arch/x86/boot/vmlinux.bin is created when the kernel is made with the following command (Linux version 6.5): objcopy -O binary -R .note -R .comment -S arch/x86/boot/compressed/vmlinux arch/x86/boot/vmlinux.bin
arch/x86/boot/vmlinux.bin with arch/x86/boot/compressed/vmlinux.bin.