android-sdk-root,Android SDK下取得root权限

云英才
2023-12-01

On the emulator provided with the SDK r10,

you can get a root shell executing "adb shell" from your host computer.

Once you have such root shell, you cat follow this steps to get a

command that can log you as root from the terminal emulator:

# Remount /data to allow executables and setuids on itmount-o remount,rw/dev/block/mtdblock1/data# There's no "cp" command on Androidcat/system/bin/sh>/data/su# Give setuid permissions to the shellchmod7755/data/su

Now, from the emulator, just run "/data/su" and that's it, you're

root.

The normal "/system/xbin/su" command included in the SDK performs

internal user id checks, so these commands...

mount-o remount,rw/dev/block/mtdblock0/system

chmod7755/system/xbin/su

...just won't work. There's no way to trick /system/xbin/su to allow

the normal user (UID 10018 in my case) to become root.

Please note that dealing with setuid programs can be a security risk

(not higher than having a universal "su" command, though). Use this

solution at your own risk.

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