2025from public repositories
Athack Ctf 2025
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
Also written up in: octo-kumo/ctf-writeups
Also written up in: octo-kumo/ctf-writeups
Phantom Trails
1 official solutionAlso written up in: octo-kumo/ctf-writeups
Rogue Signals
1 official solutionAlso written up in: octo-kumo/ctf-writeups
Web1
Reach data or functionality the application meant to keep from you - through its inputs, its tokens, or its trust in the client.
Solve it with:JWT decoder and signature verifierJWT alg=none bypass generatorWeb attack payload catalogJWT secret brute forceLearn: Sessions, tokens and access control
Apocalypse
1 official solutionAlso written up in: octo-kumo/ctf-writeups