To get the closest thing to a "full" decompilation, follow this checklist before you click upload:
Industry-standard interactive disassembler with premium Hex-Rays decompiler. Commercial / Demo libso decompiler online full
The decompiler will generate code that looks like C. It won't be a perfect 1:1 match of the original source, but it will show the logic flow. Challenges: Obfuscation and Stripping To get the closest thing to a "full"