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news 2026/4/7 10:39:05

网站建设企业策划书,网站seo李守洪排名大师,wordpress jiu,做网站工资待遇题目页面显示为文件上传随便上传一个文件看看上传一个文本文件显示上传了一个图片显示上传包含一句话木马的图片上传了一个包含php一句话木马的文件，显示如上换一个写法上传成功尝试上传.htaccess，上传失败，用抓包修改文件后缀 …

题目

页面显示为文件上传

随便上传一个文件看看

上传一个文本文件显示

上传了一个图片显示

上传包含一句话木马的图片

上传了一个包含php一句话木马的文件，显示如上

换一个写法

上传成功

尝试上传.htaccess，上传失败，用抓包修改文件后缀

返回题目首页，找到了题目源码

<?php
session_start();
echo "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" /> 
<title>Upload</title>
<form action=\"\" method=\"post\" enctype=\"multipart/form-data\">
上传文件<input type=\"file\" name=\"uploaded\" />
<input type=\"submit\" name=\"submit\" value=\"上传\" />
</form>";
error_reporting(0);
if(!isset($_SESSION['user'])){$_SESSION['user'] = md5((string)time() . (string)rand(100, 1000));
}
if(isset($_FILES['uploaded'])) {$target_path  = getcwd() . "/upload/" . md5($_SESSION['user']);$t_path = $target_path . "/" . basename($_FILES['uploaded']['name']);$uploaded_name = $_FILES['uploaded']['name'];$uploaded_ext  = substr($uploaded_name, strrpos($uploaded_name,'.') + 1);$uploaded_size = $_FILES['uploaded']['size'];$uploaded_tmp  = $_FILES['uploaded']['tmp_name'];if(preg_match("/ph/i", strtolower($uploaded_ext))){die("后缀名不能有ph！");}else{if ((($_FILES["uploaded"]["type"] == "") || ($_FILES["uploaded"]["type"] == "image/jpeg") || ($_FILES["uploaded"]["type"] == "image/pjpeg")) && ($_FILES["uploaded"]["size"] < 2048)){$content = file_get_contents($uploaded_tmp);if(preg_match("/\<\?/i", $content)){die("诶，别蒙我啊，这标志明显还是php啊");}else{mkdir(iconv("UTF-8", "GBK", $target_path), 0777, true);move_uploaded_file($uploaded_tmp, $t_path);echo "{$t_path} succesfully uploaded!";}}else{die("上传类型也太露骨了吧！");}}
}
?>

文件后缀名为image/jpeg，抓包修改文件后缀名