How secure is VB6 apps? Any way for someone to decode your app?

[mark01]

Just wondering if someone could decode your VB6 app, and find the source code to it...

thanks

 

[ArtieChoke]

Not for VB 6. There is no source code in the exe file.

"I think we're all Bozos on this bus!" - Firesign Theatre

 

[chiph]

It would be very very difficult -- on the order of reverse-engineering a C++ program (one of the compilation steps that VB6 does is to call C2.exe, part of the C compiler)

Chip H.


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[VBrit]

You can read every string being set to text and every constant in VB6, so you should never store passwords, db connections etc. in your source code.

To a skilled C++ programmer, they can fairly easily hack VBRUN.DLL to show what your code is doing, but not get the actual source.

 

[chiph]

Strings are stored in plain view in C/C++ programs too. Use a hex editor on one of the DLLs in System32 sometime -- some good stuff in there.

Chip H.


____________________________________________________________________
If you want to get the best response to a question, please read FAQ222-2244 first