03.17.05
VB6 Self-Modifying Code
VB6 Self-Modifying Code by SneakCharm
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Resources : www.google.com
: brain
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Self-Modifying code is a nice way to confuse and toy with crackers.
I enjoy doing it very much so, so I will present the theory behind it and
a working prototype!
The visual basic 6 language does not allow the use of inline assembler.
Thus, we must look elsewhere and a class module (COM) answers
our call.
The typical every day class module consists of a virtual table.
This table contains pointers to every method in our class. In theory, we
should be able to allocate a block of memory, move machine code there,
and rewrite the virtual table to point to the allocated memory.
This solves the problem of inline assembler, and then to self-modifying
code? All we have to do is rewrite the block of memory!
The real trick is mixing this with pcode compilation.
It’s a deadly mix of protection 
SneakCharm
March 17, 2005
C0113c70r said,
March 12, 2007 at 12:12 am
Nice article, but where’s the file? Your link is dead.
Just me said,
July 2, 2008 at 5:45 pm
Sounds nice but the link is dead. can you post the source?