fix: update exe service templates to support stageless payloads

Author: dledda-r7

lib/msf/util/exe.rb

@@ -708,7 +708,31 @@ def self.to_win64pe_service(framework, code, opts = {})
     # Allow the user to specify their own service EXE template
     set_template_default(opts, "template_x64_windows_svc.exe")
     opts[:exe_type] = :service_exe
-    exe_sub_method(code,opts)
+    if code.length >= 8192
+      # Try to inject code into executable by adding a section without affecting executable behavior
+      if opts[:inject]
+        injector = Msf::Exe::SegmentInjector.new({
+         :payload  => code,
+         :template => opts[:template],
+         :arch     => :x64,
+         :secname  => opts[:secname]
+        })
+        pe = injector.generate_pe
+      else
+        # Append a new section instead
+        appender = Msf::Exe::SegmentAppender.new({
+          :payload  => code,
+          :template => opts[:template],
+          :arch     => :x64,
+          :secname	=> opts[:secname]
+        })
+        pe =  appender.generate_pe
+      end
+      
+      return pe
+    else
+      return exe_sub_method(code,opts)
+    end
   end
 
   # self.set_template_default_winpe_dll