Web Reference: Mar 2, 2025 · After going through the code, I learned that JWTs were being generated using HMAC256 and a secret key. Now, the only thing that kept me from creating my own JWT with my custom role was that... Mar 31, 2023 · A writeup detailing the solution to the “Java Code Analysis!?!” challenge from picoCTF 2023. Inside controllers directory we can find UserController.java, where we can see this endpoint: Now I will use Postman (because I'm lazy) and send some requests with new JWT to update our role and read the flag.
YouTube Excerpt: Modify a JWT token that has a non-random signing key.
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Picoctf Java Code Analysis Ctf Net Worth 2026: Salary, Income & Wealth Net Worth & Biography

Estimated Worth: $9M - $52M
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Last Updated: April 7, 2026
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