2020from public repositories
Posts Batpwn 2020
7 challenges with 7 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 liveCryptography7
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
2020 06 08 BATPWN 2020 Cryptographer
1 official solutionAlso written up in: deut-erium/WriteUps
2020 06 08 Batpwn 2020 Prefixes
1 official solutionAlso written up in: deut-erium/WriteUps
2020 06 08 BATPWN Mick Maybe
1 official solutionAlso written up in: deut-erium/WriteUps
Cryptographer
1 official solutionAlso written up in: deut-erium/WriteUps
M ick Maybe
1 official solutionAlso written up in: deut-erium/WriteUps
Prefixes
1 official solutionAlso written up in: deut-erium/WriteUps
Also written up in: deut-erium/WriteUps