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@ -13,8 +13,8 @@ module Msf
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#
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###
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class Exploit
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module Capture
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class Exploit
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module Capture
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#
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# Initializes an instance of an exploit module that captures traffic
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@ -53,20 +53,28 @@ module Capture
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@pcaprub_error = e
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end
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begin
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require 'network_interface'
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@network_interface_loaded = true
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rescue ::Exception => e
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@network_interface_loaded = false
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@network_interface_error = e
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end
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end
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def stats_recv(pcap=self.capture)
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return(0) if not pcap
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return(0) unless pcap
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pcap.stats['recv']
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end
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def stats_drop(pcap=self.capture)
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return(0) if not pcap
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return(0) unless pcap
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pcap.stats['drop']
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end
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def stats_ifdrop(pcap=self.capture)
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return(0) if not pcap
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return(0) unless pcap
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pcap.stats['ifdrop']
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end
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@ -94,8 +102,8 @@ module Capture
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# Look for a PCAP file
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cap = datastore['PCAPFILE'] || ''
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if(not cap.empty?)
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if(not File.exists?(cap))
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if (not cap.empty?)
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if (not File.exists?(cap))
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raise RuntimeError, "The PCAP file #{cap} could not be found"
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end
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self.capture = ::Pcap.open_offline(cap)
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@ -125,7 +133,7 @@ module Capture
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end
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def close_pcap
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return if not self.capture
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return unless self.capture
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self.capture = nil
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self.arp_capture = nil
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GC.start()
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@ -139,9 +147,9 @@ module Capture
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while (idx < raw.length)
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len = raw[idx+1]
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return set if not len
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set[ raw[idx] ] ||= []
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set[ raw[idx] ].push(raw[idx + 2, len])
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return set unless len
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set[raw[idx]] ||= []
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set[raw[idx]].push(raw[idx + 2, len])
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idx += len + 2
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end
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@ -153,7 +161,7 @@ module Capture
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# signal handling of Ruby 1.9
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#
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def each_packet
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return if not capture
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return unless capture
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begin
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@capture_count = 0
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reader = framework.threads.spawn("PcapReceiver", false) do
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@ -175,7 +183,7 @@ module Capture
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# Injects a packet on the wire. For all injection-related functions, it's
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# on the module to open up a capture device first (this way, we don't
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# needlessly spawn new capture devices).
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def inject(pkt="",pcap=self.capture)
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def inject(pkt="", pcap=self.capture)
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check_pcaprub_loaded
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if not pcap
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raise RuntimeError, "Could not access the capture process (remember to open_pcap first!)"
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@ -205,20 +213,20 @@ module Capture
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p.payload = payload.to_s
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end
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end
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inject p.to_s,pcap
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inject p.to_s, pcap
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end
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def inject_pcap(pcap_file, filter=nil, delay = 0, pcap=self.capture)
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check_pcaprub_loaded
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if not pcap
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unless pcap
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raise RuntimeError, "Could not access the capture process (remember to open_pcap first!)"
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end
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if(not File.exists?(pcap_file))
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if (not File.exists?(pcap_file))
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raise RuntimeError, "The PCAP file #{pcap_file} could not be found"
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end
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if(pcap_file.empty?)
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if (pcap_file.empty?)
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raise RuntimeError, "The PCAP file #{pcap_file} is empty"
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end
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@ -226,7 +234,7 @@ module Capture
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capture_file.setfilter(filter) if filter
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while (pkt = capture_file.next) do
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pcap.inject(pkt)
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Kernel.select(nil, nil, nil, (delay * 1.0)/1000)
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Rex.sleep((delay * 1.0)/1000)
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end
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GC.start
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end
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@ -239,7 +247,7 @@ module Capture
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raise RuntimeError, "Could not access the capture process (remember to open_pcap first!)" unless self.capture
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raise RuntimeError, "Must specify a host to sendto" unless dhost
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dev ||= datastore['INTERFACE']
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dst_mac,src_mac = lookup_eth(dhost,dev)
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dst_mac, src_mac = lookup_eth(dhost, dev)
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if dst_mac == nil and not bcast
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return false
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end
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@ -247,7 +255,7 @@ module Capture
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end
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# The return value either be a PacketFu::Packet object, or nil
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def inject_reply(proto=:udp,pcap=self.capture)
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def inject_reply(proto=:udp, pcap=self.capture)
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reply = nil
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to = (datastore['TIMEOUT'] || 500).to_f / 1000.0
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if not pcap
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@ -257,7 +265,7 @@ module Capture
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::Timeout.timeout(to) do
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pcap.each do |r|
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packet = PacketFu::Packet.parse(r)
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next unless packet.proto.map {|x| x.downcase.to_sym}.include? proto
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next unless packet.proto.map { |x| x.downcase.to_sym }.include? proto
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reply = packet
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break
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end
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@ -274,8 +282,8 @@ module Capture
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# do inject and capture packets, and will always first fire off a
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# UDP packet using the regular socket to learn the source host's
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# and gateway's mac addresses.
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def lookup_eth(addr=nil,iface=nil)
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raise RuntimeError, "Could not access the capture process." if not self.arp_capture
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def lookup_eth(addr=nil, iface=nil)
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raise RuntimeError, "Could not access the capture process." unless self.arp_capture
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self.arp_cache ||= {}
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self.dst_cache ||= {}
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@ -293,7 +301,7 @@ module Capture
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dst_mac = self.arp_cache[:gateway]
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end
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self.dst_cache[addr] = [dst_mac,src_mac]
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self.dst_cache[addr] = [dst_mac, src_mac]
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end
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def probe_gateway(addr)
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@ -301,15 +309,15 @@ module Capture
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dst_port = rand(30000)+1024
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preamble = [datastore['UDP_SECRET']].pack("N")
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secret = "#{preamble}#{Rex::Text.rand_text(rand(0xff)+1)}"
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UDPSocket.open.send(secret,0,dst_host,dst_port)
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UDPSocket.open.send(secret, 0, dst_host, dst_port)
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begin
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to = (datastore['TIMEOUT'] || 1500).to_f / 1000.0
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::Timeout.timeout(to) do
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while(my_packet = inject_reply(:udp,self.arp_capture))
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while (my_packet = inject_reply(:udp, self.arp_capture))
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if my_packet.payload == secret
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dst_mac = self.arp_cache[:gateway] = my_packet.eth_daddr
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src_mac = self.arp_cache[Rex::Socket.source_address(addr)] = my_packet.eth_saddr
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return [dst_mac,src_mac]
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return [dst_mac, src_mac]
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else
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next
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end
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@ -328,8 +336,8 @@ module Capture
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return self.arp_cache[target_ip] if self.arp_cache[target_ip]
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return self.arp_cache[:gateway] unless should_arp? target_ip
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source_ip = Rex::Socket.source_address(target_ip)
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raise RuntimeError, "Could not access the capture process." if not self.arp_capture
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p = arp_packet(target_ip,source_ip)
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raise RuntimeError, "Could not access the capture process." unless self.arp_capture
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p = arp_packet(target_ip, source_ip)
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inject_eth(:eth_type => 0x0806,
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:payload => p,
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:pcap => self.arp_capture,
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@ -338,7 +346,7 @@ module Capture
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begin
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to = (datastore['TIMEOUT'] || 500).to_f / 1000.0
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::Timeout.timeout(to) do
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while(my_packet = inject_reply(:arp,self.arp_capture))
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while (my_packet = inject_reply(:arp, self.arp_capture))
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if my_packet.arp_saddr_ip == target_ip
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self.arp_cache[target_ip] = my_packet.eth_saddr
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return self.arp_cache[target_ip]
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@ -352,7 +360,7 @@ module Capture
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end
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# Creates a full ARP packet, mainly for use with inject_eth()
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def arp_packet(target_ip=nil,source_ip=nil)
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def arp_packet(target_ip=nil, source_ip=nil)
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p = PacketFu::ARPPacket.new
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p.arp_opcode = 1
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p.arp_daddr_ip = target_ip || datastore['RHOST']
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@ -376,6 +384,9 @@ module Capture
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if not @pcaprub_loaded
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print_status("The Pcaprub module is not available: #{@pcaprub_error}")
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raise RuntimeError, "Pcaprub not available"
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elsif not @network_interface_loaded
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print_status("The NetworkInterface module is not available: #{@network_interface_error}")
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raise RuntimeError, "NetworkInterface not available"
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else
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true
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end
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@ -406,29 +417,24 @@ module Capture
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#Netifaces code
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# netifaces code is not available in pcaprub 0.9.2 and prior,
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# which is going to be installed in a lot of places. Modules
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# which want it should check explicitly for it. TODO: Bug upstream
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# to release it for real in 0.9.3
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def netifaces_implemented?
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@pcaprub_loaded and
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Pcap.respond_to?(:lookupaddrs) and
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Pcap.respond_to?(:interfaces) and
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Pcap.respond_to?(:addresses)
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@network_interface_loaded and
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NetworkInterface.respond_to?(:interfaces) and
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NetworkInterface.respond_to?(:addresses)
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end
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def list_interfaces
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check_pcaprub_loaded
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Pcap.interfaces
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NetworkInterface.interfaces
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end
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def is_interface?(dev)
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check_pcaprub_loaded
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if RUBY_PLATFORM == "i386-mingw32"
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if dev =~ /\\Device\\NPF_\{[A-F0-9]{8}-[A-F0-9]{4}-[A-F0-9]{4}-[A-F0-9]{4}-[A-F0-9]{12}\}/
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return Pcap.interfaces.include?(dev)
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return NetworkInterface.interfaces.include?(dev)
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elsif dev.to_s =~ /^[0-9]{1,2}$/
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if (dev.to_i <= Pcap.interfaces.length) and (dev.to_i >= 0)
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if (dev.to_i <= NetworkInterface.interfaces.length) and (dev.to_i >= 0)
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return true
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else
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return false
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@ -437,7 +443,7 @@ module Capture
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return false
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end
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else
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return Pcap.interfaces.include?(dev)
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return NetworkInterface.interfaces.include?(dev)
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end
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end
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@ -447,7 +453,7 @@ module Capture
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if RUBY_PLATFORM == "i386-mingw32"
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if dev.to_s =~ /^[0-9]{1,2}$/
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if is_interface?(dev)
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Pcap.interfaces[(dev.to_i) - 1]
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NetworkInterface.interfaces[(dev.to_i) - 1]
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else
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return dev
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end
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@ -462,90 +468,90 @@ module Capture
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def get_mac(dev)
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check_pcaprub_loaded
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dev = get_interface_guid(dev)
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addrs = Pcap.addresses(dev)
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addrs = NetworkInterface.addresses(dev)
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raise RuntimeError, "Interface #{dev} does not exist" if !addrs
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raise RuntimeError, "Can not get mac address for interface #{dev}" if !addrs[Pcap::AF_LINK][0]['addr']
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addrs[Pcap::AF_LINK][0]['addr']
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raise RuntimeError, "Can not get mac address for interface #{dev}" if !addrs[NetworkInterface::AF_LINK][0]['addr']
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addrs[NetworkInterface::AF_LINK][0]['addr']
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end
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def get_ipv4_addr_count(dev)
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check_pcaprub_loaded
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dev = get_interface_guid(dev)
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addrs = Pcap.addresses(dev)
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addrs = NetworkInterface.addresses(dev)
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raise RuntimeError, "Interface #{dev} does not exist" if !addrs
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addrs[Pcap::AF_INET].length
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addrs[NetworkInterface::AF_INET].length
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end
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def get_ipv4_addr(dev, num=0)
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check_pcaprub_loaded
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dev = get_interface_guid(dev)
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addrs = Pcap.addresses(dev)
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addrs = NetworkInterface.addresses(dev)
|
|
|
|
|
raise RuntimeError, "Interface #{dev} do not exists" if !addrs
|
|
|
|
|
raise RuntimeError, "Interface #{dev} do not have an ipv4 address at position #{num}" if addrs[Pcap::AF_INET].length < num + 1
|
|
|
|
|
raise RuntimeError, "Can not get the IPv4 address for interface #{dev}" if !addrs[Pcap::AF_INET][num]['addr']
|
|
|
|
|
addrs[Pcap::AF_INET][num]['addr']
|
|
|
|
|
raise RuntimeError, "Interface #{dev} do not have an ipv4 address at position #{num}" if addrs[NetworkInterface::AF_INET].length < num + 1
|
|
|
|
|
raise RuntimeError, "Can not get the IPv4 address for interface #{dev}" if !addrs[NetworkInterface::AF_INET][num]['addr']
|
|
|
|
|
addrs[NetworkInterface::AF_INET][num]['addr']
|
|
|
|
|
end
|
|
|
|
|
|
|
|
|
|
def get_ipv4_netmask(dev, num=0)
|
|
|
|
|
check_pcaprub_loaded
|
|
|
|
|
dev = get_interface_guid(dev)
|
|
|
|
|
addrs = Pcap.addresses(dev)
|
|
|
|
|
addrs = NetworkInterface.addresses(dev)
|
|
|
|
|
raise RuntimeError, "Interface #{dev} do not exists" if !addrs
|
|
|
|
|
raise RuntimeError, "Interface #{dev} do not have an ipv4 address at position #{num}" if addrs[Pcap::AF_INET].length < num + 1
|
|
|
|
|
raise RuntimeError, "Can not get IPv4 netmask for interface #{dev}" if !addrs[Pcap::AF_INET][num]['netmask']
|
|
|
|
|
addrs[Pcap::AF_INET][num]['netmask']
|
|
|
|
|
raise RuntimeError, "Interface #{dev} do not have an ipv4 address at position #{num}" if addrs[NetworkInterface::AF_INET].length < num + 1
|
|
|
|
|
raise RuntimeError, "Can not get IPv4 netmask for interface #{dev}" if !addrs[NetworkInterface::AF_INET][num]['netmask']
|
|
|
|
|
addrs[NetworkInterface::AF_INET][num]['netmask']
|
|
|
|
|
end
|
|
|
|
|
|
|
|
|
|
def get_ipv4_broadcast(dev, num=0)
|
|
|
|
|
check_pcaprub_loaded
|
|
|
|
|
dev = get_interface_guid(dev)
|
|
|
|
|
addrs = Pcap.addresses(dev)
|
|
|
|
|
addrs = NetworkInterface.addresses(dev)
|
|
|
|
|
raise RuntimeError, "Interface #{dev} do not exists" if !addrs
|
|
|
|
|
raise RuntimeError, "Interface #{dev} do not have an ipv4 address at position #{num}" if addrs[Pcap::AF_INET].length < num + 1
|
|
|
|
|
raise RuntimeError, "Can not get IPv4 broadcast address for interface #{dev}" if !addrs[Pcap::AF_INET][num]['broadcast']
|
|
|
|
|
addrs[Pcap::AF_INET][num]['broadcast']
|
|
|
|
|
raise RuntimeError, "Interface #{dev} do not have an ipv4 address at position #{num}" if addrs[NetworkInterface::AF_INET].length < num + 1
|
|
|
|
|
raise RuntimeError, "Can not get IPv4 broadcast address for interface #{dev}" if !addrs[NetworkInterface::AF_INET][num]['broadcast']
|
|
|
|
|
addrs[NetworkInterface::AF_INET][num]['broadcast']
|
|
|
|
|
end
|
|
|
|
|
|
|
|
|
|
def get_ipv6_addr_count(dev)
|
|
|
|
|
check_pcaprub_loaded
|
|
|
|
|
dev = get_interface_guid(dev)
|
|
|
|
|
raise RuntimeError, "IPv6 information is not available on this platform" if not ::Pcap.const_defined?(:AF_INET6)
|
|
|
|
|
addrs = Pcap.addresses(dev)
|
|
|
|
|
raise RuntimeError, "IPv6 information is not available on this platform" unless ::NetworkInterface.const_defined?(:AF_INET6)
|
|
|
|
|
addrs = NetworkInterface.addresses(dev)
|
|
|
|
|
raise RuntimeError, "Interface #{dev} do not exists" if !addrs
|
|
|
|
|
addrs[Pcap::AF_INET6].length
|
|
|
|
|
addrs[NetworkInterface::AF_INET6].length
|
|
|
|
|
end
|
|
|
|
|
|
|
|
|
|
# NOTE: IPv6 is not implemented on Windows
|
|
|
|
|
def get_ipv6_addr(dev, num=0)
|
|
|
|
|
check_pcaprub_loaded
|
|
|
|
|
dev = get_interface_guid(dev)
|
|
|
|
|
raise RuntimeError, "IPv6 information is not available on this platform" if not ::Pcap.const_defined?(:AF_INET6)
|
|
|
|
|
addrs = Pcap.addresses(dev)
|
|
|
|
|
raise RuntimeError, "IPv6 information is not available on this platform" unless ::NetworkInterface.const_defined?(:AF_INET6)
|
|
|
|
|
addrs = NetworkInterface.addresses(dev)
|
|
|
|
|
raise RuntimeError, "Interface #{dev} do not exists" if !addrs
|
|
|
|
|
raise RuntimeError, "Interface #{dev} do not have an ipv6 address at position #{num}" if addrs[Pcap::AF_INET6].length < num + 1
|
|
|
|
|
raise RuntimeError, "Can not get ipv6 address for interface #{dev}" if !addrs[Pcap::AF_INET6][num]['addr']
|
|
|
|
|
addrs[Pcap::AF_INET6][num]['addr'].gsub(/%(.)*$/,'')
|
|
|
|
|
raise RuntimeError, "Interface #{dev} do not have an ipv6 address at position #{num}" if addrs[NetworkInterface::AF_INET6].length < num + 1
|
|
|
|
|
raise RuntimeError, "Can not get ipv6 address for interface #{dev}" if !addrs[NetworkInterface::AF_INET6][num]['addr']
|
|
|
|
|
addrs[NetworkInterface::AF_INET6][num]['addr'].gsub(/%(.)*$/, '')
|
|
|
|
|
end
|
|
|
|
|
|
|
|
|
|
def get_ipv6_netmask(dev, num=0)
|
|
|
|
|
check_pcaprub_loaded
|
|
|
|
|
dev = get_interface_guid(dev)
|
|
|
|
|
raise RuntimeError, "IPv6 information is not available on this platform" if not ::Pcap.const_defined?(:AF_INET6)
|
|
|
|
|
addrs = Pcap.addresses(dev)
|
|
|
|
|
raise RuntimeError, "IPv6 information is not available on this platform" unless ::NetworkInterface.const_defined?(:AF_INET6)
|
|
|
|
|
addrs = NetworkInterface.addresses(dev)
|
|
|
|
|
raise RuntimeError, "Interface #{dev} do not exists" if !addrs
|
|
|
|
|
raise RuntimeError, "Interface #{dev} do not have an ipv6 address at position #{num}" if addrs[Pcap::AF_INET6].length < num + 1
|
|
|
|
|
raise RuntimeError, "Can not get ipv6 netmask address for interface #{dev}" if !addrs[Pcap::AF_INET6][num]['netmask']
|
|
|
|
|
addrs[Pcap::AF_INET6][num]['netmask']
|
|
|
|
|
raise RuntimeError, "Interface #{dev} do not have an ipv6 address at position #{num}" if addrs[NetworkInterface::AF_INET6].length < num + 1
|
|
|
|
|
raise RuntimeError, "Can not get ipv6 netmask address for interface #{dev}" if !addrs[NetworkInterface::AF_INET6][num]['netmask']
|
|
|
|
|
addrs[NetworkInterface::AF_INET6][num]['netmask']
|
|
|
|
|
end
|
|
|
|
|
|
|
|
|
|
# Protocol-specific encoding/decoding methods until more
|
|
|
|
|
# application protos get into PacketFu proper
|
|
|
|
|
|
|
|
|
|
# Intended to be used as the payload to an ICMP echo request's payload
|
|
|
|
|
def capture_icmp_echo_pack(id=nil,seq=nil,payload=nil)
|
|
|
|
|
def capture_icmp_echo_pack(id=nil, seq=nil, payload=nil)
|
|
|
|
|
id ||= rand(0x10000)
|
|
|
|
|
seq ||= rand(0x10000)
|
|
|
|
|
[id,seq,payload.to_s].pack("nna*")
|
|
|
|
|
[id, seq, payload.to_s].pack("nna*")
|
|
|
|
|
end
|
|
|
|
|
|
|
|
|
|
# Decodes and ICMP echo request or response.
|
|
|
|
@ -553,8 +559,8 @@ module Capture
|
|
|
|
|
data.unpack("nna*")
|
|
|
|
|
end
|
|
|
|
|
|
|
|
|
|
end
|
|
|
|
|
|
|
|
|
|
end
|
|
|
|
|
end
|
|
|
|
|
|
|
|
|
|
end
|
|
|
|
|
|
|
|
|
|
end
|
|
|
|
|