I am trying to extract the firmware for a Panasonic WV-S2131L ip camera. It comes as a .zip file that contains a .img file. I have tried many methods to try to analyze this file and I have found nothing of value.
Binwalk returned absolutely nothing
xxd at least gave me back the firmware version
xxd -a s1131_402ES.img | head 00000000: 342e 3032 4530 0000 302e 3030 0000 0000 4.02E0..0.00.... 00000010: 1314 0000 1314 0000 0004 0000 8000 b003 ................ 00000020: 1f06 0000 0000 0000 0000 0000 0000 0000 ................ 00000030: 0000 0000 0000 0000 0000 0000 0000 8000 ................ 00000040: 0000 0000 0000 0000 0000 8000 0000 2003 .............. . 00000050: 0000 0000 0000 0000 0000 a003 9601 0000 ................ 00000060: 0100 0000 0000 0000 0100 0000 0000 0000 ................ 00000070: 0000 0000 0000 0000 0000 0000 0000 797d ..............y} 00000080: 5e12 3e81 1370 6400 a6fa c4e5 058b 3136 ^.>..pd.......16 00000090: 5630 f8f0 2878 5f56 7788 279b a597 114c V0..(x_Vw.'....L
A complete hex dump revealed no recognizable string
FDisk said there was no recognizable file system
7zip thinks it's corrupt
I'm thinking that it has to be some type of binary image but since no tools, I've tried have given any indication that any recognizable partitions or files existed, maybe it's obfuscated or has some type of encryption.