2000from public repositories
The 2000s American Housing Crisis 2000
3 challenges with 3 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 liveCryptography3
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
DiceMarket
1 official solutionAlso written up in: dicegang/dicectf-quals-2026-challenges
DiceMarketDAO
1 official solutionAlso written up in: dicegang/dicectf-quals-2026-challenges
Setup
1 official solutionAlso written up in: dicegang/dicectf-quals-2026-challenges