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I updated my oledump.py tool to help with the analysis of files that embed OLE files, like AutoCAD's .dwg files with VBA macros. A .dwg file is not an OLE file, and you get a warning when you try to analyze it with oledump:
I added a new option to oledump: -f (--find). You use this option to find and select embedded OLE files inside any file. A .dwg file with embedded VBA macros contains an OLE file. You can now search for embedded OLE files using option "-f l" (letter l, for list), like this:
From this output, we can tell that the .dwg file contains an OLE file at position 0x8090. We can select this embedded file for analysis using option "-f 1" (number 1), like this:
And then you can just use familiar options, like -s -v, to analyze the macros. I also produced a video on .dwg files with embedded VBA macros:
Didier Stevens |
DidierStevens 430 Posts ISC Handler |
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Dec 22nd 2019 3 months ago |
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