Writeups

307 results

HASBLCTF26/baby-counting-fingers

HASBLCTF26 — baby-counting-fingers

Team: Abdelkader · CTFtime rating: not rated · Source: https://ctftime.org/writeup/40824 · Topics: writeup, ctf, cracking, cryptography, crypto

CryptoBlog#crypto #cracking #ctfJun 3, 2026

Root-Me/Encoding - Codebook·20pts

Encoding - Codebook — Root-Me

Cryptanalysis path for Encoding - Codebook — algebraic manipulation, small subgroup checks, and a plausible attack narrative without dumping complete secret material..

Cryptomedium#crypto #root-me #mediumMay 26, 2026

Root-Me/Circular Bit Shift·20pts

Circular Bit Shift — Root-Me

For Circular Bit Shift, ciphertext structure suggests hybrid encoding.

Cryptomedium#crypto #root-me #mediumMay 26, 2026

Root-Me/Known plaintext - XOR·20pts

Known plaintext - XOR — Root-Me

For Known plaintext - XOR, ciphertext structure suggests hybrid encoding.

Cryptomedium#crypto #root-me #mediumMay 26, 2026

Root-Me/ELF64 - PID encryption·15pts

ELF64 - PID encryption — Root-Me

Crypto challenge ELF64 - PID encryption: classical cipher layers and modular arithmetic.

Cryptomedium#crypto #root-me #mediumMay 26, 2026

Root-Me/File - PKZIP·15pts

File - PKZIP — Root-Me

Crypto challenge File - PKZIP: classical cipher layers and modular arithmetic.

Cryptomedium#crypto #root-me #mediumMay 26, 2026

Root-Me/Pixel Madness·15pts

Pixel Madness — Root-Me

Crypto challenge Pixel Madness: classical cipher layers and modular arithmetic.

Cryptomedium#crypto #root-me #mediumMay 26, 2026

Root-Me/Monoalphabetic substitution - Caesar·15pts

Monoalphabetic substitution - Caesar — Root-Me

Crypto challenge Monoalphabetic substitution - Caesar: classical cipher layers and modular arithmetic.

Cryptomedium#crypto #root-me #mediumMay 26, 2026

Root-Me/CISCO - Salted Password·10pts

CISCO - Salted Password — Root-Me

For CISCO - Salted Password, ciphertext structure suggests hybrid encoding.

Cryptoeasy#crypto #root-me #easyMay 26, 2026

Root-Me/Shift cipher·10pts

Shift cipher — Root-Me

Crypto challenge Shift cipher: classical cipher layers and modular arithmetic.

Cryptoeasy#crypto #root-me #easyMay 26, 2026

Root-Me/Hash - SHA-2·5pts

Hash - SHA-2 — Root-Me

Cryptanalysis path for Hash - SHA-2 — algebraic manipulation, small subgroup checks, and a plausible attack narrative without dumping complete secret material..

Cryptoeasy#crypto #root-me #easyMay 26, 2026

Root-Me/Hash - Message Digest 5·5pts

Hash - Message Digest 5 — Root-Me

Cryptanalysis path for Hash - Message Digest 5 — algebraic manipulation, small subgroup checks, and a plausible attack narrative without dumping complete secret material..

Cryptoeasy#crypto #root-me #easyMay 26, 2026

Root-Me/Encoding - ASCII·5pts