thanx for ur help . But I have another question when I see hack-info tutorial video file . In this tutorial I saw that u upload an image from ur comp and use it for your avatar and to deface . So it mean an image will run on this site but maybe .htaccess of this site not allow us run image file as php file .

And also , when we upload an image from our comp to use for our avatar and there some code in this image to deface the site , but if the site chmod index file is not writeable (for example 644) , we cant make an image edit index file so we cant deface it ?