Cryptography

Scrumbled and encrypted text

Whatever happen, google is your friend. There are a lot cryptography tools online. Some of good tool are made offline like OpenSSL.

Classic cipher / Simple decoder online tool

  1. https://quipqiup.com - quipqiup is a fast and automated cryptogram solver

  2. https://www.base64decode.org/ - base64 decoder

  3. https://cryptii.com/ - All in one tool

  4. https://rot13.com/ - Rot 1 - 25 decryptor

  5. https://www.dcode.fr - All in one tool

  6. http://rumkin.com/tools/cipher/ - All in one tool

Modern cryptography

  1. Cryptool

  2. John the Ripper

  3. Hashcat

    Cracking compressed file

  4. John the Ripper - john --wordlist=/usr/share/wordlists/rockyou.txt hash.txt

  5. fcrackzip - fcrackzip -D -u -p rockyou.txt filename.zip

  6. Hashcat

Note: Sometime there are some challenges that require you to develop your own decryptor for that particular challenges. Just make sure you have a good scripting/programming language to solve the challenges.