Module: PWN::Plugins::Packet

Defined in:
lib/pwn/plugins/packet.rb

Overview

This plugin is used for interacting with PCAP files to map out and visualize in an automated fashion what comprises a infrastructure, network, and/or application

Class Method Summary collapse

Class Method Details

.authors ⇒ Object

Author(s)

0day Inc. [email protected]



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# File 'lib/pwn/plugins/packet.rb', line 1156

public_class_method def self.authors
  "AUTHOR(S):
    0day Inc. <[email protected]>
  "
end

.cap_net_raw?(opts = {}) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/pwn/plugins/packet.rb', line 1119

public_class_method def self.cap_net_raw?(opts = {})
  _iface = opts[:iface]
  return true if File.readable?('/dev/bpf0')

  File.read('/proc/self/status').to_s.include?('CapEff:') && begin
    line = File.readlines('/proc/self/status').find { |l| l.start_with?('CapEff:') }.to_s
    val = line.split.last.to_s.to_i(16)
    val.anybits?(0x2000)
  rescue StandardError
    false
  end
end

.capture(opts = {}) ⇒ Object 



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# File 'lib/pwn/plugins/packet.rb', line 1132

public_class_method def self.capture(opts = {})
  require 'pwn/plugins/capability_broker'
  require 'base64'
  result = CapabilityBroker.request(operation: 'capture', iface: opts.fetch(:iface, 'eth0'),
                                    count: opts.fetch(:count, 8), timeout: opts.fetch(:timeout, 5), socket: opts[:socket])
  unless result[:ok]
    return result.merge(degraded: true, missing_capabilities: cap_net_raw? ? [] : ['CAP_NET_RAW'])
  end

  bytes = Base64.strict_decode64(result.fetch(:pcap))
  raise 'invalid pcap response' unless bytes.bytesize >= 24 && bytes.start_with?([0xa1b2c3d4].pack('V'))

  out = File.expand_path(opts.fetch(:path, File.join(Dir.home, '.pwn', 'artifacts', "capture-#{Time.now.to_i}.pcap")))
  FileUtils.mkdir_p(File.dirname(out))
  File.binwrite(out, bytes)
  raise 'capture readback failed' unless File.binread(out) == bytes

  result.except(:pcap).merge(path: out, degraded: false)
rescue StandardError => e
  { ok: false, degraded: true, error: e.message }
end

.construct_arp(opts = {}) ⇒ Object

Supported Method Parameters

pkt = PWN::Plugins::Packet.construct_arp( ip_saddr: 'required - source ip of packet', ip_daddr: 'required - destination ip to send packet', payload: 'optional - packet payload defaults to empty string', ip_id: 'optional - defaults to 0xfeed', iface: 'optional - interface to send packet (defaults to eth0)', )



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# File 'lib/pwn/plugins/packet.rb', line 44

public_class_method def self.construct_arp(opts = {})
  # Ethernet Header
  eth_src = opts[:eth_src]
  eth_dst = opts[:eth_dst]

  if opts[:eth_proto]
    eth_proto = opts[:eth_proto]
  else
    eth_proto = 0x0806 # ARP
  end

  # ARP Header
  if opts[:arp_hw]
    arp_hw = opts[:arp_hw].to_i
  else
    arp_hw = 1
  end

  if opts[:arp_proto]
    arp_proto = opts[:arp_proto]
  else
    arp_proto = 0x0800 # IPv4
  end

  if opts[:arp_hw_len]
    arp_hw_len = opts[:arp_hw_len].to_i
  else
    arp_hw_len = 6
  end

  if opts[:arp_proto_len]
    arp_proto_len = opts[:arp_proto_len].to_i
  else
    arp_proto_len = 4
  end

  if opts[:arp_opcode]
    arp_opcode = opts[:arp_opcode].to_i
  else
    arp_opcode = 1
  end

  arp_src_mac = opts[:arp_src_mac]
  arp_ip_saddr = opts[:ip_saddr].to_s.scrub.strip.chomp

  arp_dst_mac = opts[:arp_dst_mac]
  arp_ip_daddr = opts[:ip_daddr].to_s.scrub.strip.chomp

  # Payload
  payload = opts[:payload]

  pkt = PacketFu::ARPPacket.new(config: PacketFu::Utils.whoami?)
  # Ethernet Header
  pkt.eth_saddr = eth_src unless eth_src.nil?
  pkt.eth_daddr = eth_dst unless eth_dst.nil?
  pkt.eth_proto = eth_proto
  # ARP Header
  pkt.arp_hw = arp_hw
  pkt.arp_proto = arp_proto
  pkt.arp_hw_len = arp_hw_len
  pkt.arp_proto_len = arp_proto_len
  pkt.arp_opcode = arp_opcode
  pkt.arp_saddr_mac = arp_src_mac
  pkt.arp_saddr_ip = arp_ip_saddr
  pkt.arp_daddr_mac = arp_dst_mac
  pkt.arp_daddr_ip = arp_ip_daddr
  # Payload
  pkt.payload = payload if payload

  pkt
rescue StandardError => e
  raise e
end

.construct_eth(opts = {}) ⇒ Object

Supported Method Parameters

pkt = PWN::Plugins::Packet.construct_eth( ip_saddr: 'required - source ip of packet', ip_daddr: 'required - destination ip to send packet', payload: 'optional - packet payload defaults to empty string', ip_id: 'optional - defaults to 0xfeed', iface: 'optional - interface to send packet (defaults to eth0)', )



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# File 'lib/pwn/plugins/packet.rb', line 127

public_class_method def self.construct_eth(opts = {})
  # Ethernet Header
  eth_src = opts[:eth_src]
  eth_dst = opts[:eth_dst]

  if opts[:eth_proto]
    eth_proto = opts[:eth_proto]
  else
    eth_proto = 0x0800 # IPv4
  end

  # Payload
  payload = opts[:payload]

  pkt = PacketFu::EthPacket.new(config: PacketFu::Utils.whoami?)
  # Ethernet Header
  pkt.eth_saddr = eth_src unless eth_src.nil?
  pkt.eth_daddr = eth_dst unless eth_dst.nil?
  pkt.eth_proto = eth_proto
  # Payload
  pkt.payload = payload if payload

  pkt
rescue StandardError => e
  raise e
end

.construct_hsrp(opts = {}) ⇒ Object

Supported Method Parameters

pkt = PWN::Plugins::Packet.construct_hsrp( ip_saddr: 'required - source ip of packet', ip_daddr: 'required - destination ip to send packet', payload: 'optional - packet payload defaults to empty string', ip_id: 'optional - defaults to 0xfeed', iface: 'optional - interface to send packet (defaults to eth0)', )



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# File 'lib/pwn/plugins/packet.rb', line 163

public_class_method def self.construct_hsrp(opts = {})
  # Ethernet Header
  eth_src = opts[:eth_src]
  eth_dst = opts[:eth_dst]

  if opts[:eth_proto]
    eth_proto = opts[:eth_proto]
  else
    eth_proto = 0x0800 # IPv4
  end

  # IP Header
  if opts[:ip_v]
    ip_v = opts[:ip_v]
  else
    ip_v = 4
  end

  if opts[:ip_hl]
    ip_hl = opts[:ip_hl]
  else
    ip_hl = 5
  end

  if opts[:ip_tos]
    ip_tos = opts[:ip_tos]
  else
    ip_tos = 0
  end

  if opts[:ip_len]
    ip_len = opts[:ip_len]
  else
    ip_len = 20
  end

  if opts[:ip_id]
    ip_id = opts[:ip_id]
  else
    ip_id = 0xfeed
  end

  if opts[:ip_frag]
    ip_frag = opts[:ip_frag]
  else
    ip_frag = 0
  end

  if opts[:ip_ttl]
    ip_ttl = opts[:ip_ttl]
  else
    ip_ttl = 32
  end

  if opts[:ip_proto]
    ip_proto = opts[:ip_proto]
  else
    ip_proto = 17 # UDP
  end

  if opts[:ip_sum]
    ip_sum = opts[:ip_sum]
  else
    ip_sum = 0xffff
  end

  ip_saddr = opts[:ip_saddr]
  ip_daddr = opts[:ip_daddr]

  # UDP Header
  udp_src_port = opts[:udp_src_port]
  udp_dst_port = opts[:udp_dst_port]

  if opts[:udp_len]
    udp_len = opts[:udp_len]
  else
    udp_len = 8
  end

  if opts[:udp_sum]
    udp_sum = opts[:udp_sum]
  else
    udp_sum = 0x0000
  end

  # HSRP Header
  if opts[:hsrp_version]
    hsrp_version = opts[:hsrp_version]
  else
    hsrp_version = 0
  end

  if opts[:hsrp_opcode]
    hsrp_opcode = opts[:hsrp_opcode]
  else
    hsrp_opcode = 0
  end

  if opts[:hsrp_state]
    hsrp_state = opts[:hsrp_state]
  else
    hsrp_state = 0
  end

  if opts[:hsrp_hellotime]
    hsrp_state = opts[:hsrp_hellotime]
  else
    hsrp_state = 3
  end

  if opts[:hsrp_holdtime]
    hsrp_holdtime = opts[:hsrp_holdtime]
  else
    hsrp_holdtime = 10
  end

  if opts[:hsrp_priority]
    hsrp_priority = opts[:hsrp_priority]
  else
    hsrp_priority = 0
  end

  if opts[:hsrp_group]
    hsrp_group = opts[:hsrp_group]
  else
    hsrp_group = 0
  end

  if opts[:hsrp_reserved]
    hsrp_reserved = opts[:hsrp_reserved]
  else
    hsrp_reserved = 0
  end

  if opts[:hsrp_password]
    hsrp_password = opts[:hsrp_password]
  else
    hsrp_password = "cicso\x00\x00\x00"
  end

  if opts[:hsrp_addr]
    hsrp_addr = opts[:hsrp_addr]
  else
    hsrp_addr = '0.0.0.0'
  end

  # Payload
  payload = opts[:payload]

  pkt = PacketFu::HSRPPacket.new(config: PacketFu::Utils.whoami?)
  # Ethernet Header
  pkt.eth_saddr = eth_src unless eth_src.nil?
  pkt.eth_daddr = eth_dst unless eth_dst.nil?
  pkt.eth_proto = eth_proto
  # IP Header
  pkt.ip_v = ip_v
  pkt.ip_hl = ip_hl
  pkt.ip_tos = ip_tos
  pkt.ip_len = ip_len
  pkt.ip_id = ip_id
  pkt.ip_frag = ip_frag
  pkt.ip_ttl = ip_ttl
  pkt.ip_proto = ip_proto
  pkt.ip_sum = ip_sum
  pkt.ip_saddr = ip_saddr
  pkt.ip_daddr = ip_daddr
  # UDP Header
  pkt.udp_src = udp_src_port if udp_src_port
  pkt.udp_dst = udp_dst_port if udp_dst_port
  pkt.udp_len = udp_len
  pkt.udp_sum = udp_sum
  # HSRP Header
  pkt.hsrp_version = hsrp_version
  pkt.hsrp_opcode = hsrp_opcode
  pkt.hsrp_state = hsrp_state
  pkt.hsrp_hellotime = hsrp_hellotime
  pkt.hsrp_holdtime = hsrp_holdtime
  pkt.hsrp_priority = hsrp_priority
  pkt.hsrp_group = hsrp_group
  pkt.hsrp_reserved = hsrp_reserved
  pkt.hsrp_password = hsrp_password
  pkt.hsrp_addr = hsrp_addr
  # Payload
  pkt.payload = payload if payload

  pkt
rescue StandardError => e
  raise e
end

.construct_icmp(opts = {}) ⇒ Object

Supported Method Parameters

pkt = PWN::Plugins::Packet.construct_icmp( ip_saddr: 'required - source ip of packet', ip_daddr: 'required - destination ip to send packet', payload: 'optional - packet payload defaults to "ping"', ip_id: 'optional - defaults to 0xfeed', iface: 'optional - interface to send packet (defaults to eth0)', )



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# File 'lib/pwn/plugins/packet.rb', line 362

public_class_method def self.construct_icmp(opts = {})
  # Ethernet Header
  eth_src = opts[:eth_src]
  eth_dst = opts[:eth_dst]

  if opts[:eth_proto]
    eth_proto = opts[:eth_proto]
  else
    eth_proto = 0x0800 # IPv4
  end

  # IP Header
  if opts[:ip_v]
    ip_v = opts[:ip_v]
  else
    ip_v = 4
  end

  if opts[:ip_hl]
    ip_hl = opts[:ip_hl]
  else
    ip_hl = 5
  end

  if opts[:ip_tos]
    ip_tos = opts[:ip_tos]
  else
    ip_tos = 0
  end

  if opts[:ip_len]
    ip_len = opts[:ip_len]
  else
    ip_len = 20
  end

  if opts[:ip_id]
    ip_id = opts[:ip_id]
  else
    ip_id = 0xfeed
  end

  if opts[:ip_frag]
    ip_frag = opts[:ip_frag]
  else
    ip_frag = 0
  end

  if opts[:ip_ttl]
    ip_ttl = opts[:ip_ttl]
  else
    ip_ttl = 32
  end

  if opts[:ip_proto]
    ip_proto = opts[:ip_proto]
  else
    ip_proto = 1 # ICMP
  end

  if opts[:ip_sum]
    ip_sum = opts[:ip_sum]
  else
    ip_sum = 0xffff
  end

  ip_saddr = opts[:ip_saddr]
  ip_daddr = opts[:ip_daddr]

  # ICMP Header
  if opts[:icmp_type]
    icmp_type = opts[:icmp_type]
  else
    icmp_type = 8
  end

  if opts[:icmp_code]
    icmp_code = opts[:icmp_code]
  else
    icmp_code = 0
  end

  if opts[:icmp_sum]
    icmp_sum = opts[:icmp_sum]
  else
    icmp_sum = 0xffff
  end

  # Payload
  opts[:payload] ? payload = opts[:payload] : payload = '*ping*'

  pkt = PacketFu::ICMPPacket.new(config: PacketFu::Utils.whoami?)
  # Ethernet Header
  pkt.eth_saddr = eth_src unless eth_src.nil?
  pkt.eth_daddr = eth_dst unless eth_dst.nil?
  pkt.eth_proto = eth_proto
  # IP Header
  pkt.ip_v = ip_v
  pkt.ip_hl = ip_hl
  pkt.ip_tos = ip_tos
  pkt.ip_len = ip_len
  pkt.ip_id = ip_id
  pkt.ip_frag = ip_frag
  pkt.ip_ttl = ip_ttl
  pkt.ip_proto = ip_proto
  pkt.ip_sum = ip_sum
  pkt.ip_saddr = ip_saddr
  pkt.ip_daddr = ip_daddr
  # ICMP Header
  pkt.icmp_type = icmp_type
  pkt.icmp_code = icmp_code
  pkt.icmp_sum = icmp_sum
  # Payload
  pkt.payload = payload if payload

  pkt
rescue StandardError => e
  raise e
end

.construct_icmpv6(opts = {}) ⇒ Object

Supported Method Parameters

pkt = PWN::Plugins::Packet.construct_icmpv6( ip_saddr: 'required - source ip of packet', ip_daddr: 'required - destination ip to send packet', payload: 'optional - packet payload defaults to empty string', ip_id: 'optional - defaults to 0xfeed', iface: 'optional - interface to send packet (defaults to eth0)', )



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# File 'lib/pwn/plugins/packet.rb', line 491

public_class_method def self.construct_icmpv6(opts = {})
  # Ethernet Header
  eth_src = opts[:eth_src]
  eth_dst = opts[:eth_dst]

  if opts[:eth_proto]
    eth_proto = opts[:eth_proto]
  else
    eth_proto = 0x86dd # IPv6
  end

  # IPv6 Header
  if opts[:ipv6_v]
    ipv6_v = opts[:ipv6_v]
  else
    ipv6_v = 6
  end

  if opts[:ipv6_class]
    ipv6_class = opts[:ipv6_class]
  else
    ipv6_class = 0
  end

  if opts[:ipv6_label]
    ipv6_label = opts[:ipv6_label]
  else
    ipv6_label = 0
  end

  if opts[:ipv6_len]
    ipv6_len = opts[:ipv6_len]
  else
    ipv6_len = 0
  end

  if opts[:ipv6_next]
    ipv6_next = opts[:ipv6_next]
  else
    ipv6_next = 58
  end

  if opts[:ipv6_hop]
    ipv6_hop = opts[:ipv6_hop]
  else
    ipv6_hop = 255
  end

  ipv6_saddr = opts[:ipv6_saddr]
  ipv6_daddr = opts[:ipv6_daddr]

  # ICMPv6 Header
  if opts[:icmpv6_type]
    icmpv6_type = opts[:icmpv6_type]
  else
    icmp_type = 8
  end

  if opts[:icmpv6_code]
    icmpv6_code = opts[:icmpv6_code]
  else
    icmpv6_code = 0
  end

  if opts[:icmpv6_sum]
    icmp_sum = opts[:icmpv6_sum]
  else
    icmpv6_sum = 0x0000
  end

  # Payload
  payload = opts[:payload]

  pkt = PacketFu::IPv6Packet.new(config: PacketFu::Utils.whoami?)
  # Ethernet Header
  pkt.eth_saddr = eth_src unless eth_src.nil?
  pkt.eth_daddr = eth_dst unless eth_dst.nil?
  pkt.eth_proto = eth_proto
  # IPv6 Header
  pkt.ipv6_v = ipv6_v
  pkt.ipv6_hl = ipv6_hl
  pkt.ipv6_tos = ipv6_tos
  pkt.ipv6_len = ipv6_len
  pkt.ipv6_id = ipv6_id
  pkt.ipv6_frag = ipv6_frag
  pkt.ipv6_saddr = ipv6_saddr
  pkt.ipv6_daddr = ipv6_daddr
  # ICMPv6 Header
  pkt.icmpv6_type = icmpv6_type
  pkt.icmpv6_code = icmpv6_code
  pkt.icmpv6_sum = icmpv6_sum
  # Payload
  pkt.payload = payload if payload

  pkt
rescue StandardError => e
  raise e
end

.construct_ip(opts = {}) ⇒ Object

Supported Method Parameters

pkt = PWN::Plugins::Packet.construct_ip( ip_saddr: 'required - source ip of packet', ip_daddr: 'required - destination ip to send packet', payload: 'optional - packet payload defaults to empty string', ip_id: 'optional - defaults to 0xfeed', iface: 'optional - interface to send packet (defaults to eth0)', )



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# File 'lib/pwn/plugins/packet.rb', line 599

public_class_method def self.construct_ip(opts = {})
  # Ethernet Header
  eth_src = opts[:eth_src]
  eth_dst = opts[:eth_dst]

  if opts[:eth_proto]
    eth_proto = opts[:eth_proto]
  else
    eth_proto = 0x0800 # IPv4
  end

  # IP Header
  if opts[:ip_v]
    ip_v = opts[:ip_v]
  else
    ip_v = 4
  end

  if opts[:ip_hl]
    ip_hl = opts[:ip_hl]
  else
    ip_hl = 5
  end

  if opts[:ip_tos]
    ip_tos = opts[:ip_tos]
  else
    ip_tos = 0
  end

  if opts[:ip_len]
    ip_len = opts[:ip_len]
  else
    ip_len = 20
  end

  if opts[:ip_id]
    ip_id = opts[:ip_id]
  else
    ip_id = 0xfeed
  end

  if opts[:ip_frag]
    ip_frag = opts[:ip_frag]
  else
    ip_frag = 0
  end

  if opts[:ip_ttl]
    ip_ttl = opts[:ip_ttl]
  else
    ip_ttl = 32
  end

  if opts[:ip_proto]
    ip_proto = opts[:ip_proto]
  else
    ip_proto = -1
  end

  if opts[:ip_sum]
    ip_sum = opts[:ip_sum]
  else
    ip_sum = 0xffff
  end

  ip_saddr = opts[:ip_saddr]
  ip_daddr = opts[:ip_daddr]

  # Payload
  payload = opts[:payload]

  pkt = PacketFu::IPPacket.new(config: PacketFu::Utils.whoami?)
  # Ethernet Header
  pkt.eth_saddr = eth_src unless eth_src.nil?
  pkt.eth_daddr = eth_dst unless eth_dst.nil?
  pkt.eth_proto = eth_proto
  # IP Header
  pkt.ip_v = ip_v
  pkt.ip_hl = ip_hl
  pkt.ip_tos = ip_tos
  pkt.ip_len = ip_len
  pkt.ip_id = ip_id
  pkt.ip_frag = ip_frag
  pkt.ip_ttl = ip_ttl
  pkt.ip_proto = ip_proto
  pkt.ip_sum = ip_sum
  pkt.ip_saddr = ip_saddr
  pkt.ip_daddr = ip_daddr
  # Payload
  pkt.payload = payload if payload

  pkt
rescue StandardError => e
  raise e
end

.construct_ipv6(opts = {}) ⇒ Object

Supported Method Parameters

pkt = PWN::Plugins::Packet.construct_ipv6( ip_saddr: 'required - source ip of packet', ip_daddr: 'required - destination ip to send packet', payload: 'optional - packet payload defaults to empty string', ip_id: 'optional - defaults to 0xfeed', iface: 'optional - interface to send packet (defaults to eth0)', )



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# File 'lib/pwn/plugins/packet.rb', line 705

public_class_method def self.construct_ipv6(opts = {})
  # Ethernet Header
  eth_src = opts[:eth_src]
  eth_dst = opts[:eth_dst]

  if opts[:eth_proto]
    eth_proto = opts[:eth_proto]
  else
    eth_proto = 0x86dd # IPv6
  end

  # IPv6 Header
  if opts[:ipv6_v]
    ipv6_v = opts[:ipv6_v]
  else
    ipv6_v = 6
  end

  if opts[:ipv6_class]
    ipv6_class = opts[:ipv6_class]
  else
    ipv6_class = 0
  end

  if opts[:ipv6_label]
    ipv6_label = opts[:ipv6_label]
  else
    ipv6_label = 0
  end

  if opts[:ipv6_len]
    ipv6_len = opts[:ipv6_len]
  else
    ipv6_len = 0
  end

  if opts[:ipv6_next]
    ipv6_next = opts[:ipv6_next]
  else
    ipv6_next = 0
  end

  if opts[:ipv6_hop]
    ipv6_hop = opts[:ipv6_hop]
  else
    ipv6_hop = 255
  end

  ipv6_saddr = opts[:ipv6_saddr]
  ipv6_daddr = opts[:ipv6_daddr]

  # Payload
  payload = opts[:payload]

  pkt = PacketFu::IPv6Packet.new(config: PacketFu::Utils.whoami?)
  # Ethernet Header
  pkt.eth_saddr = eth_src unless eth_src.nil?
  pkt.eth_daddr = eth_dst unless eth_dst.nil?
  pkt.eth_proto = eth_proto
  # IPv6 Header
  pkt.ipv6_v = ipv6_v
  pkt.ipv6_hl = ipv6_hl
  pkt.ipv6_tos = ipv6_tos
  pkt.ipv6_len = ipv6_len
  pkt.ipv6_id = ipv6_id
  pkt.ipv6_frag = ipv6_frag
  pkt.ipv6_saddr = ipv6_saddr
  pkt.ipv6_daddr = ipv6_daddr
  # Payload
  pkt.payload = payload if payload

  pkt
rescue StandardError => e
  raise e
end

.construct_tcp(opts = {}) ⇒ Object

Supported Method Parameters

pkt = PWN::Plugins::Packet.construct_tcp( ip_saddr: 'required - source ip of packet', ip_daddr: 'required - destination ip to send packet', payload: 'optional - packet payload defaults to empty string', ip_id: 'optional - defaults to 0xfeed', iface: 'optional - interface to send packet (defaults to eth0)', )



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# File 'lib/pwn/plugins/packet.rb', line 790

public_class_method def self.construct_tcp(opts = {})
  # Ethernet Header
  eth_src = opts[:eth_src]
  eth_dst = opts[:eth_dst]

  if opts[:eth_proto]
    eth_proto = opts[:eth_proto]
  else
    eth_proto = 0x0800 # IPv4
  end

  # IP Header
  if opts[:ip_v]
    ip_v = opts[:ip_v]
  else
    ip_v = 4
  end

  if opts[:ip_hl]
    ip_hl = opts[:ip_hl]
  else
    ip_hl = 5
  end

  if opts[:ip_tos]
    ip_tos = opts[:ip_tos]
  else
    ip_tos = 0
  end

  if opts[:ip_len]
    ip_len = opts[:ip_len]
  else
    ip_len = 20
  end

  if opts[:ip_id]
    ip_id = opts[:ip_id]
  else
    ip_id = 0xfeed
  end

  if opts[:ip_frag]
    ip_frag = opts[:ip_frag]
  else
    ip_frag = 0
  end

  if opts[:ip_ttl]
    ip_ttl = opts[:ip_ttl]
  else
    ip_ttl = 32
  end

  if opts[:ip_proto]
    ip_proto = opts[:ip_proto]
  else
    ip_proto = 6 # TCP
  end

  if opts[:ip_sum]
    ip_sum = opts[:ip_sum]
  else
    ip_sum = 0xffff
  end

  ip_saddr = opts[:ip_saddr]
  ip_daddr = opts[:ip_daddr]

  # TCP Header
  tcp_src_port = opts[:tcp_src_port]
  tcp_dst_port = opts[:tcp_dst_port]

  if opts[:tcp_seq]
    tcp_seq = opts[:tcp_seq]
  else
    tcp_seq = 0x5fcea416
  end

  if opts[:tcp_ack]
    tcp_ack = opts[:tcp_ack]
  else
    tcp_ack = 0x00000000
  end

  if opts[:tcp_hlen]
    tcp_hlen = opts[:tcp_hlen]
  else
    tcp_hlen = 5
  end

  if opts[:tcp_reserved]
    tcp_reserved = opts[:tcp_reserved]
  else
    tcp_reserved = 0
  end

  if opts[:tcp_ecn]
    tcp_ecn = opts[:tcp_ecn]
  else
    tcp_ecn = 0
  end

  tcp_flags = opts[:tcp_flags]

  if opts[:tcp_win]
    tcp_win = opts[:tcp_win]
  else
    tcp_win = 16_384
  end

  if opts[:tcp_sum]
    tcp_sum = opts[:tcp_sum]
  else
    tcp_sum = 0x1ab2
  end

  if opts[:tcp_urg]
    tcp_urg = opts[:tcp_urg]
  else
    tcp_urg = 0
  end

  tcp_opts = opts[:tcp_opts]

  # Payload
  payload = opts[:payload]

  pkt = PacketFu::TCPPacket.new(config: PacketFu::Utils.whoami?)
  # Ethernet Header
  pkt.eth_saddr = eth_src unless eth_src.nil?
  pkt.eth_daddr = eth_dst unless eth_dst.nil?
  pkt.eth_proto = eth_proto
  # IP Header
  pkt.ip_v = ip_v
  pkt.ip_hl = ip_hl
  pkt.ip_tos = ip_tos
  pkt.ip_len = ip_len
  pkt.ip_id = ip_id
  pkt.ip_frag = ip_frag
  pkt.ip_ttl = ip_ttl
  pkt.ip_proto = ip_proto
  pkt.ip_sum = ip_sum
  pkt.ip_saddr = ip_saddr
  pkt.ip_daddr = ip_daddr
  # TCP Header
  pkt.tcp_src = tcp_src_port if tcp_src_port
  pkt.tcp_dst = tcp_dst_port if tcp_dst_port
  pkt.tcp_seq = tcp_seq
  pkt.tcp_ack = tcp_ack
  pkt.tcp_hlen = tcp_hlen
  pkt.tcp_reserved = tcp_reserved
  pkt.tcp_ecn = tcp_ecn
  pkt.tcp_flags = PacketFu::TcpFlags.new
  pkt.tcp_win = tcp_win
  pkt.tcp_sum = tcp_sum
  pkt.tcp_urg = tcp_urg
  pkt.tcp_opts = PacketFu::TcpOptions.new
  # Payload
  pkt.payload = payload if payload

  pkt
rescue StandardError => e
  raise e
end

.construct_udp(opts = {}) ⇒ Object

Supported Method Parameters

pkt = PWN::Plugins::Packet.construct_udp( ip_saddr: 'required - source ip of packet', ip_daddr: 'required - destination ip to send packet', payload: 'optional - packet payload defaults to empty string', ip_id: 'optional - defaults to 0xfeed', iface: 'optional - interface to send packet (defaults to eth0)', )



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# File 'lib/pwn/plugins/packet.rb', line 965

public_class_method def self.construct_udp(opts = {})
  # Ethernet Header
  eth_src = opts[:eth_src]
  eth_dst = opts[:eth_dst]

  if opts[:eth_proto]
    eth_proto = opts[:eth_proto]
  else
    eth_proto = 0x0800 # IPv4
  end

  # IP Header
  if opts[:ip_v]
    ip_v = opts[:ip_v]
  else
    ip_v = 4
  end

  if opts[:ip_hl]
    ip_hl = opts[:ip_hl]
  else
    ip_hl = 5
  end

  if opts[:ip_tos]
    ip_tos = opts[:ip_tos]
  else
    ip_tos = 0
  end

  if opts[:ip_len]
    ip_len = opts[:ip_len]
  else
    ip_len = 20
  end

  if opts[:ip_id]
    ip_id = opts[:ip_id]
  else
    ip_id = 0xfeed
  end

  if opts[:ip_frag]
    ip_frag = opts[:ip_frag]
  else
    ip_frag = 0
  end

  if opts[:ip_ttl]
    ip_ttl = opts[:ip_ttl]
  else
    ip_ttl = 32
  end

  if opts[:ip_proto]
    ip_proto = opts[:ip_proto]
  else
    ip_proto = 17 # UDP
  end

  if opts[:ip_sum]
    ip_sum = opts[:ip_sum]
  else
    ip_sum = 0xffff
  end

  ip_saddr = opts[:ip_saddr]
  ip_daddr = opts[:ip_daddr]

  # UDP Header
  udp_src_port = opts[:udp_src_port]
  udp_dst_port = opts[:udp_dst_port]

  if opts[:udp_len]
    udp_len = opts[:udp_len]
  else
    udp_len = 8
  end

  if opts[:udp_sum]
    udp_sum = opts[:udp_sum]
  else
    udp_sum = 0xffde
  end

  # Payload
  payload = opts[:payload]

  pkt = PacketFu::UDPPacket.new(config: PacketFu::Utils.whoami?)
  # Ethernet Header
  pkt.eth_saddr = eth_src unless eth_src.nil?
  pkt.eth_daddr = eth_dst unless eth_dst.nil?
  pkt.eth_proto = eth_proto
  # IP Header
  pkt.ip_v = ip_v
  pkt.ip_hl = ip_hl
  pkt.ip_tos = ip_tos
  pkt.ip_len = ip_len
  pkt.ip_id = ip_id
  pkt.ip_frag = ip_frag
  pkt.ip_ttl = ip_ttl
  pkt.ip_proto = ip_proto
  pkt.ip_sum = ip_sum
  pkt.ip_saddr = ip_saddr
  pkt.ip_daddr = ip_daddr
  # UDP Header
  pkt.udp_src = udp_src_port if udp_src_port
  pkt.udp_dst = udp_dst_port if udp_dst_port
  pkt.udp_len = udp_len
  pkt.udp_sum = udp_sum
  # Payload
  pkt.payload = payload if payload

  pkt
rescue StandardError => e
  raise e
end

.help ⇒ Object

Display Usage for this Module



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# File 'lib/pwn/plugins/packet.rb', line 1164

public_class_method def self.help
  puts "USAGE:
    # Run open pcap file and return its result
    #{self}.open_pcap_file(
      path: 'required - path to packet capture file'
    )

    # Run construct arp and return its result
    #{self}.construct_arp(
      ip_saddr: 'required - source ip of packet',
      ip_daddr: 'required - destination ip to send packet',
      payload: 'optional - packet payload defaults to empty string',
      ip_id: 'optional - defaults to 0xfeed',
      iface: 'optional - interface to send packet (defaults to eth0)',
      eth_src: 'optional - eth src value consumed by #construct_arp',
      eth_dst: 'optional - eth dst value consumed by #construct_arp',
      eth_proto: 'optional - eth proto value consumed by #construct_arp',
      arp_hw: 'optional - arp hw value consumed by #construct_arp',
      arp_proto: 'optional - arp proto value consumed by #construct_arp',
      arp_hw_len: 'optional - arp hw len value consumed by #construct_arp',
      arp_proto_len: 'optional - arp proto len value consumed by #construct_arp',
      arp_opcode: 'optional - arp opcode value consumed by #construct_arp',
      arp_src_mac: 'optional - arp src mac value consumed by #construct_arp',
      arp_dst_mac: 'optional - arp dst mac value consumed by #construct_arp'
    )

    # Run construct eth and return its result
    #{self}.construct_eth(
      ip_saddr: 'required - source ip of packet',
      ip_daddr: 'required - destination ip to send packet',
      payload: 'optional - packet payload defaults to empty string',
      ip_id: 'optional - defaults to 0xfeed',
      iface: 'optional - interface to send packet (defaults to eth0)',
      eth_src: 'optional - eth src value consumed by #construct_eth',
      eth_dst: 'optional - eth dst value consumed by #construct_eth',
      eth_proto: 'optional - eth proto value consumed by #construct_eth'
    )

    # Run construct hsrp and return its result
    #{self}.construct_hsrp(
      ip_saddr: 'required - source ip of packet',
      ip_daddr: 'required - destination ip to send packet',
      payload: 'optional - packet payload defaults to empty string',
      ip_id: 'optional - defaults to 0xfeed',
      iface: 'optional - interface to send packet (defaults to eth0)',
      eth_src: 'optional - eth src value consumed by #construct_hsrp',
      eth_dst: 'optional - eth dst value consumed by #construct_hsrp',
      eth_proto: 'optional - eth proto value consumed by #construct_hsrp',
      ip_v: 'optional - ip v value consumed by #construct_hsrp',
      ip_hl: 'optional - ip hl value consumed by #construct_hsrp',
      ip_tos: 'optional - ip tos value consumed by #construct_hsrp',
      ip_len: 'optional - ip len value consumed by #construct_hsrp',
      ip_frag: 'optional - ip frag value consumed by #construct_hsrp',
      ip_ttl: 'optional - ip ttl value consumed by #construct_hsrp',
      ip_proto: 'optional - ip proto value consumed by #construct_hsrp',
      ip_sum: 'optional - ip sum value consumed by #construct_hsrp',
      udp_src_port: 'optional - udp src port value consumed by #construct_hsrp',
      udp_dst_port: 'optional - udp dst port value consumed by #construct_hsrp',
      udp_len: 'optional - udp len value consumed by #construct_hsrp',
      udp_sum: 'optional - udp sum value consumed by #construct_hsrp',
      hsrp_version: 'optional - hsrp version value consumed by #construct_hsrp',
      hsrp_opcode: 'optional - hsrp opcode value consumed by #construct_hsrp',
      hsrp_state: 'optional - hsrp state value consumed by #construct_hsrp',
      hsrp_hellotime: 'optional - hsrp hellotime value consumed by #construct_hsrp',
      hsrp_holdtime: 'optional - hsrp holdtime value consumed by #construct_hsrp',
      hsrp_priority: 'optional - hsrp priority value consumed by #construct_hsrp',
      hsrp_group: 'optional - hsrp group value consumed by #construct_hsrp',
      hsrp_reserved: 'optional - hsrp reserved value consumed by #construct_hsrp',
      hsrp_password: 'optional - hsrp password value consumed by #construct_hsrp',
      hsrp_addr: 'optional - hsrp addr value consumed by #construct_hsrp'
    )

    # Run construct icmp and return its result
    #{self}.construct_icmp(
      ip_saddr: 'required - source ip of packet',
      ip_daddr: 'required - destination ip to send packet',
      payload: 'optional - packet payload defaults to *ping*',
      ip_id: 'optional - defaults to 0xfeed',
      iface: 'optional - interface to send packet (defaults to eth0)',
      eth_src: 'optional - eth src value consumed by #construct_icmp',
      eth_dst: 'optional - eth dst value consumed by #construct_icmp',
      eth_proto: 'optional - eth proto value consumed by #construct_icmp',
      ip_v: 'optional - ip v value consumed by #construct_icmp',
      ip_hl: 'optional - ip hl value consumed by #construct_icmp',
      ip_tos: 'optional - ip tos value consumed by #construct_icmp',
      ip_len: 'optional - ip len value consumed by #construct_icmp',
      ip_frag: 'optional - ip frag value consumed by #construct_icmp',
      ip_ttl: 'optional - ip ttl value consumed by #construct_icmp',
      ip_proto: 'optional - ip proto value consumed by #construct_icmp',
      ip_sum: 'optional - ip sum value consumed by #construct_icmp',
      icmp_type: 'optional - icmp type value consumed by #construct_icmp',
      icmp_code: 'optional - icmp code value consumed by #construct_icmp',
      icmp_sum: 'optional - icmp sum value consumed by #construct_icmp'
    )

    # Run construct icmpv6 and return its result
    #{self}.construct_icmpv6(
      ip_saddr: 'required - source ip of packet',
      ip_daddr: 'required - destination ip to send packet',
      payload: 'optional - packet payload defaults to empty string',
      ip_id: 'optional - defaults to 0xfeed',
      iface: 'optional - interface to send packet (defaults to eth0)',
      eth_src: 'optional - eth src value consumed by #construct_icmpv6',
      eth_dst: 'optional - eth dst value consumed by #construct_icmpv6',
      eth_proto: 'optional - eth proto value consumed by #construct_icmpv6',
      ipv6_v: 'optional - ipv6 v value consumed by #construct_icmpv6',
      ipv6_class: 'optional - ipv6 class value consumed by #construct_icmpv6',
      ipv6_label: 'optional - ipv6 label value consumed by #construct_icmpv6',
      ipv6_len: 'optional - ipv6 len value consumed by #construct_icmpv6',
      ipv6_next: 'optional - ipv6 next value consumed by #construct_icmpv6',
      ipv6_hop: 'optional - ipv6 hop value consumed by #construct_icmpv6',
      ipv6_saddr: 'optional - ipv6 saddr value consumed by #construct_icmpv6',
      ipv6_daddr: 'optional - ipv6 daddr value consumed by #construct_icmpv6',
      icmpv6_type: 'optional - icmpv6 type value consumed by #construct_icmpv6',
      icmpv6_code: 'optional - icmpv6 code value consumed by #construct_icmpv6',
      icmpv6_sum: 'optional - icmpv6 sum value consumed by #construct_icmpv6'
    )

    # Run construct ip and return its result
    #{self}.construct_ip(
      ip_saddr: 'required - source ip of packet',
      ip_daddr: 'required - destination ip to send packet',
      payload: 'optional - packet payload defaults to empty string',
      ip_id: 'optional - defaults to 0xfeed',
      iface: 'optional - interface to send packet (defaults to eth0)',
      eth_src: 'optional - eth src value consumed by #construct_ip',
      eth_dst: 'optional - eth dst value consumed by #construct_ip',
      eth_proto: 'optional - eth proto value consumed by #construct_ip',
      ip_v: 'optional - ip v value consumed by #construct_ip',
      ip_hl: 'optional - ip hl value consumed by #construct_ip',
      ip_tos: 'optional - ip tos value consumed by #construct_ip',
      ip_len: 'optional - ip len value consumed by #construct_ip',
      ip_frag: 'optional - ip frag value consumed by #construct_ip',
      ip_ttl: 'optional - ip ttl value consumed by #construct_ip',
      ip_proto: 'optional - ip proto value consumed by #construct_ip',
      ip_sum: 'optional - ip sum value consumed by #construct_ip'
    )

    # Run construct ipv6 and return its result
    #{self}.construct_ipv6(
      ip_saddr: 'required - source ip of packet',
      ip_daddr: 'required - destination ip to send packet',
      payload: 'optional - packet payload defaults to empty string',
      ip_id: 'optional - defaults to 0xfeed',
      iface: 'optional - interface to send packet (defaults to eth0)',
      eth_src: 'optional - eth src value consumed by #construct_ipv6',
      eth_dst: 'optional - eth dst value consumed by #construct_ipv6',
      eth_proto: 'optional - eth proto value consumed by #construct_ipv6',
      ipv6_v: 'optional - ipv6 v value consumed by #construct_ipv6',
      ipv6_class: 'optional - ipv6 class value consumed by #construct_ipv6',
      ipv6_label: 'optional - ipv6 label value consumed by #construct_ipv6',
      ipv6_len: 'optional - ipv6 len value consumed by #construct_ipv6',
      ipv6_next: 'optional - ipv6 next value consumed by #construct_ipv6',
      ipv6_hop: 'optional - ipv6 hop value consumed by #construct_ipv6',
      ipv6_saddr: 'optional - ipv6 saddr value consumed by #construct_ipv6',
      ipv6_daddr: 'optional - ipv6 daddr value consumed by #construct_ipv6'
    )

    # Run construct tcp and return its result
    #{self}.construct_tcp(
      ip_saddr: 'required - source ip of packet',
      ip_daddr: 'required - destination ip to send packet',
      payload: 'optional - packet payload defaults to empty string',
      ip_id: 'optional - defaults to 0xfeed',
      iface: 'optional - interface to send packet (defaults to eth0)',
      eth_src: 'optional - eth src value consumed by #construct_tcp',
      eth_dst: 'optional - eth dst value consumed by #construct_tcp',
      eth_proto: 'optional - eth proto value consumed by #construct_tcp',
      ip_v: 'optional - ip v value consumed by #construct_tcp',
      ip_hl: 'optional - ip hl value consumed by #construct_tcp',
      ip_tos: 'optional - ip tos value consumed by #construct_tcp',
      ip_len: 'optional - ip len value consumed by #construct_tcp',
      ip_frag: 'optional - ip frag value consumed by #construct_tcp',
      ip_ttl: 'optional - ip ttl value consumed by #construct_tcp',
      ip_proto: 'optional - ip proto value consumed by #construct_tcp',
      ip_sum: 'optional - ip sum value consumed by #construct_tcp',
      tcp_src_port: 'optional - tcp src port value consumed by #construct_tcp',
      tcp_dst_port: 'optional - tcp dst port value consumed by #construct_tcp',
      tcp_seq: 'optional - tcp seq value consumed by #construct_tcp',
      tcp_ack: 'optional - tcp ack value consumed by #construct_tcp',
      tcp_hlen: 'optional - tcp hlen value consumed by #construct_tcp',
      tcp_reserved: 'optional - tcp reserved value consumed by #construct_tcp',
      tcp_ecn: 'optional - tcp ecn value consumed by #construct_tcp',
      tcp_flags: 'optional - tcp flags value consumed by #construct_tcp',
      tcp_win: 'optional - tcp win value consumed by #construct_tcp',
      tcp_sum: 'optional - tcp sum value consumed by #construct_tcp',
      tcp_urg: 'optional - tcp urg value consumed by #construct_tcp',
      tcp_opts: 'optional - tcp opts value consumed by #construct_tcp'
    )

    # Run construct udp and return its result
    #{self}.construct_udp(
      ip_saddr: 'required - source ip of packet',
      ip_daddr: 'required - destination ip to send packet',
      payload: 'optional - packet payload defaults to empty string',
      ip_id: 'optional - defaults to 0xfeed',
      iface: 'optional - interface to send packet (defaults to eth0)',
      eth_src: 'optional - eth src value consumed by #construct_udp',
      eth_dst: 'optional - eth dst value consumed by #construct_udp',
      eth_proto: 'optional - eth proto value consumed by #construct_udp',
      ip_v: 'optional - ip v value consumed by #construct_udp',
      ip_hl: 'optional - ip hl value consumed by #construct_udp',
      ip_tos: 'optional - ip tos value consumed by #construct_udp',
      ip_len: 'optional - ip len value consumed by #construct_udp',
      ip_frag: 'optional - ip frag value consumed by #construct_udp',
      ip_ttl: 'optional - ip ttl value consumed by #construct_udp',
      ip_proto: 'optional - ip proto value consumed by #construct_udp',
      ip_sum: 'optional - ip sum value consumed by #construct_udp',
      udp_src_port: 'optional - udp src port value consumed by #construct_udp',
      udp_dst_port: 'optional - udp dst port value consumed by #construct_udp',
      udp_len: 'optional - udp len value consumed by #construct_udp',
      udp_sum: 'optional - udp sum value consumed by #construct_udp'
    )

    # Run send and return its result
    #{self}.send(
      pkt: 'required - pkt returned from other #construct_<type> methods',
      iface: 'optional - interface to send packet (defaults to eth0)',
      socket: 'optional - local capability broker Unix socket path'
    )

    # Unprivileged TCP connect sweep (fallback when CAP_NET_RAW is missing).
    #{self}.tcp_connect_scan(
      hosts: 'required - Array of hostnames or IPs',
      targets: 'optional - alias for hosts',
      ports: 'optional - Array of ports (defaults to 80,443)',
      timeout: 'optional - connect timeout seconds (defaults to 2)'
    )

    # True when this process has CAP_NET_RAW (or /dev/bpf0 on BSD).
    #{self}.cap_net_raw?(
      iface: 'optional - interface name reserved for callers'
    )

    # Capture packets; falls back to tcpdump when CAP_NET_RAW is missing.
    #{self}.capture(
      iface: 'optional - interface (defaults to eth0)',
      count: 'optional - packet count (defaults to 8)',
      path: 'optional - output pcap path',
      timeout: 'optional - maximum capture duration in seconds',
      socket: 'optional - local capability broker Unix socket path'
    )

    # Print the AUTHOR(S) string for this module.
    #{self}.authors
  "
  constants.sort
end

.open_pcap_file(opts = {}) ⇒ Object

Supported Method Parameters

pcap = PWN::Plugins::Packet.open_pcap_file( path: 'required - path to packet capture file' )



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# File 'lib/pwn/plugins/packet.rb', line 27

public_class_method def self.open_pcap_file(opts = {})
  path = opts[:path].to_s.scrub.strip.chomp if File.exist?(opts[:path].to_s.scrub.strip.chomp)

  PacketFu::PcapFile.read_packets(path)
rescue StandardError => e
  raise e
end

.send(opts = {}) ⇒ Object

Supported Method Parameters

PWN::Plugins::Packet.send( pkt: 'required - pkt returned from other #construct_ methods', iface: 'optional - interface to send packet (defaults to eth0)', )



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# File 'lib/pwn/plugins/packet.rb', line 1089

public_class_method def self.send(opts = {})
  require 'pwn/plugins/capability_broker'
  require 'base64'
  pkt = opts.fetch(:pkt)
  pkt.recalc
  result = CapabilityBroker.request(operation: 'raw_send', iface: opts.fetch(:iface, 'eth0'),
                                    frame: Base64.strict_encode64(pkt.to_s), socket: opts[:socket])
  return result if result[:ok]

  result.merge(degraded: true, missing_capabilities: cap_net_raw? ? [] : ['CAP_NET_RAW'])
end

.tcp_connect_scan(opts = {}) ⇒ Object 



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# File 'lib/pwn/plugins/packet.rb', line 1101

public_class_method def self.tcp_connect_scan(opts = {})
  hosts = Array(opts[:hosts] || opts[:targets])
  ports = Array(opts[:ports]).map(&:to_i).reject(&:zero?)
  ports = [80, 443] if ports.empty?
  timeout = (opts[:timeout] || 2).to_f
  rows = hosts.product(ports).map do |host, port|
    open = begin
      sock = Socket.tcp(host, port, connect_timeout: timeout)
      sock.close
      true
    rescue StandardError
      false
    end
    { host: host, port: port, open: open }
  end
  { results: rows, degraded: true, fidelity: 'connect-scan (no raw sockets / custom IP flags)' }
end