[DEFCON_23_Quals-misc-patcher-3pts]

patcher.py

#!/usr/bin/env python2

import binascii
import re
import struct
import sys

uh = lambda x: binascii.unhexlify(x)
hx = lambda x: binascii.hexlify(x)
p = lambda x: struct.pack("<I", x)
u = lambda x: struct.unpack("<I", x)

data = ""
with open("./cybergrandsandbox_e722a7ec2ad46b9fb8472db37cb95713", "rb") as f:
    data = f.read()

hexstr = hx(data)
hexstr = hexstr.replace(hx(p(0x1388)), hx(p(0x1388+(0x2000*100))))
hexstr = hexstr.replace(hx(p(0x138c)), hx(p(0x138c+(0x2000*100))))
hexstr = hexstr.replace(hx(p(0x1390)), hx(p(0x1390+(0x2000*100))))
hexstr = hexstr.replace(hx(p(0x1394)), hx(p(0x1394+(0x2000*100))))

with open("./patched", "wb") as f:
    f.write(uh(hexstr))

I know this is a bonus problem.