Interesting stuff related to Computer Science, Gaming or Whatever

Hello Everyone, This is a gamehacking tutorial targeting Need for Speed Most Wanted 2012. In this tutorial, I will register a hotkey that when pressed, will raise all the opponents by 20m to the sky (and by opponents I mean both cops and race opponents), lets start :D We'll start by searching for the z coordinate of our car (a value that indicates its height), we must keep in mind that the z axis might be inverted (ie. when our height increases, z might increase or decrease) -This value has two possible types : Float and Double (because it's a real number) - There are two possible cases :     -> Getting more height increases z     -> It decreases z So there will be a total of 4 cases, we can use different tabs to speed up the process, but we'll start with the most likely (Float type, because FPU arithmetic is faster on single floats, game programmers like to use it for coordinates and values that are involved in lots of calculations)  Each time, we

Hello, today I'll crack a .NET crackme, it was featured on Himayatic CTF, November 2nd 2017. Download link : https://drive.google.com/open?id=0B7U3AsTA9UVfRHdTY2hfQzZrQm8 Let's start :) First, we notice that it's a .NET crackme, it asks for a serial, and displays " Wrong Serial ... !!! " when we enter a random one. We open it in a .NET decompiler (I used dnSpy, which is a fork of ILSpy), and we immediately locate this function :   The code looks obfuscated, we follow the N and M functions in the namespace A, and we find this: Looks like they used CryptoObfuscator to obfuscate the code, we'll use a .NET deobfuscator (de4dot : https://github.com/0xd4d/de4dot ) to clean the executable. We open the cleaned executable in dnSpy, the obfuscation is gone! But it's a wrong flag, if it were the real flag, the else part would display "Wrong Serial ... !!!" and not "Illusion ... !!" (of course, we still try it, who know