracts erc20 lottery etc ityfuzz gains 10 more test coverage than academia state of the art fuzzer smartian using 1 30 of the time on consensys s daedaluzz benchmark ityfuzz without symbolic execution finds 44 more bugs than echidna and 31 more bugs than foundry ityfuzz is also 2 5x faster than echidna and 1 5x faster than foundry features chain forking to fuzz contracts on any chain at any block number accurate exploit generation for precision loss integer overflow fund stealing uniswap pair misuse etc reentrancy support to concretely leverage potential reentrancy opportunities for exploring more code paths blazing fast power scheduling to prioritize fuzzing on code that is more likely to have bugs symbolic execution to generate test cases that cover more code paths than fuzzing alone flashloan support assuming attackers have infinite funds to exploit flashloan vulnerabilities liquidation support to simulate buying and selling any token from liquidity pools during fuzzing decompilation support for fuzzing contracts without source code supports complex contracts initialization using foundry setup script forking anvil rpc or providing a json config file backed by sota fuzzing engine libafl bugs found selected new vulnerabilities found project vulnerability assets at risks bsc rats nft integer overflow leading to unlimited minting 79k 9419 token incorrect logic leading to price manipulation 35k bsc mevbot unguarded dppflashloancall 19k freecash incorrect logic leading to price manipulation 12k 0xnoob token incorrect logic leading to price manipulation 7k baby wojak token incorrect logic leading to price manipulation 4k arrow incorrect position logic leading to fund loss found during audit ityfuzz can automatically generate exploits for 80 of previous hacks without any knowledge of the hack refer to backtesting for running previously hacked protocols sponsors grants manifold finance sui about blazing fast bytecode level hybrid fuzzer for smart contracts docs ityfuzz rs topics ethereum smart contracts blockchain solidity fuzzing move evm concolic execution sui aptos resources readme license mit license uh oh there was an error while loading please reload this page activity custom properties stars 1 1k stars watchers 14 watching forks 182 forks report repository releases 48 tags packages 0 uh oh there was an error while loading please reload this page uh oh there was an error while loading please reload this page contributors uh oh there was an error while loading please reload this page languages rust 92 2 solidity 4 5 python 1 7 shell 0 7 move 0 4 handlebars 0 3 other 0 2 footer 2026 github inc footer navigation terms privacy security status community docs contact manage cookies do not share my personal information you can t perform that action at this time