Amazon Fire TV has no interface for installing SSL certificates. Earlier this year I wrote a post “how to set proxy server settings on Amazon Fire TV”. This post extends beyond that describing how to install an SSL certificate in order to enable SSL proxying.

Generate a Charles SSL .pem certificate
To generate a certificate navigate to Help -> SSL Proxying -> Save Charles Root Certificate. Save the .pem file to the res/raw resources directory of your project.

Create an XML configuration
Add a new XML file in the res/xml directory of your project containing the following:

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<?xml version="1.0" encoding="utf-8"?>
<network-security-config>
    <debug-overrides>
        <trust-anchors>
            <certificates src="@raw/charles_ssl_cert" />
            <certificates src="user" />
        </trust-anchors>
    </debug-overrides>
</network-security-config>

Add the configuration to the Android Manifest
This configuration works with Android 7+. Most TV devices are running an OS of this level or greater. Add the following networkSecurityConfig entry to the Android Manifest application xml node.

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<application
    android:networkSecurityConfig="@xml/network_security_config
    ...

Enable SSL Proxying in Charles
Enable SSL proxying in Charles by navigating to Proxy -> SSL Proxy Settings and checking the “Enable SSL Proxy” checkbox. If done correctly you should now be able to see the unencrypted request/responses of HTTPS calls.