HTTP Toolkit is an HTTP debugger that can intercept, inspect & rewrite HTTP from any client, including Android. Next we need to intercept traffic from the emulator.
That should print 'Success', and Duolingo will appear in the app menu on your emulator.To install the app we only need the first two, so run: adb install-multiple.If you extract the APK, you'll find 5 files: You can download the Duolingo XAPK from APKPure here.To install a normal APK you've downloaded into a running emulator, just run:Īs an example, let's install and intercept the Duolingo app: Some apps are published as APKs, and some are published as XAPKs (app bundles), but either one can be installed manually using adb, which comes with the Android developer tools. You can do it easily though by downloading the APK directly from a 3rd party mirror like and installing using the Android developer tools. Since we don't have Google Play, you can't do that from the normal app store.
Once you've created your emulator, start it, and then we need to install the target app. The 'Google Play' target includes extra restrictions and is not easily interceptable.
To create an interceptable Android emulator, you should create an AVD, that: It is possible to create and start one using the Android SDK directly (see this article) but it's easiest to just install Android Studio, create an empty project, and use the developer tools provided there (if you're not familiar with these developer tools at all, there's an detailed official guide). Let's walk through how to do that, step-by-step: Setting up the emulator This means that you can't see their traffic with simple proxy tools, and you can't manually trust HTTPS debugging proxies without either editing and rebuilding the entire app, or setting up your own rooted device.įortunately, there's a quick & easy way around this: you can manually install official APKs into a normal Android emulator, which provides enough access that tools like HTTP Toolkit can capture all traffic for most apps for you totally automatically, and allow you to edit responses in just a couple of clicks. If you can see and edit these requests & responses then you can understand, debug, and change how any app works, but Android makes this hard to do.īy default, almost all apps will use HTTPS but won't trust user-installed certificates. HTTP is used by almost all Android apps to request data, load content, and send changes to backend servers.
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