# 110,995 - Pentesting POP {% hint style="success" %} Learn & practice AWS Hacking:[**HackTricks Training AWS Red Team Expert (ARTE)**](https://training.hacktricks.xyz/courses/arte)\ Learn & practice GCP Hacking: [**HackTricks Training GCP Red Team Expert (GRTE)**](https://training.hacktricks.xyz/courses/grte)
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{% embed url="https://discord.gg/tryhardsecurity" %} *** ## Informazioni di base **Post Office Protocol (POP)** è descritto come un protocollo nell'ambito delle reti informatiche 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. **Porte predefinite:** 110, 995(ssl) ``` PORT STATE SERVICE 110/tcp open pop3 ``` ## Enumerazione ### Acquisizione del Banner ```bash nc -nv 110 openssl s_client -connect :995 -crlf -quiet ``` ## Manuale Puoi utilizzare il comando `CAPA` per ottenere le capacità del server POP3. ## Automatizzato ```bash nmap --script "pop3-capabilities or pop3-ntlm-info" -sV -port #All are default scripts ``` Il plugin `pop3-ntlm-info` restituirà alcuni dati "**sensibili**" (versioni di Windows). ### [Bruteforce POP3](../generic-methodologies-and-resources/brute-force.md#pop) ## Sintassi POP Esempi di comandi POP da [qui](http://sunnyoasis.com/services/emailviatelnet.html) ```bash POP commands: USER uid Log in as "uid" PASS password Substitue "password" for your actual password STAT List number of messages, total mailbox size LIST List messages and sizes RETR n Show message n DELE n Mark message n for deletion RSET Undo any changes QUIT Logout (expunges messages if no RSET) TOP msg n Show first n lines of message number msg CAPA Get capabilities ``` Esempio: ``` root@kali:~# telnet $ip 110 +OK beta POP3 server (JAMES POP3 Server 2.3.2) ready USER billydean +OK PASS password +OK Welcome billydean list +OK 2 1807 1 786 2 1021 retr 1 +OK Message follows From: jamesbrown@motown.com Dear Billy Dean, Here is your login for remote desktop ... try not to forget it this time! username: billydean password: PA$$W0RD!Z ``` ## Impostazioni Pericolose Da [https://academy.hackthebox.com/module/112/section/1073](https://academy.hackthebox.com/module/112/section/1073) | **Impostazione** | **Descrizione** | | ------------------------------ | ----------------------------------------------------------------------------------------- | | `auth_debug` | Abilita tutti i log di debug dell'autenticazione. | | `auth_debug_passwords` | Questa impostazione regola la verbosità dei log, le password inviate e lo schema viene registrato. | | `auth_verbose` | Registra i tentativi di autenticazione non riusciti e i loro motivi. | | `auth_verbose_passwords` | Le password utilizzate per l'autenticazione vengono registrate e possono anche essere troncate. | | `auth_anonymous_username` | Questo specifica il nome utente da utilizzare quando si accede con il meccanismo ANONYMOUS SASL. | **Try Hard Security Group**
{% embed url="https://discord.gg/tryhardsecurity" %} ## HackTricks Comandi Automatici ``` Protocol_Name: POP #Protocol Abbreviation if there is one. Port_Number: 110 #Comma separated if there is more than one. Protocol_Description: Post Office Protocol #Protocol Abbreviation Spelled out Entry_1: Name: Notes Description: Notes for POP Note: | 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. https://book.hacktricks.xyz/network-services-pentesting/pentesting-pop Entry_2: Name: Banner Grab Description: Banner Grab 110 Command: nc -nv {IP} 110 Entry_3: Name: Banner Grab 995 Description: Grab Banner Secure Command: openssl s_client -connect {IP}:995 -crlf -quiet Entry_4: Name: Nmap Description: Scan for POP info Command: nmap --script "pop3-capabilities or pop3-ntlm-info" -sV -p 110 {IP} Entry_5: Name: Hydra Brute Force Description: Need User Command: hydra -l {Username} -P {Big_Passwordlist} -f {IP} pop3 -V Entry_6: Name: consolesless mfs enumeration Description: POP3 enumeration without the need to run msfconsole Note: sourced from https://github.com/carlospolop/legion Command: msfconsole -q -x 'use auxiliary/scanner/pop3/pop3_version; set RHOSTS {IP}; set RPORT 110; run; exit' ``` {% hint style="success" %} Impara e pratica il hacking AWS:[**HackTricks Training AWS Red Team Expert (ARTE)**](https://training.hacktricks.xyz/courses/arte)\ Impara e pratica il hacking GCP: [**HackTricks Training GCP Red Team Expert (GRTE)**](https://training.hacktricks.xyz/courses/grte)
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