环境准备：构建完善的安全渗透测试环境：推荐工具、资源和下载链接_渗透测试靶机下载-CSDN博客

一、upload-labs 靶场的第7关

先进行代码审计

$is_upload = false;
$msg = null;
if (isset($_POST['submit'])) {if (file_exists($UPLOAD_ADDR)) {$deny_ext = array(".php",".php5",".php4",".php3",".php2",".html",".htm",".phtml",".pHp",".pHp5",".pHp4",".pHp3",".pHp2",".Html",".Htm",".pHtml",".jsp",".jspa",".jspx",".jsw",".jsv",".jspf",".jtml",".jSp",".jSpx",".jSp