Monday, May 09 2005 @ 06:26 PM CEST Contributed by: warezhog Views: 24302
Level : newbie
Serial fishing using Ollydbg. (For absolute newbies only)
Well, this whole crackme should take you about one minute to crack.
I used two programs:
I remeber doing this crackme a while ago when I first started screwing around with debuggers and such. I think it was harder for me then, but who knows.
Well, download the vault.exe here and save it to your desktop (that is where I usually work on files because of its ease of location). Then make a backup in another folder (always make a backup).
Drag the exe file into PEiD to see if there is any sort of protection... Nope, it is pure Assembly so we are good to go.
Right click on the vault.exe file and select open with OllyDbg (if you don't have this option, then open OllyDbg and go to Options->Add to Explorer)
This will open the exe in the program. Hit F9 to run the program (you may need to Alt+Tab to pull the program to the front after it is run), it will ask you for the name and the key. Enter anything in there and you will see it says: "No Access!"
Well, that is no good. Go ahead and close the exe and hit Alt+F2, this will reload the program. Now go to the CPU menu in OllyDbg (that is the big one with the Blue C in the upper left hand corner of it) and right click anywhere and go to: Search for-> All referenced text strings.
That should pop up a window that shows about 6 strings total. The first two seem interesting:
Hmmm... that seems odd. The first one looks like a name and the second one looks like a key.
Let's copy those down on a piece of paper or copy and paste them into a notepad file. Then hit F9 to run the program again, put: Robin Banks in the name area and: 8dS#9d2?@$ in the key area. What do you know?!! It Worked!!
I know that this is about as easy as we can get, but hey, you gotta start somewhere. There is an even easier way to get the serial and name, but I will save that one for my next tutorial on an actual generated serial.