Here are some additional resources I may have mentioned in my Infiltrate 2014 presentation.
White Paper: SQL Injection to MIPS Overflows - Part Deux
Slides: SQL Injection to MIPS Overflows - Part Deux
Original white paper from Black Hat USA 2012:
SQL Injections to MIPS Overflows: Rooting SOHO Routers
Proof of Concept Exploit code:
Here's my Github repository for proof-of-concept exploit code. In it, you'll find the exploit code for the Netgear WNDR 3700v3 that I demoed at Infiltrate, among a few others. The white paper is in there as well.
I talked about my Python API/Framework for developing buffer overflows. In particular it includes payloads for MIPS Linux.