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 Tuesday, June 27 2017 @ 05:40 AM CEST

Patching Taskmgr.exe

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TutorialsLevel : newbie

Type: Patching
Victim: Taskmgr.exe
Protection: register value
Tool: Ollydbg

Intro:
Ever had the problem when you try to start taskmanager it says it has been disabled by your administrator? Well that can be solved, off course ;) There is place in the registry where you can disable or enable the use of Taskmg.exe (I am talking about the original one which comes with your windows installation).


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Gabor's CrackMe 2 Solution

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TutorialsLevel : newbie

This tutorial is only intended for those who are really new to cracking and reverse engineering. Still, it's a step every cracker had to take at one stage, cracking something simple. This tutorial should teach the basics of unpacking a UPX packed file, restoring the IAT in an executable and then we'll go fishing for a hard-coded serial in our unpacked executable. The tools used in this tutorial are all freely available on the internet and you won't have to go looking for them.


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Most Recent Post: 05/24 10:25PM by Helios

clone keygenme

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CrackmesLevel : 3/10
OS : windows
Language : ASM


============
clone keygenme
============

I was playing with some crackme template and decide to make small keygenme. Objectve of this crackme is to make valid keygen. No patching! Algorithm is very easy.


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Most Recent Post: 03/16 11:51AM by SKiLLa

Introduction to reverse engineering software

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TutorialsI stumbled accross this introduction to reverse engineering. Thought it might be useful to some of our visitors. Unfortunately the document is not 100% complete. On the other hand it features some interesting topics, including some unix stuff.


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Most Recent Post: 02/01 10:07PM by Fredro

Luhn (mod-10) formula

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CodingLevel : beginner

OS : windows
Language : ASM

This formula is often use to check the validity of a credit card.
Think of it as a CRC checksum, it validates checksums of creditcards.

For more information regarding the algo, check out www.reversing.be/forum/viewtopic.php?p=2103

Now, let's get coding. I've written a DLL with function CheckCC() using fasm. The function accepts one parameter (buffer).


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Most Recent Post: 01/24 03:22PM by BoR0
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