Frida function package (II)

First, the library package

(1) .hook jni function call

https://github.com/Areizen/JNI-Frida-Hook

 

Second, the own package

function str2ArrayBuffer(str) {

    var buf = new ArrayBuffer(str.length); // 1 bytes for each char

    var bufView = new Uint8Array(buf);

    for (var i=0, strLen=str.length; i < strLen; i++) {

        bufView[i] = str.charCodeAt(i);

    }

    return buf;

}

//Get base address of library
var libfoo = Module.findBaseAddress("libfoo.so");
//Calculate address of variable
var initialized = libfoo.add(ptr("0x400C"));
//Write 1 to the variable
Memory.writeInt(initialized,1);