Update the content of a MatLab generated executable

I would like to update the content of an executable inside a generated executable MatLab file. The file is generated with MatLab/Simulink compiler.

Why would I want to do this? Because I need to sign the content of all executable that run on my company pc.

I know I can open the generated executable as a zip file. Inside I can update or add any file.

I have found that there is a sig1.xml file that contains the sha512 encoded with base64. So I have updated the sha512 signature of the modified file. But I have an error when opening the executable: CTF archive is invalid

Is there a global signature to update? Or anything else?

Any advice is welcome!

Answer 1

[SACHIN KHANDELWAL]

Hi @Guillaume JACQUENOT,

MATLAB executables (created using MATLAB Compiler) are essentially self-extracting archives. They contain a CTF (Component Technology File) archive that includes all the necessary files for execution. Refer the following doc : https://www.mathworks.com/help/compiler/deployable-archive.html

I recommend utilizing the 3rd party signing tool instead to modifying the executable.

https://stackoverflow.com/questions/252226/signing-a-windows-exe-file