May 13, 2024
Prerequisites
- Burp Suite
- Android SDK platform-tools (adb)
- gmsaas CLI tool
Step 1 – Setting up Burp Suite
1. In Burp Suite, go to the Proxy tab
2. Click on Proxy Settings
3. Here, we will choose to listen to port 8080 from all interfaces:
4. Click import/export CA certificate
- Export
- Certificate in DER format
5. Choose a path and name it anything with a .der extension
6. Click Next
Note: We will use the name Burp_cert.der as an example for this tutorial.
Step 2 – Upload and install the Burp Suite Certificate
as user certificate | as system (root) certificate
- Launch an instance.
- Drag’n drop the Burp_cert.der file you generated to the device display, or use the File upload widget.
- Go to Android Settings and install a certificate. In the results, click Install certificates from SD Card and select CA certificate. Click install anyway to bypass the warning.
- Navigate to /sdcard/Download and click on Burp_cert.der.
- If you are using Android 9 or below, you may be requested to set a secure lock screen. Comply and set a lock:
To verify whether the certificate is properly installed, go to Android settings, and click Trusted credentials. You should see the certificate in the USER tab:
Warning: This method alters the Android system significantly and may break the device. Use with extreme care and only if necessary!
Android 14+
Important: Installing System certificates on Android 14+ requires Magisk 23.0 and a third party plugin.
1. Root the device
- Android 14 and above images are not rooted by default, so make sure that the device is rooted before going any further. Please refer to Genymotion SaaS on-line documentation for more details.
2. Install Magisk
- Follow the instructions from our FAQ to install Magisk: How to install Magisk on Genymotion?
3. Install the certificate as user certificate
- Follow the instructions from the tab “as user certificate”
4. Install the Cert-Fix plugin for Magisk
- Download Cert-Fixer.zip from Cert-Fixer github repository.
- Upload the file to the device. You can either use adb push Cert-Fixer.zip /sdcard/Download or simply drag’n drop the file to the device display.
- Open Magisk and go to the Plugins section.
- Click “Install from storage” and select Cert-Fixed.zip from the Download folder (/sdcard/Download)
- Wait for the plugin to install. When done, click “Reboot” to reboot the device.
- After a reboot, the Burp Suite CA certificate (“PortSwigger CA”) should now be installed as a system certificate:
- Warning: The Cert-Fix plugin will copy any user certificate as system certificate on boot. If you don’t need to install any other system certificates, make sure to disable the plugin to avoid installing system certificates by mistake.
Android 12-13
1. Root the device
- Android 12-13 images are not rooted by default, so make sure that the device is rooted before going any further. Please refer to Genymotion SaaS on-line documentation for more details.
2. Convert the certificate
- We need to convert the Burp certificate into PEM format. Use openssl to convert DER to PEM, then output the subject_hash_old:
- Bash
- openssl x509 -inform DER -in Burp_cert.der -out Burp_cert.pem # Convert DER certificate to PEM
- openssl x509 -inform PEM -subject_hash_old -in Burp_cert.pem | head -1 # Display subject_hash_old
- openssl x509 -inform DER -in Burp_cert.der -out Burp_cert.pem
- openssl x509 -inform PEM -subject_hash_old -in Burp_cert.pem | head -1
- # Display subject_hash_old
- Then, rename the file with the output hash from the last command. For example, if the hash is 9a5ba575, then rename the file as 9a5ba575.0:
- Bash
- mv Burp_cert.pem 9a5ba575.0
3. Install the certificate
- You will need ADB and gmsaas CLI to proceed. Please refer to gmsaas CLI on-line documentation for more information.
- We need to make the /system partition writeable and push the certificate to the /system/etc/security/cacerts folder:
- Bash
- adb root
- adb shell 'mount -o rw,remount /'
- adb push 9a5ba575.0 /system/etc/security/cacerts/
- adb shell chmod 644 /system/etc/security/cacerts/9a5ba575.0
- Reboot the device.
- After the device has rebooted, browsing to Settings -> Security -> Trusted Credentials should show the new “Portswigger CA” as a system trusted CA:
Step 3 – Save as a Custom Recipe
We recommend saving the device as a custom recipe at this point.
Step 4 – Set Android global proxy to Burp Suite proxy
Important: If the global proxy is still set after saving the device as a custom recipe, or if you save the recipe at this point, Wifi will be unavailable the next time a device is started from this recipe. To avoid this, make sure to unset the global proxy before saving. See Step 5 – Disable global proxy section.
If you haven’t already done it, connect the device to ADB with gmsaas.
Next, use ADB to set port 3333 but you can use any other port as long as it is available:
- Bash
- adb shell settings put global http_proxy localhost:3333
Finally, bind Burp proxy to the device proxy configuration with adb reverse. We setup Burp suite to use port 8080, so we will bind the device pxoxy to this port:
- Bash
- adb reverse tcp:3333 tcp:8080
- adb reverse tcp:3333 tcp:8080
From there, your instance network should be intercepted by Burp suite.
Step 5 – Disable global proxy
If you need to save the instance, make sure to disable the global proxy before or the Internet connection may be disabled the next time you start it:
- Bash
- adb shell settings put global http_proxy :0
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Use Burp Suite with Genymotion Desktop
Use Burp Suite with Genymotion Device Image
Table of Contents
- Prerequisites
- Step 1 – Setting up Burp Suite
- Step 2 – Upload and install the Burp Suite Certificate
- Step 3 – Save as a Custom Recipe
- Step 4 – Set Android global proxy to Burp Suite proxy
- Step 5 – Disable global proxy