rollthedice_solve.py

from Crypto.Cipher import AES
from pwn import *

ciphertext = 'YWFhYWFhYWFhYWFhYWFhYQ=='

one = 'ICAgICAgICAgICAxNTc1Mw=='
two = 'ICAgICAgICAgICA2Nzc5Nw=='
three = 'ICAgICAgICAgICA0NDQ0NQ=='
four = 'ICAgICAgICAgICAyMzU2Mw=='
five = 'ICAgICAgICAgICAgNDc3OA=='
six = 'ICAgICAgICAgICA0NzM4MQ=='

r = remote('challenges.hackover.h4q.it', 1415)

while True:
   print r.recvuntil('My dice roll: ')
   diceroll = r.recvuntil('==\n').strip()
   print diceroll
   print r.recvuntil('Your dice roll: ')
   print ciphertext
   r.sendline(ciphertext)
   print r.recvuntil('My key: ')
   key = r.recvuntil('==\n').strip()
   print key
   print r.recvuntil('Your key: ')
   if decrypt(diceroll, key)[:2] == '\x00\x01':
      r.sendline(six)
   if decrypt(diceroll, key)[:2] == '\x00\x02':
      r.sendline(five)
   if decrypt(diceroll, key)[:2] == '\x00\x03':
      r.sendline(four)
   if decrypt(diceroll, key)[:2] == '\x00\x04':
      r.sendline(three)
   if decrypt(diceroll, key)[:2] == '\x00\x05':
      r.sendline(two)
   if decrypt(diceroll, key)[:2] == '\x00\x06':
      r.sendline(one)
   print r.recvline()