Earlier December I took part in the PHD CTF Quals with two friends of mine (Alkino and Siosm). Our notes are publicly available at fs.siosm.fr.

Keywords : phdays, ctf, scapy.

A lot of challs were quite easy (meteorite_rain) but we managed to solve a few harder ones such as traffic.cap and drink.pcap using scapy. Despite our efforts on artifact.exe (windows crackme), we were unable to solve it. I am interested in any explanation / solution on that one.