Capture The Flag
Capture The Flag (CTF) is a famous game mode where attaquant has to steal the ennemy flag and bring it back to their own base. A CTF is composed of two teams fighting against each other. Each team has to defend their flag to not get it stolen by the adversary. In Cybersecurity, CTF organiser set up an environment where the players have to infiltrate the system with different means to retrieve the hidden flag. This has for goal to train pentesters, cyber analysts, or simply cyber passionates to simulate a cyber intrusion.
A CTF involves to find some vulnerabilities in the system, then the players must exploit them like in a real pentesting. The idea is to retrieve the flag which simulate a data exfiltration. Cyber security is a whole set of IT domains, therefore a CTF is usually composed of several exercices such as networking, cryptography, steganography, web, forensics. It is ordered by difficulties and is made for beginners as well as for experts.
In this section, the articles will present the CTFs that I have participated. You will see in details what kind of exercises you can encountered when participating to a CTF.
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