Famous Last Words: You can't decompile a C++ program

The Great Jack Schitt writes "I've always heard that you couldn't decompile a program written with C++. This article describes how to do it. It's a bit lengthy and it doesn't seem like the author usually writes in English, but it might just work (haven't tried it, but will when I have time)."

Comments

Re:hmm

[jackb_guppy]

I wrote reverse compilers on IBM midrange equipment. where there are not stacks and self modifing code is VERY commom place. It is easy to do:

Create a program that preforms / understands the opcodes for the processor and addressing. And it follows both sides of a branch.

Now "run" the program, that maps out the all opcode and data areas.

Once done. Look at that Assemmebler equivatlent, map out commom subroutines and function calls. Data Storage become very clear. Lastly, commom storage with show external and internal common structures - so naming of fields and visualable.

It is striaght forward, can be time comsuming - and very helpful is understnad hinden or loss information.

From the author

[opcodevoid]

I didn't relize my artical was getting any feedback because people are posting it here instead of pscode.

Anyway i seen alot of people saying decompiling is impossible or at least not practical, well that is not true. Decompiling c++ is very practical because of high level keywords(if,while,for) ,local variables, and parameters. All of these generate certain instruction similer on every platform and just about every proccesser.

I also extending the artical to contain 92 pages in total which will cover OOP, and crt, and a whole bunch of other stuff