EventEmitter coming with node.js is handy most of the time, and I implement this useful utility in C++ after finishing writing Functor. Yes, we need Functor to make it much more easier to write this fabulous utility. (Why don't you use lamdba? I'll talk about that later in this post)

It's extremely simple to use EventEmitter in node.js

const EventEmitter = require('events');

class MyEmitter extends EventEmitter {}

const myEmitter = new MyEmitter();
myEmitter.on('event', () => {
    console.log('an event occurred!');
});
myEmitter.emit('event');

——https://nodejs.org/api/events.html

And the C++ version of EventEmitter need to be as easy as it is in node.js. As a matter of fact, this class made it.

#include <iostream>
#include <sstream>
#include <thread>
#include <vector>
#include "EventEmitter.hpp"

using namespace std;

class emitter : public EventEmitter {
};

int main(int argc, const char * argv[]) {
    emitter emitter;
    emitter.on("event", [&emitter](int data) {
        ostringstream osstream;
        osstream << "data: " << data << '\n';
        std::cout << osstream.str();
    });

    vector<thread> threads;
    for (int i = 0; i < 10; i++) {
        threads.emplace_back([&emitter, i]() {
            emitter.emit("event", i);
        });
    }

    for (auto &t : threads) t.join();
}

Continue reading A simple EventEmitter in C++ →

This post demonstrates how to avoid XREF in Hopper and IDA.

In other language:
中文(简体), 日本語

Continue reading Avoid XREF in Hopper and IDA →

This post is mainly to demonstrate some possible protections against Cycript/Runtime. There are 5 parts.

• Stop cycript's choose(ClassName)
• Memcpy
• Move to our own memory blocks
• Useless setter/getter
• Encrypt memory data

Continue reading Protection against Cycript/Runtime →

There is a historic way to present your alert in other apps, which can date back to iOS 5 or even easier.

You can refer to those links.
Can you use CFUserNotification with IOS 5.1
Display CFUserNotificationDisplayAlert on iPhone Lock Screen
There is even a wiki page on iPhoneDevWiki, CFUserNotification.
(Update 1) Here is the official source code from Apple.

Recently, this guy who comes up with a possible way of using this old method to steal Apple ID.

Continue reading Bypass sandbox and present an alert in other apps →

Yesterday I wrote a post about How to specific a port to device with iOSOpenDev. It's more like a tutor due to lacking of the process of analysis. So I decide to write about the process how did I analyze it so you can add this feature on yourselves when iOSOpenDev updates someday.

I'll keep this post as simple as I can, but I'll assume you've already had some basic knowledge.

Continue reading The analysis of how to specific a port to device with iOSOpenDev →

With increment of swift, it's not ridiculous that using swift when you do some jailbreak development. If the tweak can get a better UI and I can code easier, there is no reason to refuse swift.

But one thing we should care about is that, Xcode 6 (and later) will link swift's dylib something like @rpath/libswiftDarwin.dylib.

That means if you didn't put those dylib files into a directory named `Frameworks` which right under your executable file's directory, it will just crash when you try to launch them.