SMB Negotiate Dialect Corruption - Metasploit


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

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Module Overview

Name: SMB Negotiate Dialect Corruption
Module: auxiliary/fuzzers/smb/smb_negotiate_corrupt
Source code: modules/auxiliary/fuzzers/smb/smb_negotiate_corrupt.rb
Disclosure date: -
Last modification time: 2017-08-24 21:38:44 +0000
Supported architecture(s): -
Supported platform(s): -
Target service / protocol: -
Target network port(s): 445
List of CVEs: -

This module sends a series of SMB negotiate requests with corrupted bytes

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/fuzzers/smb/smb_negotiate_corrupt
msf auxiliary(smb_negotiate_corrupt) > show targets
    ... a list of targets ...
msf auxiliary(smb_negotiate_corrupt) > set TARGET target-id
msf auxiliary(smb_negotiate_corrupt) > show options
    ... show and set options ...
msf auxiliary(smb_negotiate_corrupt) > 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 fuzzers/smb/smb_negotiate_corrupt auxiliary module looks in the msfconsole:

msf6 > use auxiliary/fuzzers/smb/smb_negotiate_corrupt

msf6 auxiliary(fuzzers/smb/smb_negotiate_corrupt) > show info

       Name: SMB Negotiate Dialect Corruption
     Module: auxiliary/fuzzers/smb/smb_negotiate_corrupt
    License: Metasploit Framework License (BSD)
       Rank: Normal

Provided by:
  hdm <[email protected]>

Check supported:
  No

Basic options:
  Name      Current Setting  Required  Description
  ----      ---------------  --------  -----------
  MAXDEPTH                   no        Specify a maximum byte depth to test
  RHOSTS                     yes       The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
  RPORT     445              yes       The target port (TCP)

Description:
  This module sends a series of SMB negotiate requests with corrupted 
  bytes

Module Options

This is a complete list of options available in the fuzzers/smb/smb_negotiate_corrupt auxiliary module:

msf6 auxiliary(fuzzers/smb/smb_negotiate_corrupt) > show options

Module options (auxiliary/fuzzers/smb/smb_negotiate_corrupt):

   Name      Current Setting  Required  Description
   ----      ---------------  --------  -----------
   MAXDEPTH                   no        Specify a maximum byte depth to test
   RHOSTS                     yes       The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
   RPORT     445              yes       The target port (TCP)

Advanced Options

Here is a complete list of advanced options supported by the fuzzers/smb/smb_negotiate_corrupt auxiliary module:

msf6 auxiliary(fuzzers/smb/smb_negotiate_corrupt) > show advanced

Module advanced options (auxiliary/fuzzers/smb/smb_negotiate_corrupt):

   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
   FuzzChar        X                yes       Sets the character to use for generating long strings
   FuzzTracer      MSFROCKS         yes       Sets the magic string to embed into fuzzer string inputs
   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 fuzzers/smb/smb_negotiate_corrupt module can do:

msf6 auxiliary(fuzzers/smb/smb_negotiate_corrupt) > show actions

Auxiliary actions:

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

Evasion Options

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

msf6 auxiliary(fuzzers/smb/smb_negotiate_corrupt) > 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.

The service may have crashed: iteration:<VALUE> method=<LAST_INP> string=<VALUE> error=<LAST_ERR>

Here is a relevant code snippet related to the "The service may have crashed: iteration:<VALUE> method=<LAST_INP> string=<VALUE> error=<LAST_ERR>" error message:

61:	        disconnect
62:	      end
63:	
64:	      if(not @connected)
65:	        if(last_str)
66:	          print_status("The service may have crashed: iteration:#{cnt-1} method=#{last_inp} string=#{last_str.unpack("H*")[0]} error=#{last_err}")
67:	        else
68:	          print_status("Could not connect to the service: #{last_err}")
69:	        end
70:	        return
71:	      end

Could not connect to the service: <LAST_ERR>

Here is a relevant code snippet related to the "Could not connect to the service: <LAST_ERR>" error message:

63:	
64:	      if(not @connected)
65:	        if(last_str)
66:	          print_status("The service may have crashed: iteration:#{cnt-1} method=#{last_inp} string=#{last_str.unpack("H*")[0]} error=#{last_err}")
67:	        else
68:	          print_status("Could not connect to the service: #{last_err}")
69:	        end
70:	        return
71:	      end
72:	
73:	      last_str = str

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See Also

Check also the following modules related to this module:

Authors

  • hdm

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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