CyBRICS CTF 2021
6 challenges with 7 published community solutions between them. Solution links go to CTFtime’s task page, which aggregates every writeup for a challenge - individual blog posts rot, the aggregator does not.
Full task list on CTFtimeWeb2
Reach data or functionality the application meant to keep from you - through its inputs, its tokens, or its trust in the client.
- web
- redirect
Same technique in picoCTF: Client-side-again, dont-use-client-side, Irish-Name-Repo 3
- web
- misc
- lsb
- rebyc
- game
- stegano
- captcha
Same technique in picoCTF: Client-side-again, dont-use-client-side, Irish-Name-Repo 3
Reverse engineering2
Work out what a compiled program does without its source, then work backwards from the check to the input that passes it.
- windows
- vm
- reverse
Same technique in picoCTF: WinAntiDbg0x100, WinAntiDbg0x200, WinAntiDbg0x300
- cpp
- rev
- exceptions
- reverse
Same technique in picoCTF: WinAntiDbg0x100, WinAntiDbg0x200, WinAntiDbg0x300
Forensics1
Recover something from a file, a capture, or a disk image - often from a part of it the format says is unused.
- jpeg
- network
Same technique in picoCTF: FindAndOpen, c0rrupt, extensions
Misc1
Everything that fits no other box: esolangs, puzzles, scripting exercises, and the jail escapes that have not yet earned their own category.
- misc
- coding
- gif
- rebyc
Same technique in picoCTF: Permissions, Specialer, Codebook