At first, though he found a JTAG interface, but it didn’t work. Getting into the bootloader allowed access to the firmware. The router runs OpenWRT, so once you have access to the UART, you are in as root. ![]() ![]() We would have read the baud rate with the scope, which does, but he also mentions a script to work it out and create a minicom profile that looked interesting. But we enjoyed the methodology used to work out the UART pins on the board. The first part of the presentation might be a little basic for most Hackaday readers, but presumably, the intended audience might not know much about soldering or multimeters. ![]() Have you ever wanted to watch someone reverse engineer a piece of hardware and pick up some tips? You can’t be there while tears open a Netgear N300 router, but you can see his process step by step in some presentation charts, and you’ll get a few ideas for the next time you want to do something like this.
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