During the European Cyber Week (ECW), a Capture the Flag (CTF) was organised on November 16th at Rennes in France. A preselection took place from October 14, 2022 to October 30, 2022. Our security researcher Express got to the final round and wrote some write-ups for the reverse-engineering category. The challenges were created by the Thalium team and were interesting to solve.
On the agenda:
a Windows challenge involving a minifilter driver an UEFI challenge with some EFI bytecode reversing an OpenGL based challenge Without any further ado, here are the write-ups.