reverse-engineering

So I tried debugging some simple C programs today ; First one being int main(){ int a ,b ; return 0 ; } Which when de-compiled gave me push ebp mov ebp,esp sub esp,008h because I need to have 8 bytes to store a and b in the current stack frame since they are local variable ! But when I try the same with Strings say int main() { char greeting[12] = "Pwnit2Ownit"; return 0; } Which when de-compiled gave me push ebp mov ebp,esp sub esp,0DCh 0DCh is 220 , But since the string is only 12 bytes long shouldn't the sub esp,0DCh be sub esp,00ch instead ? And can anyone share some links on how the

I have to develop a plugin for a program that uses dongle to activate.Just wondering can i crack the key of the usb or something else? I'm sure you can , but you might be running afoul of the various legislation regarding the act of reverse engineering content protection systems. I am, of course, referring to the American DCMA statues. In any event, as pure thought experiment, I might try the following: Clone the USB firmware image, and load it into a virtual USB port As you say, crack the key and the USB interface, and short-circuit the check in a virtual USB device. Locate the part of the

I'm implementing a performance analysis tool. One thing that I'm doing is to estimate the cost of a function call. In order to do that, I need to know if a given function is virtual in a shared library. For that, I have access to the shared library assembly. I have also a call graph of the execution. I cannot make anything during the execution, the analysis has to be done after the execution using the information I can obtain from the call graph and the shared libraries. The only way I've thought of is to extract the vtable from the library and look if my function is in the vtable, but I didn

I'm writing tool to parse and extract some data from cpuprofile file (file produced when I save profile report) and I'm having some troubles with precision of Self & Total times calculations. So, time depends on the value from field hitCount , but. When hitCount is small (<300) the coefficient between hitCount and Self time ~1.033. But as hitCount grows, coefficient also grows. So, when hitCount=3585, k is 1.057. When hitCount=7265: k=1.066. Currently I'm using 1.035 as coefficient, I tried to minimize error on my sample data. But I'm not happy with approximation. I'm not familiar with

I have a finished cordova project and i want to use proguard inorder to prevent others from reverse engineering the APK.But i have trouble doing this. In http://developer.android.com/tools/help/proguard.html It says that "When you create an Android project, a proguard.cfg file is automatically generated in the root directory of the project. " But i cannot find a such file. So how do i apply proguard to my app? Thank you Queen You need to uncomment below lines from your project.properties file To enable ProGuard to shrink and obfuscate your code, uncomment this (available properties: sdk.dir,

I am writing a DLL that gets injected into a game in order to play around with some reverse engineering. For a while I was able to successfully inject, eject and reinject as I made changes to the program. I'm using FreeLibraryAndExitThread to unload. After adding XInput to the program so I could catch user input, the game crashes with an access violation when I call FreeLibraryAndExitThread . Going from this post , I'm guessing that using XInput is leaving something 'live' in the program when I go to unload, and that's what's causing the crash. I'm honestly at a loss as to how to fix this.