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Combination of executable code and data used to drive hardware devices and provide a first layer of software services prior to the operating system. Typical examples are BIOS, UEFI, the software running in a DSL router or a mobile phone.

2
votes
Use the command binwalk -Me FW_EA2750_1.1.7.172380_prod.img This will recursively extract all files and even extract the JFFS2 filesystem into the folder _FW_EA2750_1.1.7.172380_prod.img.extracted/jf …
answered Jun 27 '17 by Brandon Bryant
8
votes
1answer
my ISP and I have been trying to breakdown their newest firmware in order to bypass a new shell password feature they've implemented. The past firmware did not have this feature and simply allowed … you to login via ssh/telnet and then type 'sh' to drop into a simple Busybox shell. Now with the latest firmware, SSH seems to be severely broken/buggy, as does most of the CLI commands when you login …
asked Jun 16 '17 by Brandon Bryant
2
votes
The firmware itself most likely is not a binary. Also usually when you run file it will tell you something like: file busybox busybox: ELF 32-bit MSB executable, MIPS, MIPS32 version 1. My guess is … that you haven't actually extracted any binaries yet. My advice would be to use something like binwalk to extract specific files and binaries from the firmware. Running objdump on an entire firmware will probably give you an object dump of every single binary in your firmware and that could be a lot. …
answered Jun 27 '17 by Brandon Bryant
0
votes
Well I'm not sure why this is the answer but inside /lib are two directories: ./lib/public and ./lib/private Simply running the command cp -r ./lib/public/* ./lib/private/* ./lib will allow your bina …
answered Jun 28 '17 by Brandon Bryant
1
vote
1answer
Background In my endeavor to RE my router, I'm trying to emulate a router's firmware inside a QEMU MIPS system. I have debian-mips installed to a virtual disk that runs just fine. Its a MIPS32 Big … binaries from the router firmware: root@debian-mips:~/firm# chroot . ./bin/busybox.old ./bin/busybox.old: can't load library 'libcms_boardctl.so' However, I know it's there: root@debian-mips:~/firm …
asked Jun 28 '17 by Brandon Bryant