Firefox XPCOM Execute Command - Metasploit


This page contains detailed information about how to use the payload/firefox/exec metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.

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Module Overview

Name: Firefox XPCOM Execute Command
Module: payload/firefox/exec
Source code: modules/payloads/singles/firefox/exec.rb
Disclosure date: -
Last modification time: 2017-09-17 16:00:04 +0000
Supported architecture(s): firefox
Supported platform(s): Firefox
Target service / protocol: -
Target network port(s): -
List of CVEs: -

This module runs a shell command on the target OS without touching the disk. On Windows, this command will flash the command prompt momentarily. This can be avoided by setting WSCRIPT to true, which drops a jscript "launcher" to disk that hides the prompt.

Module Ranking and Traits

Module Ranking:

  • normal: The exploit is otherwise reliable, but depends on a specific version and can't (or doesn't) reliably autodetect. More information about ranking can be found here.

Basic Usage

msf > use payload/firefox/exec
msf payload(exec) > show options
    ... show and set options ...
msf payload(exec) > generate

To learn how to generate payload/firefox/exec with msfvenom, please read this.

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Msfconsole Usage

Here is how the firefox/exec payload looks in the msfconsole:

msf6 > use payload/firefox/exec

msf6 payload(firefox/exec) > show info

       Name: Firefox XPCOM Execute Command
     Module: payload/firefox/exec
   Platform: Firefox
       Arch: firefox
Needs Admin: No
 Total size: 1028
       Rank: Normal

Provided by:
  joev <[email protected]>

Basic options:
Name     Current Setting   Required  Description
----     ---------------   --------  -----------
CMD      touch /tmp/a.txt  yes       The command string to execute
WSCRIPT  false             yes       On Windows, drop a vbscript to hide the cmd prompt

Description:
  This module runs a shell command on the target OS without touching 
  the disk. On Windows, this command will flash the command prompt 
  momentarily. This can be avoided by setting WSCRIPT to true, which 
  drops a jscript "launcher" to disk that hides the prompt.

Module Options

This is a complete list of options available in the firefox/exec payload:

msf6 payload(firefox/exec) > show options

Module options (payload/firefox/exec):

   Name     Current Setting   Required  Description
   ----     ---------------   --------  -----------
   CMD      touch /tmp/a.txt  yes       The command string to execute
   WSCRIPT  false             yes       On Windows, drop a vbscript to hide the cmd prompt

Advanced Options

Here is a complete list of advanced options supported by the firefox/exec payload:

msf6 payload(firefox/exec) > show advanced

Module advanced options (payload/firefox/exec):

   Name           Current Setting  Required  Description
   ----           ---------------  --------  -----------
   JsIdentifiers                   no        Identifiers to preserve for JsObfu
   JsObfuscate    0                no        Number of times to obfuscate JavaScript
   VERBOSE        false            no        Enable detailed status messages
   WORKSPACE                       no        Specify the workspace for this module

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See Also

Check also the following modules related to this module:

Authors

  • joev

Version

This page has been produced using Metasploit Framework version 6.1.24-dev. For more modules, visit the Metasploit Module Library.

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