- Published: 02/07/2024 (#4/11 in round)
- Category: Web
- Points: 55
- Author: kshau & Vipin
are you http? because without you im ://
This hint costed 15 points.
Reveal hint
robots.txt is a great place to check out
Reveal write-up
When visiting the website, we see that we have the first half of the flag: csd{lptzubJCKtbrLn
. Websites have common
files such as robots.txt
and sitemap.xml
. The robots.txt
file is a file that tells web crawlers (like Google)
restrictions when crawling the website. When visiting /robots.txt
, we see this line:
Disallow: /bobots2
This tells us that there is a directory called /bobots2
that should be hidden from web crawlers and search engines.
When visiting that directory, we don't see anything interesting at first. However, when we view the page source using
right-click > View Page Source or DevTools, we can see the second half of the flag hidden.
The flag is in reverse, so we can reverse it again to get the full flag.
Flag: csd{lptzubJCKtbrLnRceminJErKwzrIAZo}
Write-up by GodderE2D