Initial Scan

sudo nmap -p- -sT -sV -T4 -v
Starting Nmap 7.80 ( ) at 2022-11-04 23:11 EDT
NSE: Loaded 45 scripts for scanning.
Initiating Ping Scan at 23:11
Scanning [4 ports]
Completed Ping Scan at 23:11, 0.08s elapsed (1 total hosts)
Initiating Parallel DNS resolution of 1 host. at 23:11
Completed Parallel DNS resolution of 1 host. at 23:11, 0.09s elapsed
Initiating Connect Scan at 23:11
Scanning [65535 ports]
Discovered open port 22/tcp on
Discovered open port 27017/tcp on
Completed Connect Scan at 23:11, 19.21s elapsed (65535 total ports)
Initiating Service scan at 23:11
Scanning 2 services on
Completed Service scan at 23:12, 6.11s elapsed (2 services on 1 host)
NSE: Script scanning
Initiating NSE at 23:12
Completed NSE at 23:12, 0.01s elapsed
Initiating NSE at 23:12
Completed NSE at 23:12, 0.00s elapsed
Nmap scan report for
Host is up (0.053s latency).
Not shown: 65533 closed ports
22/tcp    open  ssh     OpenSSH 8.2p1 Ubuntu 4ubuntu0.5 (Ubuntu Linux; protocol 2.0)
27017/tcp open  mongodb MongoDB 3.6.8
Service Info: OS: Linux; CPE: cpe:/o:linux:linux_kernel

Read data files from: /usr/bin/../share/nmap
Service detection performed. Please report any incorrect results at .
Nmap done: 1 IP address (1 host up) scanned in 25.99 seconds
           Raw packets sent: 4 (152B) | Rcvd: 1 (28B)

Task 1

How many TCP ports are open on the machine?

Found from the initial scan

Answer: 2

Task 2

Which service is running on port 27017 of the remote host?

Found from the initial scan

Answer: MongoDB 3.6.8

Task 3

What type of database is MongoDB? (Choose: SQL or NoSQL)

As they only give us 2 options and it's more than 3 characters long, BUT also a google search will show: "MongoDB is a source-available cross-platform document-oriented database program. Classified as a NoSQL database program, MongoDB uses JSON-like documents with optional schemas."

Answer: NoSQL

Task 4

What is the command name for the Mongo shell that is installed with the mongodb-clients package?

Google search and looking on their webpage reveal: "The mongo shell is included as part of the MongoDB server installation. If you have already installed the server, the mongo shell is installed to the same location as the server binary."

With this, lets connect to the mongo databse on the target machine

Answer: mongo

Task 5

What is the command used for listing all the databases present on the MongoDB server? (No need to include a trailing ;)

Another google search.

Answer: show dbs

Task 6

What is the command used for listing out the collections in a database? (No need to include a trailing ;)

Similar to last answer just with collections rather than databases.

We see the secsitive_information database, so let use that.

Answer: show collections

Task 7

What is the command used for dumping the content of all the documents within the collection named flag in a format that is easy to read?

Googling around says "Using the db.collection.find() command." So we know our collection is called flag, use the collection name flag instead of the word collection.

But this doesn't give us the full answer. After more googling around I found this blog post mentioning the pretty() function.

Answer: db.flag.find().pretty()

Task 8

Submit the root flag

From previous command/task

Answer: 1b6e6fb359e7c40241b6d431427ba6ea

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