Adding code to .exe file

Some Guy Named Dave · **Joined:** 24 Oct 2007 00:44 **Posts:** 26

Is it possible to add code after the end of the .exe file?

omegga · **Joined:** 27 Jun 2008 10:22 **Posts:** 8

You have to add a new code section to the file. Read the tutorial about the PE executable format on http://arteam.accessroot.com or simply use Lord PE.

djeZo · **Joined:** 22 Dec 2007 15:57 **Posts:** 10

or you can resize .text section and put code there. if your code is very small, it can work without even resizing .text section :p

if you add code to .text section, its very hard for AVs to detect malware changes on PE file. if you add new section, AVs would most likely pick it up.

aluigi · **Posted:** 17 Sep 2008 21:11

and another interesting thing in case of small modifications (for example mini bugfixes) is optimizing the size of the pre-existent instructions for gaining the needed space for placing the own one... it's also very funny to do and often gives also speed improvements

quandary · **Joined:** 01 May 2009 00:43 **Posts:** 4

Some Guy Named Dave wrote:

Is it possible to add code after the end of the .exe file?

Yes, you can add your data right at EOF.
See my C++ tutorial at www.aimbots.net.
http://aimbots.net/tutorials/7662-addin ... table.html

The original delphi code is from codegear, but I converted it to C++.

Luigi Auriemma

Adding code to .exe file