Microsoft SQL Server SUSER_SNAME Windows Domain Account Enumeration - Metasploit


This page contains detailed information about how to use the auxiliary/admin/mssql/mssql_enum_domain_accounts metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.

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Module Overview

Name: Microsoft SQL Server SUSER_SNAME Windows Domain Account Enumeration
Module: auxiliary/admin/mssql/mssql_enum_domain_accounts
Source code: modules/auxiliary/admin/mssql/mssql_enum_domain_accounts.rb
Disclosure date: -
Last modification time: 2020-09-22 02:56:51 +0000
Supported architecture(s): -
Supported platform(s): -
Target service / protocol: ms-sql2000, ms-sql-s, sybase
Target network port(s): 1433, 1434, 1435, 2533, 2638, 9152, 14330
List of CVEs: -

This module can be used to bruteforce RIDs associated with the domain of the SQL Server using the SUSER_SNAME function. This is similar to the smb_lookupsid module, but executed through SQL Server queries as any user with the PUBLIC role (everyone). Information that can be enumerated includes Windows domain users, groups, and computer accounts. Enumerated accounts can then be used in online dictionary attacks.

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 auxiliary/admin/mssql/mssql_enum_domain_accounts
msf auxiliary(mssql_enum_domain_accounts) > show targets
    ... a list of targets ...
msf auxiliary(mssql_enum_domain_accounts) > set TARGET target-id
msf auxiliary(mssql_enum_domain_accounts) > show options
    ... show and set options ...
msf auxiliary(mssql_enum_domain_accounts) > exploit

Required Options

  • RHOSTS: The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'

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Msfconsole Usage

Here is how the admin/mssql/mssql_enum_domain_accounts auxiliary module looks in the msfconsole:

msf6 > use auxiliary/admin/mssql/mssql_enum_domain_accounts

msf6 auxiliary(admin/mssql/mssql_enum_domain_accounts) > show info

       Name: Microsoft SQL Server SUSER_SNAME Windows Domain Account Enumeration
     Module: auxiliary/admin/mssql/mssql_enum_domain_accounts
    License: Metasploit Framework License (BSD)
       Rank: Normal

Provided by:
  nullbind <[email protected]>
  antti <[email protected]>

Check supported:
  No

Basic options:
  Name                 Current Setting  Required  Description
  ----                 ---------------  --------  -----------
  FuzzNum              10000            yes       Number of principal_ids to fuzz.
  PASSWORD                              no        The password for the specified username
  RHOSTS                                yes       The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
  RPORT                1433             yes       The target port (TCP)
  TDSENCRYPTION        false            yes       Use TLS/SSL for TDS data "Force Encryption"
  USERNAME             sa               no        The username to authenticate as
  USE_WINDOWS_AUTHENT  false            yes       Use windows authentification (requires DOMAIN option set)

Description:
  This module can be used to bruteforce RIDs associated with the 
  domain of the SQL Server using the SUSER_SNAME function. This is 
  similar to the smb_lookupsid module, but executed through SQL Server 
  queries as any user with the PUBLIC role (everyone). Information 
  that can be enumerated includes Windows domain users, groups, and 
  computer accounts. Enumerated accounts can then be used in online 
  dictionary attacks.

References:
  http://msdn.microsoft.com/en-us/library/ms174427.aspx

Module Options

This is a complete list of options available in the admin/mssql/mssql_enum_domain_accounts auxiliary module:

msf6 auxiliary(admin/mssql/mssql_enum_domain_accounts) > show options

Module options (auxiliary/admin/mssql/mssql_enum_domain_accounts):

   Name                 Current Setting  Required  Description
   ----                 ---------------  --------  -----------
   FuzzNum              10000            yes       Number of principal_ids to fuzz.
   PASSWORD                              no        The password for the specified username
   RHOSTS                                yes       The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
   RPORT                1433             yes       The target port (TCP)
   TDSENCRYPTION        false            yes       Use TLS/SSL for TDS data "Force Encryption"
   USERNAME             sa               no        The username to authenticate as
   USE_WINDOWS_AUTHENT  false            yes       Use windows authentification (requires DOMAIN option set)

Advanced Options

Here is a complete list of advanced options supported by the admin/mssql/mssql_enum_domain_accounts auxiliary module:

msf6 auxiliary(admin/mssql/mssql_enum_domain_accounts) > show advanced

Module advanced options (auxiliary/admin/mssql/mssql_enum_domain_accounts):

   Name                    Current Setting                                                       Required  Description
   ----                    ---------------                                                       --------  -----------
   CHOST                                                                                         no        The local client address
   CPORT                                                                                         no        The local client port
   ConnectTimeout          10                                                                    yes       Maximum number of seconds to establish a TCP connection
   DOMAIN                  WORKSTATION                                                           yes       The domain to use for windows authentication
   HEX2BINARY              /opt/metasploit-framework/embedded/framework/data/exploits/mssql/h2b  no        The path to the hex2binary script on the disk
   NTLM::SendLM            true                                                                  yes       Always send the LANMAN response (except when NTLMv2_session is specified)
   NTLM::SendNTLM          true                                                                  yes       Activate the 'Negotiate NTLM key' flag, indicating the use of NTLM responses
   NTLM::SendSPN           true                                                                  yes       Send an avp of type SPN in the ntlmv2 client blob, this allows authentication on Windows 7+/Server 2008 R2+ when SPN is required
   NTLM::UseLMKey          false                                                                 yes       Activate the 'Negotiate Lan Manager Key' flag, using the LM key when the LM response is sent
   NTLM::UseNTLM2_session  true                                                                  yes       Activate the 'Negotiate NTLM2 key' flag, forcing the use of a NTLMv2_session
   NTLM::UseNTLMv2         true                                                                  yes       Use NTLMv2 instead of NTLM2_session when 'Negotiate NTLM2' key is true
   Proxies                                                                                       no        A proxy chain of format type:host:port[,type:host:port][...]
   SSL                     false                                                                 no        Negotiate SSL/TLS for outgoing connections
   SSLCipher                                                                                     no        String for SSL cipher - "DHE-RSA-AES256-SHA" or "ADH"
   SSLVerifyMode           PEER                                                                  no        SSL verification method (Accepted: CLIENT_ONCE, FAIL_IF_NO_PEER_CERT, NONE, PEER)
   SSLVersion              Auto                                                                  yes       Specify the version of SSL/TLS to be used (Auto, TLS and SSL23 are auto-negotiate) (Accepted: Auto, TLS, SSL23, SSL3, TLS1, TLS1.1, TLS1
                                                                                                           .2)
   VERBOSE                 false                                                                 no        Enable detailed status messages
   WORKSPACE                                                                                     no        Specify the workspace for this module

Auxiliary Actions

This is a list of all auxiliary actions that the admin/mssql/mssql_enum_domain_accounts module can do:

msf6 auxiliary(admin/mssql/mssql_enum_domain_accounts) > show actions

Auxiliary actions:

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

Evasion Options

Here is the full list of possible evasion options supported by the admin/mssql/mssql_enum_domain_accounts auxiliary module in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):

msf6 auxiliary(admin/mssql/mssql_enum_domain_accounts) > show evasion

Module evasion options:

   Name                Current Setting  Required  Description
   ----                ---------------  --------  -----------
   TCP::max_send_size  0                no        Maxiumum tcp segment size.  (0 = disable)
   TCP::send_delay     0                no        Delays inserted before every send.  (0 = disable)

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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.

Login was unsuccessful. Check your credentials.

Here is a relevant code snippet related to the "Login was unsuccessful. Check your credentials." error message:

37:	    # Check connection and issue initial query
38:	    print_status("Attempting to connect to the database server at #{rhost}:#{rport} as #{datastore['USERNAME']}...")
39:	    if mssql_login_datastore
40:	      print_good('Connected.')
41:	    else
42:	      print_error('Login was unsuccessful. Check your credentials.')
43:	      disconnect
44:	      return
45:	    end
46:	
47:	    # Get the server name

Could not recover the SQL Server's domain.

Here is a relevant code snippet related to the "Could not recover the SQL Server's domain." error message:

49:	    print_status("SQL Server Name: #{sql_server_name}")
50:	
51:	    # Get the domain name
52:	    sql_server_domain = get_windows_domain
53:	    if sql_server_domain.nil?
54:	      print_error("Could not recover the SQL Server's domain.")
55:	      disconnect
56:	      return
57:	    else
58:	      print_status("Domain Name: #{sql_server_domain}")
59:	    end

The SQL Server does not appear to be part of a Windows domain.

Here is a relevant code snippet related to the "The SQL Server does not appear to be part of a Windows domain." error message:

58:	      print_status("Domain Name: #{sql_server_domain}")
59:	    end
60:	
61:	    # Check if the domain and hostname are the same
62:	    if sql_server_name == sql_server_domain
63:	      print_error("The SQL Server does not appear to be part of a Windows domain.")
64:	      disconnect
65:	      return
66:	    end
67:	
68:	    # Get the base sid for the domain

Could not recover the SQL Server's domain sid.

Here is a relevant code snippet related to the "Could not recover the SQL Server's domain sid." error message:

66:	    end
67:	
68:	    # Get the base sid for the domain
69:	    windows_domain_sid = get_windows_domain_sid(sql_server_domain)
70:	    if windows_domain_sid.nil?
71:	      print_error("Could not recover the SQL Server's domain sid.")
72:	      disconnect
73:	      return
74:	    else
75:	      print_good("Found the domain sid: #{windows_domain_sid}")
76:	    end

Sorry, no Windows domain accounts were found, or DC could not be contacted.

Here is a relevant code snippet related to the "Sorry, no Windows domain accounts were found, or DC could not be contacted." error message:

80:	    win_domain_user_list = get_win_domain_users(windows_domain_sid)
81:	
82:	    disconnect
83:	
84:	    if win_domain_user_list.nil? || win_domain_user_list.empty?
85:	      print_error('Sorry, no Windows domain accounts were found, or DC could not be contacted.')
86:	      return
87:	    end
88:	
89:	    # Print number of objects found and write to a file
90:	    print_good("#{win_domain_user_list.length} user accounts, groups, and computer accounts were found.")

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References

See Also

Check also the following modules related to this module:

Authors

  • nullbind <scott.sutherland[at]netspi.com>
  • antti <antti.rantasaari[at]netspi.com>

Version

This page has been produced using Metasploit Framework version 6.1.27-dev. For more modules, visit the Metasploit Module Library.

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