Binwalk dd gzip
I need to do some more work to figure out how to map the offsets above to the data section. Some more greps that are useful:. It fails, likely my offsets are off, but you get the picture. Squashfs and Cramfs are much easier to extract, and the steps are the same, Happy Hunting! Huge thanks to the author of binwalk and owner of http: He wrote in with some awesome helpful tips for pulling apart the DIR firmware:. So the JFFS2 signatures that you were seeing were just false positive matches.
What sticks out to me though is the gzip match in the gzipped data extracted from the firmware image:. The gzip match has a timestamp that is within one minute of the original gzipped file found in the firmware update image at offset 0x40, so that's a good sign. So basically the file system was built as a compressed CPIO archive, then concatenated with the kernel, then the whole thing was gzipped. Be sure to check out his web site and training!
Now we should go back to image Well straight away trying to decompress image So we can assume that was a incorrectly detected by binwalk. Lets now try and decompress image So that does indeed produce a large image-2 file, so we can ignore the trailing garbage warning. This turns up a set of false positives. So I take a different approach.
This produces a whole host of valid looking strings. A line like this:. Hopefully this will lead to me getting ssh access to the router, and eventually being able to customise the firmware. Toggle navigation Andrew Brampton. Hacking Linksys Ev2 firmware ev2 firmware linksys Linux In a previous post I obtained the Linksys Ev2 firmware , now I plan to break it apart and see what I can find. Thu Dec 22