2024no writeups on CTFtime
squ1rrel CTF 2024
5 challenges with 5 published solutions between them. CTFtime lists this event but has no writeups filed against it, so it is absent from the index CTFtime feeds. These were found in public repositories instead. Each link is pinned to the commit it was read from.
The event on CTFtimeCryptography5
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
Lazy Rsa
1 official solutionPartial Rsa
1 official solutionRsa Rsa Rsa
1 official solutionSqu1rrel Lottery
1 official solutionSqu1rrel Treasury
1 official solution