| #!/usr/bin/env python |
| # By Daniel Pistelli & Nguyen Tan Cong |
| |
| # This script is to patch DLL/EXE MajorVersion to 5, |
| # so they can be loaded by Windows XP. |
| # This is the problem introduced by compiling on Windows 7, using VS2013. |
| |
| import sys, struct |
| |
| if len(sys.argv) < 2: |
| print("Usage: %s <pe_file_path>" % sys.argv[0]) |
| sys.exit(0) |
| |
| pe_file_path = sys.argv[1] |
| |
| with open(pe_file_path, "rb") as f: |
| b = f.read() |
| |
| if not b.startswith("MZ"): |
| print("Not a PE file") |
| sys.exit(0) |
| |
| e_lfanew = struct.unpack_from("<I", b, 0x3C)[0] |
| vb = struct.pack("<HHHHH", 5, 0, 0, 0, 5) # encode versions |
| # patches MajorOperatingSystemVersion and MajorSubsystemVersion |
| b = b[0:e_lfanew + 0x40] + vb + b[e_lfanew + 0x4A:] |
| # write back to file |
| with open(pe_file_path, "wb") as f: |
| f.write(b) |
