XOR

Category
Cryptography
Points
-1
Solves
-1
Tags

PFFUQYTUONPSK5LAMNDXGJ35ER4CM5C7ORETY3A=

Flag Format: CIT{example_flag}

by ronnie

Ah another guessy crypto challenge. The challenge gives us a Base32 string because all the string is uppercase.

The step to solve this challenge:

  • Decode the Base32 string
  • Use dCode Cipher Identifier to identify the cipher used. The result is a ROT47 cipher.
  • Decode the string using ROT47 cipher. The result is a Base64 string.
  • Decode the Base64 string. The result is a gibberish string.
  • Find the pattern in the gibberish string use XOR with the flag format CIT{. It will reveal the key used to XOR the string, which is duck.
  • Use the key to XOR the gibberish string.

Link to CyberChef.

XOR Flag: CIT{Yft5Kx09E4Wx}