IMAP, POP3 - 110,143,993,995

IMAP Commands

Command	Description
1 LOGIN username password	User's login.
1 LIST "" *	Lists all directories.
1 CREATE "INBOX"	Creates a mailbox with a specified name.
1 DELETE "INBOX"	Deletes a mailbox.
1 RENAME "ToRead" "Important"	Renames a mailbox.
1 LSUB "" *	Returns a subset of names from the set of names that the User has declared as being active or subscribed.
1 SELECT INBOX	Selects a mailbox so that messages in the mailbox can be accessed.
1 UNSELECT INBOX	Exits the selected mailbox.
1 FETCH <ID> all	Retrieves data associated with a message in the mailbox.
1 CLOSE	Removes all messages with the Deleted flag set.
1 LOGOUT	Closes the connection with the IMAP server.

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.

Interacting with service

# POP3
telnet ip 110

# login using username and password
USER admin
PASS password

# list all mails of user
LIST 

# read mails using id no.   
RETR 1

Nmap

# nmap scan  
nmap ip -sV -p110,143,993,995 -sC

cURL

# footprinting using curl with valid user and pass 
curl -k 'imaps://ip' --user user:p4ssw0rd

curl -k 'imaps://ip' --user user:1234 -v

OpenSSL - TLS Encrypted Interaction POP3

# OpenSSL - TLS Encrypted Interaction POP3
openssl s_client -connect ip:pop3s

# OpenSSL - TLS Encrypted Interaction IMAP
openssl s_client -connect ip:imaps