Today I’ve registered my account on HackerOne.com. And in this post, I want to share with you my first write-up from one of the CTF challenges from Hacker101. Hacker101 is a free class for web security. Whether you’re a programmer with an interest in bug bounties or a seasoned security professional. In my case, I’m new to the Infosec world and I want to learn myself into the world of Cyber Security.
A little something to get you started
Difficulty | Name | Skills |
Trivial (1 / flag) | A little something to get you started | Web |
After I started this challenge, I landed on this webpage.

As I check the source code of this webpage, I see that the background is an image.
<!doctype html> <html> <head> <style> body { background-image: url("background.png"); } </style> </head> <body> <p>Welcome to level 0. Enjoy your stay.</p> </body> </html>
I placed the image path into the web URL: http://35.190.155.168/e2c36f1f4d/background.png and I have found the flag.

This was a really, really and really easy CTF challenge. I will post more write-ups from Hacker101. After each challenge, the level of difficulty becomes more and more difficult. Looking forward to it!
Thanks for reading!