https://github.com/google/pawn

Extract BIOS firmware from Intel-based workstations and laptops
https://github.com/google/pawn

bios c-plus-plus firmware firmware-tools uefi

Last synced: about 2 months ago
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Extract BIOS firmware from Intel-based workstations and laptops

• Host: GitHub
• URL: https://github.com/google/pawn
• Owner: google
• License: apache-2.0
• Created: 2017-08-30T20:59:28.000Z (almost 7 years ago)
• Default Branch: main
• Last Pushed: 2023-04-10T00:36:22.000Z (about 1 year ago)
• Last Synced: 2024-01-31T10:16:21.665Z (5 months ago)
• Topics: bios, c-plus-plus, firmware, firmware-tools, uefi
• Language: C++
• Homepage:
• Size: 136 KB
• Stars: 297
• Watchers: 18
• Forks: 60
• Open Issues: 3
• Metadata Files:
  • Readme: README.md
  • Contributing: CONTRIBUTING.md
  • License: LICENSE

Lists

• awesome-firmware-security - Pawn - Google Pawn is a Linux-centric online firmware tool that dumps the platform firmware image to a file, for later offline analysis. (Tools / Open Source)

README

        
# Pawn BIOS Dumping Tool

Copyright 2014-2023 Google LLC.

[![Linux Build Status](https://github.com/google/pawn/workflows/linux-build/badge.svg)](https://github.com/google/pawn/actions?query=workflow%3Alinux-build)

Disclaimer: This is not an official Google product (experimental or otherwise),

it is just code that happens to be owned by Google.

## What is it?

Pawn is a tool to extract the BIOS firmware from Intel-based workstations and

laptops.

The name is a play on an internal tool that is also named after a chess piece.

## How to Build

Dependencies:

  * Linux on x86_64 (uses `/dev/mem`). FreeBSD might also work.

  * GCC >= 7 or Clang >= 7

  * CMake >= 3.14

  * Ninja or GNU Make

To build:

```bash

mkdir -p build && cmake -S . -B build

cmake --build build/

```

The resulting binary can be found in `build/pawn/pawn`.

## Usage

The following command will extract the BIOS firmware and save the image to

`bios_image.bin`:

```bash

sudo build/pawn/pawn bios_image.bin

```

Note: When running a Linux kernel > 4.8.4, make sure that either

`CONFIG_IO_DEVMEM=n` is set or that you've booted with the `iomem=relaxed`

boot option.

After extraction, you can then use other tools like

[UEFITool](https://github.com/LongSoft/UEFITool) to process the firmware

image further.