Questcon 2023 | Misc

Challenge 1: Guidelines of the Caribbean

Such a beautiful poem that made me wander for quite sometime.

The flag is in the rules though.

Inspect element in the last rule.

Flag: QUESTCON{C0d3Break3r_Rul35_Expl0r3r}

Challenge 2: Pirate’s Port Paradox

Find the ports number for all of the network services and get the flag:

((((WHOIS + QOTD) * CHARGEN) — XFER) % ECHO) * (DCE + NNTP) * NSCA

= ((((43+17)19)-82)%7)(135+119)*5667

flag: QUESTCON{1439418}

Challenge 3: Hexa Pirate’s Code

Unzip the zip file. You will be flooded with a lot of files. Now you have to search for a certain hex that will be the flag.

Let’s see what the flag might look like in hex:

We do this by converting QUESTCON{ to hex and we get 5155455354434f4e7b

Now we search for the hex value of flag using grep

In the terminal: grep 5155455354434f4e7b *

It gives: if (!String.Equals(pass, “5155455354434f4e7b426c34636b42333472645f4d616c773472335f50697234”+”7433737d-0000–0000–000000000000"))

We got the flag in hex: 5155455354434f4e7b426c34636b42333472645f4d616c773472335f506972347433737d

flag: QUESTCON{Bl4ckB34rd_Malw4r3_Pir4t3s}

This is my first writeup so please comment for any suggestions.

All the best for the challenges.