Every trainee goes through the main set, composed of nearly 100 challenges. Plenty of additional ones are available, depending on your speed, taste, skills and professional needs. No way to get bored!
Among the challenges available on our CTF platform: complex brute-force, data extraction, support of custom formats, automatic management of anti-CSRF tokens, WebSockets, weak cryptography, webhooks, NoSQL injections, authorizations bugs, aggressive disconnection, JWT-authenticated APIs, arbitrary Java deserialization, blind stored XSS, instrumented Java applications, strict workflows, etc.