Hacking Ethereum Damn Vulnerable DeFi (Part I)

Publicado el Publicada en Análisis de vulnerabilidades, Explotación, Programación

The purpose of this post is to explain how to learn offensive security of DeFi smart contracts in Ethereum blockchain. First challenge was about stop service, named «unstoppable» contract. There’s a lending pool with a million DVT tokens in balance, offering flash loans for free. If only there was a way to attack and stop […]

Hacking Ethereum Smart Contract Ponzi Schemes

Publicado el Publicada en Análisis de vulnerabilidades, Explotación, Programación

Security is the most important consideration when we writing smart contracts. All is public in Ethereum, for example, etherscan which is the main source of checking source code from contracts deployed. Therefore, everything is public anyone can check source code, find issues and make exploits to steal big amount of money in critical cases. Logical […]