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The ANDROID_ID is unique in each application in Android.
To get the ANDROID_ID with Java inside Android I amd using this code:
import android.content.Context;
import android.content.ContentResolver;
import android.provider.Settings;
protected void onCreate(...) {
context = (Context)this;
String androidId = Settings.Secure.getString((ContentResolver)context.getContentResolver(), (String)"android_id");
}
But I want to run it inside some other application on my andoird phone.
I wanted to use Frida for this.
I am loading my injected script with Python:
import frida
device = frida.get_usb_device()
pid = device.spawn(["com.target.app"])
device.resume(pid)
time.sleep(1) #Without it Java.perform silently fails
session = device.attach(pid)
script = session.create_script(open("jsfrida.js").read())
script.load()
#prevent the python script from terminating
raw_input()
But inside my script I don’t understand how to call it, this is what I tried:
Java.perform(function (){
console.log("Inside java perform function");
var ActivityThread = Java.use('android.app.ActivityThread');
var Context = Java.use('android.content.Context');
var settings = Java.use('android.provider.Settings.Secure');
var ctx = Java.cast(ActivityThread.currentApplication().getApplicationContext(), Context);
//console.log(ctx.getPackageName());
//console.log(ctx.getContentResolver());
var androidId = settings.Secure.getString(ctx.getContentResolver(), "android_id");
console.log(androidId);
console.log("END");
});
But it doesn’t print the androidId, it only prints:
Script loaded successfully Inside java perform function
Answer
- Secure is inner class so you need to use
$- inner classes will be compiled to ClassName$InnerClassName
- To get
CotentResolveryou can invokegetContentResolverwithout casting.
$ frida -Uf com.app.example --no-pause
____
/ _ | Frida 12.1.2 - A world-class dynamic instrumentation toolkit
| (_| |
> _ | Commands:
/_/ |_| help -> Displays the help system
. . . . object? -> Display information about 'object'
. . . . exit/quit -> Exit
. . . .
. . . . More info at http://www.frida.re/docs/home/
Spawned `com.app.example`. Resuming main thread!
[Android::com.app.example]->
function getContext() {
return Java.use('android.app.ActivityThread').currentApplication().getApplicationContext().getContentResolver();
}
function logAndroidId() {
console.log('[?]', Java.use('android.provider.Settings$Secure').getString(getContext(), 'android_id'));
}
undefined
[Android::com.app.example]-> Java.perform(logAndroidId)
[?] 52d1497b52bf8a11
undefined
[Android::com.app.example]->
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