Emulating Embedded Linux Devices at Scale w LightTouch Firmware Rehosting
Sigusr Polke
DEF CON 33 · Day 1 · Main Stage
Vulnerability research on embedded Linux devices — the routers, access points, and network appliances that constitute much of the internet's physical layer — has historically required either physical
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Sigusr Polke presents a light-touch firmware rehosting methodology targeting the Broadcom BCM4709 SoC that achieves ~95% functional emulation of ASUS, Netgear, TP-Link, and D-Link routers from a single kernel build, with no physical hardware. First vendor takes one day of work; subsequent vendors in the same SoC family take roughly one hour.