Narrow Results

An embedded system under the development of the microprocessor is widely applied in the world. The basis of further research and development and application is the question of how to build a small, real-time, good performance of embedded operating system. This research paper describes the methods and process of latest u-boot-2015.07, latest stable version of the linux-4.2.1 kernel, yaffs2 file system and the root file system transplant to the target board based on S3C2440 processor. The results prove that post-transplant Linux runs well on the target board. Embedded system migration not only familiarizes us with in-depth Bootloader, Linux kernel, file system and other software, but also get to know the various hardware resources of the target board.

Embedded ARM devices are suffering from the increasing threat caused by Bootkit seriously. Due to the limitation of traditional Bootkit detection techniques, this paper presents an underlying firmware detection method based on J-Link. We establish an attack model of embedded ARM devices considering the key methods of Bootkit attacks and conduct a proof of concept. Given the system booting process and loop identification, our method takes advantage of the information obtained in the process of tracking system booting, and monitors the stages of bootloader and kernel startup. Results show that our method can detect embedded ARM device Bootkit for severe types of embedded devices effectively.