From 09559a6dfa522a310f04fc009ef25bb827693913 Mon Sep 17 00:00:00 2001
From: Nguyen Tan Cong <shenlongbk@gmail.com>
Date: Wed, 6 May 2015 07:53:04 +0700
Subject: [PATCH] add script to MajorOperatingSystemVersion and
 MajorSubsystemVersion in PE header from 6 to 5

---
 suite/patch_major_os_version.py | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100755 suite/patch_major_os_version.py

diff --git a/suite/patch_major_os_version.py b/suite/patch_major_os_version.py
new file mode 100755
index 00000000..c75ab41c
--- /dev/null
+++ b/suite/patch_major_os_version.py
@@ -0,0 +1,25 @@
+#!/usr/bin/env python
+# By Nguyen Anh Quynh
+
+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)