In Android with `adb` can I set an app to run with UID 0?
Apr 11, 7:34pm

Yes, you can set an app to run with UID 0 (root) on an Android device using adb, but only if the device is rooted and allows such operations.

How to Set an App to Run with UID 0

1. Root Access Required

  • UID 0 is the root user in Linux/Android.
  • You need root access (a rooted device) to change the UID of an app process.

2. Steps to Set UID 0

  1. Connect your device via ADB: 
    bash
    adb shell
  2. Check if the app process is running: 
    bash
    ps -A | grep <app-package-name>
  3. Find the PID (Process ID) of the app.
  4. Use kill to stop the app process: 
    bash
    kill <PID>
  5. Restart the app with UID 0: 
    bash
    am start -n <app-package-name>/<app-activity> --uid 0
    • Replace <app-package-name> and <app-activity> with your app's details.

3. Alternative: Modify /data/system/packages.xml

  • On a rooted device, you can manually edit /data/system/packages.xml to change the app's UID, but this is risky and may break the app.

Important Notes

  • Rooting is required for UID 0 access.
  • Security risk: Running an app as root can compromise the device's security.
  • Not recommended for production apps or security-sensitive operations.

Would you like help with a specific app or use case? Let me know!

Apr 11, 7:34pm

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