minhtt159

# Took from SO
def egcd(a, b):
    if a == 0:
        return (b, 0, 1)
    g, y, x = egcd(b%a,a)
    return (g, x - (b//a) * y, y)

def modinv(a, m):
    g, x, y = egcd(a, m)
    if g != 1:

minhtt159

enc_flag = '1d14273b1c27274b1f10273b05380c295f5f0b03015e301b1b5a293d063c62333e383a20213439162e0037243a72731c22311c2d261727172d5c050b131c433113706b6047556b6b6b6b5f72045c371727173c2b1602503c3c0d3702241f6a78247b253d7a393f143e3224321b1d14090c03185e437a7a607b52566c6c5b6c034047'.decode('hex')
# print len(enc_flag)

key = [i for i in range(10)]
flag = [chr(i) for i in range(len(enc_flag))]

m = []
for a in range(len(key)):
    i = a
    for b in range(len(flag)/len(key)):

minhtt159

import os
import socket
import threading
from hashlib import *
import SocketServer
import random
from flag import flag
host, port = '0.0.0.0', 33337
BUFF_SIZE = 1024

minhtt159

import random
from gmpy2 import *
from message import mes
from secret import m,n,c

assert "ISITDTU" in mes

s = []
for i in mes:
    x = (m* ord(i) + c) % n

minhtt159

from hashlib import md5
from base64 import b64decode
from base64 import b64encode
from Crypto.Cipher import AES
from time import ctime
from Secret import __SECRET__
import os

BLOCK_SIZE = 16

minhtt159

from random import randint
from sys import argv, stdout

from fastecdsa.curve import P256
from fastecdsa.point import Point
from mathutil import p256_mod_sqrt, mod_inv
def gen_point():
    P = P256.G  
    d = randint(2, P256.q)  
    e = mod_inv(d, P256.q)  

minhtt159

from pwn import *
import sys, os

def strxor(a,b):
    return ''.join([chr(ord(x)^ord(y)) for (x,y) in zip(a,b)])

records = '''I do nothing.
I'm a chat bot.
I'm from Vietnam.
My name is ChatBot.

minhtt159

#!/usr/bin/env python2

from gmpy2 import powmod, is_prime
from flag import FLAG
import sys
from hashlib import sha256
from os import urandom
import sys

def write_to_file(num):

minhtt159

#!/usr/bin/env python3
import sys, hashlib

def decrypt_password(user, pass_enc):
    key = hashlib.md5(user + b"283i4jfkai3389").digest()

    passw = ""
    for i in range(0, len(pass_enc)):
        passw += chr(pass_enc[i] ^ key[i % len(key)])
    

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function name:  (null)
number of ops:  39
compiled vars:  !0 = $flag, !1 = $_box, !2 = $magic
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   3     0  E >   ASSIGN                                                   !0, 'FLAG+HERE'
   5     1        NOP                                                      
  13     2        NOP                                                      
  21     3        NOP                                                      
  33     4        NOP