from Crypto.Cipher import AES

import os

BLOCKSIZE = 16

flag = os.environ['FLAG']

def pad(data):

        pad_len = BLOCKSIZE - (len(data) % BLOCKSIZE) if  len(data) % BLOCKSIZE != 0 else 0

        return data + chr(pad_len) * pad_len

def unpad(data):

        num = ord(data[-1])

        return data[:-num]

def enc(data,key):

	cipher = AES.new(key,AES.MODE_ECB)

	encrypt = cipher.encrypt(pad(data))

	return encrypt

def dec(data,key):

	try:

		cipher = AES.new(key,AES.MODE_ECB)

		encrypt = cipher.decrypt(data)

		return unpad(encrypt)

	except:

		exit()

def task():

        try:

                key = os.urandom(16)

                while True:

                        plaintext = raw_input("Amazing function: ").decode('hex')

                        yusa = plaintext+flag

                        print enc(yusa,key).encode('hex')

        except Exception as e:

                print str(e)

                exit()

if __name__ == "__main__":

        task()

import binascii

from Crypto.Cipher import AES

from pwn import *

re=remote("1.14.71.254",28754)

ta=''

for j in range(48):

    re.recvuntil(b'Amazing function: ')

    a=binascii.hexlify(b'0'*(47-j))

    re.sendline(a)

    h=re.recvline().decode().strip()

    for i in range(256):

        a = binascii.hexlify(b'0'*(47-j)+ta.encode()+chr(i).encode())

        re.recvuntil(b'Amazing function: ')

        re.sendline(a)

        x = re.recvline().decode().strip()

        if(x[64:96]==h[64:96]):

            ta+=chr(i)

            print(ta)

            break

re.interactive()