This has been superseded by a better tool Py2Exe Binary Editor available at:
https://sourceforge.net/projects/p2ebe/
Py2ExeDumper is a tool to extract a py2exe generated executable file.
This tool is helpful when the exe is made in "onefile" mode. It extracts the embedded python script and the library.zip
Pyinstaller exe rebuilder is a tool to recompile/reverse engineer pyinstaller generated executables without having access to the source code.
Python version 2.5, 2.6 and 2.7 are supported.
(Note : pyinstaller itself supports python 2.4 to 2.7)
Within the software you will find detailed help including a video about how to use the tool.