[ask] coding for un-decompile ex4 | Forex Factory

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[ask] coding for un-decompile ex4

  • #1
  • First Post: Jan 20, 2009 8:06pm Jan 20, 2009 8:06pm
Hi, I am wondering If we can insert code/syntax that makes EA can't be decompiled so easily.

Many thanks
no Guts, no Glory!
  • #2
  • Jan 20, 2009 8:29pm Jan 20, 2009 8:29pm
I believe they do this by creating a DLL and calling that...
  • #3
  • Edited 11:04pm Jan 20, 2009 10:11pm | Edited 11:04pm
I don't think there's a solution.

Any EA can be decompiled (to my knowledge) and security removed. That throws out using server client certs and just about anything you could implement.

It is interesting that decompiled EAs are not the actual source code. They are extracted logic.... often looking nothing like the original code.
  • #4
  • Jan 20, 2009 11:45pm Jan 20, 2009 11:45pm
If anyone know and willing to help about this dll things. Because i believe there is some trick to do it.
no Guts, no Glory!
  • #5
  • Jan 21, 2009 12:08am Jan 21, 2009 12:08am
Why do you think there is a trick? To get a DLL working with your EA, you would put the code referending it in the EA.

Once decompiled, anything referring to that DLL can be removed.
  • #6
  • Jan 21, 2009 1:31am Jan 21, 2009 1:31am
Quoting tdion
Why do you think there is a trick? To get a DLL working with your EA, you would put the code referending it in the EA.

Once decompiled, anything referring to that DLL can be removed.
Why? Because everything always has pair. God-Evil, Virus-Anti Virus, Bad Guy-Good Guy, etc
no Guts, no Glory!
  • #7
  • Jan 21, 2009 2:33am Jan 21, 2009 2:33am
What is the pair for "zero?"
  • #8
  • Jan 21, 2009 2:35am Jan 21, 2009 2:35am
Quoting tdion
What is the pair for "zero?"
million $?, lol
  • #9
  • Jan 21, 2009 2:37am Jan 21, 2009 2:37am
Quoting gsosay
If anyone know and willing to help about this dll things. Because i believe there is some trick to do it.
Here is how you do it to add some security:
Leave in the EA only buy/sell/pending orders.. meaning only the execution part.

Move all the logic and analysis part to DLL. So you feed the price to the DLL and then it says, buy/sell or do nothing.

Anyway, selling black boxed systems is evil.
  • #10
  • Jan 22, 2009 5:30pm Jan 22, 2009 5:30pm
Someone told me that if you make mq4 using metatrader 4 build 220, the file ex4 can't be decompiled. is that right?
no Guts, no Glory!
  • #11
  • Jan 22, 2009 8:30pm Jan 22, 2009 8:30pm
Quoting gsosay
Someone told me that if you make mq4 using metatrader 4 build 220, the file ex4 can't be decompiled. is that right?
Doubtful. Its possible that there is a different algorithm being used in build 220. So that *might* stop the current decompilers but its only a matter of time before they get reprogrammed and be able to once again decompile ex4
  • #12
  • Jan 22, 2009 9:29pm Jan 22, 2009 9:29pm
Quoting LongToBeFree
Doubtful. Its possible that there is a different algorithm being used in build 220. So that *might* stop the current decompilers but its only a matter of time before they get reprogrammed and be able to once again decompile ex4
Actually decompiler for build 220 has been around almost immideately after the build was out. It's perfectly legal product, costs around $900. Just google it.
  • #13
  • Jan 22, 2009 10:44pm Jan 22, 2009 10:44pm
l agree that the solution is in the use of DLLs.

Make your EA as simple as possible - no logic involved, sending orders to brokers, sending price feeds to DLL, receiving instructions from DLL.

They cant decompile the DLL = safe EA.
  • #14
  • Jan 23, 2009 12:17am Jan 23, 2009 12:17am
I doubt decompiling a DLL is impossible.

The right answer is to let your clients connect to your live account with the MT4 trade copier, and duplicate trades into their accounts.

That keeps the software on your side of the table.
  • #15
  • Jan 23, 2009 4:54am Jan 23, 2009 4:54am
Quoting BurgerKing
l agree that the solution is in the use of DLLs.

Make your EA as simple as possible - no logic involved, sending orders to brokers, sending price feeds to DLL, receiving instructions from DLL.

They cant decompile the DLL = safe EA.

Have you ever heard of HDASM or WDASM?
A dll can be always decompiled!In assembler code,not in source code(but you can see some important functions...)
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  • #16
  • Jan 23, 2009 5:19am Jan 23, 2009 5:19am
Move the sell/buy logic to a .DLL and then encrypt the dll using compression software. . The .DLL then has uncompression software built into it and will do what it needs too when the .DLL is called.

They maybe able to eventually decompile it in a couple of years using a fast computer.
  • #17
  • Jan 23, 2009 8:07am Jan 23, 2009 8:07am
Quoting cybernet69
Move the sell/buy logic to a .DLL and then encrypt the dll using compression software. . The .DLL then has uncompression software built into it and will do what it needs too when the .DLL is called.

They maybe able to eventually decompile it in a couple of years using a fast computer.

http://www.forexfactory.com/images/icons/icon14.gif
  • #18
  • Jan 23, 2009 3:28pm Jan 23, 2009 3:28pm
Quoting cybernet69
Move the sell/buy logic to a .DLL and then encrypt the dll using compression software. . The .DLL then has uncompression software built into it and will do what it needs too when the .DLL is called.

They maybe able to eventually decompile it in a couple of years using a fast computer.
How does this affect performance? It would seem to me that going through the compression layer would significantly slow down an EA - is that not the case?
  • #19
  • Jan 23, 2009 3:32pm Jan 23, 2009 3:32pm
Yes, it would slow it down. How much, i dont know. The compression software nowadays is very good, so i would be thinking Milliseconds BUT someone would have to suck it and see.
  • #20
  • Jan 23, 2009 3:33pm Jan 23, 2009 3:33pm
The one i know is SHRINKER.
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