Show HN: How to hack smart contracts (Ethernaut walkthrough series)

I’m publishing a series of technical walkthroughs for Ethernaut’s smart contract hacking puzzles.

Ethernaut's been an excellent learning resource to dive deeper into the vulnerabilities of a Turing complete language on the blockchain, like Solidity.

Throughout the 18 levels, you reproduce some of the biggest hacks in Ethereum history, i.e. the 50M DAO hack, resulting from a re-entrancy problem and the $30M Parity hack, induced by a delegatecall() exploitation…

Here's the first post, on how to abuse fallback function vulnerabilities