Added connecting Burp via HTTP Tookit

techniques/android/MASTG-TECH-0109.md

@@ -84,3 +84,30 @@ There are generally two approaches to this: **reFlutter** and **Frida**.
     ```
 
 5. Start intercepting traffic.
+
+## Intercepting Traffic using HTTP Toolkit
+
+If the above methods don't work, you can try using HTTP Toolkit, which provides another way to intercept Flutter HTTPS traffic.
+
+1. **Install HTTP Toolkit**
+    - You can download it from [here](https://httptoolkit.com/).
+
+2. **Configure HTTP Toolkit**
+    - Turn on the Android device and make sure it's connected to your machine.
+    - Go to HTTP Toolkit and select one of these options:
+        - `Intercept > Android App via Frida` (experimental)
+        - `Intercept > Android Device via ADB` (for better results)
+    - Accept the connection request that will pop up on your Android device.
+
+3. **Proxy HTTP Toolkit Traffic through Burp Suite**
+    - In HTTP Toolkit, go to `Settings > Connection Settings`.
+    - Set the proxy option as `Use an HTTP Proxy`.
+    - Enter the Burp Suite machine's IP and port (e.g., `192.168.8.2:8080`, `127.0.0.1:8082`) under the HTTP host proxy details and save it.
+    - Add the Burp certificate to Trusted CA Certificates.
+
+4. **Configure Burp Suite**
+    - In Burp Suite, go to `Proxy > Options > Proxy Listeners > Add`.
+    - Enter the port number configured in HTTP Toolkit settings.
+    - Select `All Interfaces` and save the configuration.
+
+5. **Start Intercepting Traffic**