Windows Manage Local NBD Server for Remote Disks - Metasploit

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

Module Overview

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Name: Windows Manage Local NBD Server for Remote Disks
Module: post/windows/manage/nbd_server
Source code: modules/post/windows/manage/nbd_server.rb
Disclosure date: -
Last modification time: 2021-10-06 13:43:31 +0000
Supported architecture(s): -
Supported platform(s): Windows
Target service / protocol: -
Target network port(s): -
List of CVEs: -

Maps remote disks and logical volumes to a local Network Block Device server. Allows for forensic tools to be executed on the remote disk directly.

Module Ranking and Traits

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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

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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/manage/nbd_server

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/manage/nbd_server
msf post(nbd_server) > show options
    ... show and set options ...
msf post(nbd_server) > set SESSION session-id
msf post(nbd_server) > 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/manage/nbd_server")
  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

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• SESSION: The session to run this module on.

• DEVICE: Device to map (use enum_drives for possible names)

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Msfconsole Usage

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Here is how the windows/manage/nbd_server post exploitation module looks in the msfconsole:

msf6 > use post/windows/manage/nbd_server

msf6 post(windows/manage/nbd_server) > show info

       Name: Windows Manage Local NBD Server for Remote Disks
     Module: post/windows/manage/nbd_server
   Platform: Windows
       Arch: 
       Rank: Normal

Provided by:
  Wesley McGrew <[email protected]>

Compatible session types:
  Meterpreter

Basic options:
  Name     Current Setting  Required  Description
  ----     ---------------  --------  -----------
  DEVICE                    yes       Device to map (use enum_drives for possible names)
  NBDIP    0.0.0.0          no        IP address for NBD server
  NBDPORT  10005            no        TCP port for NBD server
  SESSION                   yes       The session to run this module on.

Description:
  Maps remote disks and logical volumes to a local Network Block 
  Device server. Allows for forensic tools to be executed on the 
  remote disk directly.

Module Options

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

msf6 post(windows/manage/nbd_server) > show options

Module options (post/windows/manage/nbd_server):

   Name     Current Setting  Required  Description
   ----     ---------------  --------  -----------
   DEVICE                    yes       Device to map (use enum_drives for possible names)
   NBDIP    0.0.0.0          no        IP address for NBD server
   NBDPORT  10005            no        TCP port for NBD server
   SESSION                   yes       The session to run this module on.

Advanced Options

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

msf6 post(windows/manage/nbd_server) > show advanced

Module advanced options (post/windows/manage/nbd_server):

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

Post Actions

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

msf6 post(windows/manage/nbd_server) > show actions

Post actions:

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

Evasion Options

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

msf6 post(windows/manage/nbd_server) > show evasion

Module evasion options:

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

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Error Messages

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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.

GetLastError

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

53:	                                            0x3, nil, "OPEN_EXISTING", "FILE_ATTRIBUTE_READONLY", 0)
54:	    handle = r['return']
55:	    r = client.railgun.kernel32.DeviceIoControl(handle, fsctl_allow_extended_dasd_io, nil, 0, 0, 0, 4, nil)
56:	    ioctl = client.railgun.kernel32.DeviceIoControl(handle, ioctl_disk_get_drive_geometry_ex,
57:	                                                    "", 0, 200, 200, 4, "")
58:	    if ioctl['GetLastError'] == 6
59:	      ioctl = client.railgun.kernel32.DeviceIoControl(handle, ioctl_disk_get_drive_geometry_ex,
60:	                                                      "", 0, 200, 200, 4, "")
61:	    end
62:	    geometry = ioctl['lpOutBuffer']
63:	    disk_size = geometry[24, 31].unpack('Q')[0]

No data received

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Here is a relevant code snippet related to the "No data received" error message:

79:	
80:	    while true
81:	      request = rsock.read(28)
82:	
83:	      unless request
84:	        print_error("No data received")
85:	        break
86:	      end
87:	
88:	      magic, request, nbd_handle, offset_n, length = request.unpack("NNa8a8N")
89:	

Wrong magic number

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Here is a relevant code snippet related to the "Wrong magic number" error message:

86:	      end
87:	
88:	      magic, request, nbd_handle, offset_n, length = request.unpack("NNa8a8N")
89:	
90:	      if magic != 0x25609513
91:	        print_error("Wrong magic number")
92:	        break
93:	      end
94:	      if request == 2
95:	        break
96:	      end

Attempted write on a read-only nbd

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Here is a relevant code snippet related to the "Attempted write on a read-only nbd" error message:

94:	      if request == 2
95:	        break
96:	      end
97:	
98:	      if request == 1
99:	        print_error("Attempted write on a read-only nbd")
100:	        break
101:	      end
102:	      if request == 0
103:	        client.railgun.kernel32.SetFilePointer(handle, offset_n[4, 7].unpack('N')[0],
104:	                                               offset_n[0, 4].unpack('N')[0], 0)

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Related Pull Requests

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• #8338 Merged Pull Request: Fix msf/core and self.class msftidy warnings
• #6655 Merged Pull Request: use MetasploitModule as a class name
• #6648 Merged Pull Request: Change metasploit class names
• #6243 Merged Pull Request: Fix #6242, Check nil for sock.read
• #2525 Merged Pull Request: Change module boilerplate
• #1241 Merged Pull Request: Removed all $Id$ and $Revision$ occurences
• #958 Merged Pull Request: Msftidy 2

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See Also

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Check also the following modules related to this module:

• post/windows/manage/add_user
• post/windows/manage/archmigrate
• post/windows/manage/change_password
• post/windows/manage/clone_proxy_settings
• post/windows/manage/delete_user
• post/windows/manage/dell_memory_protect
• post/windows/manage/download_exec
• post/windows/manage/driver_loader
• post/windows/manage/enable_rdp
• post/windows/manage/enable_support_account
• post/windows/manage/exec_powershell
• post/windows/manage/execute_dotnet_assembly
• post/windows/manage/forward_pageant
• post/windows/manage/hashcarve
• post/windows/manage/ie_proxypac
• post/windows/manage/inject_ca
• post/windows/manage/inject_host
• post/windows/manage/install_python
• post/windows/manage/install_ssh
• post/windows/manage/killav
• post/windows/manage/migrate
• post/windows/manage/mssql_local_auth_bypass
• post/windows/manage/multi_meterpreter_inject
• post/windows/manage/peinjector
• post/windows/manage/persistence_exe
• post/windows/manage/portproxy
• post/windows/manage/pptp_tunnel
• post/windows/manage/priv_migrate
• post/windows/manage/pxeexploit
• post/windows/manage/reflective_dll_inject
• post/windows/manage/remove_ca
• post/windows/manage/remove_host
• post/windows/manage/rid_hijack
• post/windows/manage/rollback_defender_signatures
• post/windows/manage/rpcapd_start
• post/windows/manage/run_as
• post/windows/manage/run_as_psh
• post/windows/manage/sdel
• post/windows/manage/shellcode_inject
• post/windows/manage/sshkey_persistence
• post/windows/manage/sticky_keys
• post/windows/manage/vmdk_mount
• post/windows/manage/vss
• post/windows/manage/vss_create
• post/windows/manage/vss_list
• post/windows/manage/vss_mount
• post/windows/manage/vss_set_storage
• post/windows/manage/vss_storage
• post/windows/manage/wdigest_caching
• post/windows/manage/webcam

Authors

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• Wesley McGrew <wesley[at]mcgrewsecurity.com>

Version

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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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