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david
@@ -22,8 +22,8 @@ require 'packet'
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local bit = require 'bit'
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prerule = function()
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return nmap.is_privileged() and
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(stdnse.get_script_args("interface") or nmap.get_interface())
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return nmap.is_privileged() and
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(stdnse.get_script_args("interface") or nmap.get_interface())
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end
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catch = function()
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@@ -51,7 +51,7 @@ end
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action = function()
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local if_name = stdnse.get_script_args("targets-ipv6-multicast.interface") or nmap.get_interface()
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local if_nfo = get_ipv6_interface_info_by_name(if_name)
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local if_nfo = get_ipv6_interface_info_by_name(if_name)
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if not if_nfo then
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stdnse.print_debug("Invalid interface: " .. if_name)
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return false
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@@ -61,16 +61,16 @@ action = function()
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local dst_mac = packet.mactobin("33:33:00:00:00:01")
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local dst_ip6 = packet.ip6tobin("ff02::1")
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local id_set = {}
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----------------------------------------------------------------------------
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--Multicast echo ping probe
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local dnet = nmap.new_dnet()
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local pcap = nmap.new_socket()
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try(dnet:ethernet_open(if_name))
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pcap:pcap_open(if_name, 128, false, "icmp6 and ip6[6:1] = 58 and ip6[40:1] = 129")
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local probe = packet.Frame:new()
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probe.mac_src = src_mac
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probe.mac_dst = dst_mac
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@@ -81,42 +81,42 @@ action = function()
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probe.echo_data = "Nmap host discovery."
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probe:build_icmpv6_echo_request()
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probe:build_icmpv6_header()
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probe:build_ipv6_packet()
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probe:build_ipv6_packet()
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probe:build_ether_frame()
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try(dnet:ethernet_send(probe.frame_buf))
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pcap:set_timeout(1000)
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pcap:set_timeout(1000)
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local pcap_timeout_count = 0
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local nse_timeout = 5
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local start_time = nmap:clock()
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local cur_time = nmap:clock()
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local found_targets = 0
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repeat
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repeat
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local status, length, layer2, layer3 = pcap:pcap_receive()
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cur_time = nmap:clock()
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if not status then
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pcap_timeout_count = pcap_timeout_count + 1
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else
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local reply = packet.Frame:new(layer2..layer3)
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local reply = packet.Frame:new(layer2..layer3)
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if reply.mac_dst == src_mac then
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local identifier = get_identifier(reply.ip6_src)
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local identifier = get_identifier(reply.ip6_src)
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if not id_set[identifier] then
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id_set[identifier] = true
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local target_str = packet.toipv6(reply.ip6_src)
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target.add(target_str)
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found_targets = found_targets + 1
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end
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end
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end
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end
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end
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until pcap_timeout_count >= 2 or cur_time - start_time >= nse_timeout
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stdnse.print_debug(0, "[Echo ping] Found %d targets.", found_targets)
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dnet:ethernet_close()
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pcap:pcap_close()
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return true
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end
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@@ -22,8 +22,8 @@ require 'packet'
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local bit = require 'bit'
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prerule = function()
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return nmap.is_privileged() and
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(stdnse.get_script_args("interface") or nmap.get_interface())
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return nmap.is_privileged() and
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(stdnse.get_script_args("interface") or nmap.get_interface())
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end
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catch = function()
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@@ -62,7 +62,7 @@ end
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action = function()
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local if_name = stdnse.get_script_args("targets-ipv6-multicast.interface") or nmap.get_interface()
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local if_nfo = get_ipv6_interface_info_by_name(if_name)
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local if_nfo = get_ipv6_interface_info_by_name(if_name)
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if not if_nfo then
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stdnse.print_debug("Invalid interface: " .. if_name)
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return false
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@@ -72,16 +72,16 @@ action = function()
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local dst_mac = packet.mactobin("33:33:00:00:00:01")
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local dst_ip6 = packet.ip6tobin("ff02::1")
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local id_set = {}
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----------------------------------------------------------------------------
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--Multicast invalid destination exheader probe
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--Multicast invalid destination exheader probe
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local dnet = nmap.new_dnet()
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local pcap = nmap.new_socket()
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try(dnet:ethernet_open(if_name))
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pcap:pcap_open(if_name, 128, false, "icmp6 and ip6[6:1] = 58 and ip6[40:1] = 4")
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local probe = packet.Frame:new()
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probe.mac_src = src_mac
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probe.mac_dst = dst_mac
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@@ -99,18 +99,18 @@ action = function()
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probe:build_ipv6_packet()
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probe:build_ether_frame()
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try(dnet:ethernet_send(probe.frame_buf))
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pcap:set_timeout(1000)
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pcap:set_timeout(1000)
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local pcap_timeout_count = 0
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local nse_timeout = 5
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local start_time = nmap:clock()
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local cur_time = nmap:clock()
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local found_targets = 0
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repeat
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repeat
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local status, length, layer2, layer3 = pcap:pcap_receive()
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cur_time = nmap:clock()
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if not status then
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@@ -125,16 +125,16 @@ action = function()
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if not id_set[identifier] then
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id_set[identifier] = true
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local target_str = packet.toipv6(target_addr)
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target.add(target_str)
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target.add(target_str)
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end
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end
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end
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until pcap_timeout_count >= 2 or cur_time - start_time >= nse_timeout
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stdnse.print_debug(0, "[Invalid DSTOPTS] Found %d targets.", found_targets)
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dnet:ethernet_close()
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pcap:pcap_close()
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return true
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end
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@@ -20,8 +20,8 @@ require "os"
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require "math"
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prerule = function()
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return nmap.is_privileged() and
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(stdnse.get_script_args("targets-ipv6-multicast.interface") or nmap.get_interface())
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return nmap.is_privileged() and
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(stdnse.get_script_args("targets-ipv6-multicast.interface") or nmap.get_interface())
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end
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catch = function()
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@@ -49,15 +49,15 @@ end
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--- Get a Unique-local Address with random global ID.
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-- @param local_scope The scope of the address, local or reserved.
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-- @return A 16-byte string of IPv6 address, and the length of the prefix.
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-- @return A 16-byte string of IPv6 address, and the length of the prefix.
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local function get_radom_ula_prefix(local_scope)
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local ula_prefix
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math.randomseed(os.time())
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local global_id = string.char(math.random(256)-1,math.random(256)-1,math.random(256)-1,math.random(256)-1,math.random(256)-1)
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if local_scope then
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ula_prefix = packet.ip6tobin("fd00::")
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else
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else
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ula_prefix = packet.ip6tobin("fc00::")
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end
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ula_prefix = string.sub(ula_prefix,1,1) .. global_id .. string.sub(ula_prefix,7,-1)
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@@ -72,25 +72,24 @@ end
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-- @param preferred_time integer that represents the preferred time of the prefix.
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local function build_router_advert(mac_src,prefix,prefix_len,valid_time,preferred_time)
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local ra_msg = string.char(0x0, --cur hop limit
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0x08, --flags
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0x00,0x00, --router lifetime
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0x00,0x00,0x00,0x00, --reachable time
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0x00,0x00,0x00,0x00) --retrans timer
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local prefix_option_msg = string.char(prefix_len,
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0xc0) .. --flags: Onlink, Auto
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packet.set_u32("....",0,valid_time) ..
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packet.set_u32("....",0,preferred_time) ..
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string.char(0,0,0,0) .. --unknown
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prefix
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0x08, --flags
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0x00,0x00, --router lifetime
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0x00,0x00,0x00,0x00, --reachable time
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0x00,0x00,0x00,0x00) --retrans timer
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local prefix_option_msg = string.char(prefix_len, 0xc0) .. --flags: Onlink, Auto
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packet.set_u32("....",0,valid_time) ..
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packet.set_u32("....",0,preferred_time) ..
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string.char(0,0,0,0) .. --unknown
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prefix
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local icmpv6_prefix_option = packet.Packet:set_icmpv6_option(packet.ND_OPT_PREFIX_INFORMATION,prefix_option_msg)
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local icmpv6_src_link_option = packet.Packet:set_icmpv6_option(packet.ND_OPT_SOURCE_LINKADDR,mac_src)
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local icmpv6_src_link_option = packet.Packet:set_icmpv6_option(packet.ND_OPT_SOURCE_LINKADDR,mac_src)
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local icmpv6_payload = ra_msg .. icmpv6_prefix_option .. icmpv6_src_link_option
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return icmpv6_payload
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end
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action = function()
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local if_name = stdnse.get_script_args("targets-ipv6-multicast.interface") or nmap.get_interface()
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local if_nfo = get_ipv6_interface_info_by_name(if_name)
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local if_nfo = get_ipv6_interface_info_by_name(if_name)
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if not if_nfo then
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stdnse.print_debug("Invalid interface: " .. if_name)
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return false
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@@ -102,11 +101,11 @@ action = function()
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local id_set = {}
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----------------------------------------------------------------------------
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--SLAAC-based host discovery probe
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--SLAAC-based host discovery probe
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local dnet = nmap.new_dnet()
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local pcap = nmap.new_socket()
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try(dnet:ethernet_open(if_name))
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pcap:pcap_open(if_name, 128, true, "src ::0/128 and dst net ff02::1:0:0/96 and icmp6 and ip6[6:1] = 58 and ip6[40:1] = 135")
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@@ -118,7 +117,7 @@ action = function()
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-- Sometimes it makes sense to regard the several addresses of a host as different hosts, as the host's administrator may apply different firewall configurations on them.
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local valid_lifetime = 6
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local preferred_lifetime = 6
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local probe = packet.Frame:new()
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probe.ip6_src = packet.mac_to_lladdr(src_mac)
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@@ -130,21 +129,21 @@ action = function()
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probe:build_icmpv6_header(packet.ND_ROUTER_ADVERT, 0, icmpv6_payload)
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probe:build_ipv6_packet()
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probe:build_ether_frame()
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try(dnet:ethernet_send(probe.frame_buf))
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local expected_mac_dst_prefix = packet.mactobin("33:33:ff:00:00:00")
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local expected_ip6_src = packet.ip6tobin("::")
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local expected_ip6_dst_prefix = packet.ip6tobin("ff02::1:0:0")
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pcap:set_timeout(1000)
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local pcap_timeout_count = 0
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local nse_timeout = 5
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local start_time = nmap:clock()
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local cur_time = nmap:clock()
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local found_targets = 0
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repeat
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local status, length, layer2, layer3 = pcap:pcap_receive()
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cur_time = nmap:clock()
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@@ -153,26 +152,26 @@ action = function()
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else
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local reply = packet.Frame:new(layer2)
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if string.sub(reply.mac_dst, 1, 3) == string.sub(expected_mac_dst_prefix, 1, 3) then
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reply = packet.Packet:new(layer3)
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if reply.ip6_src == expected_ip6_src and
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string.sub(expected_ip6_dst_prefix,1,12) == string.sub(reply.ip6_dst,1,12) then
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local ula_target_addr_str = packet.toipv6(reply.ns_target)
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reply = packet.Packet:new(layer3)
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if reply.ip6_src == expected_ip6_src and
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string.sub(expected_ip6_dst_prefix,1,12) == string.sub(reply.ip6_dst,1,12) then
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local ula_target_addr_str = packet.toipv6(reply.ns_target)
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local identifier = get_identifier(reply.ns_target)
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found_targets = found_targets + 1
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--Filter out the reduplicative identifiers.
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--Filter out the reduplicative identifiers.
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--A host will send several NS packets with the same interface identifier if it receives several RA packets with different prefix during the discovery phase.
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if not id_set[identifier] then
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if not id_set[identifier] then
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id_set[identifier] = true
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local actual_addr_str = packet.toipv6(actual_prefix .. identifier)
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target.add(actual_addr_str)
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end
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end
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end
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end
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end
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until pcap_timeout_count >= 2 or cur_time - start_time >= nse_timeout
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stdnse.print_debug(0, "[SLAAC] Found %d targets.", found_targets)
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dnet:ethernet_close()
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pcap:pcap_close()
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return true
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