HTB: Redeemer Walkthrough

 

Writeup — Redeemer By Araiz Naqvi

Prepared By Araiz Naqvi.

Overview

- Difficulty: Easy
- Operating System: Linux
- Objective: Capture flag via Redis
- Tools Used: nmap, redis, openvpn

Nmap Scans

Let’s start with stealth scanning default ports using the -sS flag:

Strange, nothing comes back.
Let’s run an all-port stealth scan:

As can be seen that port 6379 is open. 
Seems like it is redis, looks like we’re about to use redis-cli.
Let’s first quickly run a service and script scan:

I also run a udp scan just for the sake of it:

Using redis-cli

Let’s use the redis-cli to logon host 10.129.229.238:

I next need to get more information using the INFO command:

At the end here:

This shows that there is only one db since it’s value is 0 and there are 4 keys.
Let’s start by selecting this database using the SELECT:

Let’s see what keys are available:

Now, let’s get these variables and get all values:

There’s our flag!

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