There are several ways to just embed a string into a binary. These are some easy examples:
1) You can just make a string variable: extern char szMessage[] = “Insert your message here.”;
2) You can add a resource (either a string resource, or a custom binary resource) with your string.
3) You can append the string directly to the end of the binary using concatenation. [copy /b original.exe+message.txt output.exe]