MetaCTF CyberGames 2020
24 challenges with 37 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 CTFtimeMisc13
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
- webexploitation
Same technique in picoCTF: Permissions, Specialer, Codebook
- binaryexploitation
Same technique in picoCTF: Permissions, Specialer, Codebook
Same technique in picoCTF: Permissions, Specialer, Codebook
- binaryexploitation
Same technique in picoCTF: Permissions, Specialer, Codebook
- webexploitation
Same technique in picoCTF: Permissions, Specialer, Codebook
Same technique in picoCTF: Permissions, Specialer, Codebook
- webexploitation
Same technique in picoCTF: Permissions, Specialer, Codebook
- basic
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
Same technique in picoCTF: Permissions, Specialer, Codebook
Cryptography4
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.
- crytography
Same technique in picoCTF: StegoRSA, Timestamped Secrets, AES-ABC
- crytography
Same technique in picoCTF: StegoRSA, Timestamped Secrets, AES-ABC
Same technique in picoCTF: StegoRSA, john_pollard, rsa_oracle
- cryptography
Same technique in picoCTF: StegoRSA, Timestamped Secrets, AES-ABC
Web4
Reach data or functionality the application meant to keep from you - through its inputs, its tokens, or its trust in the client.
- webexploitation
Same technique in picoCTF: Client-side-again, dont-use-client-side, Irish-Name-Repo 3
- webexploitation
Same technique in picoCTF: logon, Cookie Monster Secret Recipe, Old Sessions
- wordpress
- web
- php
Same technique in picoCTF: Client-side-again, dont-use-client-side, Irish-Name-Repo 3
- web
- jwt
Same technique in picoCTF: Java Code Analysis!?!, JaWT Scratchpad, JAuth
Forensics2
Recover something from a file, a capture, or a disk image - often from a part of it the format says is unused.
- forensics
Same technique in picoCTF: FindAndOpen, c0rrupt, extensions
- forensics
Same technique in picoCTF: FindAndOpen, c0rrupt, extensions
Reverse engineering1
Work out what a compiled program does without its source, then work backwards from the check to the input that passes it.
- reverse-engineering
Same technique in picoCTF: WinAntiDbg0x100, WinAntiDbg0x200, WinAntiDbg0x300