creator Intigriti's October challenge by chux

Find the FLAG and win Intigriti swag! 🏆

Rules:
  • This challenge runs from 06/10/2025 6:00 PM until 13/10/2025, 11:59 PM UTC.
  • Out of all correct submissions, we will draw six winners on Wednesday 15/10/2025:
    • 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 leverage a remote code execution vulnerability on the challenge page.
  • Shouldn't be self-XSS or related to MiTM attacks.
  • Should require no user interaction.
  • Should include:
    • The flag in the format INTIGRITI{.*}
    • The payload(s) used
    • Steps to solve (short description / bullet points)
  • Should be reported on the Intigriti platform.
Test your payloads down below and on the challenge page here!

Let's pop that shell!