2020weight 15.20SYPER
CTF Metared UNLP.EDU.AR Stage
3 challenges with 4 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 CTFtimeCryptography3
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
Also written up in: r3yc0n1c/CTF-Writeups
- crypto
- python
- math
Same technique in picoCTF: Sequences, C3, It's Not My Fault 2
101 Broadcast
1 official solutionAlso written up in: r3yc0n1c/CTF-Writeups
- programming
- misc
- crypto
Same technique in picoCTF: It's Not My Fault 2, StegoRSA, AES-ABC