2022from public repositories
Newstar Ctf 2022
7 challenges with 7 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 liveUncategorised6
The upstream scoreboard did not say, so neither do we.
Also written up in: AvavaAYA/ctf-writeup-collection
Week1
1 official solutionAlso written up in: pj-newstar/newstar-ctf-2022
Week2
1 official solutionAlso written up in: pj-newstar/newstar-ctf-2022
Week3
1 official solutionAlso written up in: pj-newstar/newstar-ctf-2022
Week4
1 official solutionAlso written up in: pj-newstar/newstar-ctf-2022
Week5
1 official solutionAlso written up in: pj-newstar/newstar-ctf-2022
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
minVector Lattice InverseProblem2
1 official solutionAlso written up in: kokifish/CTF-detailed-writeups