feat: Add IDA pdb generator script (#221)

This is something I've been using for reverse engineering; basically,
the script takes in a PDB file (preferrably the test PDB) and removes
the `RE` and `SFSE` namespace from everything, then outputs a new PDB.
This makes it a lot easier to sync types with IDA (especially since if
you've been using the mangled names from the Fallout 4 DB for
everything)

scripts/IDAPDB.py

@@ -0,0 +1,57 @@
+import os
+import re
+import sys
+
+# takes in a path to the PDB file and a path to the IDA-ready PDB file
+
+# What we do here is we call llvm-pdbutil to dump the PDB file into a YAML file.
+# We then take the PDB file in as one line, Search and replace all the `\bRE::` with "" and then
+# search and replace all the mangled RE namespace names (i.e. "@RE@@") with "@@".
+# Then we output it to another yaml and then call llvm-pdbutil again to convert it back to a PDB file.
+
+# llvm-pdbutil is in the path if vcvarsall.bat is run (and clang is installed)
+# otherwise, you can set the path to llvm-pdbutil.exe in the environment variable PDBUTIL_PATH
+# i.e. set PDBUTIL_PATH=C:\Program Files\LLVM\bin\llvm-pdbutil.exe
+PDBUTIL_PATH = os.environ.get("PDBUTIL_PATH", "llvm-pdbutil.exe")
+
+# NOTE: this can fail if the executing shell is UTF-16 (i.e. old PowerShell)
+# Python uses cmd.exe by default, so it should be fine
+def convert_pdb_to_yaml(pdb_file, yaml_file):
+   print("using " + PDBUTIL_PATH)
+   if os.system(PDBUTIL_PATH + " pdb2yaml --all %s > %s" % (pdb_file, yaml_file)):
+            raise Exception("Failed to convert pdb to yaml")
+
+def convert_yaml_to_pdb(yaml_file, pdb_file):
+   if os.system(PDBUTIL_PATH + ' yaml2pdb --pdb="%s" %s ' % (pdb_file, yaml_file)):
+         raise Exception("Failed to convert yaml to pdb")
+
+def manip(pdb_file, new_pdb_file):
+    # get the dir of the pdb file
+    pdb_dir = os.path.dirname(pdb_file)
+    yaml_file = os.path.join(pdb_dir, "temp.yaml")
+    convert_pdb_to_yaml(pdb_file, yaml_file)
+    with open(yaml_file, "r") as f:
+        data = f.read()
+        data = re.sub(r"\bRE::DirectInput8::", "", data)
+        data = re.sub(r"\bRE::DirectX::", "", data)
+        data = re.sub(r"\bSFSE::WinAPI::", "", data)
+        data = re.sub(r"\bSFSE::stl::", "stl::", data)
+        data = re.sub(r"\bRE::", "", data)
+        # get the mangled names too
+        data = re.sub("@DirectInput8@RE@@", "@@", data)
+        data = re.sub("@DirectX@RE@@", "@@", data)
+        data = re.sub("@WinAPI@SFSE@@", "@@", data)
+        data = re.sub("@stl@SFSE@@", "@stl@@", data)
+        data = re.sub("@RE@@", "@@", data)
+    with open(yaml_file, "w") as f:
+        f.write(data)
+    convert_yaml_to_pdb(yaml_file, new_pdb_file)
+    #remove the temp
+    # os.remove(yaml_file)
+
+def main(argc, argv):
+    manip(argv[1], argv[2])
+
+if __name__ == "__main__":
+    # pass in argc, argv
+    main(len(sys.argv), sys.argv)