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huichain/README.md

Hi, I'm Hui Chan

Software engineer transitioning into smart contract security and Web3 tooling.

Background

  • C++ — Camera pipelines and real-time 3D rendering (graphics math, performance-critical code, memory and edge-case handling)
  • C# — Desktop software for industrial machine-vision systems
  • The same engineering rigor — reliability, edge cases, low-level debugging — is what I'm bringing into smart contract security

Now focusing on

  • Reproducing real Solidity vulnerabilities with Foundry
  • Writing PoCs, fixes, and audit-style writeups
  • Building Web3 security tooling

Featured Project

smart-contract-security-lab

A growing Foundry-based lab of vulnerable contracts, attacker contracts, fixed implementations, and short writeups. Built day by day, in public.

Live: a reentrancy attack drains a 10 ETH vault with only 1 ETH of attacker capital by re-entering withdraw() 11 times before the vulnerable balance update fires.

Next: a fixed version using checks-effects-interactions + OpenZeppelin's ReentrancyGuard.

Tech

Solidity · Foundry · EVM · Python · Go · C# · C++

Connect

Popular repositories Loading

  1. smart-contract-security-lab smart-contract-security-lab Public

    Foundry-based smart contract security lab: vulnerable contracts, exploit PoCs, and fixes.

    Solidity

  2. huichain huichain Public