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The REST API is running on the target machine and uses JWT based authentication. The
implementation of JWT is very crucial for the safety of an API. Another
important factor is the strength of the secret key used for signing the
tokens. This challenge is all about bruteforcing 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 signing key has 4 digits, each from the range of 0 to 9.
- hashcat, the tool required to crack the secret key is present in the lab.
The following activities are strictly prohibited on this website unless otherwise explicitly stated as allowed in the mission statement:
- Using automated scanners
- Using brute force attacks
- Denial of Service attacks
- Attacking other student machines in challenges where you might achieve a shell on the vulnerable system
- Attacking the lab infrastructure
Users violating the above will be either temporarily or permanently banned from the website.
If you are unsure about an activity, then please contact support to confirm that it is allowed on our website.
Technical Support for this Lab:
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