1. W32dasm Tutorial

Step 2: CRACKING THE PROTECTION: Now, run Win32Dasm. On the file menu open DISASSEMBLER OPEN FILE TO DISASSEMBLE.

Select Software X’s executable file in the pop up window that will appear (e.g. Software X.exe).

Dec 24, 2011 How to crack software – a beginner’s tutorial! Practical training, using W32Dasm. You will also learn to crack some simple programs. In this part, the second part of the cracking tutorial, you will learn to use the most important tools of the common cracker: W32Dasm and HIEW. You will also learn to crack some simple programs. The tutorials are divided into 3 parts: Part 1:Introduction, tools and the basics of cracking. Part 2: Practical training, using W32Dasm, and HIEW.

W32Dasm may take several minutes to disassemble the file. When W32Dasm finishes disassembling the file it will display unrecognizable text; this is what we want. Click on the String Data References button. Scroll through the String Data Items until you find Software X’s error message.

When you locate it, double click the error message and then close the window to return to the Win32Dasm text. You will notice that you have been moved somewhere within the Software X’s check routine; this is where the error message in generated. Now comes the difficult part, so be careful. To crack Software X’s protection you must know the @offset of every call and jump command. Write down every call and jump @offset number that you see (You have to be sure, that the OPBAR change its used color to green). You need the number behind the @offset without the “h.”.

Now open HIEW, locate Software X’s executable, and press the F4 key. At this point a pop up window will appear with 3 options: Text, Hex, and Decode.

Click on “Decode” to see a list of numbers. Now press the F5 key and enter the number that was extracted using Win32Dasm. After you have entered the number you will be taken to Software X’s check routine within HIEW. To continue you m ust understand this paragraph. If the command that you are taken to is E92BF9BF74, for example, it means that the command equals 5 bytes. Every 2 digits equal one byte: E9-2B-F9-BF-74 = 10 digits = 5 bytes. El amor desde punto de vista filosofico. If you understood this then you can continue.

W32dasm Tutorial

Press F3 (Edit), this will allow you to edit the 10 digits. Replace the 5 bytes with the digits 90. In other words, E92BF9BF74 will become (90-90-90-90-90). After you complete this step press the F10 key to exit. You just cracked Software X!