Very Rotten

Category
Cryptography
Tags

TFJDe0gzeV9ldmlfdzMzX0FYQ0M2V19Wa1hidldINDYxTXR1YlgyOXZnYn0=

Flag Format: CIT{example_flag}

by ronnie

Ah what a guessy crypto challenge. The challenge gives us a Base64 string.

The step to solve this challenge:

  • Decode the Base64 string
  • Brute force the ROT13 cipher (Rotate uppercase and numbers) and you will find the flag format CIT{} in amount 17.
  • Brute force the ROT13 cipher (Rotate lowercase) and you will find the english readable words in amount 22.

Link to CyberChef.

Very Rotten Flag: CIT{Y0u_are_s00_ROTT3N_MgOxrNY138DpqxO96rcx}