Cracking Diablo 2 without a CD: A Beginner's Guide to Reverse Engineering

When searching for ways to play Diablo 2 without a CD, many gamers have found themselves stuck with the dreaded message 'Diablo II was unable to detect a Disc in your CD-ROM drive.' However, those who are willing to dig deeper can uncover the secrets of cracking this popular game. In this article, we'll explore the process of reverse engineering Diablo 2's executable file to create a no-CD modification.

Initial searches for strings related to 'Diablo II' and MessageBoxes with the title 'CD-ROM drive error' using tools like OllyDbg and W32Dasm revealed that the address is located around the block starting from 0040122D. By opening Diablo II.exe in OllyDbg, we find that the base address is the usual 00400000, and the Entry address is 004014E3.

As a beginner myself, I was surprised to learn that Diablo II's executable file wasn't packed with any encryption or obfuscation techniques. According to PEiD, Diablo II.exe was built using Microsoft Visual C++ 6.0, which means it lacks packing. This made the task of reverse engineering much easier.

After spending around 10 hours working on reversing Diablo II's executable file for version 1.09b and learning more about reverse engineering along the way, I'm excited to share my findings with you. According to Onyx and other mods, since Blizzard introduced the 'no-cd patch' in version 1.12+, it's possible to create our own no-cd modifications for previous versions of the game.

In this article, we'll explore the process of modifying Diablo II.exe for version 1.09b to make it no-CD compatible. By using reverse engineering techniques and learning more about the inner workings of the game's executable file, you can join me in creating your own no-cd modifications for Diablo 2.

In conclusion, cracking Diablo 2 without a CD is possible with some dedication and knowledge of reverse engineering. Whether you're a beginner or an experienced gamer, this guide should provide you with a solid starting point for creating your own no-cd modifications for this popular game.

Diablo 2 cracked no cd