Looking at the code we see a test eax,eax followed by a jne 0041B54C You should now be at the following lines: Scroll down until you find “Invalid Registration Code” and double click it. A new window opens up with a list of all strings found in the file. To do this click on the String References button at the top of w32dasm. After the file has been disassembled, we will look for the string from the messagebox. We are opening the original WorldTV.exe file so we can work on the copy that we made. Run w32dasm and use it to open up WorldTV.exe. We are going to patch the jump that returns the invalid registration box. Let’s write that little message down and save it. Ahh, we get a nice little messagebox telling us “Invalid Registration Code”. That is important to note because it lets us know that it is checking for a registration key (maybe a keyfile or registry key) before the program even loads. It goes directly into the nag screen letting us know that it is not registered. Knowing that we will not need to unpack the executable lets us do a little examination of the protection scheme. That will make it all the easier to crack. Surprisingly, the target is not packed or protected. Open up PEiD and drag worldtv2.exe into it. It has become habit to first examine a target with PEiD to determine the packer or protector. Lets name it worldtv2.exe we will refer to it later Go to target folder in our case c:\program files\worldtv\ and make a quick backup that we can work on without fear of screwing up the file. Let us first get set up and ready to crack. In This is a tutorial we will cover serial fishing with Olly. Our target is a protected program that ask for serial Download Target bellow Hey dudes lets start Cracking today and lets see in the real world how Crackers phishing Serial from software.
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