Thread: Need Advice.......

Hi guys. I need some advice in Writing a Simple Brute Force Attack program. I protected a PDF file with a 4-digit password. Now I want to open this PDF file using a C program by applying Brute Force Attack Method. I have Knowledge of File Handling but I dont know that How to apply the String combination in order to Open the File.. OR which function is used to do so...???? say my file is... "Crackme.pdf".. Please demonstrate me a 2-3 line of code explaining how to apply a combination of String on the File... I'll do the Rest... I just want to Learn to Write Brute Force Programms..
Thank You !!! ^_^

See the forum guidelines:

6. Messages relating to cracking, (erroneously called "hacking" by many), copyright violations, or other illegal activities will be deleted. Due to the overlapping boundaries of code with malicious intent, and other legitimate uses of it, the moderators will assess each potential infraction on a case by case basis.

Admittedly, the core of your question (generating combinations) has such wide application that it is "harmless", but phrased as such, I am closing this thread.