frida-template.js

if (ObjC.available) {
    
    try {  
  
        // Classname to be hooked
        var className = ""; 
        // Full function name to be hooked including - or +
        var funcName = ""; 

        var hook = eval('ObjC.classes.' + className + '["' + funcName + '"]');

        Interceptor.attach(hook.implementation, {  
        
            onEnter: function(args) {  
                console.log("[+] Class Name: " + className);
                console.log("[+] Method Name: " + funcName); 
            },
            onLeave: function(retVal) {  
                console.log('Return Value: ' + ObjC.Object(retVal));
            }  
        }); 
        
    } catch(err) {
        console.log("[!] Exception: " + err.message); 
    } 
} else { 
    console.log("ObjC Runtime is not available!"); 
}