At least our ETA is better than M$. http://xkcd.com/612/ reverse.bin Summary: optimizing an algorithm using Treap data structure and CRC32 properties.
Tag: CRC32
Sep 07
MMA CTF 2015 – Motto Mijikai Address (Crypto/Web 100+300)
Login as admin and get the flag1. mmaddress.7z Summary: breaking HMAC-CRC512