So I'm learning Reverse Engineering / Software cracking. I have a program that I am practicing on that requires a dongle in order for the program to start. From looking through the disassembly of the program I figured out that at some point of the execution the program is calling winscard.dll When the dongle is inserted, in Windows it comes up as a smart card reader. When there is no dongle inserted, the software gives you a MessageBox stating The dongle not found. I've found this execution point in user32.dll, but I can't figure out at which point does the main software call this. I'd like to be able to figure out at what point does the software call winscard.dll and what it's looking for as a return. I've tried to figure this out with Ollydbg and also IDA Pro.

Any help for someone trying to learn would be great. First please not that the dongle may be used for cryptographic purposes, so there might be no point in trying to skip the check. Second, winscard. Chinnari Pellikuthuru In Hindi Episode 1100. dll can not be called.

I am trying a different approach. W32DASM has lots of mistakes and is less powerful than IDA. I decided to make this tutorial for newbies as a First Approach to IDA so that their first tool is a powerful and helpful one for learning how to crack programs. IDA offers Auto Comments so the Assembler language isn't. Dec 23, 2004. Decompiling and Disassembling Software. Decompilation is the process of transforming a binary executable—that is, a compiled program—into a higher level symbolic language that is easier for humans to understand. Usually this means turning a program executable into source code in a language like C.

Try to set a breakpoint on common methods like SCardEstablishContext and SCardListReaders to find the right check. For example, if no SmartCard is connected to the system at all, SCardListReaders will return 0x8010002E ( SCARD_E_NO_READERS_AVAILABLE). I'm assuming the second check would involve the mszReaders parameter of the function to check if the right reader is connected. If you knew the location of the 'success'-path (i.e. The address which is executed when everything is fine) you could try to jump there from these locations, else you will have to go though the next branches as well.

Ajay Yadav is an author, Cyber Security Specialist, SME, Software Engineer, and System Programmer with more than eight years of work experience. He earned a Master and Bachelor Degree in Computer Science, along with abundant premier professional certifications. For several years, he has been researching Reverse Engineering, Secure Source Coding, Advance Software Debugging, Vulnerability Assessment, System Programming and Exploit Development. He is a regular contributor to programming journal and assistance developer community with blogs, research articles, tutorials, training material and books on sophisticated technology.

His spare time activity includes tourism, movies and meditation. He can be reached at om.ajay007[at]gmail[dot]com • • • •.