Enigma Xplore 2.0 CTF
8 challenges with 14 published solutions between them. No writeups were ever filed against this event's listing, so its solutions were found in public repositories instead. Each link is pinned to the commit it was read from.
The event listingReverse engineering5
Work out what a compiled program does without its source, then work backwards from the check to the input that passes it.
Breaking Out of Yankin
1 official solutionAlso written up in: sajjadium/ctf-archives
Light Speed Escape
1 official solutionAlso written up in: sajjadium/ctf-archives
Steal the Battle Ship
1 official solutionAlso written up in: sajjadium/ctf-archives
The Force Awakens
1 official solutionAlso written up in: sajjadium/ctf-archives
The Quest for Laughtale Unveiling the Hidden Coordinates
1 official solutionAlso written up in: sajjadium/ctf-archives
Forensics2
Recover something from a file, a capture, or a disk image - often from a part of it the format says is unused.
Also written up in: sajjadium/ctf-archives, blackm4c/ctf-challanges-writeups
Also written up in: sajjadium/ctf-archives, blackm4c/ctf-challanges-writeups
Cryptography1
Recover a plaintext or a key from something that was supposed to protect it. In practice: identify the scheme, find the parameter the author got wrong, exploit it.