Ethernaut CTF - Preservation (Level 16)

Video Description

Get the free 30-day AI Mastery series 💌: https://insights.gradientlabs.co/ Work with me 💪: https://offerings.gradientlabs.co/ Next up! Level 16 - Preservation In this CTF series, we’re going to learn more about the practical side of smart contract auditing and security. If you’re interested in more/similar content, checkout my channel or website below. My digital dumping ground - dylandavis.net Additional Resources Ethernaut CTF - https://ethernaut.openzeppelin.com/ Web3 Bchain Dev - https://youtu.be/_YkulBTqIcQ 0xSage solution - https://medium.com/coinmonks/ethernaut-lvl-16-preservation-walkthrough-how-to-inject-malicious-contracts-with-delegatecall-81e071f98a12 Zuhaib solution - https://zuhaibmd.medium.com/ethernaut-level-16-preservation-2e37201cc56d Slot Storage in Privacy level 12 - https://youtu.be/Gpz8VbbbDfM?t=347 getStorageAt from Web3 JS - https://web3js.readthedocs.io/en/v1.5.2/web3-eth.html?highlight=get%20storage#getstorageat Smart Contract Dev storage explanation - https://youtu.be/Gg6nt3YW74o Libraries within Solidity - https://www.geeksforgeeks.org/solidity-libraries/ Delegate call explained by Smart Contract Dev - https://youtu.be/uawCDnxFJ-0 Unsafe Delegate Call Part 1 - https://youtu.be/bqn-HzRclps Unsafe Delegate Call Part 2 - https://youtu.be/oinniLm5gAM Delegatecall explained (blog) - https://medium.com/coinmonks/delegatecall-calling-another-contract-function-in-solidity-b579f804178c Delegatecall Solidity Docs - https://docs.soliditylang.org/en/v0.4.21/introduction-to-smart-contracts.html#delegatecall-callcode-and-libraries Timeline 00:00 - Intro to challenge 03:10 - Notes Review (main takeaway) 05:31 - Notes Review (slot storage) 09:10 - Notes Review (delegatecall) 12:10 - Code Review (target) 17:10 - Code Review (attack) 19:28 - Solving Challenge 24:48 - Outro