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MT4 600+ compile and decompile

  • #1
  • First Post: Apr 23, 2017 9:43am Apr 23, 2017 9:43am
There are a lot of coders with experience on FF, and I would like to know there opinions regarding MT4 compile default service after build 600+

How safe is sharing .ex4 with someone assuming you never want that person to have that file source. I know after build 600+ MetaQuotes use a different algorithm for compiling and is more hard to have them decode , but how really hard is for for brokers or VPS providers for example ? In case I am uploading my EX4 file to VPS how safe is it ? For more security let's say you can add a private .dll library, but even that can decompile. Also I am not talking about a reverse engineering on the code since that will involve multiple resources and it will never be 100% accurate, I am talking about a direct backdoor in the compile system that will allow someone to decompile the code direct. Anyone heard or saw that this would be possible ? Not in theory but practical since in theory we all know is possible.

Beside expiration date of the software, licence system, no global variable and .dll external library any other security measurement can take by the developer?

Thank you,
By failing to prepare, you are preparing to fail.
  • #2
  • Apr 23, 2017 11:13am Apr 23, 2017 11:13am
Quoting project13et
There are a lot of coders with experience on FF, and I would like to know there opinions regarding MT4 compile default service after build 600+ How safe is sharing .ex4 with someone assuming you never want that person to have that file source. I know after build 600+ MetaQuotes use a different algorithm for compiling and is more hard to have them decode , but how really hard is for for brokers or VPS providers for example ? In case I am uploading my EX4 file to VPS how safe is it ? For more security let's say you can add a private .dll library,...
Builds below 940 were broken. Then at this moment it's not sure protection is safe. But for almost all of people it's impossible crack it. The best way is have your own server at home
Try don't lose pants never...
  • #3
  • Apr 23, 2017 11:19am Apr 23, 2017 11:19am
Quoting braintheboss
{quote} Builds below 940 were broken. Then at this moment it's not sure protection is safe. But for almost all of people it's impossible crack it. The best way is have your own server at home
Unfortunately my current servers at home with the best connection possible is having bigger trade execution latency then server in Equinix NY4.
By failing to prepare, you are preparing to fail.
  • #4
  • Apr 23, 2017 11:37am Apr 23, 2017 11:37am
Quoting project13et
{quote} Unfortunately my current servers at home with the best connection possible is having bigger trade execution latency then server in Equinix NY4.
Then you never can have guarantees any ex4 cant be decompile in a future. MT is knowed for create crap software. I don't think their protection is different
Try don't lose pants never...
  • #5
  • Apr 23, 2017 11:44am Apr 23, 2017 11:44am
Quoting project13et
There are a lot of coders with experience on FF, and I would like to know there opinions regarding MT4 compile default service after build 600+ How safe is sharing .ex4 with someone assuming you never want that person to have that file source. I know after build 600+ MetaQuotes use a different algorithm for compiling and is more hard to have them decode , but how really hard is for for brokers or VPS providers for example ? In case I am uploading my EX4 file to VPS how safe is it ? For more security let's say you can add a private .dll library,...
I've been wondering about the same thing. Realistically though, I can't see how the VPS could easily monitor which alogrithms work and which don't, since they don't have access to view your trade account. They would need to maliciously hack in to see your transaction history in order to determine whether or not your algorithm is worth anything at all (remember that most traders are losing money anyway...) Otherwise, they would have to decompile every algo they have and test them, which is a quite a lot of work. Also, actually making decompiled code useful is difficult, since everything gets given default variable names and the coding structure is reverted to a very simple form. So it would be tough to reverse engineer your algorithm and sell it again. But as you said, not impossible.

Lastly, assuming they've done all this, the odds of them trading in large enough volumes with your algo to actually affect the outcome of your trades is extremely small. In a $4 trillion a day market, this would need to be someone from Deutsch Bank stealing your code to make it unprofitable for you (unless perhaps you are scalping and trading very very short timeframes?).

Anyway, I would like to hear from some traders with more experience about this. I'm not new to programming or trading, but I am new to the world of algorithmic trading. I will do some digging on the internet and see what I can find
Better to run, than curse the road
  • #6
  • Apr 23, 2017 12:49pm Apr 23, 2017 12:49pm
Quoting steve2010
{quote} I've been wondering about the same thing. Realistically though, I can't see how the VPS could easily monitor which alogrithms work and which don't, since they don't have access to view your trade account. They would need to maliciously hack in to see your transaction history in order to determine whether or not your algorithm is worth anything at all (remember that most traders are losing money anyway...) Otherwise, they would have to decompile every algo they have and test them, which is a quite a lot of work. Also, actually making decompiled...
Of course the VPS provider don't stay to monitor all signals, but the brokers does for there own protection. Also the broker does have you're trade log and IP of trading execution. So he can know very easy what VPS you use and request EA from VPS provider. Beside that, we assume there is no backdoor in MT4 that allow EX4 files to be extracted direct from MT4 protocol. (Paranoia scenario)

I don't want this to be understand wrong, I am not saying brokers or VPS providers are necessary bad, this discussion is pure technical, assuming the worst can happen , and what will be the best protection.
By failing to prepare, you are preparing to fail.
  • #7
  • Apr 24, 2017 6:41am Apr 24, 2017 6:41am
Quoting braintheboss
{quote} Builds below 940 were broken. Then at this moment it's not sure protection is safe. But for almost all of people it's impossible crack it. The best way is have your own server at home
Where did you get that information? Any proof? Until know i only have seen scamartists try to sell their worthless stuff with it. If so then we will see a significant drop of sharings here. On one side no bad thing at all but very bad for all shared stuff so far as we know 99.9% of the users here doesn't care about IP.
  • #8
  • Apr 24, 2017 7:46am Apr 24, 2017 7:46am
Quoting JensItzig
{quote} Where did you get that information? Any proof? Until know i only have seen scamartists try to sell their worthless stuff with it. If so then we will see a significant drop of sharings here. On one side no bad thing at all but very bad for all shared stuff so far as we know 99.9% of the users here doesn't care about IP.
I readed it at MQL5 web. I remember some EAs were cracked at store and MT invalidate all builds below 940 ( this its at forum as new build news )
Try don't lose pants never...
  • #9
  • Apr 24, 2017 3:00pm Apr 24, 2017 3:00pm
Get a Virtual machine from Microsoft Azure ( Windows Server 2016) or Amazon AWS ( Windows Server 2016) and install MT4/MT5. No one will have access to your EA, unless they can break in the Virtual machine.
  • #10
  • Apr 24, 2017 3:40pm Apr 24, 2017 3:40pm
Quoting braintheboss
{quote} I readed it at MQL5 web. I remember some EAs were cracked at store and MT invalidate all builds below 940 ( this its at forum as new build news )
Thank you for the info. Will search for this article, that are very bad news for all developers here. So from now on the best way is to separate all logic from the MT4 stuff and calculate it on own servers.
  • #11
  • Apr 24, 2017 3:44pm Apr 24, 2017 3:44pm
Quoting JensItzig
{quote} Thank you for the info. Will search for this article, that are very bad news for all developers here. So from now on the best way is to separate all logic from the MT4 stuff and calculate it on own servers.
I think protection didnt be broken really. Looks like man in the middlle attack inside terminal if they only banned some builds without have recompile EAs at store
Try don't lose pants never...
  • #12
  • Mar 19, 2020 3:32pm Mar 19, 2020 3:32pm
Hello Hello I have this great EA more accurate to decompile the expired license and it is in .ex4 great results can help all EA sites and very good there is someone who can do this by opening his source code.
Attached File(s)
File Type: ex4 EA Smook.ex4   126 KB | 838 downloads
  • #13
  • Last Post: Mar 9, 2023 5:38pm Mar 9, 2023 5:38pm
Can anbody
Attached File(s)
File Type: ex4 BO-W.ex4   58 KB | 555 downloads
decompile the attached to mq4?
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