# 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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{% endhint %} ## Basic Information **Post Office Protocol (POP)** word beskryf as 'n protokol binne die domein van rekenaarnetwerke en die Internet, wat gebruik word vir die onttrekking en **herwinning van e-pos van 'n afstandsposbediener**, wat dit op die plaaslike toestel beskikbaar maak. Geleë binne die toepassingslaag van die OSI-model, stel hierdie protokol gebruikers in staat om e-pos te haal en te ontvang. Die werking van **POP-kliënte** behels tipies die totstandkoming van 'n verbinding met die posbediener, die aflaai van alle boodskappe, die stoor van hierdie boodskappe plaaslik op die kliëntstelsel, en daarna die verwydering daarvan van die bediener. Alhoewel daar drie weergawes van hierdie protokol is, is **POP3** die mees algemeen gebruikte weergawe. **Standaard poorte:** 110, 995(ssl) ``` PORT STATE SERVICE 110/tcp open pop3 ``` ## Enumerasie ### Banner Grabbing ```bash nc -nv 110 openssl s_client -connect :995 -crlf -quiet ``` ## Handmatig Jy kan die opdrag `CAPA` gebruik om die vermoëns van die POP3 bediener te verkry. ## Geoutomatiseerd ```bash nmap --script "pop3-capabilities or pop3-ntlm-info" -sV -port #All are default scripts ``` Die `pop3-ntlm-info` plugin sal 'n paar "**sensitiewe**" data (Windows weergawes) teruggee. ### [POP3 bruteforce](../generic-methodologies-and-resources/brute-force.md#pop) ## POP-sintaksis POP-opdragvoorbeelde van [hier](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 ``` Voorbeeld: ``` 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 ``` ## Gevaarlike Instellings From [https://academy.hackthebox.com/module/112/section/1073](https://academy.hackthebox.com/module/112/section/1073) | **Instelling** | **Beskrywing** | | ---------------------------- | --------------------------------------------------------------------------------------- | | `auth_debug` | Aktiveer alle outentikasie foutopsporing logboek. | | `auth_debug_passwords` | Hierdie instelling pas die logboek se verbositeit aan, die ingediende wagwoorde, en die skema word gelog. | | `auth_verbose` | Log ongeslaagde outentikasiepogings en hul redes. | | `auth_verbose_passwords` | Wagwoorde wat vir outentikasie gebruik word, word gelog en kan ook afgekort word. | | `auth_anonymous_username` | Dit spesifiseer die gebruikersnaam wat gebruik moet word wanneer daar met die ANONYMOUS SASL-meganisme aangemeld word. | ## HackTricks Outomatiese Opdragte ``` 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" %} Leer & oefen AWS Hacking:[**HackTricks Opleiding AWS Red Team Expert (ARTE)**](https://training.hacktricks.xyz/courses/arte)\ Leer & oefen GCP Hacking: [**HackTricks Opleiding GCP Red Team Expert (GRTE)**](https://training.hacktricks.xyz/courses/grte)
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