We found the frontend code for a remote encryption service at nc challs.sieberrsec.tech 3477:
import turbofastcrypto # The source code for this module is only available for part 2 of this challenge :)
while 1:
plaintext = input('> ')
ciphertext = turbofastcrypto.encrypt(plaintext)
print('Encrypted: ' + str(ciphertext))My partner says it operates under the hood with "XOR", whatever that means. I need you to recover the key.
Author: @main
- Reset the connection if you're having trouble.
The server files for this challenge are located under the Pwn folder here. The flag for this challenge is IRS{secrets_are_revealed!!}.