w2.py

from Crypto.Cipher import AES
from Crypto.Util import Counter


def decrp():
    key = '36f18357be4dbd77f050515c73fcf9f2'.decode('hex')
    message = '69dda8455c7dd4254bf353b773304eec0ec7702330098ce7f7520d1cbbb20fc388d1b0adb5054dbd7370849dbf0b88d393f252e764f1f5f7ad97ef79d59ce29f5f51eeca32eabedd9afa9329'
    iv = message[:32]
    iv = int(iv, 16)
    ctr = Counter.new(nbits=128, initial_value=iv)
    cipher = AES.new(key, AES.MODE_CTR, counter=ctr)
    print cipher.decrypt(message.decode('hex')[16:])