Web Reference: After start of the instance picoCTF will provide you source code of the site and link to running instance. Site has login screen: And main screen with books. We can't access any of them except the first one. Let's dive into code. There are some files, that are interesting to us. Mar 2, 2025 · I printed the content of UserService.java file and I noticed that they used JWTs (JSON Web Token). JWTs are often used for user authentication and authorization, so I figured there might be a... Mar 18, 2023 · To get started we are given the username “user” and password “user” to log into the BookShelf Pico web application. We are also given the source code of the application. Taking a look at the src/main/java/io/github/nandandesai/pico/security subdirectory of the project, we see that it uses JWT.
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