Find a way to execute arbitrary javascript on the iFramed page and win Intigriti swag.

Rules:

• This challenge runs from the 19th of September until the 25th of September, 11:59 PM CET.
• Out of all correct submissions, we will draw six winners on Monday, the 26th of September:
  • Three randomly drawn correct submissions
  • Three best write-ups
• Every winner gets a €50 swag voucher for our swag shop
• The winners will be announced on our Twitter profile.
• For every 100 likes, we'll add a tip to announcement tweet.
• Join our Discord to discuss the challenge!

The solution...

• Should work on the latest version of Chrome AND FireFox.
• Should execute alert(document.domain).
• Should leverage a cross site scripting vulnerability on this domain.
• Shouldn't be self-XSS or related to MiTM attacks.
• Should require minimal user interaction. There should be a page that when visited will present the victim with a popup after a few seconds.
• Should not use any previous XSS challenges on the intigriti.io domain
• Should be reported at go.intigriti.com/submit-solution.

Test your payloads down below and on the challenge page here!

Let's pop that alert!