Starbucks: Java Deserialization RCE via JBoss JMXInvokerServlet/EJBInvokerServlet on card.starbucks.in

I found an open JMXInvokerServlet/EJBInvokerServlet and normally I should be able to get a shell just by doing that. However I think due to some egress filtering on the box I've been having issues getting a shell to run. Invokers: https://card.starbucks.in/invoker/EJBInvokerServlet and...