How to Hook Browser From Any Webpage Beef
Equally we promised you in our last Jour-Fix meeting there is new series on hacking mobile devices, web applications, and even Facebook and Google hither in Pheniix, and we intend to deliver you those in 2020. In this commodity, nosotros try to hack browsers with Beef.
In each of those topics, we will introduce you to new hacking tools and techniques, though, 1 tool that we volition be using in all of those areas is chosen the Browser Exploitation Framework, or BeEF.
Introduction to Beef:
BeEF is short for The Browser Exploitation Framework. It is a penetration testing tool that focuses on the spider web browser.
Among growing concerns about web-borne attacks against clients, including mobile clients, BeEF allows the professional penetration tester to assess the actual security posture of a target environment by using customer-side attack vectors. Unlike other security frameworks, Beefiness looks past the hardened network perimeter and client system and examines exploitability within the context of the 1 open door: the web browser. Beefiness will hook one or more web browsers and utilize them equally beachheads for launching directed command modules and further attacks against the system from within the browser context.
Similar to Metasploit, Beefiness is a framework for launching attacks. Unlike Metasploit, information technology is specific to launching attacks against web browsers. In some cases, we will exist able to use Beefiness in conjunction with Metasploit to launch specific attacks, so let's jump in!
Beef was developed past a group of developers led past Wade Alcorn. Built on the familiar Scarlet on Rails platform, BeEF was adult to explore the vulnerabilities in browsers and test them. In item, Beefiness is an excellent platform for testing a browser'due south vulnerability to cantankerous-site scripting (XSS) and other OWASP vulnerabilities.
How to start BeEF?
Beef is built into Kali Linux, and it tin be started as a service and accessed via a web browser on your localhost. So permit'southward outset leap into BeEF. Outset the BeEF service by going to "Applications" -> "Kali Linux" -> "Arrangement Services" -> "Beefiness" -> "beefiness start."
Admission Beef via a browser:
The Beef server tin exist accessed via any browser on our localhost (127.0.0.1) webserver at port 3000. To access its authentication page, go to http://localhost:3000/ui/authentication
The default credentials are "beef" for both username and password.
Crawly! At present you accept successfully logged into BeEF and are set up to begin using this powerful platform to hack web browsers.
Note that in the screenshot beneath that my local browser, 127.0.0.ane, appears in the left hand "Hooked Browsers" explorer after I clicked on the link to the demo page. Beefiness also displays its "Getting Started" window to the right.
Viewing Browser Details
If we click on the local browser, it will provide more choices to the right including a "Details" window where we can get all the particulars of that browser. Since I am using the Iceweasel browser built into Kali, which is built upon Firefox, it shows me that the browser is Firefox.
Information technology besides shows me the version number (24), the platform (Linux i686), any components (Flash, web sockets, etc.), and more than information that nosotros will be able to utilise in later web application hacks.
Hooking a Browser
The key to success with Beefiness is to "hook" a browser. This basically means that we need the victim to visit a vulnerable web app. This injected lawmaking in the "hooked" browser then responds to commands from the Beefiness server. From there, we tin do a number of malicious things on the victim's computer.
Beefiness has a JavaScript file called "hook.js," and if we are successful to go the victim to execute it in a vulnerable web app, we will claw their browser!
In the screenshot below, I have "hooked" an Internet Explorer 6 browser on an old Windows XP on my LAN at IP 192.168.89.191.
Executing Commands in the Browser
Now, that we have hooked the victim'south browser, we tin can employ numerous built-in commands that can be executed from the victim's browser. Beneath are simply a few examples; there are many others.
- Get Visited Domains
- Webcam
- Get All Cookies
- Catch Google Contacts
- Screenshot
- Go Visited URLs
In the screenshot below, I chose the "Webcam" command that many of y'all may exist interested in. As you can see, when I execute this command, an Adobe Wink dialog box will popular up on the screen of the user asking, "Allow Webcam?" If they click on "Permit," it will kickoff to return pictures from the victim to yous.
Of class, the user will NOT click on allow because even the well-nigh idiot PC user present knows some basic security skills. Therefore you tin customize the text. For instance, you could customize the button to say "A security update is available for yous! Click hither to secure your PC!" or "Your software is out of date. Click here to update and keep your computer secure." Other such letters might entice the victim to click on the box.
Getting Cookies
Once we have the browser hooked, there are almost unlimited possibilities of what nosotros can do. If nosotros wanted the cookies of the victim, nosotros can go to "Chrome Extensions" and select "Get All Cookies" equally shown in the screenshot beneath.
When we "Execute" information technology, information technology will begin collecting all the cookies from the browser. Obviously, once you have the user'southward cookies, you are likely to have access to their websites as well.
BeEF is an extraordinary and powerful tool for exploiting web browsers. In add-on to what I have shown y'all here, information technology can likewise be used to leverage operating system attacks.
Common bug:
If you take problems in running Beef then try this:
TRADEMARK LEGAL Discover
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Source: https://www.linkedin.com/pulse/hack-browsers-beef-hook-mike-ghahremani
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