Help in RE self-modifying dll

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May 17th, 2006, 07:51 PM
mandelbort

Help in RE self-modifying dll

Hi, i'm trying to RE a dll to crack it's protection, i've found the serial check routine after a getDlgItemTextA, patching is very simple (with a forced jmp), but the dll is selfmodifying and patching results in a corrupt one..
Instead trying to found a valid code seems to be too complex for my skills.. :(
Anyone can help?
Thanks
May 17th, 2006, 07:59 PM
morganlefay

Quote:

RE a dll to crack it's protection

Sorry...I cant help you....

But could you explain what RE is for me....

And why you are trying to crack a dll protection???

Why would you do that???

Thanks......

MLF

RE=Reverse Engineer???

Its not a MS dll now is it?????
May 17th, 2006, 08:03 PM
mandelbort

Because it's a challenge; the dll is an application component.
May 17th, 2006, 08:08 PM
morganlefay

Is it "protected" for some reason???

Are you violating some EULA by reverse engineering it.........or you have explicit permission ???

Just curious ;)

MLF
May 17th, 2006, 08:08 PM
mandelbort

[QUOTE][i] Originally posted [url="http://www.AntiOnline.com/showthread.php?

RE=Reverse Engineer???
[/QUOTE]
yes

Quote:

Its not a MS dll now is it?????

not
May 17th, 2006, 08:12 PM
morganlefay

Is this like a school project??

Just wondering....cause this type of activity could be used maliciously......you know

MLF
May 17th, 2006, 08:16 PM
mandelbort

Quote:

[B]Is this like a school project??

yes..
May 17th, 2006, 08:18 PM
morganlefay

Wow

Look at this....

There is a WHOLE bunch of stuff on google about this stuff???

http://www.google.ca/search?hl=en&ne...neer+dll&meta=

What application???

MLF
May 17th, 2006, 08:22 PM
ech0

this is the nicest fight ive ever seen! ;)
May 17th, 2006, 08:27 PM
morganlefay

Easier to catch flies with honey then with vinegar ;)

MLF
May 17th, 2006, 08:58 PM
thehorse13

Quote:

Because it's a challenge; the dll is an application component.

Interesting. If you're looking to challenge yourself, why are you asking for help? Wouldn't asking for help indicate defeat?

--TH13
May 17th, 2006, 09:20 PM
gore

Quote:

Originally posted here by morganlefay
Easier to catch flies with honey then with vinegar ;)

MLF

And it's even easier to smack them with a fly swatter.
May 17th, 2006, 09:29 PM
morganlefay

Quote:

And it's even easier to smack them with a fly swatter.

But then you leave fly guts everywhere.......yuk

MLF
May 17th, 2006, 11:28 PM
Tiger Shark

Quote:

Easier to catch flies with honey then with vinegar

Are you telling me that the wide open vinegarpot I put out there on the net isn't catching anything because I should have used honey????? :confused:
May 18th, 2006, 12:09 AM
Noia

I'm pretty sure the dll isn't self modifying, I think you are having a problem with dynamic linking orders, something that causes your jump to jump to the wrong place, your better off just gutting the whole routine.