XPosed Investigation Notes

• Download the XPrivacy project source code from the GitHub repository.

   $ cd ~/workspace
   $ git clone https://github.com/M66B/XPrivacy.git
  

• Import the project into Eclipse > File > Import... > Android > Existing Android Code Into Workspace and click next. Click Browse... to select ~/workspace/XPrivacy and rename the project name to XPrivacy. Then, click finish.

• Add Java Build Path Libraries: Right click the project > Build Path > Configure Build Path... > go to Libraries tab > click Add External JAR... > choose android-support-v4.jar and android-support-v7-appcompat.jar then click OK.

• Import the following two projects into the workspace and check the Is Library box in Properties > Android > Library for each project.

  ~/adt/sdk/extras/android/support/v7/cardview ~/adt/sdk/extras/android/support/v7/appcompat

• Add Android Library for the XPrivacy Project: Right click the project > Properties > Android > Library > Add... > choose the two projects above.

• (Optional:) Switch the Project Build Target to Android 4.4.2

**Note: ** if switched to Android 4.4.2 some errors may emerge due to incompatible Android 5.0 functions, such as the heart rate sensor, which should be commented out as shown below.

```
/* ///////////// XSensorManager.java ////////////////
} else if (type == Sensor.TYPE_HEART_RATE) {
			if (isRestricted(param, "heartrate"))
				return true;
*/
```

• https://github.com/rovo89/XposedBridge/wiki/Development-tutorial
• https://github.com/rovo89/XposedBridge/wiki/Helpers
• https://github.com/rovo89/XposedBridge/wiki/Replacing-resources

1. Identify entrance(s) in assets > xposed_init file.

Title: Here is a title
A->B: Normal line
B-->C: Dashed line
C->>D: Open arrow
D-->>A: Dashed open arrow

Source code from package com.asksven.xposed.trace

import de.robv.android.xposed.XSharedPreferences;
...

public class XposedHooks implements IXposedHookLoadPackage
{
	public static final String TAG = "XposedTrace";
	
	public void handleLoadPackage(final LoadPackageParam lpparam) throws Throwable
	{
		
		XSharedPreferences sharedPrefs = new XSharedPreferences("com.asksven.xposedtrace");
//		XposedBridge.log("Loaded app: " + lpparam.packageName);
		
		if (!lpparam.packageName.equals("android"))
			return;
		
		...
		
		if ((sharedPrefs != null) && sharedPrefs.getBoolean("trace_location_manager_service", true))
		{
			systemLogforClass("com.android.server.LocationManagerService", "D", lpparam);
		}
		
		...

import java.util.LinkedList;
import java.util.Queue;

public class MovingAverage {
    private int window_size;
    private double cur_avg;
    private Queue<Double> win;

    public MovingAverage(int ws){
        if(ws <= 0) return;
        window_size = ws;
        cur_avg = 0;
        win = new LinkedList<Double> ();
    }

    public double next(double num){
        double sum = 0;
        sum = cur_avg * win.size() ;

        if(win.size() >= window_size)
            sum -= win.poll();
            
        win.add(num);
        cur_avg = (sum + num) / win.size();
        return cur_avg;
    }
}