OSX VPN Manager - Metasploit


This page contains detailed information about how to use the post/osx/manage/vpn metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.

Module Overview


Name: OSX VPN Manager
Module: post/osx/manage/vpn
Source code: modules/post/osx/manage/vpn.rb
Disclosure date: -
Last modification time: 2017-07-24 06:26:21 +0000
Supported architecture(s): -
Supported platform(s): OSX
Target service / protocol: -
Target network port(s): -
List of CVEs: -

This module lists VPN connections and tries to connect to them using stored credentials.

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


There are two ways to execute this post module.

From the Meterpreter prompt

The first is by using the "run" command at the Meterpreter prompt. It allows you to run the post module against that specific session:

meterpreter > run post/osx/manage/vpn

From the msf prompt

The second is by using the "use" command at the msf prompt. You will have to figure out which session ID to set manually. To list all session IDs, you can use the "sessions" command.

msf > use post/osx/manage/vpn
msf post(vpn) > show options
    ... show and set options ...
msf post(vpn) > set SESSION session-id
msf post(vpn) > exploit

If you wish to run the post against all sessions from framework, here is how:

1 - Create the following resource script:


framework.sessions.each_pair do |sid, session|
  run_single("use post/osx/manage/vpn")
  run_single("set SESSION #{sid}")
  run_single("run")
end

2 - At the msf prompt, execute the above resource script:

msf > resource path-to-resource-script

Required Options


  • SESSION: The session to run this module on.

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Msfconsole Usage


Here is how the osx/manage/vpn post exploitation module looks in the msfconsole:

msf6 > use post/osx/manage/vpn

msf6 post(osx/manage/vpn) > show info

       Name: OSX VPN Manager
     Module: post/osx/manage/vpn
   Platform: OSX
       Arch: 
       Rank: Normal

Provided by:
  Peter Toth <[email protected]>

Compatible session types:
  Meterpreter
  Shell

Available actions:
  Name        Description
  ----        -----------
  CONNECT     Connect to a VPN using stored credentials
  DISCONNECT  Disconnect from a VPN
  LIST        Show a list of VPN connections

Basic options:
  Name               Current Setting         Required  Description
  ----               ---------------         --------  -----------
  NETWORKSETUP_PATH  /usr/sbin/networksetup  yes       Path to the networksetup executable.
  SCUTIL_PATH        /usr/sbin/scutil        yes       Path to the scutil executable.
  SESSION                                    yes       The session to run this module on.
  VPN_CONNECTION     OSX_VPN                 yes       Name of VPN connection. `set ACTION LIST` to get a list.

Description:
  This module lists VPN connections and tries to connect to them using 
  stored credentials.

Module Options


This is a complete list of options available in the osx/manage/vpn post exploitation module:

msf6 post(osx/manage/vpn) > show options

Module options (post/osx/manage/vpn):

   Name               Current Setting         Required  Description
   ----               ---------------         --------  -----------
   NETWORKSETUP_PATH  /usr/sbin/networksetup  yes       Path to the networksetup executable.
   SCUTIL_PATH        /usr/sbin/scutil        yes       Path to the scutil executable.
   SESSION                                    yes       The session to run this module on.
   VPN_CONNECTION     OSX_VPN                 yes       Name of VPN connection. `set ACTION LIST` to get a list.

Post action:

   Name  Description
   ----  -----------
   LIST  Show a list of VPN connections

Advanced Options


Here is a complete list of advanced options supported by the osx/manage/vpn post exploitation module:

msf6 post(osx/manage/vpn) > show advanced

Module advanced options (post/osx/manage/vpn):

   Name       Current Setting  Required  Description
   ----       ---------------  --------  -----------
   VERBOSE    false            no        Enable detailed status messages
   WORKSPACE                   no        Specify the workspace for this module

Post Actions


This is a list of all post exploitation actions which the osx/manage/vpn module can do:

msf6 post(osx/manage/vpn) > show actions

Post actions:

   Name        Description
   ----        -----------
   CONNECT     Connect to a VPN using stored credentials
   DISCONNECT  Disconnect from a VPN
   LIST        Show a list of VPN connections

Evasion Options


Here is the full list of possible evasion options supported by the osx/manage/vpn post exploitation module in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):

msf6 post(osx/manage/vpn) > show evasion

Module evasion options:

   Name  Current Setting  Required  Description
   ----  ---------------  --------  -----------

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Error Messages


This module may fail with the following error messages:

Check for the possible causes from the code snippets below found in the module source code. This can often times help in identifying the root cause of the problem.

Invalid action


Here is a relevant code snippet related to the "Invalid action" error message:

38:	      ])
39:	
40:	  end
41:	
42:	  def run
43:	    fail_with(Failure::BadConfig, "Invalid action") if action.nil?
44:	
45:	    scutil_path = datastore['SCUTIL_PATH'].shellescape
46:	    networksetup_path = datastore['NETWORKSETUP_PATH'].shellescape
47:	    vpn_name = datastore['VPN_CONNECTION']
48:	

Aborting, scutil binary not found.


Here is a relevant code snippet related to the "Aborting, scutil binary not found." error message:

45:	    scutil_path = datastore['SCUTIL_PATH'].shellescape
46:	    networksetup_path = datastore['NETWORKSETUP_PATH'].shellescape
47:	    vpn_name = datastore['VPN_CONNECTION']
48:	
49:	    if not file?(scutil_path)
50:	      print_error("Aborting, scutil binary not found.")
51:	      return
52:	    end
53:	
54:	    if not file?(networksetup_path)
55:	      print_error("Aborting, networksetup binary not found.")

Aborting, networksetup binary not found.


Here is a relevant code snippet related to the "Aborting, networksetup binary not found." error message:

50:	      print_error("Aborting, scutil binary not found.")
51:	      return
52:	    end
53:	
54:	    if not file?(networksetup_path)
55:	      print_error("Aborting, networksetup binary not found.")
56:	      return
57:	    end
58:	
59:	    # Fetch the list of configured VPN connections
60:	    cmd_list = "#{scutil_path} --nc list"

<VPN_NAME> not found


Here is a relevant code snippet related to the "<VPN_NAME> not found" error message:

81:	        print_status("#{vpn_name} already connected")
82:	        return
83:	      end
84:	
85:	      unless disconnected_names.include?(vpn_name)
86:	        print_error("#{vpn_name} not found")
87:	        return
88:	      end
89:	
90:	      cmd_up = "#{networksetup_path} -connectpppoeservice '#{vpn_name}'"
91:	      vprint_status(cmd_up)

<VPN_NAME> not found


Here is a relevant code snippet related to the "<VPN_NAME> not found" error message:

95:	        print_status("#{vpn_name} already disconnected")
96:	        return
97:	      end
98:	
99:	      unless connected_names.include?(vpn_name)
100:	        print_error("#{vpn_name} not found")
101:	        return
102:	      end
103:	
104:	      identifier = parse_vpn_connection_identifier(vpn_data, vpn_name)
105:	      unless identifier

Could not parse <VPN_NAME> identifier


Here is a relevant code snippet related to the "Could not parse <VPN_NAME> identifier" error message:

101:	        return
102:	      end
103:	
104:	      identifier = parse_vpn_connection_identifier(vpn_data, vpn_name)
105:	      unless identifier
106:	        print_error("Could not parse #{vpn_name} identifier")
107:	        return
108:	      end
109:	      cmd_down = "#{scutil_path} --nc stop #{identifier}"
110:	      vprint_status(cmd_down)
111:	      cmd_exec(cmd_down)

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See Also


Check also the following modules related to this module:

Authors


  • Peter Toth <globetother[at]gmail.com>

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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