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Out of my way

  • Published: 02/07/2024 (#4/11 in round)
  • Category: Web
  • Points: 55
  • Author: kshau & Vipin

are you http? because without you im ://

Attachments

Hint

This hint costed 15 points.

Reveal hint

robots.txt is a great place to check out

Write-up

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