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Every CTF
2015found by harvest

Insomni'hack 2015

38 challenges with 92 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 listing

Web21

Reach data or functionality the application meant to keep from you - through its inputs, its tokens, or its trust in the client.

Misc7

Everything that fits no other box: esolangs, puzzles, scripting exercises, and the jail escapes that have not yet earned their own category.

Uncategorised5

The upstream scoreboard did not say, so neither do we.

Forensics3

Recover something from a file, a capture, or a disk image - often from a part of it the format says is unused.

Reverse engineering2

Work out what a compiled program does without its source, then work backwards from the check to the input that passes it.

Other 2015 events