UrchinSec Tanzania National CTF MMXXIV
7 challenges with 7 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 CTFtimeCryptography6
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.
- cryptography
Same technique in picoCTF: StegoRSA, Timestamped Secrets, AES-ABC
- cryptography
Same technique in picoCTF: StegoRSA, Timestamped Secrets, AES-ABC
- cryptography
Same technique in picoCTF: StegoRSA, Timestamped Secrets, AES-ABC
- cryptography
Same technique in picoCTF: StegoRSA, john_pollard, rsa_oracle
- cryptography
Same technique in picoCTF: StegoRSA, Timestamped Secrets, AES-ABC
- cryptography
Same technique in picoCTF: Custom encryption, triple-secure, XtraORdinary
OSINT1
Answer a question about the real world from public sources. The work is pivoting between identifiers, not exploiting anything.
- osint
Same technique in picoCTF: Permissions, Specialer, Codebook