Once opened in Ghidra, we load into the top of the application. Analysis under Die shows that it's a ELF64 binary The file didn't have an extension on it, so it's likely not a Windows PE. Entering 1234 drops us out of the program. Although what is taught or my site and other reverse engineering sites may be applied to current applications.Ĭhecking the program in Linux, we see that it's looking for a key. I may through in an actual application but only if it's defunct and/or I have approval from the vendor. The reversing portion of my site is geared toward user-generated code, crackmes, reversemes, and keygenmes. Keygenning is similar to cracking with the addition of an external or in-line way to generate a key or serial the same way that the application does.Ĭan you crack X for me or put up a tutorial for it? Where a program may say to jump to a specific location in the program or memory, you can force the application to jump to a different location or not take a jump (usually goes hand-in-hand with cracking). Patching is the actual alteration of software. Reversing can include figuring out what an out-of-date piece of hardware does and how to change it so that it works with newer technology. Reversing does not necessarily need to include cracking and is more of a way to figure out what is going on with software or hardware. Some cases may be to register something illegally (pirating), disable DRM, or modification of software. What exactly is the difference between cracking, reversing, patching, and keygenning?Ĭracking is the art of modifying or altering software usually in a way that benefits the person using the application. Lena's tutorials - Assumes a basic understanding of assembly Introductory Intel x86: Architecture, Assembly, Applications, & Alliteration Reversing: Secrets of Reverse Engineering You might be able to follow most tutorials, but without a deeper understanding of what's going on, you're only going to be cracking simple applications.įor a deeper understanding of assembly and reversing I highly recommend: This all depends how deep you would like your understanding of reversing to go. Most tutorials will be in Windows, but I'll try to throw some Linux GDB for good measure. Please feel free to reach out to me on my contact form if you feel that I need more detail for a specific tutorial or stated something incorrectly. You didn't explain X in one of your tutorials OR you explained X wrong. The best crackers will use multiple tools depending on what they're trying to achieve. There's never a single tool to do the job. This is similar to most anything in life. I heard that X cracking group uses a specific program. I don't do much kernel debugging, so I don't really use Windbg although it's a powerful tool. It all depends on the application I'm reversing and type of binary it is. Net applications, Ghidra GDB for Linux CFF Explorer, Lord PE, PEBrowse32/64 for PE Editors ResHacker, Hex Workshop, 010 Editor for hex and text editing. Any video without dialog but with loud, annoying trance music shouldn't be worth your time.Ī combo of x32dbg/圆4dbg, Ollydbg, Immunity Debugger, IDA for Windows dnSpy, dotPeek. They're using click bait titles to get you to watch. Those videos only implement string checks (which is my first tutorial). I saw a tutorial online that said "crack any software." How come you're not showing that? Afterwards some brief descriptions of things we're going to see within the debugger. I'm hoping to start slow with some intro tutorials, then work my way up to showing you how to crack current applications (or at least mimic the protections used).įirst, let's answer some questions about assembly, cracking, and reversing. Have you ever wanted to crack a program? Have you ever pirated an application that contained a crack with it? Ever wondered what happens when an application is run? If you're reading this, the answer to one of those is probably yes.
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