SquashFS is a widely used file system in embedded Linux devices; in fact, it is probably one of the most commonly used file systems among Linux based consumer products. While many devices use standard SquashFS file systems that can be extracted using the unsquashfs tools provided in the firmware mod… Continue reading
Just cut a new release of binwalk, now with Mac OSX support! In addition to bug fixes and new magic signatures, binwalk no longer relies on the libmagic library; instead, it builds against the file utility’s source code. This removes additional dependencies for the end user, helps to resolve potential… Continue reading
The ability to analyze a firmware image and extract data from it is extremely useful. It can allow you to analyze an embedded device for bugs, vulnerabilities, or GPL violations without ever having access to the device. In this tutorial, we’ll be examining the firmware update file for the Linksys… Continue reading
Binwalk v0.3.6 has just been released and includes improved signatures and user requested feature additions: Improved (again!) LZMA matching and false positive identification Ability to specify multiple target files on the command line By default all gzip and lzma signatures are enabled, and all matches marked as invalid are excluded… Continue reading
Version 0.3.4 of binwalk has just been released. New and improved signatures have been added to the magic file, and more importantly, an update feature has been built in that lets you update your magic file definitions to the latest SVN check in. To update your magic signatures, just run:… Continue reading
Last week Jim posted a comment asking about reverse engineering the firmware for some Chinese routers with the intention of extracting the Web files and translating them to English. Although I usually work with Linux based firmware, this sounded interesting so I thought I’d investigate. Although I wasn’t able to… Continue reading
Customizing firmware images can be a very useful skill, allowing you to add or unlock features, fix bugs, and patch vulnerabilities when vendors can’t (or won’t) do so in a timely manner. A while ago I found that my Trendnet TEW-632BRP and TEW-652BRP routers had a TFTP service running on… Continue reading
Binwalk v.0.3.1 just released, fixed several bugs and added some new signatures. Grab it here!
While the recent v0.2.1 release was a bug fix release, v0.3.0 has added some important new features: Include and exclude filters now match search terms on anything in the resulting output rather than just matching the first line description from the magic file. Signatures that are two bytes or less… Continue reading
The ability to analyze a firmware image and extract data from it is extremely useful. It can allow you to analyze an embedded device for bugs, vulnerabilities, or GPL violations without ever having access to the device. In this tutorial, we’ll be examining the firmware update file for the Linksys… Continue reading