bi0sCTF 2022
8 challenges with 12 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 CTFtimeBinary exploitation3
Turn a memory-safety bug in a native binary into control of execution. Usually a stack overflow, a format string, or a heap primitive.
- safari
- pwn
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3
- pwn
- kernel
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3
- pwn
- vm
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3
Web2
Reach data or functionality the application meant to keep from you - through its inputs, its tokens, or its trust in the client.
- web
Same technique in picoCTF: Client-side-again, dont-use-client-side, Irish-Name-Repo 3
- sqli
- ssrf
- web
- crlfinjection
Same technique in picoCTF: Irish-Name-Repo 3, More SQLi, Secret Box
Misc2
Everything that fits no other box: esolangs, puzzles, scripting exercises, and the jail escapes that have not yet earned their own category.
- cssinjection
- react
- css
Same technique in picoCTF: Permissions, Specialer, Codebook
Same technique in picoCTF: Permissions, Specialer, Codebook
Reverse engineering1
Work out what a compiled program does without its source, then work backwards from the check to the input that passes it.
- exceptions
- rev
- malware
- windows
Same technique in picoCTF: WinAntiDbg0x100, WinAntiDbg0x200, WinAntiDbg0x300