MetaTrader 4 compiles MQ4 source code → EX4 bytecode (proprietary, obfuscated, platform-specific). A decompiler attempts to reverse this: EX4 → approximate MQ4 source .
int start() double tmp_1 = Close[0]; double tmp_2 = Open[0]; double tmp_3 = tmp_1 - tmp_2; int tmp_4 = 0; if (tmp_3 > 0) tmp_4 = 1; else tmp_4 = 2; // ... hundreds of similar lines
| Approach | Feasibility | Effort | |----------|-------------|--------| | | High | Low | | Rewrite from scratch | High (you know logic) | Medium-High | | Use a disassembler (not decompiler) – e.g., ex4_dump to see function calls and constants | Medium | High (requires asm knowledge) | | Dynamic analysis – run in MT4 debugger, trace inputs/outputs | Low | Very High | | Wait for AI decompilation – future LLMs might help, but currently fail on proprietary bytecode | Experimental | N/A | 8. Conclusion – GitHub review summary | Aspect | Verdict | |--------|---------| | Working modern decompiler | ❌ None on GitHub | | Old EX4 (pre-509) recovery | ⚠️ Partial, low-quality code | | Malware prevalence | ⚠️ High – avoid binaries | | Legal safety | ❌ Illegal in most cases | | Practical usefulness | ⭐ (1/5) – waste of time |
Do not trust GitHub EX4→MQ4 tools for any serious work. If you see a repo claiming full recovery for modern EX4, it is almost certainly a scam or a virus. For lost source code, treat it as a lesson in version control (Git + backups). If you must recover logic, manually reverse-engineer the EX4 using a disassembler and rewrite clean MQ4 – but expect 20–100 hours of work per 1000 lines of original code.
MetaTrader 4 compiles MQ4 source code → EX4 bytecode (proprietary, obfuscated, platform-specific). A decompiler attempts to reverse this: EX4 → approximate MQ4 source .
int start() double tmp_1 = Close[0]; double tmp_2 = Open[0]; double tmp_3 = tmp_1 - tmp_2; int tmp_4 = 0; if (tmp_3 > 0) tmp_4 = 1; else tmp_4 = 2; // ... hundreds of similar lines ex4 to mq4 decompiler github
| Approach | Feasibility | Effort | |----------|-------------|--------| | | High | Low | | Rewrite from scratch | High (you know logic) | Medium-High | | Use a disassembler (not decompiler) – e.g., ex4_dump to see function calls and constants | Medium | High (requires asm knowledge) | | Dynamic analysis – run in MT4 debugger, trace inputs/outputs | Low | Very High | | Wait for AI decompilation – future LLMs might help, but currently fail on proprietary bytecode | Experimental | N/A | 8. Conclusion – GitHub review summary | Aspect | Verdict | |--------|---------| | Working modern decompiler | ❌ None on GitHub | | Old EX4 (pre-509) recovery | ⚠️ Partial, low-quality code | | Malware prevalence | ⚠️ High – avoid binaries | | Legal safety | ❌ Illegal in most cases | | Practical usefulness | ⭐ (1/5) – waste of time | MetaTrader 4 compiles MQ4 source code → EX4
Do not trust GitHub EX4→MQ4 tools for any serious work. If you see a repo claiming full recovery for modern EX4, it is almost certainly a scam or a virus. For lost source code, treat it as a lesson in version control (Git + backups). If you must recover logic, manually reverse-engineer the EX4 using a disassembler and rewrite clean MQ4 – but expect 20–100 hours of work per 1000 lines of original code. hundreds of similar lines | Approach | Feasibility
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