DownUnderCTF 2024
13 challenges with 16 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 CTFtimeMisc5
Everything that fits no other box: esolangs, puzzles, scripting exercises, and the jail escapes that have not yet earned their own category.
- misc
- easy
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
Cryptography3
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.
- beginner
- permutations
- crypto
Same technique in picoCTF: StegoRSA, Timestamped Secrets, AES-ABC
- crypto
Same technique in picoCTF: StegoRSA, Timestamped Secrets, AES-ABC
- crt
- math
- easy
- crypt
- rsa
Same technique in picoCTF: StegoRSA, john_pollard, rsa_oracle
Web2
Reach data or functionality the application meant to keep from you - through its inputs, its tokens, or its trust in the client.
- web
- beginner
Same technique in picoCTF: Client-side-again, dont-use-client-side, Irish-Name-Repo 3
- web
- easy
Same technique in picoCTF: Client-side-again, dont-use-client-side, Irish-Name-Repo 3
OSINT2
Answer a question about the real world from public sources. The work is pivoting between identifiers, not exploiting anything.
- osint
- easy
Same technique in picoCTF: Permissions, Specialer, Codebook
- medium
- osint
Same technique in picoCTF: Permissions, Specialer, Codebook
Forensics1
Recover something from a file, a capture, or a disk image - often from a part of it the format says is unused.
Same technique in picoCTF: FindAndOpen, c0rrupt, extensions