This cybersecurity challenge was organized by ANSSI (Agence Nationale de la Sécurité des Systèmes d'Information). The CTF starts on the 24th of April and end on the 3rd of May 2021. It is a Jeopardy CTF, so the challenges were around web, cryptography, digital investigation, reverse engineering and exploitation.

Here are the write-ups of the challenges I have succeded:

• Rituel en Chaine
• Rituel du Boutisme
• Bofbof
• Bonus Points
• Push It to the Limit
• Guessy
• La PIN
• Ordiphone 0
• Malware 1/3
• BaguetteVPN
• My Whois
• Privesc Me (1)
• Clair connu
• Random Search
• Dérèglement