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badge-jwt-basics | Level: Easy | Total Lab Runs: 0 | Premium Lab |
A REST API is running on the target machine and uses JWT based authentication. The API uses a weak JWT secret key for signing the tokens.
In this challenge, the attacker has obtained the credential of a user and needs to brute force the weak JWT secret key used by the REST API.
Objective: Determine the secret key and leverage it to read the flag stored on the target server!
|/auth/local||Authenticates the user and returns JWT authentication token||POST||identifier, password|
|/users||Creates a new user||POST||username, password, email, role, provider|
|/admin||Access Strapi Admin Panel||GET||-|
- This lab is dedicated to you! No other users are on this network :)
- Once you start the lab, you will have access to a Kali GUI instance.
- Your Kali instance has an interface with IP address 192.X.Y.2. Run "ifconfig" to know the values of X and Y.
- The REST API should be running on port 1337 on the machine located at the IP address 192.X.Y.3.
- Do not attack the gateway located at IP address 192.X.Y.1
- The secret key has 4 digits, each from the range of 0 to 9.
- The tools required to crack the secret key are available in "/root/Desktop/tools" directory.
NOTE: This badge challenge is for evaluation, so we don't provide hints or explanations for this. Hence, contact us on support email only if you are facing a technical issue.
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Technical Support for this Lab:
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