binarly-io/fwhunt-scanTools for analyzing UEFI firmware and checking UEFI modules with FwHunt rules
Tools for analyzing UEFI firmware and checking UEFI modules with FwHunt rules.
rizin (v0.6.2)
Install with pip (tested on python3.6 and above):
$ python -m pip install fwhunt-scan
Install manually:
$ git clone https://github.com/binarly-io/fwhunt-scan.git && cd fwhunt-scan
$ python setup.py install
Analyze/scan separate module:
$ python3 fwhunt_scan_analyzer.py analyze-module {image_path} -o out.json
$ python3 fwhunt_scan_analyzer.py scan-module --rule {rule_path} {image_path}
Scan the entire firmware image:
$ python3 fwhunt_scan_analyzer.py scan-firmware -r rules/BRLY-2021-001.yml -r rules/BRLY-2021-004.yml -r rules/RsbStuffingCheck.yml test/fw.bin
To avoid installing dependencies, you can use the docker image.
You can build a docker image locally as follows:
docker build -t fwhunt_scan .
Or pull the latest image from ghcr.
Example of use:
docker run --rm -it -v {module_path}:/tmp/image:ro \
fwhunt_scan analyze-module /tmp/image # to analyze EFI module
docker run --rm -it -v {module_path}:/tmp/image:ro -v {rule_path}:/tmp/rule.yml:ro \
fwhunt_scan scan-module /tmp/image -r /tmp/rule.yml # to scan EFI module with specified FwHunt rule
docker run --rm -it -v {module_path}:/tmp/image:ro -v {rule_path}:/tmp/rule.yml:ro \
fwhunt_scan scan-firmware /tmp/image -r /tmp/rule.yml # to scan firmware image with specified FwHunt rule
docker run --rm -it -v {module_path}:/tmp/image:ro -v {rules_directory}:/tmp/rules:ro \
fwhunt_scan scan-firmware /tmp/image --rules_dir /tmp/rules # to scan firmware image with specified rules directory
All these steps are automated in the fwhunt_scan_docker.py script:
python3 fwhunt_scan_docker.py analyze-module {module_path} # to analyze EFI module
python3 fwhunt_scan_docker.py scan-module -r {rule_path} {module_path} # to scan EFI module with specified FwHunt rule
python3 fwhunt_scan_docker.py scan-firmware -r {rule_path} {firmware_path} # to scan firmware image with specified FwHunt rule
python3 fwhunt_scan_docker.py scan-firmware --rules_dir {rules_directory} {firmware_path} # to scan firmware image with specified rules directory
Basic usage examples:
from fwhunt_scan import UefiAnalyzer
...
uefi_analyzer = UefiAnalyzer(image_path=module_path)
print(uefi_analyzer.get_summary())
uefi_analyzer.close()
from fwhunt_scan import UefiAnalyzer
...
with UefiAnalyzer(image_path=module_path) as uefi_analyzer:
print(uefi_analyzer.get_summary())
On Linux platforms, you can pass blob for analysis instead of file:
from fwhunt_scan import UefiAnalyzer
...
with UefiAnalyzer(blob=data) as uefi_analyzer:
print(uefi_analyzer.get_summary())
from fwhunt_scan import UefiAnalyzer, UefiRule, UefiScanner
...
uefi_analyzer = UefiAnalyzer(module_path)
# rule1 and rule2 - contents of the rules on YAML format
uefi_rules = [UefiRule(rule1), UefiRule(rule2)]
scanner = UefiScanner(uefi_analyzer, uefi_rules)
result = scanner.result