2022weight 24.45Digital Overdose (Admins)
Digital Overdose Conference 2022 CTF
2 challenges with 2 published community solutions between them. Solution links go to CTFtime’s task page, which aggregates every writeup for a challenge - individual blog posts rot, the aggregator does not.
Full task list on CTFtimeCryptography1
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
- cryptography
Same technique in picoCTF: It's Not My Fault 2, StegoRSA, AES-ABC
Uncategorised1
The upstream scoreboard did not say, so neither do we.
Maya went on a trip!
1 official solutionAlso written up in: hackhijack64.tistory.com