新手小白记录一下思路，大佬勿喷

第一关-前端绕过

我们上传一个php文件发现不让上传，然后burp抓包发现没有数据包，那么推断这是前端校验。

我们上传一个jpg后缀的php文件上去burp抓包，发现可以抓到数据包，我们改为php后缀后放过。

成功上传

第二关-文件类型绕过

我们上传一个php文件尝试一下

?提示文件类型不正确

查看提示

那应该是文件的类型，我们修改类型试一下

?上传成功

第三关-文件名绕过

还是一样先上传一个php文件，发现进行了黑名单处理，phtml,php3,php4,php5,pht没有禁止，在apache配置文件中当php解析

?我们上传发现可以上传，服务器原因没有解析.

要在apache的httpd.conf中有如下配置代码：AddType application/x-httpd-php .php .phtml .phps .php5 .pht，如果不配置他是无法解析php5代码的，访问的时候就是一个空白页（就是我这种情况）

第四关-.htaccess绕过

上传一个php文件，这里他说是不允许此文件，上传jpg可以上传，php不允许

查看一下源码，好家伙，这是把能想到的都写进来了啊，不过发现htacc文件没有被禁用

“.php",".php5",".php4",".php3",".php2","php1",".html",".htm",".phtml",".pht",".pHp",".pHp5",".pHp4",".pHp3",".pHp2","pHp1",".Html",".Htm",".pHtml",".jsp",".jspa",".jspx",".jsw",".jsv",".jspf",".jtml",".jSp",".jSpx",".jSpa",".jSw",".jSv",".jSpf",".jHtml",".asp",".aspx",".asa",".asax",".ascx",".ashx",".asmx",".cer",".aSp",".aSpx",".aSa",".aSax",".aScx",".aShx",".aSmx",".cEr",".sWf",".swf"

不过发现.htaccess文件没有被禁

这种情况，我们可以尝试上传一个.htaccess配置文件，将phpinfo.png图片当作php代码进行解析，首先创建一个.htaccess文件，里面写上代码 <FilesMatch "phpinfo.png"> SetHandler application/x-httpd-php

第五关-大小写绕过

这次首先看一下源码，发现htaccess也被禁用

".php",".php5",".php4",".php3",".php2",".html",".htm",".phtml",".pht",".pHp",".pHp5",".pHp4",".pHp3",".pHp2",".Html",".Htm",".pHtml",".jsp",".jspa",".jspx",".jsw",".jsv",".jspf",".jtml",".jSp",".jSpx",".jSpa",".jSw",".jSv",".jSpf",".jHtml",".asp",".aspx",".asa",".asax",".ascx",".ashx",".asmx",".cer",".aSp",".aSpx",".aSa",".aSax",".aScx",".aShx",".aSmx",".cEr",".sWf",".swf",".htaccess"