Decryption of already compiled program

Hello everyone, this may be a stupid question, but recently I lost the source-code for my project due to a fatal crash. The only thing I've got left is an slightly dated version of the already compiled exe-file. Now, is there any way, to, like "extracting" the source code back from it? So that I can continue programming on it? Ah, I fear there's not . . . :(
Thanks nevertheless.