IMAP-POP3

Con la ayuda del Protocolo de Acceso a Mensajes de Internet (IMAP), es posible acceder a los correos electrónicos desde un servidor de correo. A diferencia del Protocolo de Oficina de Correos (POP3), IMAP permite la gestión en línea de correos electrónicos directamente en el servidor y admite estructuras de carpetas. Así pues, se trata de un protocolo de red para la gestión en línea de correos electrónicos en un servidor remoto. El protocolo está basado en cliente-servidor y permite la sincronización de un cliente de correo electrónico local con el buzón del servidor, proporcionando una especie de sistema de archivos de red para los correos electrónicos, lo que permite una sincronización sin problemas entre varios clientes independientes. POP3, por otro lado, no tiene la misma funcionalidad que IMAP, y sólo proporciona listado, recuperación y borrado de correos electrónicos como funciones en el servidor de correo electrónico. Por lo tanto, protocolos como IMAP deben utilizarse para funcionalidades adicionales como buzones jerárquicos directamente en el servidor de correo, acceso a múltiples buzones durante una sesión y preselección de correos electrónicos.

Default Configuration

IMAP Commands

Dominio

Descripción

1 LOGIN username password

Inicio de sesión del usuario.

1 LIST "" *

Enumera todos los directorios.

1 CREATE "INBOX"

Crea un buzón con un nombre especificado.

1 DELETE "INBOX"

Elimina un buzón.

1 RENAME "ToRead" "Important"

Cambia el nombre de un buzón.

1 LSUB "" *

Devuelve un subconjunto de nombres del conjunto de nombres que el Usuario ha declarado como activeo subscribed.

1 SELECT INBOX

Selecciona un buzón para poder acceder a los mensajes del buzón.

1 UNSELECT INBOX

Sale del buzón seleccionado.

1 FETCH <ID> all

Recupera datos asociados con un mensaje en el buzón.

1 CLOSE

Elimina todos los mensajes con la Deletedbandera establecida.

1 LOGOUT

Cierra la conexión con el servidor IMAP.

1 FETCH 2 (body[text])

Login
    A1 LOGIN username password
Values can be quoted to enclose spaces and special characters. A " must then be escape with a \
    A1 LOGIN "username" "password"

List Folders/Mailboxes
    A1 LIST "" *
    A1 LIST INBOX *
    A1 LIST "Archive" *

Create new Folder/Mailbox
    A1 CREATE INBOX.Archive.2012
    A1 CREATE "To Read"

Delete Folder/Mailbox
    A1 DELETE INBOX.Archive.2012
    A1 DELETE "To Read"

Rename Folder/Mailbox
    A1 RENAME "INBOX.One" "INBOX.Two"

List Subscribed Mailboxes
    A1 LSUB "" *

Status of Mailbox (There are more flags than the ones listed)
    A1 STATUS INBOX (MESSAGES UNSEEN RECENT)

Select a mailbox
    A1 SELECT INBOX

List messages
    A1 FETCH 1:* (FLAGS)
    A1 UID FETCH 1:* (FLAGS)

Retrieve Message Content
    A1 FETCH 2 (body[text])
    A1 FETCH 2 all
    A1 UID FETCH 102 (UID RFC822.SIZE BODY.PEEK[])

Close Mailbox
    A1 CLOSE

Logout
    A1 LOGOUT

POP3 Commands

Dominio

Descripción

USER username

Identifica al usuario.

PASS password

Autenticación del usuario mediante su contraseña.

STAT

Solicita la cantidad de correos electrónicos guardados del servidor.

LIST

Solicita al servidor el número y tamaño de todos los correos electrónicos.

RETR id

Solicita al servidor que entregue el correo electrónico solicitado por ID.

DELE id

Solicita al servidor que elimine el correo electrónico solicitado por ID.

CAPA

Solicita al servidor que muestre las capacidades del servidor.

RSET

Solicita al servidor que restablezca la información transmitida.

QUIT

Cierra la conexión con el servidor POP3.

Dangerous Settings

No obstante, las opciones de configuración mal configuradas podrían permitirnos obtener más información, como depurar los comandos ejecutados en el servicio o iniciar sesión como anónimo, de forma similar al servicio FTP. La mayoría de las empresas utilizan proveedores de correo electrónico de terceros, como Google, Microsoft y muchos otros. Sin embargo, algunas empresas siguen utilizando sus propios servidores de correo por muchas razones diferentes. Una de estas razones es mantener la privacidad que quieren mantener en sus propias manos. Son muchos los errores de configuración que pueden cometer los administradores, que en el peor de los casos nos permitirán leer todos los correos enviados y recibidos, que incluso pueden contener información confidencial o sensible. Algunas de estas opciones de configuración son:

Configuración

Descripción

auth_debug

Habilita todos los registros de depuración de autenticación.

auth_debug_passwords

Esta configuración ajusta la detalle del registro, las contraseñas enviadas y el esquema se registra.

auth_verbose

Registra los intentos de autenticación fallidos y sus motivos.

auth_verbose_passwords

Las contraseñas utilizadas para la autenticación se registran y también se pueden truncar.

auth_anonymous_username

Esto especifica el nombre de usuario que se utilizará al iniciar sesión con el mecanismo SASL ANÓNIMO.

Footprinting the Service

Nmap

sudo nmap 10.129.14.128 -sV -p110,143,993,995 -sC

Starting Nmap 7.80 ( https://nmap.org ) at 2021-09-19 22:09 CEST
Nmap scan report for 10.129.14.128
Host is up (0.00026s latency).

PORT    STATE SERVICE  VERSION
110/tcp open  pop3     Dovecot pop3d
|_pop3-capabilities: AUTH-RESP-CODE SASL STLS TOP UIDL RESP-CODES CAPA PIPELINING
| ssl-cert: Subject: commonName=mail1.inlanefreight.htb/organizationName=Inlanefreight/stateOrProvinceName=California/countryName=US
| Not valid before: 2021-09-19T19:44:58
|_Not valid after:  2295-07-04T19:44:58
143/tcp open  imap     Dovecot imapd
|_imap-capabilities: more have post-login STARTTLS Pre-login capabilities LITERAL+ LOGIN-REFERRALS OK LOGINDISABLEDA0001 SASL-IR ENABLE listed IDLE ID IMAP4rev1
| ssl-cert: Subject: commonName=mail1.inlanefreight.htb/organizationName=Inlanefreight/stateOrProvinceName=California/countryName=US
| Not valid before: 2021-09-19T19:44:58
|_Not valid after:  2295-07-04T19:44:58
993/tcp open  ssl/imap Dovecot imapd
|_imap-capabilities: more have post-login OK capabilities LITERAL+ LOGIN-REFERRALS Pre-login AUTH=PLAINA0001 SASL-IR ENABLE listed IDLE ID IMAP4rev1
| ssl-cert: Subject: commonName=mail1.inlanefreight.htb/organizationName=Inlanefreight/stateOrProvinceName=California/countryName=US
| Not valid before: 2021-09-19T19:44:58
|_Not valid after:  2295-07-04T19:44:58
995/tcp open  ssl/pop3 Dovecot pop3d
|_pop3-capabilities: AUTH-RESP-CODE USER SASL(PLAIN) TOP UIDL RESP-CODES CAPA PIPELINING
| ssl-cert: Subject: commonName=mail1.inlanefreight.htb/organizationName=Inlanefreight/stateOrProvinceName=California/countryName=US
| Not valid before: 2021-09-19T19:44:58
|_Not valid after:  2295-07-04T19:44:58
MAC Address: 00:00:00:00:00:00 (VMware)

Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 12.74 seconds

cURL

curl -k 'imaps://10.129.14.128' --user user:p4ssw0rd

* LIST (\HasNoChildren) "." Important
* LIST (\HasNoChildren) "." INBOX

curl -k 'imaps://10.129.14.128' --user cry0l1t3:1234 -v

*   Trying 10.129.14.128:993...
* TCP_NODELAY set
* Connected to 10.129.14.128 (10.129.14.128) port 993 (#0)
* successfully set certificate verify locations:
*   CAfile: /etc/ssl/certs/ca-certificates.crt
  CApath: /etc/ssl/certs
* TLSv1.3 (OUT), TLS handshake, Client hello (1):
* TLSv1.3 (IN), TLS handshake, Server hello (2):
* TLSv1.3 (IN), TLS handshake, Encrypted Extensions (8):
* TLSv1.3 (IN), TLS handshake, Certificate (11):
* TLSv1.3 (IN), TLS handshake, CERT verify (15):
* TLSv1.3 (IN), TLS handshake, Finished (20):
* TLSv1.3 (OUT), TLS change cipher, Change cipher spec (1):
* TLSv1.3 (OUT), TLS handshake, Finished (20):
* SSL connection using TLSv1.3 / TLS_AES_256_GCM_SHA384
* Server certificate:
*  subject: C=US; ST=California; L=Sacramento; O=Inlanefreight; OU=Customer Support; CN=mail1.inlanefreight.htb; emailAddress=cry0l1t3@inlanefreight.htb
*  start date: Sep 19 19:44:58 2021 GMT
*  expire date: Jul  4 19:44:58 2295 GMT
*  issuer: C=US; ST=California; L=Sacramento; O=Inlanefreight; OU=Customer Support; CN=mail1.inlanefreight.htb; emailAddress=cry0l1t3@inlanefreight.htb
*  SSL certificate verify result: self signed certificate (18), continuing anyway.
* TLSv1.3 (IN), TLS handshake, Newsession Ticket (4):
* TLSv1.3 (IN), TLS handshake, Newsession Ticket (4):
* old SSL session ID is stale, removing
< * OK [CAPABILITY IMAP4rev1 SASL-IR LOGIN-REFERRALS ID ENABLE IDLE LITERAL+ AUTH=PLAIN] HTB-Academy IMAP4 v.0.21.4
> A001 CAPABILITY
< * CAPABILITY IMAP4rev1 SASL-IR LOGIN-REFERRALS ID ENABLE IDLE LITERAL+ AUTH=PLAIN
< A001 OK Pre-login capabilities listed, post-login capabilities have more.
> A002 AUTHENTICATE PLAIN AGNyeTBsMXQzADEyMzQ=
< * CAPABILITY IMAP4rev1 SASL-IR LOGIN-REFERRALS ID ENABLE IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS THREAD=ORDEREDSUBJECT MULTIAPPEND URL-PARTIAL CATENATE UNSELECT CHILDREN NAMESPACE UIDPLUS LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS BINARY MOVE SNIPPET=FUZZY PREVIEW=FUZZY LITERAL+ NOTIFY SPECIAL-USE
< A002 OK Logged in
> A003 LIST "" *
< * LIST (\HasNoChildren) "." Important
* LIST (\HasNoChildren) "." Important
< * LIST (\HasNoChildren) "." INBOX
* LIST (\HasNoChildren) "." INBOX
< A003 OK List completed (0.001 + 0.000 secs).
* Connection #0 to host 10.129.14.128 left intact

OpenSSL - TLS Encrypted Interaction POP3

openssl s_client -connect 10.129.14.128:pop3s

CONNECTED(00000003)
Can't use SSL_get_servername
depth=0 C = US, ST = California, L = Sacramento, O = Inlanefreight, OU = Customer Support, CN = mail1.inlanefreight.htb, emailAddress = cry0l1t3@inlanefreight.htb
verify error:num=18:self signed certificate
verify return:1
depth=0 C = US, ST = California, L = Sacramento, O = Inlanefreight, OU = Customer Support, CN = mail1.inlanefreight.htb, emailAddress = cry0l1t3@inlanefreight.htb
verify return:1
---
Certificate chain
 0 s:C = US, ST = California, L = Sacramento, O = Inlanefreight, OU = Customer Support, CN = mail1.inlanefreight.htb, emailAddress = cry0l1t3@inlanefreight.htb

...SNIP...

---
read R BLOCK
---
Post-Handshake New Session Ticket arrived:
SSL-Session:
    Protocol  : TLSv1.3
    Cipher    : TLS_AES_256_GCM_SHA384
    Session-ID: 3CC39A7F2928B252EF2FFA5462140B1A0A74B29D4708AA8DE1515BB4033D92C2
    Session-ID-ctx:
    Resumption PSK: 68419D933B5FEBD878FF1BA399A926813BEA3652555E05F0EC75D65819A263AA25FA672F8974C37F6446446BB7EA83F9
    PSK identity: None
    PSK identity hint: None
    SRP username: None
    TLS session ticket lifetime hint: 7200 (seconds)
    TLS session ticket:
    0000 - d7 86 ac 7e f3 f4 95 35-88 40 a5 b5 d6 a6 41 e4   ...~...5.@....A.
    0010 - 96 6c e6 12 4f 50 ce 72-36 25 df e1 72 d9 23 94   .l..OP.r6%..r.#.
    0020 - cc 29 90 08 58 1b 57 ab-db a8 6b f7 8f 31 5b ad   .)..X.W...k..1[.
    0030 - 47 94 f4 67 58 1f 96 d9-ca ca 56 f9 7a 12 f6 6d   G..gX.....V.z..m
    0040 - 43 b9 b6 68 de db b2 47-4f 9f 48 14 40 45 8f 89   C..h...GO.H.@E..
    0050 - fa 19 35 9c 6d 3c a1 46-5c a2 65 ab 87 a4 fd 5e   ..5.m<.F\.e....^
    0060 - a2 95 25 d4 43 b8 71 70-40 6c fe 6f 0e d1 a0 38   ..%.C.qp@l.o...8
    0070 - 6e bd 73 91 ed 05 89 83-f5 3e d9 2a e0 2e 96 f8   n.s......>.*....
    0080 - 99 f0 50 15 e0 1b 66 db-7c 9f 10 80 4a a1 8b 24   ..P...f.|...J..$
    0090 - bb 00 03 d4 93 2b d9 95-64 44 5b c2 6b 2e 01 b5   .....+..dD[.k...
    00a0 - e8 1b f4 a4 98 a7 7a 7d-0a 80 cc 0a ad fe 6e b3   ......z}......n.
    00b0 - 0a d6 50 5d fd 9a b4 5c-28 a4 c9 36 e4 7d 2a 1e   ..P]...\(..6.}*.

    Start Time: 1632081313
    Timeout   : 7200 (sec)
    Verify return code: 18 (self signed certificate)
    Extended master secret: no
    Max Early Data: 0
---
read R BLOCK
+OK HTB-Academy POP3 Server

OpenSSL - TLS Encrypted Interaction IMAP

openssl s_client -connect 10.129.14.128:imaps

CONNECTED(00000003)
Can't use SSL_get_servername
depth=0 C = US, ST = California, L = Sacramento, O = Inlanefreight, OU = Customer Support, CN = mail1.inlanefreight.htb, emailAddress = cry0l1t3@inlanefreight.htb
verify error:num=18:self signed certificate
verify return:1
depth=0 C = US, ST = California, L = Sacramento, O = Inlanefreight, OU = Customer Support, CN = mail1.inlanefreight.htb, emailAddress = cry0l1t3@inlanefreight.htb
verify return:1
---
Certificate chain
 0 s:C = US, ST = California, L = Sacramento, O = Inlanefreight, OU = Customer Support, CN = mail1.inlanefreight.htb, emailAddress = cry0l1t3@inlanefreight.htb

...SNIP...

---
read R BLOCK
---
Post-Handshake New Session Ticket arrived:
SSL-Session:
    Protocol  : TLSv1.3
    Cipher    : TLS_AES_256_GCM_SHA384
    Session-ID: 2B7148CD1B7B92BA123E06E22831FCD3B365A5EA06B2CDEF1A5F397177130699
    Session-ID-ctx:
    Resumption PSK: 4D9F082C6660646C39135F9996DDA2C199C4F7E75D65FA5303F4A0B274D78CC5BD3416C8AF50B31A34EC022B619CC633
    PSK identity: None
    PSK identity hint: None
    SRP username: None
    TLS session ticket lifetime hint: 7200 (seconds)
    TLS session ticket:
    0000 - 68 3b b6 68 ff 85 95 7c-8a 8a 16 b2 97 1c 72 24   h;.h...|......r$
    0010 - 62 a7 84 ff c3 24 ab 99-de 45 60 26 e7 04 4a 7d   b....$...E`&..J}
    0020 - bc 6e 06 a0 ff f7 d7 41-b5 1b 49 9c 9f 36 40 8d   .n.....A..I..6@.
    0030 - 93 35 ed d9 eb 1f 14 d7-a5 f6 3f c8 52 fb 9f 29   .5........?.R..)
    0040 - 89 8d de e6 46 95 b3 32-48 80 19 bc 46 36 cb eb   ....F..2H...F6..
    0050 - 35 79 54 4c 57 f8 ee 55-06 e3 59 7f 5e 64 85 b0   5yTLW..U..Y.^d..
    0060 - f3 a4 8c a6 b6 47 e4 59-ee c9 ab 54 a4 ab 8c 01   .....G.Y...T....
    0070 - 56 bb b9 bb 3b f6 96 74-16 c9 66 e2 6c 28 c6 12   V...;..t..f.l(..
    0080 - 34 c7 63 6b ff 71 16 7f-91 69 dc 38 7a 47 46 ec   4.ck.q...i.8zGF.
    0090 - 67 b7 a2 90 8b 31 58 a0-4f 57 30 6a b6 2e 3a 21   g....1X.OW0j..:!
    00a0 - 54 c7 ba f0 a9 74 13 11-d5 d1 ec cc ea f9 54 7d   T....t........T}
    00b0 - 46 a6 33 ed 5d 24 ed b0-20 63 43 d8 8f 14 4d 62   F.3.]$.. cC...Mb

    Start Time: 1632081604
    Timeout   : 7200 (sec)
    Verify return code: 18 (self signed certificate)
    Extended master secret: no
    Max Early Data: 0
---
read R BLOCK
* OK [CAPABILITY IMAP4rev1 SASL-IR LOGIN-REFERRALS ID ENABLE IDLE LITERAL+ AUTH=PLAIN] HTB-Academy IMAP4 v.0.21.4

AnteriorSMTP SiguienteSNMP

Última actualización hace 10 meses

IMAP-POP3

Default Configuration

IMAP Commands

Dominio

Descripción

1 LOGIN username password

Inicio de sesión del usuario.

1 LIST "" *

Enumera todos los directorios.

1 CREATE "INBOX"

Crea un buzón con un nombre especificado.

1 DELETE "INBOX"

Elimina un buzón.

1 RENAME "ToRead" "Important"

Cambia el nombre de un buzón.

1 LSUB "" *

Devuelve un subconjunto de nombres del conjunto de nombres que el Usuario ha declarado como activeo subscribed.

1 SELECT INBOX

Selecciona un buzón para poder acceder a los mensajes del buzón.

1 UNSELECT INBOX

Sale del buzón seleccionado.

1 FETCH <ID> all

Recupera datos asociados con un mensaje en el buzón.

1 CLOSE

Elimina todos los mensajes con la Deletedbandera establecida.

1 LOGOUT

Cierra la conexión con el servidor IMAP.

1 FETCH 2 (body[text])

Login
    A1 LOGIN username password
Values can be quoted to enclose spaces and special characters. A " must then be escape with a \
    A1 LOGIN "username" "password"

List Folders/Mailboxes
    A1 LIST "" *
    A1 LIST INBOX *
    A1 LIST "Archive" *

Create new Folder/Mailbox
    A1 CREATE INBOX.Archive.2012
    A1 CREATE "To Read"

Delete Folder/Mailbox
    A1 DELETE INBOX.Archive.2012
    A1 DELETE "To Read"

Rename Folder/Mailbox
    A1 RENAME "INBOX.One" "INBOX.Two"

List Subscribed Mailboxes
    A1 LSUB "" *

Status of Mailbox (There are more flags than the ones listed)
    A1 STATUS INBOX (MESSAGES UNSEEN RECENT)

Select a mailbox
    A1 SELECT INBOX

List messages
    A1 FETCH 1:* (FLAGS)
    A1 UID FETCH 1:* (FLAGS)

Retrieve Message Content
    A1 FETCH 2 (body[text])
    A1 FETCH 2 all
    A1 UID FETCH 102 (UID RFC822.SIZE BODY.PEEK[])

Close Mailbox
    A1 CLOSE

Logout
    A1 LOGOUT

POP3 Commands

Dominio

Descripción

USER username

Identifica al usuario.

PASS password

Autenticación del usuario mediante su contraseña.

STAT

Solicita la cantidad de correos electrónicos guardados del servidor.

LIST

Solicita al servidor el número y tamaño de todos los correos electrónicos.

RETR id

Solicita al servidor que entregue el correo electrónico solicitado por ID.

DELE id

Solicita al servidor que elimine el correo electrónico solicitado por ID.

CAPA

Solicita al servidor que muestre las capacidades del servidor.

RSET

Solicita al servidor que restablezca la información transmitida.

QUIT

Cierra la conexión con el servidor POP3.

Dangerous Settings

Configuración

Descripción

auth_debug

Habilita todos los registros de depuración de autenticación.

auth_debug_passwords

Esta configuración ajusta la detalle del registro, las contraseñas enviadas y el esquema se registra.

auth_verbose

Registra los intentos de autenticación fallidos y sus motivos.

auth_verbose_passwords

Las contraseñas utilizadas para la autenticación se registran y también se pueden truncar.

auth_anonymous_username

Esto especifica el nombre de usuario que se utilizará al iniciar sesión con el mecanismo SASL ANÓNIMO.

Footprinting the Service

Nmap

sudo nmap 10.129.14.128 -sV -p110,143,993,995 -sC

Starting Nmap 7.80 ( https://nmap.org ) at 2021-09-19 22:09 CEST
Nmap scan report for 10.129.14.128
Host is up (0.00026s latency).

PORT    STATE SERVICE  VERSION
110/tcp open  pop3     Dovecot pop3d
|_pop3-capabilities: AUTH-RESP-CODE SASL STLS TOP UIDL RESP-CODES CAPA PIPELINING
| ssl-cert: Subject: commonName=mail1.inlanefreight.htb/organizationName=Inlanefreight/stateOrProvinceName=California/countryName=US
| Not valid before: 2021-09-19T19:44:58
|_Not valid after:  2295-07-04T19:44:58
143/tcp open  imap     Dovecot imapd
|_imap-capabilities: more have post-login STARTTLS Pre-login capabilities LITERAL+ LOGIN-REFERRALS OK LOGINDISABLEDA0001 SASL-IR ENABLE listed IDLE ID IMAP4rev1
| ssl-cert: Subject: commonName=mail1.inlanefreight.htb/organizationName=Inlanefreight/stateOrProvinceName=California/countryName=US
| Not valid before: 2021-09-19T19:44:58
|_Not valid after:  2295-07-04T19:44:58
993/tcp open  ssl/imap Dovecot imapd
|_imap-capabilities: more have post-login OK capabilities LITERAL+ LOGIN-REFERRALS Pre-login AUTH=PLAINA0001 SASL-IR ENABLE listed IDLE ID IMAP4rev1
| ssl-cert: Subject: commonName=mail1.inlanefreight.htb/organizationName=Inlanefreight/stateOrProvinceName=California/countryName=US
| Not valid before: 2021-09-19T19:44:58
|_Not valid after:  2295-07-04T19:44:58
995/tcp open  ssl/pop3 Dovecot pop3d
|_pop3-capabilities: AUTH-RESP-CODE USER SASL(PLAIN) TOP UIDL RESP-CODES CAPA PIPELINING
| ssl-cert: Subject: commonName=mail1.inlanefreight.htb/organizationName=Inlanefreight/stateOrProvinceName=California/countryName=US
| Not valid before: 2021-09-19T19:44:58
|_Not valid after:  2295-07-04T19:44:58
MAC Address: 00:00:00:00:00:00 (VMware)

Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 12.74 seconds

cURL

curl -k 'imaps://10.129.14.128' --user user:p4ssw0rd

* LIST (\HasNoChildren) "." Important
* LIST (\HasNoChildren) "." INBOX

curl -k 'imaps://10.129.14.128' --user cry0l1t3:1234 -v

*   Trying 10.129.14.128:993...
* TCP_NODELAY set
* Connected to 10.129.14.128 (10.129.14.128) port 993 (#0)
* successfully set certificate verify locations:
*   CAfile: /etc/ssl/certs/ca-certificates.crt
  CApath: /etc/ssl/certs
* TLSv1.3 (OUT), TLS handshake, Client hello (1):
* TLSv1.3 (IN), TLS handshake, Server hello (2):
* TLSv1.3 (IN), TLS handshake, Encrypted Extensions (8):
* TLSv1.3 (IN), TLS handshake, Certificate (11):
* TLSv1.3 (IN), TLS handshake, CERT verify (15):
* TLSv1.3 (IN), TLS handshake, Finished (20):
* TLSv1.3 (OUT), TLS change cipher, Change cipher spec (1):
* TLSv1.3 (OUT), TLS handshake, Finished (20):
* SSL connection using TLSv1.3 / TLS_AES_256_GCM_SHA384
* Server certificate:
*  subject: C=US; ST=California; L=Sacramento; O=Inlanefreight; OU=Customer Support; CN=mail1.inlanefreight.htb; emailAddress=cry0l1t3@inlanefreight.htb
*  start date: Sep 19 19:44:58 2021 GMT
*  expire date: Jul  4 19:44:58 2295 GMT
*  issuer: C=US; ST=California; L=Sacramento; O=Inlanefreight; OU=Customer Support; CN=mail1.inlanefreight.htb; emailAddress=cry0l1t3@inlanefreight.htb
*  SSL certificate verify result: self signed certificate (18), continuing anyway.
* TLSv1.3 (IN), TLS handshake, Newsession Ticket (4):
* TLSv1.3 (IN), TLS handshake, Newsession Ticket (4):
* old SSL session ID is stale, removing
< * OK [CAPABILITY IMAP4rev1 SASL-IR LOGIN-REFERRALS ID ENABLE IDLE LITERAL+ AUTH=PLAIN] HTB-Academy IMAP4 v.0.21.4
> A001 CAPABILITY
< * CAPABILITY IMAP4rev1 SASL-IR LOGIN-REFERRALS ID ENABLE IDLE LITERAL+ AUTH=PLAIN
< A001 OK Pre-login capabilities listed, post-login capabilities have more.
> A002 AUTHENTICATE PLAIN AGNyeTBsMXQzADEyMzQ=
< * CAPABILITY IMAP4rev1 SASL-IR LOGIN-REFERRALS ID ENABLE IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS THREAD=ORDEREDSUBJECT MULTIAPPEND URL-PARTIAL CATENATE UNSELECT CHILDREN NAMESPACE UIDPLUS LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS BINARY MOVE SNIPPET=FUZZY PREVIEW=FUZZY LITERAL+ NOTIFY SPECIAL-USE
< A002 OK Logged in
> A003 LIST "" *
< * LIST (\HasNoChildren) "." Important
* LIST (\HasNoChildren) "." Important
< * LIST (\HasNoChildren) "." INBOX
* LIST (\HasNoChildren) "." INBOX
< A003 OK List completed (0.001 + 0.000 secs).
* Connection #0 to host 10.129.14.128 left intact

OpenSSL - TLS Encrypted Interaction POP3

openssl s_client -connect 10.129.14.128:pop3s

CONNECTED(00000003)
Can't use SSL_get_servername
depth=0 C = US, ST = California, L = Sacramento, O = Inlanefreight, OU = Customer Support, CN = mail1.inlanefreight.htb, emailAddress = cry0l1t3@inlanefreight.htb
verify error:num=18:self signed certificate
verify return:1
depth=0 C = US, ST = California, L = Sacramento, O = Inlanefreight, OU = Customer Support, CN = mail1.inlanefreight.htb, emailAddress = cry0l1t3@inlanefreight.htb
verify return:1
---
Certificate chain
 0 s:C = US, ST = California, L = Sacramento, O = Inlanefreight, OU = Customer Support, CN = mail1.inlanefreight.htb, emailAddress = cry0l1t3@inlanefreight.htb

...SNIP...

---
read R BLOCK
---
Post-Handshake New Session Ticket arrived:
SSL-Session:
    Protocol  : TLSv1.3
    Cipher    : TLS_AES_256_GCM_SHA384
    Session-ID: 3CC39A7F2928B252EF2FFA5462140B1A0A74B29D4708AA8DE1515BB4033D92C2
    Session-ID-ctx:
    Resumption PSK: 68419D933B5FEBD878FF1BA399A926813BEA3652555E05F0EC75D65819A263AA25FA672F8974C37F6446446BB7EA83F9
    PSK identity: None
    PSK identity hint: None
    SRP username: None
    TLS session ticket lifetime hint: 7200 (seconds)
    TLS session ticket:
    0000 - d7 86 ac 7e f3 f4 95 35-88 40 a5 b5 d6 a6 41 e4   ...~...5.@....A.
    0010 - 96 6c e6 12 4f 50 ce 72-36 25 df e1 72 d9 23 94   .l..OP.r6%..r.#.
    0020 - cc 29 90 08 58 1b 57 ab-db a8 6b f7 8f 31 5b ad   .)..X.W...k..1[.
    0030 - 47 94 f4 67 58 1f 96 d9-ca ca 56 f9 7a 12 f6 6d   G..gX.....V.z..m
    0040 - 43 b9 b6 68 de db b2 47-4f 9f 48 14 40 45 8f 89   C..h...GO.H.@E..
    0050 - fa 19 35 9c 6d 3c a1 46-5c a2 65 ab 87 a4 fd 5e   ..5.m<.F\.e....^
    0060 - a2 95 25 d4 43 b8 71 70-40 6c fe 6f 0e d1 a0 38   ..%.C.qp@l.o...8
    0070 - 6e bd 73 91 ed 05 89 83-f5 3e d9 2a e0 2e 96 f8   n.s......>.*....
    0080 - 99 f0 50 15 e0 1b 66 db-7c 9f 10 80 4a a1 8b 24   ..P...f.|...J..$
    0090 - bb 00 03 d4 93 2b d9 95-64 44 5b c2 6b 2e 01 b5   .....+..dD[.k...
    00a0 - e8 1b f4 a4 98 a7 7a 7d-0a 80 cc 0a ad fe 6e b3   ......z}......n.
    00b0 - 0a d6 50 5d fd 9a b4 5c-28 a4 c9 36 e4 7d 2a 1e   ..P]...\(..6.}*.

    Start Time: 1632081313
    Timeout   : 7200 (sec)
    Verify return code: 18 (self signed certificate)
    Extended master secret: no
    Max Early Data: 0
---
read R BLOCK
+OK HTB-Academy POP3 Server

OpenSSL - TLS Encrypted Interaction IMAP

openssl s_client -connect 10.129.14.128:imaps

CONNECTED(00000003)
Can't use SSL_get_servername
depth=0 C = US, ST = California, L = Sacramento, O = Inlanefreight, OU = Customer Support, CN = mail1.inlanefreight.htb, emailAddress = cry0l1t3@inlanefreight.htb
verify error:num=18:self signed certificate
verify return:1
depth=0 C = US, ST = California, L = Sacramento, O = Inlanefreight, OU = Customer Support, CN = mail1.inlanefreight.htb, emailAddress = cry0l1t3@inlanefreight.htb
verify return:1
---
Certificate chain
 0 s:C = US, ST = California, L = Sacramento, O = Inlanefreight, OU = Customer Support, CN = mail1.inlanefreight.htb, emailAddress = cry0l1t3@inlanefreight.htb

...SNIP...

---
read R BLOCK
---
Post-Handshake New Session Ticket arrived:
SSL-Session:
    Protocol  : TLSv1.3
    Cipher    : TLS_AES_256_GCM_SHA384
    Session-ID: 2B7148CD1B7B92BA123E06E22831FCD3B365A5EA06B2CDEF1A5F397177130699
    Session-ID-ctx:
    Resumption PSK: 4D9F082C6660646C39135F9996DDA2C199C4F7E75D65FA5303F4A0B274D78CC5BD3416C8AF50B31A34EC022B619CC633
    PSK identity: None
    PSK identity hint: None
    SRP username: None
    TLS session ticket lifetime hint: 7200 (seconds)
    TLS session ticket:
    0000 - 68 3b b6 68 ff 85 95 7c-8a 8a 16 b2 97 1c 72 24   h;.h...|......r$
    0010 - 62 a7 84 ff c3 24 ab 99-de 45 60 26 e7 04 4a 7d   b....$...E`&..J}
    0020 - bc 6e 06 a0 ff f7 d7 41-b5 1b 49 9c 9f 36 40 8d   .n.....A..I..6@.
    0030 - 93 35 ed d9 eb 1f 14 d7-a5 f6 3f c8 52 fb 9f 29   .5........?.R..)
    0040 - 89 8d de e6 46 95 b3 32-48 80 19 bc 46 36 cb eb   ....F..2H...F6..
    0050 - 35 79 54 4c 57 f8 ee 55-06 e3 59 7f 5e 64 85 b0   5yTLW..U..Y.^d..
    0060 - f3 a4 8c a6 b6 47 e4 59-ee c9 ab 54 a4 ab 8c 01   .....G.Y...T....
    0070 - 56 bb b9 bb 3b f6 96 74-16 c9 66 e2 6c 28 c6 12   V...;..t..f.l(..
    0080 - 34 c7 63 6b ff 71 16 7f-91 69 dc 38 7a 47 46 ec   4.ck.q...i.8zGF.
    0090 - 67 b7 a2 90 8b 31 58 a0-4f 57 30 6a b6 2e 3a 21   g....1X.OW0j..:!
    00a0 - 54 c7 ba f0 a9 74 13 11-d5 d1 ec cc ea f9 54 7d   T....t........T}
    00b0 - 46 a6 33 ed 5d 24 ed b0-20 63 43 d8 8f 14 4d 62   F.3.]$.. cC...Mb

    Start Time: 1632081604
    Timeout   : 7200 (sec)
    Verify return code: 18 (self signed certificate)
    Extended master secret: no
    Max Early Data: 0
---
read R BLOCK
* OK [CAPABILITY IMAP4rev1 SASL-IR LOGIN-REFERRALS ID ENABLE IDLE LITERAL+ AUTH=PLAIN] HTB-Academy IMAP4 v.0.21.4

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