2023from public repositories
Standconctf 2023
13 challenges with 16 published solutions between them. CTFtime has no listing for this event at all, so nothing built on CTFtime can show what it was made of. These writeups were found in public repositories instead. Each link is pinned to the commit it was read from.
Where these writeups liveUncategorised12
The upstream scoreboard did not say, so neither do we.
BabyCrypto
2 official solutionsBabyWeb
2 official solutionsRelicRace
2 official solutionsBabyBinary
1 official solutionBabyRev
1 official solutionBabyRop
1 official solutionBabyRop2
1 official solutionRanSomewhere
1 official solutionShellcoding
1 official solutionSimpleOverflow
1 official solutionUseAndForget
1 official solutionYeOldeNewsWebsite
1 official solution
Cryptography1
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
Fetus Crypto
1 official solution