2026from public repositories
FCFS 2026
5 challenges with 5 published solutions between them. The writeups for this event were found in public repositories. Each link is pinned to the commit it was read from.
Where these writeups liveForensics4
Recover something from a file, a capture, or a disk image - often from a part of it the format says is unused.
Solve it with:File type identifier by magic bytesMagic byte and file signature tablePCAP analyzer for CTF network forensicsEXIF metadata viewerLearn: File forensics and carvingLearn: Network forensics
Forenzeek Compromission initiale
1 official solutionAlso written up in: WissemTy/CTF-Writeups
Grhelp Connect back
1 official solutionAlso written up in: WissemTy/CTF-Writeups
Grhelp Exfiltration
1 official solutionAlso written up in: WissemTy/CTF-Writeups
Also written up in: WissemTy/CTF-Writeups
Misc1
Everything that fits no other box: esolangs, puzzles, scripting exercises, and the jail escapes that have not yet earned their own category.
Solve it with:Brainfuck and esolang decoderCipher identifier and automatic decoderRegex tester with match offsets and capture groupsLearn: Recognising encodings
Times Square
1 official solutionAlso written up in: WissemTy/CTF-Writeups