lab6

import json
import requests
from Crypto.Cipher import AES

BLOCK_SIZE = 16

def get(url):
    return requests.get(url, headers={'Content-Type': 'application/json', 'charset': 'utf-8'})

def post(url, text):
    return requests.post(url, data = json.dumps(text), headers = {'Content-Type': 'application/json', 'charset':'utf-8'})

def xor(a, b):
    return bytes([x ^ x1 for x, x1 in zip(bytes.fromhex(a), bytes.fromhex(b))])

from base64 import b64encode, b64decode


MIN_VALUE = 10**3
MAX_VALUE = 10**5
CHALLENGES_ID = 21
URL = 'http://192.168.56.103/api/IvIsTime/Chumak/'

cpin = get(URL + str(1) + "/encryptedpin")

for chal in range(1, CHALLENGES_ID):
    valide = get(URL + str(chal) + "/validate")


    print('Validation pin: ', b64decode(valide.text))

    for numpin in range(MIN_VALUE, MAX_VALUE, 1):
        pin = str(b64encode(bytes(str(numpin), 'utf-8')))[2:-1]

        if numpin%100 == 0:
            cpin = get(URL + str(chal) + "/encryptedpin")

        encpin = post(URL + str(chal) + "/noentropy", pin)

        if cpin.text == encpin.text:
            print('Encryption pin: ', numpin)
            break
        pass