How to unpack the firmware of the DVR?

Question

linux

Hello, there is a DVR and firmware from the off site to it, there are files in the archive without the extension
www.support.praxis-cctv.ru/index.php?option=com_co... under 6104mf
I tried to do it according to the article https://habr.com /post/213411/
But nothing happened, I did everything from under the virtual machine, in all the articles that I found the firmware files were either img or bin, here it's just files without extension
How can I unpack it? Thanks in advance

Answer 1

either img or bin, here just files without extension

it does not matter.
All firmware files are just a byte-by-byte flash dump anyway.
It may not be compressed, but it may be compressed or even encrypted.
ValdikSS has a selection of articles on the topic of reverse firmware and hardware on Habré (see his publications) .
In the toaster format, the whole topic of reversing engineering cannot be revealed, if you decide to do it, then study the materiel :D