2009-03-26 14:55:53 +00:00
|
|
|
##
|
2014-10-17 16:47:33 +00:00
|
|
|
# This module requires Metasploit: http://metasploit.com/download
|
2013-10-15 18:50:46 +00:00
|
|
|
# Current source: https://github.com/rapid7/metasploit-framework
|
2009-03-26 14:55:53 +00:00
|
|
|
##
|
|
|
|
|
|
|
|
require 'msf/core'
|
|
|
|
|
|
|
|
class Metasploit3 < Msf::Auxiliary
|
|
|
|
|
2013-08-30 21:28:54 +00:00
|
|
|
include Msf::Exploit::Capture
|
|
|
|
include Msf::Auxiliary::Report
|
|
|
|
include Msf::Auxiliary::Scanner
|
|
|
|
|
|
|
|
def initialize
|
|
|
|
super(
|
|
|
|
'Name' => 'TCP SYN Port Scanner',
|
|
|
|
'Description' => %q{
|
|
|
|
Enumerate open TCP services using a raw SYN scan.
|
|
|
|
},
|
|
|
|
'Author' => 'kris katterjohn',
|
|
|
|
'License' => MSF_LICENSE
|
|
|
|
)
|
|
|
|
|
|
|
|
register_options([
|
|
|
|
OptString.new('PORTS', [true, "Ports to scan (e.g. 22-25,80,110-900)", "1-10000"]),
|
|
|
|
OptInt.new('TIMEOUT', [true, "The reply read timeout in milliseconds", 500]),
|
|
|
|
OptInt.new('BATCHSIZE', [true, "The number of hosts to scan per set", 256]),
|
|
|
|
OptString.new('INTERFACE', [false, 'The name of the interface'])
|
|
|
|
], self.class)
|
|
|
|
|
|
|
|
deregister_options('FILTER','PCAPFILE')
|
|
|
|
end
|
|
|
|
|
|
|
|
# No IPv6 support yet
|
|
|
|
def support_ipv6?
|
|
|
|
false
|
|
|
|
end
|
|
|
|
|
|
|
|
def run_batch_size
|
|
|
|
datastore['BATCHSIZE'] || 256
|
|
|
|
end
|
|
|
|
|
|
|
|
def run_batch(hosts)
|
|
|
|
open_pcap
|
|
|
|
|
|
|
|
pcap = self.capture
|
|
|
|
|
|
|
|
ports = Rex::Socket.portspec_crack(datastore['PORTS'])
|
|
|
|
|
|
|
|
if ports.empty?
|
2013-12-18 21:04:53 +00:00
|
|
|
raise Msf::OptionValidateError.new(['PORTS'])
|
2013-08-30 21:28:54 +00:00
|
|
|
end
|
|
|
|
|
|
|
|
to = (datastore['TIMEOUT'] || 500).to_f / 1000.0
|
|
|
|
|
2015-09-27 20:54:11 +00:00
|
|
|
# we copy the hosts because some may not be reachable and need to be ejected
|
|
|
|
host_queue = hosts.dup
|
2013-08-30 21:28:54 +00:00
|
|
|
# Spread the load across the hosts
|
|
|
|
ports.each do |dport|
|
2015-09-27 20:54:11 +00:00
|
|
|
host_queue.each do |dhost|
|
2013-08-30 21:28:54 +00:00
|
|
|
shost, sport = getsource(dhost)
|
|
|
|
|
|
|
|
self.capture.setfilter(getfilter(shost, sport, dhost, dport))
|
|
|
|
|
|
|
|
begin
|
|
|
|
probe = buildprobe(shost, sport, dhost, dport)
|
|
|
|
|
2015-09-27 20:54:11 +00:00
|
|
|
unless capture_sendto(probe, dhost)
|
|
|
|
host_queue.delete(dhost)
|
|
|
|
next
|
|
|
|
end
|
2013-08-30 21:28:54 +00:00
|
|
|
|
|
|
|
reply = probereply(self.capture, to)
|
|
|
|
|
|
|
|
next if not reply
|
|
|
|
|
|
|
|
if (reply.is_tcp? and reply.tcp_flags.syn == 1 and reply.tcp_flags.ack == 1)
|
|
|
|
print_status(" TCP OPEN #{dhost}:#{dport}")
|
|
|
|
report_service(:host => dhost, :port => dport)
|
|
|
|
end
|
|
|
|
rescue ::Exception
|
|
|
|
print_error("Error: #{$!.class} #{$!}")
|
|
|
|
end
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
|
|
|
close_pcap
|
|
|
|
end
|
|
|
|
|
|
|
|
def getfilter(shost, sport, dhost, dport)
|
|
|
|
# Look for associated SYN/ACKs and RSTs
|
|
|
|
"tcp and (tcp[13] == 0x12 or (tcp[13] & 0x04) != 0) and " +
|
|
|
|
"src host #{dhost} and src port #{dport} and " +
|
|
|
|
"dst host #{shost} and dst port #{sport}"
|
|
|
|
end
|
|
|
|
|
|
|
|
def getsource(dhost)
|
|
|
|
# srcip, srcport
|
|
|
|
[ Rex::Socket.source_address(dhost), rand(0xffff - 1025) + 1025 ]
|
|
|
|
end
|
|
|
|
|
|
|
|
def buildprobe(shost, sport, dhost, dport)
|
|
|
|
p = PacketFu::TCPPacket.new
|
|
|
|
p.ip_saddr = shost
|
|
|
|
p.ip_daddr = dhost
|
|
|
|
p.tcp_sport = sport
|
|
|
|
p.tcp_flags.ack = 0
|
|
|
|
p.tcp_flags.syn = 1
|
|
|
|
p.tcp_dport = dport
|
|
|
|
p.tcp_win = 3072
|
|
|
|
p.recalc
|
|
|
|
p
|
|
|
|
end
|
|
|
|
|
|
|
|
def probereply(pcap, to)
|
|
|
|
reply = nil
|
|
|
|
begin
|
|
|
|
Timeout.timeout(to) do
|
|
|
|
pcap.each do |r|
|
|
|
|
pkt = PacketFu::Packet.parse(r)
|
|
|
|
next unless pkt.is_tcp?
|
|
|
|
reply = pkt
|
|
|
|
break
|
|
|
|
end
|
|
|
|
end
|
|
|
|
rescue Timeout::Error
|
|
|
|
end
|
|
|
|
return reply
|
|
|
|
end
|
2011-07-26 01:29:21 +00:00
|
|
|
|
2009-03-26 14:55:53 +00:00
|
|
|
end
|