2020from public repositories
Nullcom Hackim 2020
2 challenges with 3 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 liveCryptography1
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
RockPaperScissors
2 official solutionsAlso written up in: Nameshield-CTF/WriteUps, Nameshield-CTF/WriteUps
Uncategorised1
The upstream scoreboard did not say, so neither do we.
Zelda Adventures
1 official solutionAlso written up in: Nameshield-CTF/WriteUps