2024from public repositories
Jersey CTF IV 2024
7 challenges with 7 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 liveCryptography4
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
Aces Aes
1 official solutionadveRSAry
1 official solutionAttn Agents
1 official solutionMutant Mayhem
1 official solution
OSINT2
Answer a question about the real world from public sources. The work is pivoting between identifiers, not exploiting anything.
Cyber Daddy
1 official solutionThe Golden Falcon And The Rugged Lands
1 official solution
Forensics1
Recover something from a file, a capture, or a disk image - often from a part of it the format says is unused.
Solve it with:File type identifier by magic bytesMagic byte and file signature tablePCAP analyzer for CTF network forensicsEXIF metadata viewerLearn: File forensics and carvingLearn: Network forensics
Vibrations
1 official solution