Hey everyone,
I am a bit rusty/inexperienced to cracking and was a bit stumped on how I can crack a program called GigaMillions. Its crippleware and reads the license key from a text file called key.txt.
It would be relatively simple, if it weren't for the fact that it has no prompt telling me whether or not I'm registered or if my key is correct.
Can anyone help guide me through this?
You can download it for yourself here: http://sites.google.com/site/gigamillionsproject/Home/giga765.zip
Thanks in advance!
Cracking → Free Talk about Cracking → How to crack an app which reads licence from a text file.26 Jun 2009, 15:24 You have to login or register to post comments. |
1st. You will have to set a breakpoint on the Readfile API call , when olly breaks(Or any other debugger of your choice)you see where it compares the bites of the text file and then It decides to jump to -Unregistered or Registered. Change The conditional jump to a regular jump(JMP) and it will always jump to the Registered mode. But other programs use aonther methoud - It reads the The bytes from the file and the bytes act as code and it changes the program and how it functions . so changing a JMP wont help there , because it will just go on to Unregistered. (You see the program reads the file - axample- . License.text. and it contains code , and it reads that file(If it exists) even if the code is wrong and invalid , and the code in the license.text file modifies the programs behavior , no matter what the code is.)
Hope this helps , If you don't understand what I just said........WHO CARES!