2024from public repositories
nexzero CTF 2024
10 challenges with 10 published solutions between them. CTFtime has no listing for this event at all, so nothing built on CTFtime can show what it was made of. These writeups were found in public repositories instead. Each link is pinned to the commit it was read from.
Where these writeups liveCryptography5
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.
Solve it with:Cipher identifier and automatic decoderVigenere cipher solver with automatic key recoveryRSA decryption and attack runnerWiener’s attack on small RSA private exponentsIn-browser hash cracker with rule transformsLearn: Classical ciphers and frequency analysisLearn: RSA and the parameters that break it
Base64
1 official solutionConfusing Conundrum
1 official solutionRsa Odyssey
1 official solutionShifter
1 official solution
Uncategorised5
The upstream scoreboard did not say, so neither do we.
Manini Case0
1 official solutionManini Case3
1 official solutionPerpetrator
1 official solutionRemote Digital Problems
1 official solution