frida hook classLoader

frida-hook-classLoader.js

function hook_classLoader() {
    Java.perform(function () {
        Java.enumerateLoadedClasses({
            onMatch: function (className) {
                try {

                    if (className == "om.b") {
                        var om_b = Java.use("om.b");
                        console.log(om_b);
                        om_b["o"].implementation = function (jVar) {
                            console.log(`om.b.o is called: jVar=${jVar}`);
                            this["o"](jVar);
                        };

                        om_b["p"].implementation = function (iVar) {
                            console.log(`om.b.p is called: iVar=${iVar}`);
                            this["p"](iVar);
                        };

                        om_b["r"].implementation = function (obj, str) {
                            console.log(`om.b.r is called: obj=${obj}, str=${str}`);
                            if (str == "before_login") {

                            }
                            let result = this["r"](obj, str);
                            console.log(`om.b.r result=${result}`);
                            return result;
                        };

                        om_b["s"].implementation = function (obj, str) {
                            console.log(`om.b.s is called: obj=${obj}, str=${str}`);
                            let result = this["s"](obj, str);
                            console.log(`om.b.s result=${result}`);
                            return result;
                        };

                        om_b["t"].implementation = function (obj, str, str2) {
                            console.log(`om.b.t is called: obj=${obj}, str=${str}, str2=${str2}`);
                            let result = this["t"](obj, str, str2);
                            console.log(`om.b.t result=${result}`);
                            return result;
                        };
                    }

                   
                } catch (error) {
                    console.log(error);
                }
            },
            onComplete: function () { }
        });
    });
}

frida-hook-classLoader.md

使用時機

1. 發Rreques之前
2. Activity 開始載入