Hook all overloads - Java/Android - Frida

hookalloverloads.js

function getGenericInterceptor(className, func, parameters) {
	args = []
	for (i = 0; i < parameters.length; i++) { 
        	args.push('arg_' + i) 
    }
    var script = "result = this.__FUNCNAME__(__SEPARATED_ARG_NAMES__);\nlogmessage = '__CLASSNAME__.__FUNCNAME__(' + __SEPARATED_ARG_NAMES__ + ') => ' + result;\nconsole.log(logmessage);\nreturn result;"
    
    script = script.replace(/__FUNCNAME__/g, func);
    script = script.replace(/__SEPARATED_ARG_NAMES__/g, args.join(', '));
    script = script.replace(/__CLASSNAME__/g, className);
    script = script.replace(/\+  \+/g, '+');

    args.push(script)
	cb = Function.apply(null, args)
    return cb

}

function hookall(className, func, cb) {
    const clazz = Java.use(className);
    overloads = clazz[func].overloads;
    for (i in overloads) {
        if (overloads[i].hasOwnProperty('argumentTypes')) {
            var parameters = [];
            for (j in overloads[i].argumentTypes) {
                parameters.push(overloads[i].argumentTypes[j].className);
            }
            const cb = getGenericInterceptor(className, func, parameters);
            clazz[func].overload.apply('this', parameters).implementation = cb;
        }
    }
}


if (Java.available) {

    // Switch to the Java context
    Java.perform(function() {
        const JavaString = Java.use('java.lang.String');

        //Hook all init overloads
        hookall('java.lang.StringBuilder', '$init', 'a');
	})
}