A Dutch CTF event with a Training Mission to practice, and a real CTF after. Part of the European Cyber Security Challenge. The challenges were all high quality and good learning material

WebReversingEncoding +150 points


Generate an icon from a password. Reverse the algorithm of an open source library to find a correct password and bypass the check

CryptoScriptingReversing +150 points

Watering System

A 3 part cryptography challenge with brute-forcing, XOR and reversing an encryption algorithm. Learn a lot of different crypto techniques in one challenge

WebFilter BypassRCE +321 points

File Upload (Training Mission)

A web challenge in the Training Mission, where we first bypass a login, and then upload a shell using some .htaccess tricks