Bugcrowd Mystique Hint #1

bugcrowd-mystique-hint-1.java

public class Test {
				...

        //...... generate registration payload
        //String payload = String.format("{\"username\":\"new_user\",\"publicKey\":\"%s\"}", encodedpubkey);
        String payload = String.format("{\"username\":\"new_user\",\"publicKey\":\"%s\"}", encodedpubkey);

        //...... register user
		var uri = URI.create("http://127.0.0.1:3000/register");
        var client = HttpClient.newHttpClient();
        HttpRequest request = HttpRequest.newBuilder()
                .uri(uri)
                //.POST(HttpRequest.BodyPublishers.ofString(payload))
                .POST(HttpRequest.BodyPublishers.ofString(payload))
                .headers("Content-Type", "application/json")
                .build();
        try {
        var response = client.send(request, HttpResponse.BodyHandlers.ofString(StandardCharsets.UTF_8));
            System.out.println(response.statusCode());
            System.out.println(response.body());
        
        } catch (IOException ex) {
        } catch (InterruptedException ex) {
        }
      
    }
}