How to Use NVRAM When Emulating an Embedded Device

Introduction Last week, I came across a piece of firmware that I was particularly curious about. As with typical analysis on such an image, I extracted the squashfs root using binwalk and found the web service, httpd, that I was targeting. A smile spread across my face as I typed a command into the terminal to run httpd in QEMU user mode, but after pressing the “Enter” key, I saw it:...

2024-07-05 · 18 min · Ally Petitt