UEFI_RETool : A Tool For UEFI Firmware Reverse Engineering

UEFI_RETool is a tool for UEFI firmware reverse engineering.

UEFI firmware analysis with uefi_retool.py script

Usage

  • Copy ida_plugin/uefi_analyser.py script and ida_plugin/uefi_analyser directory to IDA plugins directory
  • Edit config.json file
    • PE_DIR is a directory that contains all executable images from the UEFI firmware
    • DUMP_DIR is a directory that contains all components from the firmware filesystem
    • LOGS_DIR is a directory for logs
    • IDA_PATH and IDA64_PATH are paths to IDA Pro executable files
  • Run pip install -r requirements.txt
  • Run python uefi_retool.py command to display the help message

Commands

python uefi_retool.py

Usage: uefi_retool.py [OPTIONS] COMMAND [ARGS]…

Options:
–help Show this message and exit.

Commands:
get-images Get executable images from UEFI firmware.
get-info Analyze the entire UEFI firmware.
get-pp Get a list of proprietary protocols in the UEFI firmware.

Get-Images

python uefi_retool.py get-images –help

Usage: uefi_retool.py get-images [OPTIONS] FIRMWARE_PATH
Get executable images from UEFI firmware. Images are stored in “modules”
directory.

Options:
–help Show this message and exit.

Example

python uefi_retool.py get-images test_fw/fw-tp-x1-carbon-5th.bin

Get-Info

python uefi_retool.py get-info –help

Usage: uefi_retool.py get-info [OPTIONS] FIRMWARE_PATH
Analyze the entire UEFI firmware. The analysis result is saved to .json
file.

Options:
-w, –workers INTEGER Number of workers (8 by default).
–help Show this message and exit.

Example:

python uefi_retool.py get-info -w 6 test_fw/fw-tp-x1-carbon-5th.bin

Get-PP

python uefi_retool.py get-pp –help

Usage: uefi_retool.py get-pp [OPTIONS] FIRMWARE_PATH
Get a list of proprietary protocols in the UEFI firmware. The result is
saved to .json file.

Options:
-w, –workers INTEGER Number of workers (8 by default).
–help Show this message and exit.

Example:

python uefi_retool.py get-pp -w 6 test_fw/fw-tp-x1-carbon-5th.bin

Additional Tools

  • tools/update_edk2_guids.py is a script that updates protocol GUIDs list from edk2 project

IDA plugin

IDA plugin for UEFI analysis

Analyser & Protocol explorer

Usage

  • Copy uefi_analyser and uefi_analyser.py to your %IDA_DIR%/plugins directory
  • Open the executable UEFI image in IDA and go to Edit -> Plugins -> UEFI analyser (alternatively, you can use the key combination Ctrl+Alt+U)

Example

  • Before analysis
  • After analysis
  • Protocol explorer window

Dependency Browser & Dependency Graph

Usage

  • Analyse the firmware using uefi_retool.py python uefi_retool.py get-info FIRMWARE_PATH
  • Load <LOGS_DIR>/<FIRMWARE_NAME>-all-info.json file to IDA (File -> UEFI_RETool...)
  • alternatively, you can use the key combination Ctrl+Alt+J)

Example

  • Dependency browser window
  • Dependency graph
R K

Recent Posts

Log Analysis Fundamentals

Introduction In cybersecurity and IT operations, logging fundamentals form the backbone of monitoring, forensics, and…

7 hours ago

Networking Devices 101: Understanding Routers, Switches, Hubs, and More

What is Networking? Networking brings together devices like computers, servers, routers, and switches so they…

20 hours ago

Sock Puppets in OSINT: How to Build and Use Research Accounts

Introduction In the world of Open Source Intelligence (OSINT), anonymity and operational security (OPSEC) are…

21 hours ago

What is SIEM? Complete Guide to Security Information and Event Management

Introduction As cyber threats grow more sophisticated, organizations need more than just firewalls and antivirus…

1 day ago

Website OSINT: Tools and Techniques for Reconnaissance

Introduction When it comes to cybersecurity and ethical hacking, one of the most effective ways…

2 days ago

Top OSINT Tools to Find Emails, Usernames and Passwords

Introduction In the world of cybersecurity, knowledge is power. One of the most powerful skillsets…

2 days ago