One of the few challenges related to GraphQL
A super basic beginner web-reversing challenge.
A beginner crypto challenge that could be solved using the RsaCtfTool in a matter of seconds.
Another one-shot-solvable challenge
A fairly basic crypto challenge based on modular arithmetics explained in depth for player wanting to get a foot into CTFs.
The story of leaking all flags in the NahmCon-CTF with the technical details behind it, the disclosure, learnings and more.