Linux Gather System and User Information - Metasploit


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

Table Of Contents
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Module Overview

Name: Linux Gather System and User Information
Module: post/linux/gather/enum_system
Source code: modules/post/linux/gather/enum_system.rb
Disclosure date: -
Last modification time: 2022-09-01 14:56:28 +0000
Supported architecture(s): -
Supported platform(s): Linux
Target service / protocol: -
Target network port(s): -
List of CVEs: -

This module gathers system information. We collect installed packages, installed services, mount information, user list, user bash history and cron jobs

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/linux/gather/enum_system

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

msf6 > use post/linux/gather/enum_system

msf6 post(linux/gather/enum_system) > show info

       Name: Linux Gather System and User Information
     Module: post/linux/gather/enum_system
   Platform: Linux
       Arch: 
       Rank: Normal

Provided by:
  Carlos Perez <[email protected]>
  Stephen Haywood <[email protected]>
  sinn3r <[email protected]>
  ohdae <[email protected]>
  Roberto Espreto <[email protected]>

Compatible session types:
  Meterpreter
  Shell

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

Description:
  This module gathers system information. We collect installed 
  packages, installed services, mount information, user list, user 
  bash history and cron jobs

Module Options

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

msf6 post(linux/gather/enum_system) > show options

Module options (post/linux/gather/enum_system):

   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 linux/gather/enum_system post exploitation module:

msf6 post(linux/gather/enum_system) > show advanced

Module advanced options (post/linux/gather/enum_system):

   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 linux/gather/enum_system module can do:

msf6 post(linux/gather/enum_system) > show actions

Post actions:

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

Evasion Options

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

msf6 post(linux/gather/enum_system) > 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.

Could not determine package manager to get list of installed packages

Here is a relevant code snippet related to the "Could not determine package manager to get list of installed packages" error message:

94:	    when /gentoo/
95:	      packages_installed = execute("equery list")
96:	    when /arch/
97:	      packages_installed = execute("/usr/bin/pacman -Q")
98:	    else
99:	      print_error("Could not determine package manager to get list of installed packages")
100:	    end
101:	    packages_installed
102:	  end
103:	
104:	  def get_services(distro)

Could not determine the Linux Distribution to get list of configured services

Here is a relevant code snippet related to the "Could not determine the Linux Distribution to get list of configured services" error message:

116:	    when /gentoo/
117:	      services_installed = execute("/bin/rc-status --all")
118:	    when /arch/
119:	      services_installed = execute("/bin/egrep '^DAEMONS' /etc/rc.conf")
120:	    else
121:	      print_error("Could not determine the Linux Distribution to get list of configured services")
122:	    end
123:	    services_installed
124:	  end
125:	
126:	  def get_cpu_vulnerabilities

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See Also

Check also the following modules related to this module:

Authors

  • Carlos Perez <carlos_perez[at]darkoperator.com>
  • Stephen Haywood <averagesecurityguy[at]gmail.com>
  • sinn3r
  • ohdae <bindshell[at]live.com>
  • Roberto Espreto <robertoespreto[at]gmail.com>

Version

This page has been produced using Metasploit Framework version 6.2.26-dev. For more modules, visit the Metasploit Module Library.

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