Type Juggling Bypass

Can you exploit PHP's weak typing to break into the admin panel?

Challenge 23 Nov 2025 Pro Exclusive Solution Available

A login portal stands between you and the flag, protected by MD5 hashing. The developer used loose comparison instead of strict comparison, creating an exploitable weakness. Master the art of PHP type juggling and bypass authentication without knowing the real password. Can you turn this subtle vulnerability into complete access?

Flags

Points

100%

Success Rate

Start Your Challenge

~1-2 min setup

Dedicated server

Private instance

Industry standard

Open the target and find the flags

Flag

+5 pts

Type Juggling Bypass

Challenge 5 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 *

Link to your blog post, GitHub repository, or any platform where you've published your writeup
Remember to include this lab's URL in your writeup: https://hackerdna.com/labs/type-juggling-bypass

Language *

Help others find writeups in their preferred language

Confirmation Required

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

Your writeup must reference this lab's URL: https://hackerdna.com/labs/type-juggling-bypass

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