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WordPress Security For Developers. We also provide the ip of our attack machine, and the port we want to listen on They are the values ngrok assigned to me.
The name of our generated apk is malicious. The next step is to setup a listener on our attack machine using msfconsole. Now we need to send the apk to the victim and getting them to install and launch it. In this case, I transferred it to my own phone and launched the apk by clicking on it. I received numerous warning messages on how apps installed from unknown sources could be dangerous.
I also saw that the app is requesting a lot of permissions e. This is a red flag. I proceeded with the installation anyway. I received a connection back on my listener and can now start doing malicious things e. For a list of commands, we can run, type help on the meterpreter session. Before proceeding further, we need to install a legitimate android apk file on our attack machine.
Using a site such as apkmirror or apkpure , you can download legitimate apk files. Kindly note that not all apk files can easily be exploited in this way. Some of them have protections in place. Firstly, use msfvenom to generate and inject the malicious payload onto the legitimate apk file by using the command below:. MSFVenom will decompile the application and it will try to discover the hook point of where the payload will be injected.
Furthermore it will poison the Android Manifest file of the application with additional permissions that could be used for post exploitation activities.
The output can be seen below:. Once we have done that, everything else remains the same as in the first method from setting up the listener using msfconsole. The advantage with this method is that the app looks more legitimate. App Developers should also have security assessments carried out on their apps to protect the binaries so that their apps cannot be trojanized. NetworkOnMainThreadException at android.
DownloadFiles MainActivity. When I run this code in the emulator the code still does not work - the file is not getting downloaded. Using Async task. I would recommend using Android DownloadManager. It is bad practice to perform network operations on the main thread, which is why you are seeing the NetworkOnMainThreadException.
It is prevented by the policy. If you really must do it for testing, put the following in your OnCreate:. Please remember that is is very bad practice to do this, and should ideally move your network code to an AsyncTask or a Thread. More info about AsyncTask on Android documentation. Run these codes in thread or AsyncTask. Here is the code help you to download file from server at the same time you can see the progress of downloading on your status bar.
Here i create an asynchronous task to download file. Note: If you want code with import package then Click Here. Now Step 2: You need to call above ayncronous task on your click event. To call AsyncTask use below code:. Note: Here You can see filename variable in file parameter. This is the name which i use to save my downloaded file in local device. When you click on download button, first you have to create local storage path where you want to save it, we should put download file functionality into ExecutorService that is used instead of AsyncTask because AsyncTask is deprecated.
Starting from api level 11 or Honeycomb doing network operations on main thread is forbidden. Use thread or asynctask. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Android - How to download a file from a webserver Ask Question. Asked 8 years, 7 months ago. Active 2 months ago. Viewed k times. DataInputStream; import java.
File; import java. FileOutputStream; import java. IOException; import java. InputStream; import java. MalformedURLException; import java. URL; import android. Activity; import android. Bundle; import android.
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