~/talk

What You Can Do with an Accessibility Service

TalkinJapaneseat DroidKaigi 2018 · 2018-02-08..02-09· [android, security]
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Demonstrates that Android AccessibilityService APIs (getRootInActiveWindow, find nodes by id, performAction ACTION_SET_TEXT and ACTION_CLICK) allow reading the full view hierarchy, programmatically entering text and clicking buttons. Builds demos: a chat bot that auto-fills the input with current Unix ms and sends when the last digit is zero, and a runtime-permission demo that programmatically taps “Allow,” showing automatic SMS sending, camera/storage access and silent data exfiltration are possible. Notes that Google Play policy now bans AccessibilityService uses that are not for assistive purposes.

AI-written summary · about

  1. 0:00Introduction
  2. 3:09Accessibility Service basics
  3. 6:40View manipulation APIs
  4. 13:28Abuse cases and high permissions
  5. 14:34Chat auto-send demo
  6. 20:09Runtime permission abuse
  7. 24:44Summary
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