Best way to add a large block of data into a file to patch it?

[sope]

What i used to do with hasp4 encryption & decryption was i used to create several numbered decrypted file & then used to hook up an routines, next load decrypted files with exact number of bytes to load at that particular memory location. Was an tedious process.

In short you need to write code to hook up the process & load your patched data & write it on memory address to patch.

Cheers Sope