Hello,

I'm trying to debug a program, but I've run into an instruction which causes Ollydbg to stop debugging ??

Ollydbg loads the program fine, I press F9 to start the debug. All is fine, the program begins and pops up a registration message box. Ollydbg CPU monitor window is on the following instruction;

CALL <JMP.&MSVBVM60.#100>

I then enter a username and serial number in the application program, before pressing "Ok" I setup a point.h breakpoint. The program then tells me the registration is not correct, but Ollydbg never debugged anything in between selecting "Ok" and seeing the incorrect reg message.

Does anyone have any suggestions ?? I've read a lot of tutorials on this but nothing has worked ??

Your debugging a visual basic program, and so Ollydbg isn't the right tool for the job. What you want is something like BoundsChecker and the like. VB apps can not really be disassembled to anything meaningful, unlike a C, C++ or Delphi application.

Smartcheck is the favorite choice for vb apps

you must break on vb api like vbastrcmp etc

www.bugsgroup.com ("http://www.bugsgroup.com") it's have a tutorial that point on this ploblem.

mmmhhh, more than debugging this app you are probably just trying to crack it, I'd say ....

jimmyboy

Nahhh, he wrote the app himself, why would he want to crack his own app?

well my friend, the guy is saying he fails registering the application ....
you mean that he is so dumb that he can't register his own application????
Gee, I didn't consider that ...

jimmyboy

Yup, that's right. Due to a bug in his registration routines, he can't get the application registered, so needs to debug it to find out why the application is rejecting his (perfectly valid) registration code.

mmmhhh, the guy must be a whiz

jimmyboy

Hi guys,

You guys are absolutely correct. I'm trying to protect my own hard work and am trying to make it my shareware program 100% uncrackable. I'm trying to mask the way that crackers can easily find the reg code. Thanks for all your help, I've just rendered Smartcheck useless !! Hee Hee. I will be posting my routine on a popular programmers forum for all to use as well. Thanks again.

Regards, the whiz.

My friend we did not mean to offend you ... it's just that I personally like things to be called with their name .... not debugging, cracking .... it's as simple as that ..

jimmyboy

All program are crackable.Do not waste your time to protect it.
Just release as a freeware if you want it to be non crackable

the whiz,
come on over to bugsgroup and post the name of the app, maybe we can help each other, reversers are not the enemy, most of us on it for challenge not to release cracks.

Hi guys,

Here is the files location. Let me know how you can crack it.

http://www.iclub.com/registration.asp?download=ClassicSetup.exe
("http://www.iclub.com/registration.asp?download=ClassicSetup.exe
")

You will need to register an email address, then it will allow you to download the proggie.

I love the challenge as well.

can not download,can i download on simtel.com or download.com

?

tbd members.

I got it downloaded, just enter a fake name, address and the other info. Once entered it will automatically start the download. Interesting challenge !!

simon

I didn't think you guys would have any luck cracking my program with Ollydbg !! Hee Hee ... pretty nice routine isn't it !!

already cracked, thanks to ollydbg.

I've been playing with this proggie for a few days now, can't figure it out ?? Anyone have a tut ?

simon