2022from public repositories
SDCTF 2022
8 challenges with 9 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 and on the authors’ own sites instead. Each repository link is pinned to the commit it was read from.
Where these writeups liveUncategorised4
The upstream scoreboard did not say, so neither do we.
Curl Up And Read
1 official solutionDovesign
1 official solutionOracle
1 official solution
Cryptography3
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
Tasty Crypto Roll
2 official solutions2022 05 10 SDCTF 2022 Tasty Crypto Roll
1 official solution
Web1
Reach data or functionality the application meant to keep from you - through its inputs, its tokens, or its trust in the client.
Solve it with:JWT decoder and signature verifierJWT alg=none bypass generatorWeb attack payload catalogJWT secret brute forceLearn: Web attacks and session tokens