I am trying to extract the squashfs filesystem of my router. Here is firmware.
First, I unzipped the file. Next, I ran binwalk to get some information about the file.
DECIMAL HEX DESCRIPTION
-------------------------------------------------------------------------------------------------------
58 0x3A TRX firmware header, little endian, header size: 28 bytes, image size: 6656000 bytes, CRC32: 0x2B1713B2 flags/version: 0x10000
86 0x56 LZMA compressed data, properties: 0x5D, dictionary size: 65536 bytes, uncompressed size: 3614368 bytes
1282426 0x13917A Squashfs filesystem, little endian, non-standard signature, version 3.0, size: 5367357 bytes, 853 inodes, blocksize: 65536 bytes, created: Wed Aug 7 05:08:47 2013
I then ran binwalk -e to extract the contents of the file. I got three files:
.
├── 13917A.squashfs
├── 56
└── 56.7z
Running unsquashfs on 13917A.squashfs failed, saying it was unable to find the magic block. This was because the file was using a non standard magic. Changing the magic to a standard one made unsquashfs and file detect it as a squashfs file system. But unsquashfs did not complete successfully:
caff@UbunutuX2:~/Netgear/test$ unsquashfs 13917A.squashfs
Reading a different endian SQUASHFS filesystem on 13917A.squashfs
Filesystem on 13917A.squashfs is (768:0), which is a later filesystem version than I support!
I also tried extracting the file system by using Jeremy Collake’s Firmware Mod Kit. This failed also:
caff@UbunutuX2:~/Netgear/test$ /opt/firmware-mod-kit/trunk/unsquashfs_all.sh 13917A.squashfs
Attempting to extract SquashFS .X file system...
Trying ./src/others/squashfs-3.4-nb4/unsquashfs-lzma... Skipping others/squashfs-hg55x-bin (wrong version)...
File extraction failed!
How do I extract this squashfs file system?
