Change the way disassemble works so it works on FreeBSD.

It did not work previously because FreeBSD does not support echo -ne


git-svn-id: file:///home/svn/incoming/trunk@3285 4d416f70-5f16-0410-b530-b9f4589650da

lib/rex/assembly/nasm.rb

@@ -63,9 +63,11 @@ class Nasm
 	def self.disassemble(raw)
 		check
 
+		# Race condition?! You bet!
 		tmp = Tempfile.new('nasmout').path
+		File.open(tmp, "wb") { |f| f.write(raw) }
 
-		p = ::IO.popen("echo -ne \"" + Rex::Text.to_hex(raw) + "\" > #{tmp} && ndisasm -u #{tmp}")
+		p = ::IO.popen("ndisasm -u #{tmp}")
 		o = ''
 
 		begin