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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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## Basic Information
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**Post Office Protocol (POP)** é descrito como um protocolo dentro do âmbito de redes de computadores e da Internet, que é utilizado para a extração e **recuperação de e-mails de um servidor de e-mail remoto**, tornando-os acessíveis no dispositivo local. Posicionado dentro da camada de aplicação do modelo OSI, este protocolo permite que os usuários busquem e recebam e-mails. A operação dos **clientes POP** geralmente envolve estabelecer uma conexão com o servidor de e-mail, baixar todas as mensagens, armazenar essas mensagens localmente no sistema do cliente e, subsequentemente, removê-las do servidor. Embora existam três iterações deste protocolo, **POP3** se destaca como a versão mais amplamente utilizada.
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**Portas padrão:** 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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## Enumeração
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### Captura de 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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## Manual
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Você pode usar o comando `CAPA` para obter as capacidades do servidor POP3.
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## Automated
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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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O plugin `pop3-ntlm-info` retornará alguns dados "**sensíveis**" (versões do Windows).
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### [Bruteforce POP3](../generic-methodologies-and-resources/brute-force.md#pop)
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## Sintaxe POP
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Exemplos de comandos POP [aqui](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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Exemplo:
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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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## Configurações Perigosas
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De [https://academy.hackthebox.com/module/112/section/1073](https://academy.hackthebox.com/module/112/section/1073)
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| **Configuração** | **Descrição** |
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| ------------------------------ | -------------------------------------------------------------------------------------- |
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| `auth_debug` | Habilita todos os logs de depuração de autenticação. |
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| `auth_debug_passwords` | Esta configuração ajusta a verbosidade dos logs, as senhas enviadas e o esquema é registrado. |
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| `auth_verbose` | Registra tentativas de autenticação malsucedidas e suas razões. |
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| `auth_verbose_passwords` | As senhas usadas para autenticação são registradas e também podem ser truncadas. |
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| `auth_anonymous_username` | Isso especifica o nome de usuário a ser usado ao fazer login com o mecanismo ANONYMOUS SASL. |
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## Comandos Automáticos 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.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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Aprenda e pratique 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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Aprenda e pratique 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>Support HackTricks</summary>
|
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|
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* Confira os [**planos de assinatura**](https://github.com/sponsors/carlospolop)!
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* **Junte-se ao** 💬 [**grupo do Discord**](https://discord.gg/hRep4RUj7f) ou ao [**grupo do telegram**](https://t.me/peass) ou **siga**-nos no **Twitter** 🐦 [**@hacktricks\_live**](https://twitter.com/hacktricks\_live)**.**
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* **Compartilhe truques de hacking enviando PRs para o** [**HackTricks**](https://github.com/carlospolop/hacktricks) e [**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) repositórios do github.
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</details>
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{% endhint %}
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