Minor edits
jiuweigui
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##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# web site for more information on licensing and terms of use.
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# http://metasploit.com/
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##
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require 'msf/core'
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require 'rex'
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require 'msf/core/post/windows/registry'
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require 'time'
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class Metasploit3 < Msf::Post
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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 Prefetch File Information',
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'Description' => %q{This module gathers prefetch file information from WinXP & Win7 systems.},
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'License' => MSF_LICENSE,
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'Author' => ['TJ Glad <fraktaali[at]gmail.com>'],
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'Platform' => ['win'],
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'SessionType' => ['meterpreter']
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))
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end
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# Checks if Prefetch registry key exists and what value it has.
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def prefetch_key_value()
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reg_key = session.sys.registry.open_key(HKEY_LOCAL_MACHINE, "SYSTEM\\CurrentControlSet\\Control\\Session\ Manager\\Memory\ Management\\PrefetchParameters", KEY_READ)
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key_value = reg_key.query_value("EnablePrefetcher").data
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if key_value == 0
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print_error("EnablePrefetcher Value: (0) = Disabled (Non-Default).")
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elsif key_value == 1
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print_good("EnablePrefetcher Value: (1) = Application launch prefetching enabled (Non-Default).")
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elsif key_value == 2
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print_good("EnablePrefetcher Value: (2) = Boot prefetching enabled (Non-Default).")
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elsif key_value == 3
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print_good("EnablePrefetcher Value: (3) = Applaunch and boot enabled (Default Value).")
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else
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print_error("No proper value set so information should be taken with a grain of salt.")
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end
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reg_key.close
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end
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def gather_info(name_offset, hash_offset, lastrun_offset, runcount_offset, filename)
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# This function seeks and gathers information from specific offsets.
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h = client.railgun.kernel32.CreateFileA(filename, "GENERIC_READ", "FILE_SHARE_DELETE|FILE_SHARE_READ|FILE_SHARE_WRITE", nil, "OPEN_EXISTING", "FILE_ATTRIBUTE_NORMAL", 0)
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if h['GetLastError'] != 0
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print_error("Error opening a file handle.")
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return nil
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else
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handle = h['return']
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# Finds the filename from the prefetch file
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client.railgun.kernel32.SetFilePointer(handle, name_offset, 0, nil)
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name = client.railgun.kernel32.ReadFile(handle, 60, 60, 4, nil)
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x = name['lpBuffer']
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pname = x.slice(0..x.index("\x00\x00"))
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# Finds the run count from the prefetch file
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client.railgun.kernel32.SetFilePointer(handle, runcount_offset, 0, nil)
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count = client.railgun.kernel32.ReadFile(handle, 4, 4, 4, nil)
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prun = count['lpBuffer'].unpack('L*')
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# FIXME: Finds the FILETIME offset and converts it.
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# The time conversion is currently a bit confusing.
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# ATM You have to add/substract your timezone from the
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# time it prints out. That time is the one from the pf
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# file and represents the time on your timezone
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# i.e. if timestamp is 2013-07-13 21:00:13 and i'm on +2
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# then the correct time is 2013-07-13 19:00:13
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client.railgun.kernel32.SetFilePointer(handle, lastrun_offset, 0, 0)
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tm = client.railgun.kernel32.ReadFile(handle, 8, 8, 4, nil)
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filetime = tm['lpBuffer'].unpack('h*')[0].reverse.to_i(16)
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xtime = ((filetime.to_i - 116444556000000000) / 10000000)
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ptime = Time.at(xtime).utc.to_s
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# Finds the hash.
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client.railgun.kernel32.SetFilePointer(handle, hash_offset, 0, 0)
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hh = client.railgun.kernel32.ReadFile(handle, 4, 4, 4, nil)
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phash = hh['lpBuffer'].unpack('h*')[0].reverse
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print_line("%s\t\t %s\t\t %08s\t %-29s" % [ptime[0..-4], prun[0], phash, pname])
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client.railgun.kernel32.CloseHandle(handle)
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end
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end
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def run
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print_status("Prefetch Gathering started.")
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if not is_admin?
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print_error("You don't have enough privileges. Try getsystem.")
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return nil
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end
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begin
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sysnfo = client.sys.config.sysinfo['OS']
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# Check to see what Windows Version is running.
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# Needed for offsets.
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# Tested on WinXP and Win7 systems. Should work on WinVista & Win2k3..
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# http://www.forensicswiki.org/wiki/Prefetch
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# http://www.forensicswiki.org/wiki/Windows_Prefetch_File_Format
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if sysnfo =~/(Windows XP)/ # Offsets for WinXP
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print_good("Detected Windows XP")
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name_offset = 0x10
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hash_offset = 0x4C
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lastrun_offset = 0x78
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runcount_offset = 0x90
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elsif sysnfo =~/(Windows 7)/ # Offsets for Win7
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print_good("Detected Windows 7")
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name_offset = 0x10
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hash_offset = 0x4C
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lastrun_offset = 0x80
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runcount_offset = 0x98
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else
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print_error("No offsets for the target Windows version.")
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return nil
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end
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print_status("Searching for Prefetch Hive Value.")
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prefetch_key_value
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sysroot = client.fs.file.expand_path("%SYSTEMROOT%")
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full_path = sysroot + "\\Prefetch\\"
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file_type = "*.pf"
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print_line("\nLatest Run Time\t\t\tRun Count\tHash\t\tFilename\n")
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getfile_prefetch_filenames = client.fs.file.search(full_path,file_type,recurse=false,timeout=-1)
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getfile_prefetch_filenames.each do |file|
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if file.empty? or file.nil?
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print_error("No files or not enough privileges.")
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return nil
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else
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filename = File.join(file['path'], file['name'])
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gather_info(name_offset, hash_offset, lastrun_offset, runcount_offset, filename)
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end
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end
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end
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print_good("Finished gathering information from prefetch files.")
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end
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end
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@ -27,10 +27,8 @@ class Metasploit3 < Msf::Post
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end
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# Checks if Prefetch registry key exists and what value it has.
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def prefetch_key_value()
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def prefetch_key_value()
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# Checks if Prefetch registry key exists and what value it has.
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reg_key = session.sys.registry.open_key(HKEY_LOCAL_MACHINE, "SYSTEM\\CurrentControlSet\\Control\\Session\ Manager\\Memory\ Management\\PrefetchParameters", KEY_READ)
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key_value = reg_key.query_value("EnablePrefetcher").data
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@ -65,18 +63,16 @@ class Metasploit3 < Msf::Post
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end
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reg_key.close
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end
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def gather_prefetch_info(name_offset, hash_offset, lastrun_offset, runcount_offset, filename)
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def gather_prefetch_info(name_offset, hash_offset, lastrun_offset, runcount_offset, filename)
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# This function seeks and gathers information from specific offsets.
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h = client.railgun.kernel32.CreateFileA(filename, "GENERIC_READ", "FILE_SHARE_DELETE|FILE_SHARE_READ|FILE_SHARE_WRITE", nil, "OPEN_EXISTING", "FILE_ATTRIBUTE_NORMAL", 0)
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if h['GetLastError'] != 0
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print_error("Error opening a file handle.")
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return nil
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else
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handle = h['return']
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# Finds the filename from the prefetch file
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@ -120,7 +116,7 @@ class Metasploit3 < Msf::Post
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begin
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sysnfo = client.sys.config.sysinfo['OS']
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sysnfo = client.sys.config.sysinfo['OS']
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# Check to see what Windows Version is running.
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# Needed for offsets.
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