Internal: Proving Grounds Windows Walkthrough

Nmap output

Nmap scan report for 192.168.167.40
Host is up (0.059s latency).
Not shown: 64500 closed tcp ports (conn-refused), 1023 filtered tcp ports (no-response)
PORT      STATE SERVICE       VERSION
53/tcp    open  domain        Microsoft DNS 6.0.6001 (17714650) (Windows Server 2008 SP1)
| dns-nsid: 
|_  bind.version: Microsoft DNS 6.0.6001 (17714650)
135/tcp   open  msrpc         Microsoft Windows RPC
139/tcp   open  netbios-ssn   Microsoft Windows netbios-ssn
445/tcp   open  microsoft-ds  Windows Server (R) 2008 Standard 6001 Service Pack 1 microsoft-ds (workgroup: WORKGROUP)
3389/tcp  open  ms-wbt-server Microsoft Terminal Service
|_ssl-date: 2025-10-16T18:06:03+00:00; 0s from scanner time.
| rdp-ntlm-info: 
|   Target_Name: INTERNAL
|   NetBIOS_Domain_Name: INTERNAL
|   NetBIOS_Computer_Name: INTERNAL
|   DNS_Domain_Name: internal
|   DNS_Computer_Name: internal
|   Product_Version: 6.0.6001
|_  System_Time: 2025-10-16T18:05:56+00:00
| ssl-cert: Subject: commonName=internal
| Issuer: commonName=internal
| Public Key type: rsa
| Public Key bits: 2048
| Signature Algorithm: sha1WithRSAEncryption
| Not valid before: 2025-01-05T19:52:51
| Not valid after:  2025-07-07T19:52:51
| MD5:   7c2b:85a9:1fe2:c264:4be8:ed3e:e16b:274a
|_SHA-1: 05e9:c5e9:7ac6:242e:0a18:ca56:e1b5:1c38:31db:d393
5357/tcp  open  http          Microsoft HTTPAPI httpd 2.0 (SSDP/UPnP)
|_http-title: Service Unavailable
|_http-server-header: Microsoft-HTTPAPI/2.0
49152/tcp open  msrpc         Microsoft Windows RPC
49153/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
49158/tcp open  msrpc         Microsoft Windows RPC
Service Info: Host: INTERNAL; OS: Windows; CPE: cpe:/o:microsoft:windows_server_2008::sp1, cpe:/o:microsoft:windows, cpe:/o:microsoft:windows_server_2008:r2

It’s vulnerable to eternalblue

Internal walkthrough, Got reverse shell, screenshot 1 — Internal, step 1

Using https://github.com/3ndG4me/AutoBlue-MS17-010 this to manually exploit. First we will create the payload

Internal walkthrough, Got reverse shell, screenshot 2 — Internal, step 2

Running the exploit

Got reverse shell

Got proof.txt (bd1917958b4f45361758a401429f64da)

Internal walkthrough, Got reverse shell, screenshot 5 — Internal, step 5

More walkthroughs

AlgernonWindows

Full walkthrough of the Algernon box on Offensive Security Proving Grounds (Windows). Enumeration across 21/ftp, 80/http, 135/msrpc, 139/netbios-ssn, 445/microsoft-ds?. Foothold to root using evil-winrm, kerberoasting, winpeas.

AuthbyWindows

Full walkthrough of the Authby box on Offensive Security Proving Grounds (Windows). Enumeration across 21/ftp, 242/http, 3145/zftp-admin, 3389/ms-wbt-server. Foothold to root using evil-winrm, kerberoasting, winpeas.

CraftWindows

Full walkthrough of the Craft box on Offensive Security Proving Grounds (Windows). Enumeration across 80/http. Foothold to root using evil-winrm, kerberoasting, winpeas.

AccessAD

Full walkthrough of the Access box on Offensive Security Proving Grounds (Active Directory). Enumeration across 53/domain, 80/http, 88/kerberos-sec, 135/msrpc, 139/netbios-ssn. Foothold to root using evil-winrm, kerberoasting, linpeas.

HeistAD

Full walkthrough of the Heist box on Offensive Security Proving Grounds (Active Directory). Enumeration across 53/domain, 135/msrpc, 139/netbios-ssn, 389/ldap, 445/microsoft-ds?. Foothold to root using evil-winrm, kerberoasting, linpeas.

HokkaidoAD

Full walkthrough of the Hokkaido box on Offensive Security Proving Grounds (Active Directory). Enumeration across 53/domain, 80/http, 88/kerberos-sec, 135/msrpc, 139/netbios-ssn. Foothold to root using evil-winrm, kerberoasting, linpeas.