Google Capture The Flag 2023
16 challenges with 41 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 CTFtimeMisc11
Everything that fits no other box: esolangs, puzzles, scripting exercises, and the jail escapes that have not yet earned their own category.
Same technique in picoCTF: Permissions, Specialer, Codebook
Same technique in picoCTF: Permissions, Specialer, Codebook
Same technique in picoCTF: Permissions, Specialer, Codebook
Same technique in picoCTF: Permissions, Specialer, Codebook
Mine The Gap
2 writeupsSame technique in picoCTF: Permissions, Specialer, Codebook
NPC
2 writeupsSame technique in picoCTF: Permissions, Specialer, Codebook
Same technique in picoCTF: Permissions, Specialer, Codebook
Same technique in picoCTF: Permissions, Specialer, Codebook
MHK2
1 writeupSame technique in picoCTF: Permissions, Specialer, Codebook
Postviewer v2
1 writeupSame technique in picoCTF: Permissions, Specialer, Codebook
Same technique in picoCTF: Permissions, Specialer, Codebook
Reverse engineering2
Work out what a compiled program does without its source, then work backwards from the check to the input that passes it.
oldschool
2 writeups- rev
- angr
- symbolic_execution
- gdb
Same technique in picoCTF: GDB baby step 1, Checkpass, Easy as GDB
- python
- reversing
Same technique in picoCTF: keygenme-py, Shop, patchme.py
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.
- lcg
- crypto
Same technique in picoCTF: StegoRSA, Timestamped Secrets, AES-ABC
Web1
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
Binary exploitation1
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