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120 lines
4.4 KiB
Markdown
120 lines
4.4 KiB
Markdown
# 110,995 - Pentesting POP
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{{#include ../banners/hacktricks-training.md}}
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## Osnovne informacije
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**Post Office Protocol (POP)** se opisuje kao protokol unutar oblasti računarskih mreža i Interneta, koji se koristi za ekstrakciju i **preuzimanje email-a sa udaljenog mail servera**, čineći ga dostupnim na lokalnom uređaju. Pozicioniran unutar aplikativnog sloja OSI modela, ovaj protokol omogućava korisnicima da preuzmu i prime email. Rad **POP klijenata** obično uključuje uspostavljanje veze sa mail serverom, preuzimanje svih poruka, čuvanje ovih poruka lokalno na klijentskom sistemu, i potom njihovo uklanjanje sa servera. Iako postoje tri iteracije ovog protokola, **POP3** se izdvaja kao najčešće korišćena verzija.
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**Podrazumevani portovi:** 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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## Enumeration
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### Banner Grabbing
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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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## Ručno
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Možete koristiti komandu `CAPA` da dobijete mogućnosti POP3 servera.
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## Automatizovano
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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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Plugin `pop3-ntlm-info` će vratiti neke "**osetljive**" podatke (Windows verzije).
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### [POP3 bruteforce](../generic-hacking/brute-force.md#pop)
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## POP sintaksa
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Primeri POP komandi iz [ovde](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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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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## Beleženje Lozinki
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POP serveri sa podešavanjem **`auth_debug`** omogućavaju povećano generisanje logova. Međutim, ako su **`auth_debug_passwords`** ili **`auth_verbose_passwords`** postavljeni na **`true`**, lozinke bi takođe mogle biti beležene u čistom tekstu u tim logovima.
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## HackTricks Automatske Komande
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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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