This project has been done here before so I will just copy paste what the other person asked for as it is excatly what I want.
"I'll need to explain what this file does first.
When trading foreign currencies which is what I do, there are a multitude of strategies to get on the winning side. Using an auto-trading style is one of them granted that the file attachment you are using is well written.
I own a file that is copy-written and it needs some fine tuning. The person who wrote it won't change anything in it but it is still successful.
These files are all written in MQL4 (metaquote language 4) MQL4.com. Now, one can write a file and place it in a public forum such as [url removed, login to view] for all to test with their broker platform which is called MT4 (metatrader 4). You open a demo account with any broker that supports MT4, like FXDD, Spencer financial or FXLQ. You then download the file from the forums to the 'experts' folder under the broker in your 'program files' and then open your broker platform and there the file will be in the 'navigation' window of your broker's MT4 trade platform. You then open a currency chart such as euro/usd then drag the file over to the chart and either run the file (Expert Advisor) with the default settings from the code or you can change the 'input' settings to suit your style of trading. Then you simply turn on the 'expert advisor' button at the top of the trade platform and watch this dude auto-trade for you. Now, those files that are pulled off the forum are in .MT4 but when one thinks they have written one that is successful enough, they compile it in .ex4 and us common folk can't read the written code. So, what I need is for you or someone to get this file open. When you open it, it will be in Meta Editor. When you open these unsecured files (MT4) say if you save it to 'desktop' then the icon will be an amber vertical diamond shape with an exclamation point '!' in the middle of it. When you open it, it is opened by a Meta Editor file and then you can read all the code.
The mq4 language is very similar to C language and any experienced C/C++ or java programmers should be at ease with the language.
The program should take any ex4 file and convert it back into mq4 format.
I would like the decompiler to come with its source code.
As a test for a successful project, I will supply a sample file for decompilation.
More about the Mq4 language, the compiler and metatrader can be found at [url removed, login to view]
Please contact me asap if you require any more info.