关键词: Android, 系统服务, 关键信息获取, binder

Abstract:

Obtaining key information of the Android system services is beneficial to realize the vulnerability mining and security evaluation of the Android system. In order to solve the problem of high system source dependency and poor compatibility on current incomplete system service key information acquisition methods, this paper proposes a hierarchical acquisition method of Android system service information. This method establishes a complete Binder communication behavior monitoring view at the application layer, framework layer and kernel layer of the Android system and then analyzes service dependency, service process information and interface parameter specifications to gain system service key information automatically without relying on source code. The experiments of acquiring system service key information are performed on multiple Android devices, and the results show that this method can acquire multiple system service key information comprehensively and has stronger practicability.

Key words: Android, system service, key information acquisition, binder