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23 lines
1.8 KiB
23 lines
1.8 KiB
1 year ago
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# Setup a debug mitm proxy to inspect all the app's network traffic
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1) Install mitmproxy: `brew install mitmproxy`.
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1) Launch `mitmweb` from a terminal. It will pop up mitmproxy's web interface in a web browser.
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1) Configure Android Emulator.
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1) Launch your android emulator.
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1) Open its settings page and go to Settings -> Proxy (nb this tab isn't visible when running the emu inside the Android Studio window, you need to set it so it runs in its own window).
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1) Disable "Use Android Studio HTTP proxy settings" and pick "Manual proxy configuration".
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1) Set `127.0.0.1` as "Host name" and `8080` as "Port number".
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1) Click "Apply" and verify that "Proxy status" is "Success" and close the settings window.
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<img width="932" alt="Screenshot 2023-10-04 at 14 48 47" src="https://github.com/vector-im/element-x-android/assets/1273124/bf99a053-20b0-42a4-91d3-9602f709f684">
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1) Install the mitmproxy CA cert (this is needed to see traffic from java/kotlin code, it's not needed for traffic coming from native code e.g. the matrix-rust-sdk).
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1) Open the emulator Chrome browser app
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1) Go to the url `mitm.it`
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1) Follow the instructions to install the CA cert on Android devices.
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<img width="606" alt="Screenshot 2023-10-04 at 14 51 27" src="https://github.com/vector-im/element-x-android/assets/1273124/5f2b6f27-6958-4ea7-97fe-c7f06d105da5">
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1) Slightly modify the Element X app source code.
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1) Go to the `RustMatrixClientFactory.create()` method.
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1) Add `.disableSslVerification()` in the `ClientBuilder` method chain.
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1) Build and run the Element X app.
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1) Enjoy, you will see all the traffic in mitmproxy's web interface.
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<img width="1110" alt="Screenshot 2023-10-04 at 14 50 03" src="https://github.com/vector-im/element-x-android/assets/1273124/5d039efd-448d-426c-a384-dbbceb9f33ac">
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