[exelist] Re: protection on PKZIP?

["Digital Matrix" <digitalmatrix@...>]

Hi Edd,

The text is there, PK just added another routine to (at runtime) show the
text on your screen.
The file zip2exe.exe unpacked with UNP4.11 is ok.
In your case, to keep it simple, get a debugger, load the unpacked
zip2exe.exe file and debug the proggie.
You'll find the rotine wich "decrypts" the code to normal text.

Cya,
digital matrix

-----Original Message-----
From: Edd Hawk <quarsicon@...>
To: exelist@... <exelist@...>
Date: Friday, April 23, 1999 10:07 PM
Subject: [exelist] protection on PKZIP?


>  Hi everybody in EXELIST,
>     I've tried to unpack ZIP2EXE.EXE from PKZIP 2.04g package using
>UNP v4.11. The unpacked executable run normally, but I can't find any
>text
>messages inside it (while it should be there) and it's incompressible.
>Is it
>some kind of protection from PKWare (invert/encrypt the literals)
>before
>compress it with PKLITE? Or UNP v4.11 doesn't work correctly?
>     I also tried to unpack PKLITE 2.01 (NE support) but after the
>unpacked
>executable is executed its size changed to 65536 byte of garbage and it
>can't be run for the second time.
>     If somebody understands this phenomenon :) please tell me.
>     Thank you.
>
>Regards,
>Eddy S. Hawk
>
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