In Windows \(in my case\) **after installing Android Studio** I had the **SDK Tools installed in**: `C:\Users\<USerName>\AppData\Local\Android\Sdk\tools`
## GUI
### Prepare Virtual Machine
If you installed Android Studio, you can just open the main project view and access: _**Tools**_ -->_**AVD Manager.**_
In the last command **I created a VM named** "_AVD9_" using the **device** "_Nexus 5X_" and the **Android image** "_system-images;android-28;google\_apis;x86\_64_".
Now you can **list the virtual machines** you have created with:
```bash
C:\Users\<UserName>\AppData\Local\Android\Sdk\tools\bin\avdmanager.bat list avd
Name: AVD9
Device: Nexus 5X (Google)
Path: C:\Users\cpolo\.android\avd\AVD9.avd
Target: Google APIs (Google Inc.)
Based on: Android API 28 Tag/ABI: google_apis/x86_64
The following Android Virtual Devices could not be loaded:
However there are **a lot of different command line useful options** that you can use to initiate a virtual machine. Below you can find some interesting options but can ****[**find a complete list here**](https://developer.android.com/studio/run/emulator-commandline)
*`-dns-server 192.0.2.0, 192.0.2.255` : Allow to indicate comma separated the DNS servers to the VM.
* **`-http-proxy 192.168.1.12:8080`** : Allow to indicate an HTTP proxy to use \(very useful to capture the traffic using Burp\)
*`-port 5556` : Set the TCP port number that's used for the console and adb.
*`-ports 5556,5559` : Set the TCP ports used for the console and adb.
* **`-tcpdump /path/dumpfile.cap`** : Capture all the traffic in a file
#### System
*`-selinux {disabled|permissive}` : Set the Security-Enhanced Linux security module to either disabled or permissive mode on a Linux operating system.
*`-timezone Europe/Paris` : Set the timezone for the virtual device
*`-screen {touch(default)|multi-touch|o-touch}` : Set emulated touch screen mode.
* **`-writable-system`** : Use this option to have a writable system image during your emulation session. You will need also to run `adb root; adb remount`. This is very useful to install a new certificate in the system.
First of all you need to download the Der certificate from Burp. You can do this in _**Proxy**_ -->_**Options**_ -->_**Import / Export CA certificate**_
**Export the certificate in Der format** and lets **transform** it to a form that **Android** is going to be able to **understand.** Note that **in order to configure the burp certificate on the Android machine in AVD** you need to **run** this machine **with** the **`-writable-system`** option.
