实训打靶记录(一)

(Updated: )
PTES

实训靶机-1

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

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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

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/** MySQL database username */
define('DB_USER', 'root');

/** MySQL database password */
define('DB_PASSWORD', 'R@v3nSecurity');

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

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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

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show global variables like '%secure%';

查看mysql插件目录地址

udf一把梭哈

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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

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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