# Lame

#### Sobre esta maquina: HTB

Sistema Operativo: Linux

**Skills Usados**:&#x20;



* Samba 3.0.20 < 3.0.2 Command Execution



Metodologia:



Escaneo inicial de reconocimiento con nmap:

```
// 
❯ nmap -T4 -sS -Pn -p- --open -n 10.10.10.3 -oN first_scan


Starting Nmap 7.94SVN ( https://nmap.org ) at 2025-05-04 19:29 EDT
Stats: 0:00:32 elapsed; 0 hosts completed (1 up), 1 undergoing SYN Stealth Scan
SYN Stealth Scan Timing: About 12.45% done; ETC: 19:34 (0:03:45 remaining)
Stats: 0:01:38 elapsed; 0 hosts completed (1 up), 1 undergoing SYN Stealth Scan
SYN Stealth Scan Timing: About 48.19% done; ETC: 19:33 (0:01:45 remaining)
Stats: 0:02:29 elapsed; 0 hosts completed (1 up), 1 undergoing SYN Stealth Scan
SYN Stealth Scan Timing: About 90.62% done; ETC: 19:32 (0:00:15 remaining)
Nmap scan report for 10.10.10.3
Host is up (0.16s latency).
Not shown: 65530 filtered tcp ports (no-response)
Some closed ports may be reported as filtered due to --defeat-rst-ratelimit
PORT STATE SERVICE
21/tcp open ftp
22/tcp open ssh
139/tcp open netbios-ssn
445/tcp open microsoft-ds
3632/tcp open distccd
```



Hacemos Escaneo de versiones y ejecucion de Scripts especifico en los puertos abiertos:

```
// 
❯ nmap -T4 -sS -Pn -p21,22,139,445,3632 -sVC -n 10.10.10.3 -oN sV_scan

Starting Nmap 7.94SVN ( https://nmap.org ) at 2025-05-04 19:34 EDT
Stats: 0:00:42 elapsed; 0 hosts completed (1 up), 1 undergoing Script Scan
NSE Timing: About 99.86% done; ETC: 19:35 (0:00:00 remaining)
Nmap scan report for 10.10.10.3
Host is up (0.16s latency).
PORT STATE SERVICE VERSION
21/tcp open ftp vsftpd 2.3.4
| ftp-syst:
| STAT:
| FTP server status:
| Connected to 10.10.14.3
| Logged in as ftp
| TYPE: ASCII
| No session bandwidth limit
| Session timeout in seconds is 300
| Control connection is plain text
| Data connections will be plain text
| vsFTPd 2.3.4 - secure, fast, stable
|_End of status
|ftp-anon: Anonymous FTP login allowed (FTP code 230)
22/tcp open ssh OpenSSH 4.7p1 Debian 8ubuntu1 (protocol 2.0)
| ssh-hostkey:
| 1024 60:0f:cf:e1:c0:5f:6a:74:d6:90:24:fa:c4:d5:6c:cd (DSA)
| 2048 56:56:24:0f:21:1d:de:a7:2b:ae:61:b1:24:3d:e8:f3 (RSA)
139/tcp open netbios-ssn Samba smbd 3.X - 4.X (workgroup: WORKGROUP)
445/tcp open netbios-ssn Samba smbd 3.0.20-Debian (workgroup: WORKGROUP)
3632/tcp open distccd distccd v1 ((GNU) 4.2.4 (Ubuntu 4.2.4-1ubuntu4))
Service Info: OSs: Unix, Linux; CPE: cpe:/o:linux:linux_kernel
Host script results:
|smb2-time: Protocol negotiation failed (SMB2)
| smb-security-mode:
| account_used: guest
| authentication_level: user
| challenge_response: supported
| message_signing: disabled (dangerous, but default)
| smb-os-discovery:
| OS: Unix (Samba 3.0.20-Debian)
| Computer name: lame
| NetBIOS computer name:
| Domain name: hackthebox.gr
| FQDN: lame.hackthebox.gr
|_ System time: 2025-05-04T19:35:17-04:00
|_clock-skew: mean: 2h00m12s, deviation: 2h49m45s, median: 9
```



El puerto 21 tiene el ingreso anonimo permitido asi que ingresamos:

```
// 
❯ ftp 10.10.10.3

Connected to 10.10.10.3.
220 (vsFTPd 2.3.4)
Name (10.10.10.3:guerrerove): anonymous
331 Please specify the password.
Password:
230 Login successful.
Remote system type is UNIX.
Using binary mode to transfer files.
ftp>
```

Intentamos ejecutar comandos pero no nos permites, buscaremos vulnerabilidades con searchsploit:

```
// 
❯ searchsploit vsftpd 2.3.4

Exploit Title | Path

vsftpd 2.3.4 - Backdoor Command Execution | unix/remote/49757.py
vsftpd 2.3.4 - Backdoor Command Execution (Metasploit) | unix/remote/17491.rb
```

Conseguimos estas vulnerabilidades así que intentamos explotarlas:

Intentamos usar el primer script pero después de un largo rato no funciono, asi que ejecutaremos el modulo en metasploit.

<figure><img src="https://1413476267-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdQjFWbix88RD8ccosYti%2Fuploads%2FjmaCCvfcH3VY6xS1332W%2FScreenshot%20(1133).png?alt=media&#x26;token=b5fc2289-a3e6-41b8-a940-99f5ab462bb8" alt=""><figcaption></figcaption></figure>

<figure><img src="https://1413476267-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdQjFWbix88RD8ccosYti%2Fuploads%2FVeFsdc6Ym7dMBvbFiRPJ%2FScreenshot%20(1134).png?alt=media&#x26;token=aee60748-a914-462a-9800-14bec5208daf" alt=""><figcaption></figcaption></figure>

<figure><img src="https://1413476267-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdQjFWbix88RD8ccosYti%2Fuploads%2FuPxNP8oBGeyblTrJgz40%2FScreenshot%20(1135).png?alt=media&#x26;token=0918dfe6-cd0e-4071-bb19-30e15752953f" alt=""><figcaption><p>No tuvimos exito con el primer exploit encontrado.</p></figcaption></figure>

Tampoco tuvimos exito con Metasploit, intentaremos con otro puerto, esta vez nos enfocaremos en SMB:

```
// 
❯ searchsploit samba 3.0.20

Exploit Title | Path

Samba 3.0.10 < 3.3.5 - Format String / Security Bypass | multiple/remote/10095.txt
Samba 3.0.20 < 3.0.25rc3 - 'Username' map script' Command Execution (Metasploit) | unix/remote/16320.rb
Samba < 3.0.20 - Remote Heap Overflow | linux/remote/7701.txt
Samba < 3.6.2 (x86) - Denial of Service (PoC) | linux_x86/dos/36741.py
```

Ejecutaremos el modulo en Metasploit:&#x20;



<figure><img src="https://1413476267-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdQjFWbix88RD8ccosYti%2Fuploads%2FDLfvlUwpkt9VlrHiplF2%2FScreenshot%20(1136).png?alt=media&#x26;token=7abac5d0-aeb3-4bb9-a8fa-452428b10bf8" alt=""><figcaption><p>Seleccionando el nuevo Modulo conseguido.</p></figcaption></figure>

<figure><img src="https://1413476267-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdQjFWbix88RD8ccosYti%2Fuploads%2FMGW7Nh8aW1CwCKJhqmEK%2FScreenshot%20(1137).png?alt=media&#x26;token=5d9acc45-c415-4e4c-b969-81ce3df719aa" alt=""><figcaption><p>Asignando Lhosts y Rhosts.</p></figcaption></figure>

<figure><img src="https://1413476267-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdQjFWbix88RD8ccosYti%2Fuploads%2FZo2NyaMxNPRdOtOOpTll%2FScreenshot%20(1138).png?alt=media&#x26;token=8f4fdb21-e95b-48db-8cfc-6cd3a5ce9a97" alt=""><figcaption><p>Ingresamos al sistema.</p></figcaption></figure>

Funciono el modulo y estamos en la maquina como root, buscamos las Flags:

```
// 
script /dev/null -c bash

root@lame:/home# ls

ftp makis service user

root@lame:/home# cd user

root@lame:/home/user# ls

root@lame:/home/user# cd ..

root@lame:/home# cd makis

root@lame:/home/makis# ls

user.txt

root@lame:/home/makis# cat user.txt

3493cdfeea702375fa941436919261ff

Ahora buscamos la flag de ROOT:

root@lame:/home/makis# cd /root

root@lame:/root# ls

Desktop reset_logs.sh root.txt vnc.log

root@lame:/root# cat root.txt

1737d3800272587a93dd1a30147b983c
```

Y así dariamos por terminada la maquina Lame.
