5 min readJust now

–

When a Halloween decoration becomes your next cybersecurity puzzle

Difficulty: Beginner-Friendly | Category: OSINT

Hey there,

I’m Chetan Chinchulkar (aka omnipresent), and I’m that person who spends their weekdays as an SDE and weekends hunting flags like they’re Pokémon. Currently sitting in the top 1% on TryHackMe (check out my profile), I’ve developed what my friends call an “unhealthy obsession” with CTFs. I prefer to call it “passionate dedication.” 😄

This past weekend, I dove into the v1t CTF, and I wanted to share not just how I solved one of the challenges, but also my thought process — because honestly, that’s where the real learning happens.

🦆 The Challenge: Duck Company

Category: OSINT Description:

I found this company selling this cute wooden duck for the halloween but i forgot where link web store :< can you help me find it

Flag format: v1t{example.com}

What we got: A single image of an adorable wooden duck with magical vibes and a pumpkin (perfect for Halloween, honestly).

When I first saw this, my immediate thought was: “Okay, someone’s testing my Google-fu.” But as any seasoned CTF player knows, it’s never just about Googling. Or is it? 🤔

🔍 My Approach: The OSINT Methodology

Here’s the thing about OSINT challenges — they’re like detective work, but instead of a magnifying glass, you’ve got browser tabs. Lots of them.

Step 1: Check the Metadata (Because Why Not?)

My first instinct with any image-based OSINT challenge is to check for hidden metadata. You’d be surprised how often people leave GPS coordinates, camera info, or other juicy details in their photos.

Tool of choice: exiftool

exiftool duck_image.jpg

I ran this expecting… well, something. But nope — nothing particularly useful jumped out. No hidden coordinates, no secret messages in the EXIF data. Just a regular image file.

Lesson learned: Always check metadata first, but don’t be disappointed when it’s a dead end. It’s about eliminating possibilities.

Step 2: Reverse Image Search (The Classic Move)

Alright, metadata was a bust. Time for the bread and butter of OSINT: Google Reverse Image Search.

I uploaded the image to Google Images and hit search. Within seconds, results started pouring in:

Press enter or click to view image in full size

Search results from google

Bingo! 🎯

The search revealed this was a “DCUK Magician Duckling” — available on Amazon, eBay, and… wait for it… a dedicated website.

Now, here’s where I could’ve just grabbed the first result and called it a day. However, something I’ve learned from countless CTFs (and a few embarrassing incorrect submissions) is: always verify before submitting.

Step 3: Digging Deeper (The Patience Game)

The flag format was v1t{example.com}, which meant I needed a domain name. Amazon and eBay are retailers, not the actual company. So I kept scrolling through the results.

That’s when I spotted it: www.dcuk.com

I clicked through and landed on the official DCUK website. And there it was — the exact wooden duck from the challenge image, sitting pretty in their product catalog.

Press enter or click to view image in full size

The “aha!” moment: This wasn’t just a place selling the duck — this was the company that makes them. Given the challenge name was literally “Duck Company,” this had to be it.

🚩 The Flag

v1t{dcuk.com}

Submitted. Accepted. Victory!

Press enter or click to view image in full size

What I Learned (And What You Can Take Away)

1. Don’t Rush the First Answer

When I saw Amazon and eBay in the results, I could’ve stopped there. But CTFs reward thoroughness. The extra 30 seconds of scrolling made all the difference.

2. Context Matters

The challenge name “Duck Company” was a hint. In OSINT, every piece of information — even the challenge title — can guide you to the answer.

3. Methodology Over Speed

I could’ve skipped the metadata check, but having a systematic approach means you don’t miss obvious wins when they do appear in other challenges.

4. Tools Are Your Friends

• exiftool — Metadata extraction
• Google Reverse Image Search — Visual recognition
• Critical thinking — The most important tool (can’t install this one via apt-get, unfortunately)

OSINT Tools I Keep in My Arsenal

For those just getting into OSINT challenges, here are some tools I regularly use:

• exiftool — Image metadata analysis
• Google Reverse Image Search — Visual identification
• TinEye — Alternative reverse image search
• Sherlock — Username enumeration across platforms
• theHarvester — Email and subdomain gathering
• Maltego — Relationship mapping (for complex investigations)

🤔 How Would You Have Solved This?

Here’s what I’m curious about: Would you have approached this differently? Maybe used TinEye instead of Google? Or perhaps you have a favorite OSINT framework I should check out?

Drop your thoughts in the comments — I’m always looking to learn new techniques from the community!

🎯 What’s Next?

This is just the first of my v1t CTF writeup series. I’ll be publishing solutions to more challenges from this CTF, covering categories like:

• Web exploitation
• Cryptography
• And more OSINT (because who doesn’t love a good internet treasure hunt?)

Want to connect?

• TryHackMe Profile — Let’s compete!
• LinkedIn — For the professional stuff
• Twitter/X — CTF updates and cybersecurity musings

If you found this helpful, give it a clap 👏 (or fifty — I won’t judge), and follow for more CTF writeups and cybersecurity content!

📚 Final Thoughts

OSINT challenges are my favorite because they mirror real-world scenarios. Whether you’re investigating a security incident, doing reconnaissance for a pentest, or just trying to find where someone bought that cool wooden duck, the skills are the same.

The internet is full of information — you just need to know where to look and how to connect the dots.

Happy hunting, and may your flags be plentiful! 🚩

P.S. — If you’re wondering, yes, I did consider buying the duck. It’s genuinely adorable. But my desk is already full of CTF-related impulse purchases, so I showed restraint. This time. 😅