Ripcord patches

ripcord_patch.py

# -*- coding: utf-8 -*-

# patches ripcord so that you may send messages in rate limited channels
# and see deleted messages
# blah blah blah use at your own risk
import codecs
import sys

filename_in = "Ripcord.exe"
filename_out = "RipcordPatched.exe"
patches = {
    "DELETED_MESSAGE_PATCH_1": ("4883F8FF742C488B", "4883F8FFEB2C488B"),
    "DELETED_MESSAGE_PATCH_2": ("418D5607488D", "418D5608488D"),
    "DELETED_MESSAGE_PATCH_3": ("00488D4C2448E940", "00488D4C2448EB03"),
    "DELETED_MESSAGE_PATCH_4": ("5B64656C657465645D0000", "5B64656C657465645D2000"),
    "COOLDOWN_PATCH": ("84C00F94C184C9", "9090B1009084C9")
}


def patch(filename):
    if not filename.replace("\"", "").endswith(filename_in):
        print("WARNING |", filename, "does not match ", filename_in, "!")
    with open(filename, 'rb') as infile:
        byteContent = bytearray(infile.read())

    for key, patchSig in patches.items():
        try:
            beforeBytes = codecs.decode(patchSig[0], 'hex_codec')
            if not beforeBytes in byteContent:
                print("ERROR | Could not find pattern for patch", key, "! (Wrong version or architecture?)")
                continue
            afterBytes = codecs.decode(patchSig[1], 'hex_codec')
            byteContent = byteContent.replace(beforeBytes, afterBytes)
            print("SUCCESS | Patched {}!".format(key))
        except Exception as ex:
            print("ERROR | Failed to patch ", key, "! (", ex, ")")

    with open(filename_out, 'wb') as outfile:
        outfile.write(byteContent)


if __name__ == "__main__":
    patch(sys.argv[1])