POP3
Introduction
There are 3 different versions of POP, but POP3 is the mostly used one.
POP3 runs on TCP ports 110(unencrypted) and 995(encrypted) by default.
Post Office Protocol (POP) is a protocol that extracts and retrieves email from a remote mail server for access by the host machine.
POP3 provides users the ability to fetch and receive email
POP3 Basic Interaction
| Command | Description |
|---|---|
openssl s_client -connect <FQDN/IP>:pop3s | Connect to the POP3s service. |
hydra -L users.txt -p 'Company01!' -f 10.10.110.20 pop3 | Login Bruteforce with Hydra (POP3) |
POP3 Commands
| Command | Description |
|---|---|
USER username | Identifies the user. |
PASS password | Authentication of the user using its password. |
STAT | Requests the number of saved emails from the server. |
LIST | Requests from the server the number and size of all emails. |
RETR id | Requests the server to deliver the requested email by ID. |
DELE id | Requests the server to delete the requested email by ID. |
CAPA | Requests the server to display the server capabilities. |
RSET | Requests the server to reset the transmitted information. |
QUIT | Closes the connection with the POP3 server. |
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