(Ab)using Binaries from Embedded Devices for Fun and Profit

### Exploring Exotic Hardware Binaries in Embedded Devices At 00:00, security researcher Ricky (working gamer) presents on extracting, reverse-engineering, and repurposing embedded binaries across unusual hardware architectures on the DEF CON 26 Main Stage.

### Hardware Interfacing and Storage Extraction At 06:52, Ricky explains methods for extracting non-volatile storage from commercial consumer hardware. He discusses tapping SD card buses, SPI flash chips, and eMMC packages, highlighting how serial peripheral interfaces can be accessed to extract raw filesystem images from locked devices.

### Debugging in Restricted Environments At 13:09, the talk explores challenges encountered when analyzing stripped binaries without access to native compilers or on-device debuggers. Ricky explains techniques for extracting shared libraries, resolving missing dynamic linker dependencies, and identifying attack surfaces across undocumented vendor daemons.

### Local Privilege Escalation and Initialization Scripts At 19:45, Ricky details internal device reconnaissance. By analyzing startup scripts, cron jobs, and misconfigured binary setuid permissions, he reveals common engineering oversights that enable security researchers to escalate local privileges to root on consumer hardware.

### Cross-Architecture Emulation with QEMU Concluding between 26:34 and 35:00, the speaker demonstrates running extracted binaries on host workstations using QEMU user-mode emulation. By cross-emulating architectures ranging from MIPS and ARM to enterprise mainframe s390x binaries, researchers can execute and fuzz proprietary vendor tools without requiring physical target hardware.

(AI summary — Gemini Flash)