: Tools like ExeToBat convert the entire binary file into a long Base64 string. This string is embedded into a .bat file alongside a command (often using Windows' built-in certutil ) that decodes the string back into the original .exe and runs it at runtime.
Most "converters" of this type are not true de-compilers. Instead, they function by exploiting how many BAT to EXE compilers work: Extraction Wrappers: exe to bat converter v2 work
Most "converted" EXE files are actually self-extracting wrappers. When you run the EXE, it places the original : Tools like ExeToBat convert the entire binary