Labs / Rail Fence
- Challenge
- Released 16 Jul 2025
Rail Fence
Start the machine, hack the system, and find the hidden flags to complete this challenge and earn points!
1
Flags
1
Points
Start Lab Environment
~1-2 min setup
AWS dedicated
Private instance
Industry standard
Challenge
Rail Fence - Challenge Description
Challenge Overview
A message has been encrypted using the Rail Fence cipher. Your task is to decrypt the message to reveal the hidden flag in UUID format. The Rail Fence cipher is a transposition cipher that rearranges the characters of the plaintext.
Learning Objectives
- Learn about transposition ciphers
- Understand Rail Fence cipher mechanics
- Practice manual decryption techniques
- Develop pattern recognition skills
Challenge Details
The encrypted message uses a specific number of rails in the Rail Fence cipher. You need to determine the number of rails and decrypt the message to find the flag.