A simple C implementation to decoded your shellcode and writes it directly to memory, You can use this code to perform process injection.
You need to encode your shellcode first, the file xor-encoder.py is a very simple example of how you can encode your shellcode using XOR.
Then you need to copy the output of xor-encoder.py and paste it into shellcode array in the file decoder.c.
To compile the code from Linux you can use Mingw64 Like the following:
x86_64-w64-mingw32-gcc decoder.c -o decoder.exe -w
After that, you can run it in the target machine and pass the PID like the following:
C:\Users\askar\Desktop>decoder.exe 3796
And after we run it, we will get the following nice beacon:
