Binwalk
Finds and extracts files hidden inside other files, mainly for analyzing firmware.
- Stars
- 14.6k
- Forks
- 1.9k
- Licence
- MIT
- Language
- Rust
- Last update
- 3 months ago
- Type
- CLI
What it is
Binwalk scans a file, such as a firmware image from a router or device, and identifies other files and data embedded inside it. It can optionally extract those pieces. It also offers entropy analysis, which helps spot compressed or encrypted sections. The README says its main focus is firmware analysis, though it supports many file types.
- Run binwalk on a firmware file to list the embedded file types it finds
- Extract identified embedded files from a firmware image with the optional extraction flag
- Generate entropy graphs to see whether parts of a file look compressed or encrypted
- Use the Rust library to build custom analysis into your own Rust project
Great for
- Security researchers examining device firmware images
- Reverse engineers looking for embedded file systems or compressed sections
- Developers who want to script firmware analysis in Rust
- People who need to identify unknown compression or encryption via entropy graphs
Not ideal for
- Casual users who just want a general file converter; it is a command-line analysis tool
- People without basic command-line experience, since usage is run from a terminal
- Users who need a graphical interface; the README shows only command-line usage
How to get it
- 1
Run with Docker
You'll need: Docker (recommended by the README) or the Rust package manager (Cargo)
Clone the repository
git clone https://github.com/ReFirmLabs/binwalk - 2
Run it
- Install Binwalk using Docker, Cargo, or by compiling from source, following the linked wiki guides
- Run `binwalk --help` to see available options
- Run `binwalk <file>` on a firmware or binary file to identify embedded data
- Add extraction or entropy options as needed, per the wiki
- 3
Get the most out of it
- Use entropy analysis to identify unknown compression or encryption
- Check the wiki's supported signatures list to understand what file types are detected
- Integrate it into Rust projects using the library documentation in the wiki
Downloads
Strengths
- Rewritten in Rust, which the README says is for speed and accuracy
- Supports a wide variety of file and data types, per the project's signature list
- Usable as a command-line tool and as a Rust library
Trade-offs
- README is truncated and does not detail limitations, so trade-offs are not fully clear
- Latest release v3.1.0 has no prebuilt binaries, so installation requires Docker, Cargo, or building from source
- Primarily focused on firmware, so it may be less suited to other file analysis tasks
Stats synced from GitHub. The assessment above was drafted with AI from the project's README on 2026-10-29 and may miss recent changes — check the README before relying on a command. MIT licence: free to use, modify and distribute, including commercially, as long as you keep the copyright notice.