Exetools

Exetools (https://forum.exetools.com/index.php)
-   General Discussion (https://forum.exetools.com/forumdisplay.php?f=2)
-   -   Packed or not? (https://forum.exetools.com/showthread.php?t=2591)

balauru 08-30-2003 21:23

Packed or not?
 
Ok, I just got an interesting software:

hxxp://www.chromix.com/ColorThink/windowsdownload.cxsa?-session=tx:8477D52A7B1C4A4C25271B6405566AA7

Protection is User name + SN. If I hexedit the main exe, I can fine strings like "Demo mode" or "SN entered is invalid". But if I load this file in IDA, I get nothing. No Demo string, no invalid SN string.

Any idea what the hell is going on?

dynio 08-30-2003 23:20

If the program doesn't have straight references to these ASCIIs You won't find them in any decompiler/disassembler. It can be a form/dialog etc.
Then You won't find anything - even if You mark these ASCIIs as a string under IDA You won't get any references. If You have readed these strings it's not packed.

balauru 08-31-2003 00:20

Actually, I think you're right. Hexview is full of TForm and TButton. It's a RealBasic program, and the main exe is importing some RealBasic plugins.

My problem is that I have no string references in wdasm/ida. Also, registration dialog have 3 buttons: Quit, Demo and Proceed. Proceed button is active only if you enter the correct sn. So, there is no way to enter a dummy sn, press Proceed, and then bpx on usual breakpoints. I try to locate this nag screen, but the program is full of call xxxxxx followed by jz/jnz/jnb xxxxxx, and you know how much this is annoying for a beginner :-(

Anyway, thx. for your kind reply.

dynio 08-31-2003 01:33

You can always stop the program during loading (e.g. GetModuleHandle/GetCommandLine/LoadLibrary etc.) then search memory for "Demo" string, next put breakpoint on read memory access (BPM) on that string, then trace-back the program to see what fragment is responsible for calling this function, etc...
Uff.... I'm only dreaming, since I don't have this app and time to crack it....

Regards.

dynio 08-31-2003 20:00

I think I had a dream.....
A very deep dream.....
It was a vision of something.....
Something I can't understand.....
It was a very, very old picture.....
I think it was Pharaon saying to me.....
He said:

User name: thanks God dyn!o was borned
Serial number: CCT-d7a369-59b9d0-bc3b19-200W

What does he mean? Am I the chosen one?

changes 09-01-2003 07:58

Salutations Dynio,
You are indeed the heroic one, an icon for us all!

balauru 09-01-2003 14:52

Thanks a lot dynio, it's working fine. But my goal here is to learn something, not to use "ready made" cracks.
So, if you are so kind and have time to write for ma a little tutorial on how you did it, this will be more appreciated. If not, thank you anyway for your kindness.

dynio 09-01-2003 14:59

Ok. that was a quick one so check Your PM...

Regards.

balauru 09-01-2003 18:11

Thanks man, it was very easy to get the right code. But this hapens when you're a beginner and you don't set the right bpx :-)

Cheers

ysco 09-01-2003 23:13

balauru is there anyway that i can have the tut also i am also a newbie and want to try everything.

Thanks in advance.

If you want u can sent it to: [email protected]

ysco.

Tacman 09-02-2003 02:07

Can you send me the tut also please on pm

R@dier 09-02-2003 12:38

Hi I am interested in the tut also if it is available

R@dier

MaRKuS-DJM 09-02-2003 19:35

i think this is good stuff... could i have it too, please??

TIA
MaRKuS TH-DJM

gorge 09-03-2003 02:08

Quote:

Originally posted by dynio
Ok. that was a quick one so check Your PM...

Regards.

Please send me tut also..

Dynio you are master :D

noor 09-03-2003 21:33

Hi;
Please send it to me too. thanks


All times are GMT +8. The time now is 03:57.

Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2026, vBulletin Solutions, Inc.
Always Your Best Friend: Aaron, JMI, ahmadmansoor, ZeNiX