Java-Deserialization-Cheat-Sheet VS marshalsec

It can be known that this variable is used to specify the location of the bootstrap configuration file. The supported file formats include ymland properties. Friends who are familiar with Java security may think that the parsing of yml will have a problem of deserialization. If the content of the configuration file is here, we If you can control it, there is a possibility that it can be exploited.

I'm using this: https://github.com/mbechler/marshalsec as an LDAP server.

According to the introduction in https://github.com/mbechler/marshalsec/blob/master/marshalsec.pdf, in addition to the javax.script.ScriptEngineManager class , we can also use the com.sun.rowset.JdbcRowSetImplclass to complete the exploitation through JNDI injection. The payload is as follows

Not sure if that method actually works since LDAP is a different protocol than HTTP? If you're running an HTTP server as the receiver, then your server is just going to be confused by the connection and it might not log anything. You either want to run an LDAP server like https://github.com/mbechler/marshalsec , or have some logging method that triggers on any TCP connection, or use a service like dnslog.cn that can log for you. (although I've seen a lot of companies are now specifically blocking that domain which seems silly).