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155 lines
7.3 KiB
Markdown
155 lines
7.3 KiB
Markdown
# 110,995 - Pentesting POP
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{% hint style="success" %}
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Learn & practice AWS Hacking:<img src="/.gitbook/assets/arte.png" alt="" data-size="line">[**HackTricks Training AWS Red Team Expert (ARTE)**](https://training.hacktricks.xyz/courses/arte)<img src="/.gitbook/assets/arte.png" alt="" data-size="line">\
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Learn & practice GCP Hacking: <img src="/.gitbook/assets/grte.png" alt="" data-size="line">[**HackTricks Training GCP Red Team Expert (GRTE)**<img src="/.gitbook/assets/grte.png" alt="" data-size="line">](https://training.hacktricks.xyz/courses/grte)
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<details>
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<summary>Support HackTricks</summary>
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* Check the [**subscription plans**](https://github.com/sponsors/carlospolop)!
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* **Join the** 💬 [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** us on **Twitter** 🐦 [**@hacktricks\_live**](https://twitter.com/hacktricks\_live)**.**
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* **Share hacking tricks by submitting PRs to the** [**HackTricks**](https://github.com/carlospolop/hacktricks) and [**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) github repos.
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</details>
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{% endhint %}
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## Informazioni di base
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**Post Office Protocol (POP)** è descritto come un protocollo nell'ambito del networking informatico e di Internet, utilizzato per l'estrazione e il **recupero di email da un server di posta remoto**, rendendole accessibili sul dispositivo locale. Posizionato all'interno del livello applicativo del modello OSI, questo protocollo consente agli utenti di recuperare e ricevere email. Il funzionamento dei **client POP** comporta tipicamente l'instaurazione di una connessione con il server di posta, il download di tutti i messaggi, la memorizzazione di questi messaggi localmente sul sistema client e successivamente la loro rimozione dal server. Sebbene ci siano tre iterazioni di questo protocollo, **POP3** si distingue come la versione più comunemente utilizzata.
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**Porte predefinite:** 110, 995(ssl)
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```
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PORT STATE SERVICE
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110/tcp open pop3
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```
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## Enumerazione
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### Acquisizione del Banner
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```bash
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nc -nv <IP> 110
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openssl s_client -connect <IP>:995 -crlf -quiet
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```
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## Manuale
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Puoi utilizzare il comando `CAPA` per ottenere le capacità del server POP3.
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## Automatizzato
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```bash
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nmap --script "pop3-capabilities or pop3-ntlm-info" -sV -port <PORT> <IP> #All are default scripts
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```
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Il plugin `pop3-ntlm-info` restituirà alcuni dati "**sensibili**" (versioni di Windows).
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### [Bruteforce POP3](../generic-methodologies-and-resources/brute-force.md#pop)
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## Sintassi POP
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Esempi di comandi POP da [qui](http://sunnyoasis.com/services/emailviatelnet.html)
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```bash
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POP commands:
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USER uid Log in as "uid"
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PASS password Substitue "password" for your actual password
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STAT List number of messages, total mailbox size
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LIST List messages and sizes
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RETR n Show message n
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DELE n Mark message n for deletion
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RSET Undo any changes
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QUIT Logout (expunges messages if no RSET)
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TOP msg n Show first n lines of message number msg
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CAPA Get capabilities
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```
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Esempio:
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```
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root@kali:~# telnet $ip 110
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+OK beta POP3 server (JAMES POP3 Server 2.3.2) ready
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USER billydean
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+OK
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PASS password
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+OK Welcome billydean
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list
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+OK 2 1807
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1 786
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2 1021
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retr 1
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+OK Message follows
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From: jamesbrown@motown.com
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Dear Billy Dean,
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Here is your login for remote desktop ... try not to forget it this time!
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username: billydean
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password: PA$$W0RD!Z
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```
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## Impostazioni Pericolose
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Da [https://academy.hackthebox.com/module/112/section/1073](https://academy.hackthebox.com/module/112/section/1073)
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| **Impostazione** | **Descrizione** |
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| ------------------------------ | ----------------------------------------------------------------------------------------- |
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| `auth_debug` | Abilita tutti i log di debug dell'autenticazione. |
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| `auth_debug_passwords` | Questa impostazione regola la verbosità dei log, le password inviate e lo schema viene registrato. |
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| `auth_verbose` | Registra i tentativi di autenticazione non riusciti e i loro motivi. |
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| `auth_verbose_passwords` | Le password utilizzate per l'autenticazione vengono registrate e possono anche essere troncate. |
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| `auth_anonymous_username` | Questo specifica il nome utente da utilizzare quando si accede con il meccanismo ANONYMOUS SASL. |
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## HackTricks Comandi Automatici
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```
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Protocol_Name: POP #Protocol Abbreviation if there is one.
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Port_Number: 110 #Comma separated if there is more than one.
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Protocol_Description: Post Office Protocol #Protocol Abbreviation Spelled out
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Entry_1:
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Name: Notes
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Description: Notes for POP
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Note: |
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Post Office Protocol (POP) is described as a protocol within the realm of computer networking and the Internet, which is utilized for the extraction and retrieval of email from a remote mail server**, making it accessible on the local device. Positioned within the application layer of the OSI model, this protocol enables users to fetch and receive email. The operation of POP clients typically involves establishing a connection to the mail server, downloading all messages, storing these messages locally on the client system, and subsequently removing them from the server. Although there are three iterations of this protocol, POP3 stands out as the most prevalently employed version.
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https://book.hacktricks.xyz/network-services-pentesting/pentesting-pop
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Entry_2:
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Name: Banner Grab
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Description: Banner Grab 110
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Command: nc -nv {IP} 110
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Entry_3:
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Name: Banner Grab 995
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Description: Grab Banner Secure
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Command: openssl s_client -connect {IP}:995 -crlf -quiet
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Entry_4:
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Name: Nmap
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Description: Scan for POP info
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Command: nmap --script "pop3-capabilities or pop3-ntlm-info" -sV -p 110 {IP}
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Entry_5:
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Name: Hydra Brute Force
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Description: Need User
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Command: hydra -l {Username} -P {Big_Passwordlist} -f {IP} pop3 -V
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Entry_6:
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Name: consolesless mfs enumeration
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Description: POP3 enumeration without the need to run msfconsole
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Note: sourced from https://github.com/carlospolop/legion
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Command: msfconsole -q -x 'use auxiliary/scanner/pop3/pop3_version; set RHOSTS {IP}; set RPORT 110; run; exit'
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```
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{% hint style="success" %}
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Impara e pratica il hacking AWS:<img src="/.gitbook/assets/arte.png" alt="" data-size="line">[**HackTricks Training AWS Red Team Expert (ARTE)**](https://training.hacktricks.xyz/courses/arte)<img src="/.gitbook/assets/arte.png" alt="" data-size="line">\
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Impara e pratica il hacking GCP: <img src="/.gitbook/assets/grte.png" alt="" data-size="line">[**HackTricks Training GCP Red Team Expert (GRTE)**<img src="/.gitbook/assets/grte.png" alt="" data-size="line">](https://training.hacktricks.xyz/courses/grte)
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<details>
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<summary>Supporta HackTricks</summary>
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* Controlla i [**piani di abbonamento**](https://github.com/sponsors/carlospolop)!
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* **Unisciti al** 💬 [**gruppo Discord**](https://discord.gg/hRep4RUj7f) o al [**gruppo telegram**](https://t.me/peass) o **seguici** su **Twitter** 🐦 [**@hacktricks\_live**](https://twitter.com/hacktricks\_live)**.**
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* **Condividi trucchi di hacking inviando PR ai** [**HackTricks**](https://github.com/carlospolop/hacktricks) e [**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) repos su github.
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</details>
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{% endhint %}
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