个人向frida

frida

java层部分是抄https://zyzling.gitee.io/2020/05/12/Frida%E5%AD%A6%E4%B9%A0%E7%AC%94%E8%AE%B0/

还是真机使用吧

配置就不讲了

我将frida-server放在

/data/local/tmp

所以

    adb shell
    cd /data/local/tmp
su
./frida-server

常用命令

命令行相关

获取所有进程名称

frida-ps -U

获取所有进程包名

adb shell ps

启动 hook 即输入后会强制重启该app

frida -U -l [js] -f [包名]

附加hook

frida -U -l js脚本位置 包名

emm 除非自动打?否则感觉还是用js和命令行写方便

java层hook

Java.perform

相当于main

Java.perform(function(){
    //在这里面写Hook的代码
})

Java.choose

用于查找堆中指定类的实例。

声明为 Java.choose(className,callbacks)

可以用来找到实例后调用函数 面对动态函数时使用

Java.choose("top.zyzling.User",{
    onMatch:function(){
        //onMatch回调会在找到类的实例后调用，也就是说内存中有多少实例，就会调用多少次
    },
    onComplete:function(){
        //onComplete回调会在所有onMatch完成后调用
    }
})

Java.available

常用脚本

java层hook一个静态方法来调用so的静态方法

描述不清捏

hook这个函数

来调用这个

Java.perform(function () {
    var ClassName = Java.use('com.crackme.bbbbutton.MainActivity');
    console.log("Find ClassName Successfully!");//定位类成功！
    var jniclass = Java.use('com.crackme.bbbbutton.JniCheck');
    ClassName.a.implementation = function () {
        console.log("111111")
        var test = Java.array('byte', [0, 0, 0, 0, 0, 0, 0, 0, 2, 3, 2, 1, 1, 0, 3, 2])
        var t
        t = jniclass.check1(test)
        console.log(t)
        return false
    }
});

直接调用即可

调用so中的动态方法

console.log("111");
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var UpdatePtr = new NativeFunction(Module.findExportByName("libd3mug.so", "update"), 'void',  ['int']) 
for (var i = 0; i < trueValue.length; i++)
{     UpdatePtr(trueValue[i]) } 
var GetFlag = new NativeFunction(Module.findExportByName("libd3mug.so", "get"), 'pointer', []);
var result = GetFlag();
console.log(ptr(result));
console.log(hexdump(result, { length: 32 }));