(The pdf HD version of Android phone one click root principle analysis includes several key source code files listed in the analysis to help deepen the understanding of Android phone one click root. This paper first analyzes the process of obtaining the root permission of the mobile phone, and introduces several common root authorization vulnerabilities. Finally, through the analysis of the cooperation method between su and SuperUser.apk, it explains the real principle of root. Content touched: origin of root, previous history of root vulnerability, CVE-2009-2692, CVE-2010-EASY, GingerBreak, zergRush, CVE-2012-0056, how su collaborates with SuperUser.apk.)
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