Breaking smart contracts

Some of the most financially devastating hacks in recent years have happened on the blockchain. This Ethereum focused workshop, will teach you the fundamentals of writing and breaking smart contracts.

In this workshop, we will teach students how to write smart contracts in the Solidity programming language. Solidity is easy to learn, but hard to get right.

The approach to training we’ll take in this session will be to provide a series of simple coding challenges, where participants are asked to write the code to implement a simple program, such as a coin toss, a transferable token (like a coin), or an auction. We’ll allow an appropriate amount of time for each step, and then provide a solution.

Then the fun part! We will walk the participants through the steps to break their contracts.

Classes of vulnerabilities we’ll explore include:

Overflows Reentrancy attacks Forcible sends Front Running

Participants must know or have:

Basic programming skills

Maurelian ,

Maurelian is a lead security engineer at ConsenSys Diligence, where he works to ensure that Ethereum smart contracts are transparent, trustworthy, and reliable. He helped build a decentralized name registrar for the Ethereum Name Service; authoring the spec and auditing the final implementation. He is a regular writer and speaker on smart contract security. Prior to joining ConsenSys, Maurelian worked at Coinbase.