Broken Chain

🔗 Can you break through this chain of security controls?

Hard 20 Dec 2025 Free Access Solution (Pro)

A sophisticated web application environment hosts multiple interconnected services with layered security mechanisms. Each security control presents a unique challenge, but when properly chained together, even the most robust defenses can be systematically compromised. 🎯 Time to demonstrate advanced web application penetration testing skills!

Flags

Points

15%

Success Rate

Start Your Challenge

Launch your dedicated machine to begin hacking

~1-2 min setup

Dedicated server

Private instance

Industry standard

Open the target and find the flags

flag-user.txt

+35 pts

Open the target and find the flags

flag-root.txt

+35 pts

Broken Chain

Hard 70 points

Writeup Guidelines

Share your solution approach, methodology, and insights. Your writeup will be reviewed before being published to the community. Earn +5 bonus points when your writeup is approved!

Requirements:

No flag content: Do not reveal actual flag values or passwords in your writeup
Include lab link: Your writeup must contain a direct link to this lab for reference
Educational focus: Explain your methodology, tools used, and learning insights

Writeup URL *

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Remember to include this lab's URL in your writeup: https://hackerdna.com/labs/broken-chain

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I confirm that my writeup includes a direct link to this lab

Your writeup must reference this lab's URL: https://hackerdna.com/labs/broken-chain

I confirm that my writeup does NOT contain flag content or critical information

Do not include actual flags, passwords, or other sensitive information that would spoil the challenge