mirror of
https://github.com/isledecomp/isle.git
synced 2024-12-26 16:02:33 -05:00
68 lines
1.9 KiB
Python
68 lines
1.9 KiB
Python
|
#!/usr/bin/env python
|
||
|
|
|
||
|
|
import argparse
|
||
|
|
import hashlib
|
||
|
|
import pathlib
|
||
|
|
import shutil
|
||
|
|
|
||
|
|
ORIGINAL_C2_MD5 = "dcd69f1dd28b02dd03dd7ed02984299a" # original C2.EXE
|
||
|
|
|
||
|
|
C2_MD5 = (
|
||
|
|
ORIGINAL_C2_MD5,
|
||
|
|
"e70acde41802ddec06c4263bb357ac30", # patched C2.EXE
|
||
|
|
)
|
||
|
|
|
||
|
|
C2_SIZE = 549888
|
||
|
|
|
||
|
|
|
||
|
|
def main():
|
||
|
|
parser = argparse.ArgumentParser(
|
||
|
|
allow_abbrev=False,
|
||
|
|
description="Path to C2.EXE of Microsoft Visual Studio 4.2.0 to disable C4786 warning",
|
||
|
|
)
|
||
|
|
parser.add_argument("path", type=pathlib.Path, help="Path of C2.EXE")
|
||
|
|
parser.add_argument(
|
||
|
|
"-f", dest="force", default=False, action="store_true", help="force"
|
||
|
|
)
|
||
|
|
args = parser.parse_args()
|
||
|
|
|
||
|
|
if not args.path.is_file():
|
||
|
|
parser.error("Input is not a file")
|
||
|
|
|
||
|
|
binary = bytearray(args.path.open("rb").read())
|
||
|
|
md5 = hashlib.md5(binary).hexdigest()
|
||
|
|
print(md5, C2_MD5)
|
||
|
|
|
||
|
|
msg_cb = parser.error if not args.force else print
|
||
|
|
if len(binary) != C2_SIZE:
|
||
|
|
msg_cb("file size is not correct")
|
||
|
|
if md5 not in C2_MD5:
|
||
|
|
msg_cb("md5 checksum does not match")
|
||
|
|
|
||
|
|
if md5 == ORIGINAL_C2_MD5:
|
||
|
|
backup = f"{args.path}.BAK"
|
||
|
|
print(f'Creating backup "{backup}"')
|
||
|
|
shutil.copyfile(args.path, backup)
|
||
|
|
|
||
|
|
def nop_patch(start, count, expected=None):
|
||
|
|
replacement = [0x90] * count
|
||
|
|
if expected:
|
||
|
|
current = list(binary[start : start + count])
|
||
|
|
assert len(expected) == count
|
||
|
|
assert current in (expected, replacement)
|
||
|
|
print(f"Nopping {count} bytes at 0x{start:08x}")
|
||
|
|
binary[start : start + count] = replacement
|
||
|
|
|
||
|
|
print(
|
||
|
|
"Disable C4786 warning: '%Fs' : identifier was truncated to '%d' characters in the debug information"
|
||
|
|
)
|
||
|
|
nop_patch(0x52F07, 5, [0xE8, 0x4F, 0xB3, 0xFE, 0xFF]) # 0x00453b07
|
||
|
|
nop_patch(0x74832, 5, [0xE8, 0x24, 0x9A, 0xFC, 0xFF]) # 0x00475432
|
||
|
|
|
||
|
|
args.path.open("wb").write(binary)
|
||
|
|
print("done")
|
||
|
|
|
||
|
|
|
||
|
|
if __name__ == "__main__":
|
||
|
|
raise SystemExit(main())
|