First swing at osx x64 meterpreter support

Author: bwatters-r7

modules/exploits/multi/ssh/sshexec.rb

@@ -35,11 +35,12 @@ def initialize
         },
       'Payload'          =>
         {
-          'Space'        => 4096,
+          'Space'        => 800000,
           'BadChars'     => "",
           'DisableNops'  => true
         },
       'Platform'         => %w{ linux osx python },
+      'CmdStagerFlavor'  => %w{ bourne echo printf curl wget },
       'Targets'          =>
         [
           [ 'Linux x86',
@@ -60,14 +61,20 @@ def initialize
               'Platform' => 'osx'
             }
           ],
+          [ 'OSX x64',
+            {
+              'Arch'     => ARCH_X64,
+              'Platform' => 'osx',
+              'CmdStagerFlavor'  => %w{curl wget}
+            }
+          ],
           [ 'Python',
             {
               'Arch'     => ARCH_PYTHON,
               'Platform' => 'python'
             }
           ]
         ],
-      'CmdStagerFlavor'  => %w{ bourne echo printf },
       'DefaultTarget'    => 0,
       # For the CVE
       'DisclosureDate'   => 'Jan 01 1999'
@@ -77,7 +84,7 @@ def initialize
       [
         OptString.new('USERNAME', [ true, "The user to authenticate as.", 'root' ]),
         OptString.new('PASSWORD', [ true, "The password to authenticate with.", '' ]),
-        OptString.new('RHOST', [ true, "The target address" ]),
+        Opt::RHOST('RHOST', [ true, "The target address" ]),
         Opt::RPORT(22)
       ], self.class
     )