Need Help With Cracking Netpeeker

[DarkCyber]

I am trying to crack netpeeker, but when I run it in w32dasm I get some strange code, no jumps and stuff like that.

I unpacked it with UPX 1.7.

Netpeeker 3.10
Peid:
UPX 1.0
Microsoft Visual C++ 6.0

Mabe there is a similar tutorial to crack netpeeker

Sorry for my sloppy english

If run netpeeker in olly and is a maze of calls, I let this one drop for some time.

[hvc]

Last time i checked that program (over a year ago), the core of the protection was in the device driver (protection was MD5 based).
You don't need to patch the main executable.
To succeed in breaking the protection, you need to create a fake licence file (the related code is inside the program's main executable), locate the related driver inside your "system32" directory, disassemble it, find the licence verification function (hint: use PeiD's kanal plugin to locate the MD5 functions and find references to them, one reference is made by the function you are interested in), and then you can decide if you 'll patch the verification function to return true, or work on an alternative. ;)

If you decide to patch the driver, do not forget to update the PE header checksum, otherwise the windows loader will refuce to load it.

That's more than enough information to get you started...

Good luck!

PS: DarkCyber, or moderators / admins, i don't know about the forum politics on subjects such as this one, but it would be a good idea to remove the name of the application...