So anyone who thinks its alright to decompile software needs to take a good long hard look at their moral compass. So at best if it is not illegal then it is definitely immoral. This is the reason that many coders on Forums no longer post the source code mq4 so at least it makes it harder for those so inclined and thankfully the new MT4 appears at this stage to be very hard to crack. I can think of several examples of free software coded on Forums ( that have been cracked and passwords removed etc ) that are currently for sale for thousands of dollars by unscrupulous Forex/Binary websites. No thought goes into the huge amount of skill experience and time that goes into programming the indicators/ea's/scripts etc it all comes down to making a quick dollar out of someone else's hard work and knowledge.

As far as I know, because the EX4 files are compressed with a special algorithm developed by MetaQuote, so any reverse engineering for the decompilation is almost impossible to succeed.

There are a few coders on this forum who make design and code trading tools to sell and I have seen many examples of people who find nothing wrong in cracking the ex4 ( you only have to go onto eBay to see many examples of this ) and next thing you know that piece of software is for sell on some obscure website. Decompiling a file means to break open the compiled source code to view the contents. I works in freelancer is there is not illegal also there are much more this kind of process are on going (this my job too) Can you please share what's illegal about this thing!! can anybody share if its illegal process

Decompile ex4 to mq4 free