2020from public repositories
SpookyCTF 2020
4 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 liveCryptography3
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
Diffie
2 official solutionsAlso written up in: whaleshark271/CTF-Writeup, whaleshark271/CTF-Writeup
Totient
2 official solutionsAlso written up in: whaleshark271/CTF-Writeup, whaleshark271/CTF-Writeup
Dahdit
1 official solutionAlso written up in: whaleshark271/CTF-Writeup
Uncategorised1
The upstream scoreboard did not say, so neither do we.
Ghosts in the Graveyard
1 official solutionAlso written up in: whaleshark271/CTF-Writeup