AI Summary: OFRAK (Open Firmware Reverse Analysis Konsole) is a comprehensive binary analysis and modification platform designed specifically for embedded firmware and various binary formats. Its notable features include an interactive GUI for detailed exploration, a Python API for scripting reusable analyses, recursive unpacking and repacking capabilities, and integration with advanced reverse engineering tools such as angr and Ghidra, allowing users to effectively identify, analyze, and modify complex firmware.

README

OFRAK

OFRAK (Open Firmware Reverse Analysis Konsole) is a binary analysis and modification platform. OFRAK combines the ability to:

• Identify and Unpack many binary formats
• Analyze unpacked binaries with field-tested reverse engineering tools
• Modify and Repack binaries with powerful patching strategies

OFRAK supports a range of embedded firmware file formats beyond userspace executables, including:

• Compressed filesystems
• Compressed & checksummed firmware
• Bootloaders
• RTOS/OS kernels

OFRAK equips users with:

• A Graphical User Interface (GUI) for interactive exploration and visualization of binaries
• A Python API for readable and reproducible scripts that can be applied to entire classes of binaries, rather than just one specific binary
• Recursive identification, unpacking, and repacking of many file formats, from ELF executables, to filesystem archives, to compressed and checksummed firmware formats
• Built-in, extensible integration with powerful analysis backends (angr, Binary Ninja, Ghidra, IDA Pro)
• Extensibility by design via a common interface to easily write additional OFRAK components and add support for a new file format or binary patching operation

See ofrak.com for more details.

GUI Frontend

The web-based GUI view provides a navigable resource tree. For the selected resource, it also provides: metadata, hex or text navigation, and a mini map sidebar for quickly navigating by entropy, byteclass, or magnitude. The GUI also allows for actions normally available through the Python API like commenting, unpacking, analyzing, modifying and packing resources.

Getting Started

Installation Methods

OFRAK can be installed in three ways:

See (Install) for detailed installation instructions.

Note that OFRAK uses Git LFS – see Installing from Source for more details.

Documentation

OFRAK has general documentation and API documentation. Both can be viewed at ofrak.com/docs.

If you wish to make changes to the documentation or serve it yourself, follow the directions in docs/README.md.

License

The code in this repository comes with an OFRAK Community License, which is intended for educational uses, personal development, or just having fun. If the community license is right for you, run ofrak license --community --i-agree to accept it!

Users interested in OFRAK for commercial purposes can request the Pro or Enterprise License. See OFRAK Licensing for more information.

Contributing

Red Balloon Security is excited for security researchers and developers to contribute to this repository.

For details, please see our contributor guide and the Python development guide.

Support

Please contact ofrak@redballoonsecurity.com, or write to us on the OFRAK Slack with any questions or issues regarding OFRAK. We look forward to getting your feedback! Sign up for the OFRAK Mailing List to receive monthly updates about OFRAK code improvements and new features.

This material is based in part upon work supported by the DARPA under Contract No. N66001-20-C-4032. Any opinions, findings and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the DARPA. Distribution Statement “A” (Approved for Public Release, Distribution Unlimited).