Pass21【数组绕过+“/.”绕过】$is_upload = false; $msg = null; if(!empty($_FILES['upload_file'])){ //检查MIME $allow_type = array('image/jpeg','image/png','image/gif'); if(!in_array($_FILES['upload_fil
Pass20【“/.”结尾法 和 POST方法%00截断2】$is_upload = false; $msg = null; if (isset($_POST['submit'])) { if (file_exists(UPLOAD_PATH)) { $deny_ext = array("php","php5","php4","php3","php2","html","ht
Pass14-16图形马制作其实这三关都可以通过上传图形马的方式来解决，但上传图形马之后还需要一个php文件来include这该题中可以修改利用readme个图形马的内容php，那么接下来就介绍制作图形马的方法：cmd下执行命令powershell不行copy gg.jpg/b+base.php/a picma.jpg这种方法比较简单，但是有时因为图片不确定的原因可能会出一些错误，所以第二种方法比
Pass14【检查文件的前两字节】function getReailFileType($filename){ $file = fopen($filename, "rb"); $bin = fread($file, 2); //只读2字节 fclose($file); $strInfo = @unpack("C2chars", $bin); $type
Pass11【双写绕过】$is_upload = false; $msg = null; if (isset($_POST['submit'])) { if (file_exists(UPLOAD_PATH)) { $deny_ext = array("php","php5","php4","php3","php2","html","htm","phtml","pht","
Pass9【::$DATA（Windows）】$is_upload = false; $msg = null; if (isset($_POST['submit'])) { if (file_exists(UPLOAD_PATH)) { $deny_ext = array(".php",".php5",".php4",".php3",".php2",".html",".ht
Pass6【大小写绕过】这关就是在Pass4的基础上又禁用了.htaccess，可是没有限制大小写。$is_upload = false; $msg = null; if (isset($_POST['submit'])) { if (file_exists(UPLOAD_PATH)) { $deny_ext = array(".php",".php5",".php4","
Pass5【.user.ini】$is_upload = false; $msg = null; if (isset($_POST['submit'])) { if (file_exists(UPLOAD_PATH)) { $deny_ext = array(".php",".php5",".php4",".php3",".php2",".html",".htm",".ph
Pass4【.htaccess】这一关在Pass3的基础上，禁用了一切可以直接代替的后缀名，可是没有禁.htaccess$is_upload = false; $msg = null; if (isset($_POST['submit'])) { if (file_exists(UPLOAD_PATH)) { $deny_ext = array(".php",".php5"
Pass1【前端验证】这关是一个前端后缀名绕过：function checkFile() { var file = document.getElementsByName('upload_file')[0].value; if (file == null || file == "") { alert("请选择要上传的文件!"); return fals
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