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120 lines
4.5 KiB
Markdown
120 lines
4.5 KiB
Markdown
# 110,995 - Pentesting POP
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{{#include ../banners/hacktricks-training.md}}
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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 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 usare 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-hacking/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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Sure! Please provide the text you would like me to translate.
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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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## Registrazione delle Password
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I server POP con l'impostazione **`auth_debug`** abilitata aumenteranno i log generati. Tuttavia, se **`auth_debug_passwords`** o **`auth_verbose_passwords`** sono impostati su **`true`**, le password potrebbero essere registrate anche in chiaro in quei log.
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## Comandi Automatici HackTricks
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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.wiki/en/network-services-pentesting/pentesting-pop.html
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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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{{#include ../banners/hacktricks-training.md}}
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