Binwalk - firmware analysis tool

[macStuff]

https://github.com/ReFirmLabs/binwalk
https://gist.github.com/briankip/8f8747a2488af827e3b4
https://www.basicinputoutput.com/2016/08/the-binwalk-firmware-analysis-tool.html

binwalk is able to detect strings and filesystems inside the firmware

http://binwalk.org
https://web.archive.org/web/20131222100601/http://binwalk.org/

About
Binwalk is a firmware analysis tool designed for analyzing, reverse engineering and extracting data contained in firmware images.

Written in Python, it is fully scriptable and easily extendable via custom signatures and plugins.

It is currently supported on the Linux platform.

If you want to hack firmware, binwalk can help.

https://wiki.securityweekly.com/Reverse_Engineering_Firmware_Primer