Modifying startup files on platform io

STM32 cube IDE allows code generation using a GUI to select the desired configurations, is there any way in which I can use the “.c” startup files and interrupt vector table Core files provided by the STM32 cube IDE, cause in platform io the startup files are given by the “.s” extension and hence cannot modify it.

Any help on this issue will be highly appreciated.

Maybe this could help: Using STM32CubeMX and PlatformIO