实训打靶记录(一)
2022-6-14 18:28:0 Author: y4tacker.github.io(查看原文) 阅读量:13 收藏

实训期间先搞开发再搞了渗透,现在开始渗透阶段了

信息收集

端口扫描

发现三个端口,暴露了web服务

用dirsearch进行扫描,发现有vendor目录,里面可能有composer生成的铭感信息

发现配置错误,正好能访问对应文件

获得web目录绝对路径

PHPmailer版本

5.2.16

存在漏洞利用点

kali里面发现漏洞利用点

存在wordpress站点

首页点击BLOG跳转到wordpress页面

wpscan尝试扫描漏洞

发现两个用户steven与michael

尝试爆破ssh密码

收集到的两个用户进行利用

1
hydra -L user.txt -P /usr/share/wordlists/rockyou.txt -F -V 192.168.10.131 ssh

成功得到michael的密码Michael

尝试ssh远程登录

mysql

查看mysql是否运行

获取mysql密码

在wordpress目录下wp-config.php获得了root用户的密码

登陆mysql

查看数据库

show database

查看wordpress当中的表

查看数据库用户并破解密码

$P$BqfBDRL7nB8b5G0aPRMiL.iSsn5YD00去somd5查询后得到steven密码pink84

ssh登陆steven用户并获取交互式shell

1
python -c 'import pty;pty.spawn("/bin/bash")'

sudo -l通过特权指令提权

提权

第二种方式:phpmailer获取web权限

这里用python脚本提权

这里对其修改改为一个php后门,方便后渗透

之后利用这个backdoor.php,获取虚拟终端,发现mysql为root用户运行,如果能通过mysql提权限那么就会获得root用户权限

UDF提权

在蚁剑使用mysql连接插件

mysql查询系统相关信息

得到mysql版本

获取到系统为64位系统

查看写入权限反正是root,就算无也可以改,发现可以写

1
show global variables like '%secure%';

查看mysql插件目录地址

udf一把梭哈

1
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INTO DUMPFILE '/usr/lib/mysql/plugin/udf_y4.so';

之后创建一个用户自定义函数即可

1
CREATE FUNCTION sys_eval RETURNS STRING SONAME 'udf_y4.so';

成功获得root权限

flag

flag1{b9bbcb33e11b80be759c4e844862482d} 首页service.html

flag2{fc3fd58dcdad9ab23faca6e9a36e581c} /var/www/flag2.txt

flag3{afc01ab56b50591e7dccf93122770cd2} 数据库

flag4{715dea6c055b9fe3337544932f2941ce} /root/flag4.txt

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文章来源: https://y4tacker.github.io/2022/06/14/year/2022/6/%E5%AE%9E%E8%AE%AD%E6%89%93%E9%9D%B6%E8%AE%B0%E5%BD%95-%E4%B8%80/
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