MitM attacks are one of the most common attacks on mobile devices, as users tend to connect to public Wi-Fi networks so often. Being able to perform MitM on a device not only provides data to the attacker when the user transmits it over an insecure network, but also provides a way to tamper with his communications and exploit vulnerabilities in certain scenarios. WebView addJavaScriptInterface vulnerability is one good example where the attacker needs to intercept communications and inject arbitrary JavaScript into the HTTP response in order to gain complete access to the victim's device. We will discuss how one can achieve code execution by exploiting addJavaScriptInterface vulnerability using the Metasploit framework in a later section of this chapter. This section shows one of the oldest attacks on the Internet that can be used to intercept HTTP communications using a tool called Ettercap.

In Chapter 1, Setting Up the Lab we mentioned that readers should have Kali Linux downloaded...