# IMAP/POP3

## **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.                                                                   |

`1 FETCH 1:* full` to get most information

`1 FETCH 1:* BODY[TEXT]` to get the text in the body

## **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.                 |

## Dangerous Configuration settings

| **Setting**               | **Description**                                                                           |
| ------------------------- | ----------------------------------------------------------------------------------------- |
| `auth_debug`              | Enables all authentication debug logging.                                                 |
| `auth_debug_passwords`    | This setting adjusts log verbosity, the submitted passwords, and the scheme gets logged.  |
| `auth_verbose`            | Logs unsuccessful authentication attempts and their reasons.                              |
| `auth_verbose_passwords`  | Passwords used for authentication are logged and can also be truncated.                   |
| `auth_anonymous_username` | This specifies the username to be used when logging in with the ANONYMOUS SASL mechanism. |

## Tools

nmap with default scripts

curl `curl -k 'imaps://<IP>' --user user:p4ssw0rd`&#x20;

OpenSSL for encrypted interactions:

* `openssl s_client -connect 10.129.14.128:pop3s`
* `openssl s_client -connect 10.129.14.128:imaps`


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