SnykCon 2025
23 challenges with 57 published solutions between them. CTFtime has no listing for this event at all, so nothing built on CTFtime can show what it was made of. These writeups were found in public repositories instead. Each link is pinned to the commit it was read from.
Where these writeups liveWeb8
Reach data or functionality the application meant to keep from you - through its inputs, its tokens, or its trust in the client.
D0nutShop
3 official solutionsPlantly
3 official solutionsTimeOff
3 official solutionsUnfurl
3 official solutionsVulnScanner
3 official solutionsWeblog
3 official solutionsWHO IS JH
3 official solutionsidi0Tic
2 official solutions
Reverse engineering6
Work out what a compiled program does without its source, then work backwards from the check to the input that passes it.
An Offset Among Friends
2 official solutionsCrabshell
2 official solutionsEither Or
2 official solutionsIts go time
2 official solutionsLetters2nums
2 official solutionsMath for Me
2 official solutions
Uncategorised5
The upstream scoreboard did not say, so neither do we.
Screaming Crying Throwing up
3 official solutionsZero Ex Six One
3 official solutionsAdditional Information Needed
2 official solutionsCalculator
2 official solutions
Forensics2
Recover something from a file, a capture, or a disk image - often from a part of it the format says is unused.
ClickityClack
3 official solutionsFree Range Packets
3 official solutions
Misc1
Everything that fits no other box: esolangs, puzzles, scripting exercises, and the jail escapes that have not yet earned their own category.
Coding Mountains
2 official solutions
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.
Padding Gambit
2 official solutions