Announcing ARMX Docker - DC11332

1. (c) SAUMIL SHAH @DC11332 DEEP DIVE INTO SAUMIL SHAH @therealsaumil 15 June 2021 DC11332 meetup

2. (c) SAUMIL SHAH @DC11332 # WHO AM I Saumil Shah CEO, Net Square @therealsaumil educating, entertaining and exasperating audiences since 1999

3. (c) SAUMIL SHAH @DC11332 A Word From Our Sponsors KEEP CALM AND NAMASTE !

4. (c) SAUMIL SHAH @DC11332 Introducing ARMX • An ARM Firmware Emulation Framework. • Ultimate Goal - create an IoT VM! • A Virtual IoT device makes for easy – runtime analysis – reverse engineering – fuzzing – exploit development • Gain insight into embedded hardware by trying to emulate it.

5. (c) SAUMIL SHAH @DC11332

6. (c) SAUMIL SHAH @DC11332 Inside an IoT device…

7. (c) SAUMIL SHAH @DC11332 CPU and Hardware Kernel Drivers File System nvram User Processes API UI libnvram …same same but different

8. (c) SAUMIL SHAH @DC11332 compressed FS CPU Kernel Boot Loader mounted FS nvram init scripts Services Apps libnvram The IoT Boot Up Process conf conf conf conf firmware Loads Kernel. Uncompresses FS to ramdisk, invokes init process. ramdisk userland Reads config from nvram. Builds system config files on the fly. Starts up system services. Invokes Applications and Application services. READY POWER ON

9. (c) SAUMIL SHAH @DC11332 QEMU CPU and Limited Hardware Kernel Drivers uncompressed Filesystem emulated nvram init scripts Services Apps libnvram Emulation: Goals and Challenges x x x x BUILDROOT Match the kernel with the one on the device chroot environment Implemented as an INI file, preloaded before "boot up" conf conf Fix to match QEMU environment Not all drivers load successfully

10. (c) SAUMIL SHAH @DC11332 JUST RELEASED!

11. (c) SAUMIL SHAH @DC11332 ARMX docker container

12. (c) SAUMIL SHAH @DC11332 ARMX directory layout

13. (c) SAUMIL SHAH @DC11332 Starting an ARMX device

15. (c) SAUMIL SHAH @DC11332 QEMU CPU and Limited Hardware Kernel Kernel and hostfs ready hostfs NFS /armx

17. (c) SAUMIL SHAH @DC11332 QEMU CPU and Limited Hardware Kernel Drivers NFS /armx emulated nvram nvram and userland init scripts conf conf init scripts libnvram

19. (c) SAUMIL SHAH @DC11332 QEMU CPU and Limited Hardware Kernel Drivers NFS /armx emulated nvram init scripts Services Apps libnvram ARM-X: Device "booted up" x x x x conf conf

22. (c) SAUMIL SHAH @DC11332 EYOD

23. (c) SAUMIL SHAH @DC11332 Firmware Firmware .bin file from Web/FTP UART Serial Console Direct from Flash memory

24. (c) SAUMIL SHAH @DC11332 1: Web/FTP site

25. (c) SAUMIL SHAH @DC11332 2: Hidden UART interfaces

26. (c) SAUMIL SHAH @DC11332 3: Take it directly from the chip!

27. (c) SAUMIL SHAH @DC11332 DEMO TIME!

28. (c) SAUMIL SHAH @DC11332 HERE BE THE GOODS https://github.com/therealsaumil/armx ! Announcements: @therealsaumil

29. (c) SAUMIL SHAH @DC11332 Thank you and … QUESTIONS? @therealsaumil

Announcing ARMX Docker - DC11332

Announcing ARMX Docker - DC11332

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