2021from public repositories
Cscg 2021
6 challenges with 6 published solutions between them. The writeups for this event were found in public repositories. Each link is pinned to the commit it was read from.
Where these writeups liveUncategorised4
The upstream scoreboard did not say, so neither do we.
Client
1 official solutionAlso written up in: liona24/ctf-writeups
Main2
1 official solutionAlso written up in: liona24/ctf-writeups
Main3
1 official solutionAlso written up in: liona24/ctf-writeups
Secure Bank
1 official solutionAlso written up in: liona24/ctf-writeups
Cryptography2
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
Secret Underground 2
1 official solutionAlso written up in: dishankgoel/CTF-Writeups
Secret Underground 3
1 official solutionAlso written up in: dishankgoel/CTF-Writeups