A place for talking about the Ethereum Virtual Machine on Farcaster.

Check out my Rust 🦀 solver for the latest Philosopher Stone challenge by @horsefacts.eth 
https://github.com/igorline/curta_18_rs

I just cleaned it up today. Let's thread this together! 🧵

I'm eth newbie..just learning
(working on @farcaster)

terminally.online

The challenge is neatly crafted and well explained by the author now.
https://twitter.com/eth_call/status/1706029458275119205

I teamed up with @plotchy and popular to tackle it. While @plotchy quickly grasped the essence of the puzzle, integrating with flashbots took some time provided valuable learning.

EVM Security. Optimizoor. CTF Cracker. Interested in Static Analyzers, Fuzzers, Symbolic Execution. Security researcher @ Nascent

Top4 @curta_ctf

ZK Fellow @yAcademyDAO

Cook at CryptoKitchen

My teammates managed to be 3rd and 4th to solve it 👏 . But I was away. Taking a risk and to practice, I chose to solve it with Rust.

First, I created a simple huff contract to return the essence. The outcome? A concise runtime bytecode: `636cbf043d60e01b5f5260205ff3`

I wrote some exhaustive search for garbage to append to runtime bytecode to get expected code hash. Not much optimized but finds hash starting with 3 bytes under 5-10 min

Also you have to calculate the address of newly Codex clone to call that uses create2 and salt generated from current block number. Implemented it in Rust

After you got your deploy bytecode you are ready to submit your bundle using flashbots. I used https://github.com/paradigmxyz/mev-share-rs by paradigm. Since flashbots does not produce every block, I implemented logic to resubmit at each block. You would have to stop it :)

As a result 8 interconnected txs in one block 😅
https://flashbots-explorer.marto.lol/?block=18198204

Would be happy to receive your feedback on my Rust code