With the 100+ fields supported in MuSL, generating fuzz test-cases is completely automatic. This approach to fuzzing allows you to test the security and resilience of proprietary application protocols across all layers and still account for application-specific extensions to the protocol in a stateful manner.

Here are some examples you can start with:

• SIP message
• iCal calendaring format
• XMPP message

Mu Studio breaks down complex, structured strings in MuSL automatically to generate fine grained fuzz tests. For example, this simple structure is equivalent to this more complex structure, even though they both serialize to the same bytes. Try editing the MuSL below and see what test-cases you can generate!