fork download
copy 
  1. class XORCryptor:
  2.     def __init__(self, key):
  3.         self.key = key
  4.  
  5.     def decrypt(self, encrypted_buffer):
  6.         return [byte ^ ord(self.key[i % len(self.key)]) for i, byte in enumerate(encrypted_buffer)]
  7.  
  8. def decrypt(encrypted_buffer, borrowed_string):
  9.     # Key for decryption
  10.     key = "CSUCKS"
  11.  
  12.     # Editing our borrowed value
  13.     borrowed_string += "PARTY FOUL! Here is your flag: "
  14.  
  15.     # Create decryption object
  16.     xor_cryptor = XORCryptor(key)
  17.  
  18.     # Decrypt the encrypted buffer
  19.     decrypted_buffer = xor_cryptor.decrypt(encrypted_buffer)
  20.  
  21.     # Print the raw decrypted bytes for inspection
  22.     print("Decrypted bytes:", decrypted_buffer)
  23.  
  24.     # Convert the decrypted buffer to a string (handling possible invalid UTF-8)
  25.     decrypted_str = ''.join(chr(byte) for byte in decrypted_buffer if 32 <= byte <= 126)
  26.  
  27.     # Append the decrypted string to the borrowed string
  28.     borrowed_string += decrypted_str
  29.  
  30.     # Print the final message
  31.     print(borrowed_string)
  32.  
  33. def main():
  34.     # Encrypted flag values (in hexadecimal)
  35.     hex_values = [
  36.         "41", "30", "20", "63", "4a", "45", "54", "76", "12", "90", "7e", "53", "63", "e1",
  37.         "01", "35", "7e", "59", "60", "f6", "03", "86", "7f", "56", "41", "29", "30", "6f", "08",
  38.         "c3", "61", "f9", "35"
  39.     ]
  40.  
Success #stdin #stdout 0.1s 14068KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Standard output is empty
https://ideone.com/q8KvR7
language:
Python 3 (python  3.12)
created:
22 hours ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!