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BeEF (The Browser Exploitation Framework) is a penetration testing tool that focuses on the web browser. BeEF offers an efficient and affective penetration test tool to assess the actual security posture of a target environment by using client-side attack vectors. BeEF looks beyond just the network perimeter and client system. It lets you examine exploitability within the context of the web browser.

Deploying a Marketplace App

The Linode Marketplace lets you easily deploy software on a Compute Instance using Cloud Manager. See Get Started with Marketplace Apps for complete steps.

  1. Log in to Cloud Manager and select the Marketplace link from the left navigation menu. This displays the Linode Create page with the Marketplace tab pre-selected.

  2. Under the Select App section, select the app you would like to deploy.

  3. Complete the form by following the steps and advice within the Creating a Compute Instance guide. Depending on the Marketplace App you selected, there may be additional configuration options available. See the Configuration Options section below for compatible distributions, recommended plans, and any additional configuration options available for this Marketplace App.

  4. Click the Create Linode button. Once the Compute Instance has been provisioned and has fully powered on, wait for the software installation to complete. If the instance is powered off or restarted before this time, the software installation will likely fail.

To verify that the app has been fully installed, see Get Started with Marketplace Apps > Verify Installation. Once installed, follow the instructions within the Getting Started After Deployment section to access the application and start using it.

Note
Estimated deployment time: BeEF should be fully installed within 10-15 minutes after the Compute Instance has finished provisioning.

Configuration Options

  • Supported distributions: Ubuntu 22.04 LTS
  • Recommended plan: For best results, 4GB Dedicated CPU or Shared Compute instance for BeEF

BeEF Options

  • Email address (required): Enter the email address to use for generating the SSL certificates.

Limited Sudo User

You need to fill out the following fields to automatically create a limited sudo user, with a strong generated password for your new Compute Instance. This account will be assigned to the sudo group, which provides elevated permissions when running commands with the sudo prefix.

  • Limited sudo user: Enter your preferred username for the limited user. No Capital Letters, Spaces, or Special Characters.

    Locating The Generated Sudo Password

    A password is generated for the limited user and stored in a .credentials file in their home directory, along with application specific passwords. This can be viewed by running: cat /home/$USERNAME/.credentials

    For best results, add an account SSH key for the Cloud Manager user that is deploying the instance, and select that user as an authorized_user in the API or by selecting that option in Cloud Manager. Their SSH pubkey will be assigned to both root and the limited user.

  • Disable root access over SSH: To block the root user from logging in over SSH, select Yes. You can still switch to the root user once logged in, and you can also log in as root through Lish.

    Accessing The Instance Without SSH
    If you disable root access for your deployment and do not provide a valid Account SSH Key assigned to the authorized_user, you will need to login as the root user via the Lish console and run cat /home/$USERNAME/.credentials to view the generated password for the limited user.

Custom Domain (Optional)

If you wish to automatically configure a custom domain, you first need to configure your domain to use Linode’s name servers. This is typically accomplished directly through your registrar. See Use Linode’s Name Servers with Your Domain. Once that is finished, you can fill out the following fields for the Marketplace App:

  • Linode API Token: If you wish to use the Linode’s DNS Manager to manage DNS records for your custom domain, create a Linode API Personal Access Token on your account with Read/Write access to Domains. If this is provided along with the subdomain and domain fields (outlined below), the installation attempts to create DNS records via the Linode API. See Get an API Access Token. If you do not provide this field, you need to manually configure your DNS records through your DNS provider and point them to the IP address of the new instance.
  • Subdomain: The subdomain you wish to use, such as www for www.example.com.
  • Domain: The domain name you wish to use, such as example.com.

Warning
Do not use a double quotation mark character (") within any of the App-specific configuration fields, including user and database password fields. This special character may cause issues during deployment.

Getting Started after Deployment

Accessing the BeEF App

  1. Once the app has been fully deployed, view the BeEF completion message through one of the methods below:

    • Lish Console: Within Cloud Manager, navigate to Linodes from the left menu, select the Compute Instance you just deployed, and click the Launch LISH Console button. See Using the Lish Console.

    • SSH: Log in to your Compute Instance over SSH using the root user and run the following command. See Connecting to a Remote Server Over SSH for assistance.

      cat /home/$USERNAME/.credentials
  2. Open your web browser and navigate to https://[domain]:3000/ui/panel, where [domain] can be replaced with the custom domain you entered during deployment or your Compute Instance’s rDNS domain (such as 192-0-2-1.ip.linodeusercontent.com). You can also use your IPv4 address. See the Managing IP Addresses guide for information on viewing IP addresses and rDNS.

    Screenshot of the BeEF login prompt

  3. Enter beef as the username and use the password in the /home/$USERNAME/.credentials file.

    Note

    If you forget this password, run the following command when logged in through Lish or SSH:

    less /home/beef/config.yaml

    Scroll down until you see the credentials section with the user and passwd parameters as shown in the example output below:

    # Credentials to authenticate in BeEF.
    # Used by both the RESTful API and the Admin interface
    credentials:
        user:   "beef"
        passwd: "T$a%T1O*&2kP"

Now that you’ve accessed your BeEF instance, check out the official BeEF documentation to learn how to further use your BeEF instance.

Note
Currently, Linode does not manage software and systems updates for Marketplace Apps. It is up to the user to perform routine maintenance on software deployed in this fashion.

More Information

You may wish to consult the following resources for additional information on this topic. While these are provided in the hope that they will be useful, please note that we cannot vouch for the accuracy or timeliness of externally hosted materials.

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