BlueHens CTF 2022
17 challenges with 21 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 exploitation11
Turn a memory-safety bug in a native binary into control of execution. Usually a stack overflow, a format string, or a heap primitive.
- pwn
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3
- pwn
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3
- pwn
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3
- pwn
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3
- pwn
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3
- pwn
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3
- pwn
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3
- pwn
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3
- pwn
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3
- canary
- pwn
- shell
Same technique in picoCTF: Guessing Game 1, x-sixty-what, format string 3
- glibc234
- pwn
- heap
Same technique in picoCTF: tea-cash, sice_cream, zero_to_hero
Web1
Reach data or functionality the application meant to keep from you - through its inputs, its tokens, or its trust in the client.
- curl
- web
Same technique in picoCTF: Client-side-again, dont-use-client-side, Irish-Name-Repo 3
Reverse engineering1
Work out what a compiled program does without its source, then work backwards from the check to the input that passes it.
- esolangs
- rev
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.
- baby
- forensics
Same technique in picoCTF: investigation_encoded_1, investigation_encoded_2, m00nwalk
Steganography1
Find the payload hidden inside a carrier that looks ordinary. Bit planes, appended data, metadata, and audio spectrograms.
- steg
Same technique in picoCTF: FindAndOpen, StegoRSA, Glory of the Garden
Misc1
Everything that fits no other box: esolangs, puzzles, scripting exercises, and the jail escapes that have not yet earned their own category.
- misc
Same technique in picoCTF: Permissions, Specialer, Codebook
OSINT1
Answer a question about the real world from public sources. The work is pivoting between identifiers, not exploiting anything.
- misc
- osint
Same technique in picoCTF: Permissions, Specialer, Codebook