2023weight 29.26DaVinciCode

DaVinciCTF 2023

5 challenges with 6 published community solutions between them. Solution links go to CTFtime’s task page, which aggregates every writeup for a challenge - individual blog posts rot, the aggregator does not.

Full task list on CTFtime

Misc4

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 decoder Cipher identifier and automatic decoder Regex tester with match offsets and capture groups Learn: Recognising encodings

Owner Pwned
1 pts1 writeup
Same technique in picoCTF: Permissions, Specialer, Codebook
Principiante
1 writeup
Same technique in picoCTF: Permissions, Specialer, Codebook
Upgreadable Casino
1 writeup
Same technique in picoCTF: Permissions, Specialer, Codebook
Virtuoso
1 writeup
Same technique in picoCTF: Permissions, Specialer, Codebook

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 decoder Vigenere cipher solver with automatic key recovery RSA decryption and attack runner Wiener’s attack on small RSA private exponents In-browser hash cracker with rule transforms Learn: Classical ciphers and frequency analysis Learn: RSA and the parameters that break it

Desintegrated RSA
100 pts2 writeups
- crypto
Same technique in picoCTF: StegoRSA, john_pollard, rsa_oracle

Misc4

Owner Pwned

Principiante

Upgreadable Casino

Virtuoso

Cryptography1

Desintegrated RSA

Other 2023 events