Apriorit Reversing and Research enabled Windows 7 – Android virtual OS runtime switching on a single device
Operating system virtualization can provide the required isolation but performance requirements also needed to be considered. Since a hardware device has limited resources, the idea was to make only one OS work at a time and allow the ability to switch instantly to another in run-time. In run-time switching, a user must be returned to the same system state (activity, running applications, etc.) as before the initial switch.
Since the system virtualization and switching approach proved to be a strong solution in the prior Android – Android phase, specialists from ETRI were eager to support Android – Windows 7 as the next stage.
The Windows 7 switching proved to be a challenging task since it required low-level system management functions whose methods are closed and undocumented. Research took 2 man-weeks and included the need to understand power management transition stages by reverse engineering the corresponding system files. Reverse engineers were able to describe the required hardware-abstraction level function interfaces and implement the prototype.
“I can’t imagine how we could have implemented this capability without using internal OS APIs and this is a good example of how the practice of legal Reverse Engineering can be extremely useful,” said Oleg Shomonko, Apriorit Development Director.
The Apriorit project team successfully integrated Windows 7 support and because of the implementation of the low-level hook, all performance requirements were also met – OS switching is almost instantaneous. Understanding power management transition stages also opens other interesting potential for future projects: such as power optimization or running system context transferring from one physical device to another.
Electronics and Telecommunications Research Institute (ETRI) is Korea’s largest government-funded research institute, focused on developing talent, techniques, and innovative ideas in the field of Information Telecommunications. The ultimate goal of ETRI is enhancing social and economic aspects of modern society. Founded in 1976 with headquarters in Daejeon, ETRI employs 1736 professionals and has produced some of the most significant technological advances in Korean history.
Apriorit is a software research and development company focused on security, virtualization, and system management solutions. Its specialties are kernel level and driver development, enhanced software research including reverse engineering, network technologies, work with different OS and mobile platforms. The company has more than 10 years of market experience and several development offices in Ukraine.
Apriorit Inc. (HQ)
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PR contact: Alexandra Zhiltsova
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