CubeWorld Server Port Changer

cwportchanger.py

#!/usr/bin/python
'''
CubeWorld Server Port Changer
By DonRevan
Version 1.0
'''
import os

if not os.path.isfile("Server.exe"):
    raise Exception("Couldn't find server binary!")
    
if os.path.isfile("Server_MITM.exe"):
    raise Exception("Server_MITM.exe already exists, you have to remove it first.")

print 'Creating patched server binary..'
original = open('Server.exe', 'rb')
if original:
    custom = open('Server_MITM.exe', 'wb')
    edit = str(original.read())
    loc = edit.find('\x68\x39\x30\x00\x00')
    if not loc:
        raise Exception("Server_MITM.exe seems to be already modified.")
    custom.write(edit.replace('\x68\x39\x30\x00\x00', '\x68\x3A\x30\x00\x00', 1))
    custom.close()
original.close()
print 'Port has been changed!'