The annual CTF organized by the ANSSI. Here is my writeup for a set of forensic challenges around a single Linux memory dump.
Web challenge of the annual CTF organized by the ANSSI, where PHP sessions can be used to perform a LFI.
Lighter than the official manual but summarizing many options.
Funny crypto challenge in which we must crack the vulnerable AES implementation of a Python ransomware to decrypt JPG files.
Nice forensic/crypto chall about weak TLS implementation inside a PCAP file, played during the 2nd edition of the Santhacklaus CTF