balwinder213213/vbiosfinder

Extract embedded VBIOS from (almost) any BIOS Update

VBiosFinder (linux)

This tool attempts to extract a VBIOS from a bios update
Laptops with NVIDIA Optimus graphics often have the dGPU VBIOS integrated in their system BIOS, this makes extracting the VBIOS a complicated process. Provided you have a BIOS Update for your laptop, this tool might be able to automagically extract all available VBIOS from it.

Dependencies

• Ruby
• bundler (a ruby gem)
• UEFIExtract (note: UEFIExtract can be found in the branch new_engine)
• rom-parser
• p7zip (optional)
• innoextract (optional)
• upx (optional)

Note

Some dependencies might not offer a package for your linux distribution (like UEFIDump and rom-parser). The binaries can be placed in ./3rdparty to avoid having to install them.

Usage

• Run bundle install --path=vendor/bundle to install the required ruby modules (once)
• Run ./vbiosfinder extract /path/to/bios_update.exe to attempt an extraction
• A temporary working dir is created at ./tmp-vbiosfinder which can be removed inbetween runs
• Extracted VBIOS roms will be placed in ./output

Compatibility (non-exhaustive)

• Lenovo y50-70 (bios update)
• Lenovo S5 2nd Gen (20JAA009HH) (bios update)
• TravelMate P645-SG
• ThinkPad T430
• note: if your device isn't listed here, feel free to try this tool and report your results!

Troubleshooting

Q: There are no files in ./output after running the tool!
A: It's very possible that VBiosFinder can't extract your type of BIOS update right now. Feel free to open an issue with a link to your bios update and the program output you get!

TODO

• Add option to extract the bios of the running system (can we?)
• Clean up temporary working dir after finishing up done
• Test with more BIOS updates

Licensing

This project, initially authored by Robin Broda, is licensed under the GNU Affero General Public License v3
A copy of the license is available in LICENSE.txt