h1-ctf: First CTF ever!

Pretext Started looking into hacking this autumn and then found out HackerOne was doing a Christmas themed CTF. Further investigation showed that the deplorable Grinch might be up to no good again - Christmas is in danger! TLDR Lots of hacking took place, the Grinch was stopped, Christmas saved a...

h1-ctf: hackyholidays CTF Writeup

Summary: As per the referenced blog entry, the Grinch has gone hi-tech this year with the intentions of ruining the holidays. The challenge was about infiltrating the Grinch's network and take it down. As outlined on https://hackerone.com/h1-ctf, the domain hackyholidays.h1ctf.com was in scope. I...

h1-ctf: Hacky Holidays Writeup

On December 12th, 2020, the CTF became live and the scope that we are allowed to attack was In Scope Domain - hackyholidays.h1ctf.com Our main motive was to infiltrate his network and take him down. The challenges appeared one by one till 24th of December. Here we will be going through all the...

h1-ctf: Grinch Networks compromised!

Grinch Networks compromised! For fast triage/validation and inspired by @manoelt in other CTF, I made a bash script to find and print all the 12 flags of this CTF. The script uses curl, wget, google-chrome headless for flag 2, unzip, grep and sed. If any of these commands is missing, the script...

h1-ctf: Invading Grinch Network and Saving Christmas

How we saved Christmas As usual with H1 CTF challenges we are provided with a target URL. In our case it is the following: https://hackyholidays.h1ctf.com/ We started by visiting the URL and see what is going on. All we could see is a page with an image with a warning message. F1125722 We quickly...