I've been looking for a way to deal with this file and haven't found anything specific enough yet. I'm trying to find login credentials hardcoded into a router's firmware, and I think I'm about halfway to my goal, but I've hit a snag though.

I pulled the thing apart, found an internal serial interface, managed to solder pins in/hook up to a [Raspberry Pi](http://en.wikipedia.org/wiki/Raspberry_Pi)/get a console, but I'm stuck at a login prompt with no credentials. So…

I managed to stop the boot and get to a bootloader prompt (CFE). I thought I'd change the boot parameters to include `init=/bin/sh`, but the bootloader's crippled (intentional I think), so I can't change environment variables or specify a boot command or anything.

What I can do, though, is dump the flash. If I dump the entire thing and end up with a binary file (.bin) (I'm on [Arch Linux](http://en.wikipedia.org/wiki/Arch_Linux) BTW), **how do I read it?**

It would be straightforward except this file is a disk image, so it should contain multiple files and directories, but I have no idea what to do with that. Could I mount it as a (probably FAT) filesystem? How?

I stopped finding information about this project about five steps ago, I'm in uncharted territory here, and a bit out of my depth. More than anything, I'm trying to find an `/etc/passwd` or `/etc/shadow`; would there be a recognizable pattern in the data in those files that I could search for?