2024from public repositories
Diver 2024
34 challenges with 34 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 liveUncategorised27
The upstream scoreboard did not say, so neither do we.
Accident
1 official solutionAd Directiare
1 official solutionChain
1 official solutionChampionships
1 official solutionChiban
1 official solutionConstruction
1 official solutionContainer
1 official solutionDream
1 official solutionImagetrack
1 official solutionIsland
1 official solutionItaly
1 official solutionMapper
1 official solutionOffice
1 official solutionOsprey1
1 official solutionOsprey2
1 official solutionPaddy
1 official solutionPromoter
1 official solutionProtest
1 official solutionPublic Service
1 official solutionSatellite
1 official solutionSerial
1 official solutionUploader
1 official solutionVenue
1 official solutionYoutuber
1 official solution
Misc5
Everything that fits no other box: esolangs, puzzles, scripting exercises, and the jail escapes that have not yet earned their own category.
Solve it with:Brainfuck and esolang decoderCipher identifier and automatic decoderRegex tester with match offsets and capture groupsLearn: Recognising encodings
Howmany
1 official solutionLabel
1 official solutionNumber
1 official solutionTimestamp
1 official solutionWumpus
1 official solution
Cryptography2
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
Akeome
1 official solution