Part 5 is up. In this and the next several parts we start analyzing the structure of Netgear R6200 firmware updates. We switch over to the HTTP daemon because it's less broken and a little easier to analyze than upnpd.
The overall goal is to reverse engineer the firmware format so we can generate a malicious firmware image to use when exploiting the SetFirmware SOAP action described in parts 1-4. Binary patching, emulating with QEMU, and debugging with IDA Pro are recommended for the next several installments. Here is some recommended reading to help get that set up: - Remote Debugging with QEMU and IDA Pro http://shadow-file.blogspot.com/2015/01/dynamically-analyzing-wifi-routers-upnp.html - Patching, Emulating, and Debugging a Netgear Embedded Web Server http://shadow-file.blogspot.com/2015/01/patching-emulating-and-debugging.html If you missed my post to Full Disclosure where I introduced the series, here's that: http://seclists.org/fulldisclosure/2015/May/44 As always I welcome feedback via email or Twitter. I'm @zcutlip. I hope you enjoy it. Cheers! Zach -- :wq! _______________________________________________ Sent through the Full Disclosure mailing list https://nmap.org/mailman/listinfo/fulldisclosure Web Archives & RSS: http://seclists.org/fulldisclosure/
