Allow more custom settings for creating a .Net control

git-svn-id: file:///home/svn/framework3/trunk@13546 4d416f70-5f16-0410-b530-b9f4589650da

lib/msf/util/exe.rb

@@ -1090,7 +1090,7 @@ require 'digest/sha1'
 	# Creates a .NET DLL which loads data into memory
 	# at a specified location with read/execute permissions
 	#    - the data will be loaded at: base+0x2065
-	#    - max size is 0x8000 (32768)
+	#    - default max size is 0x8000 (32768)
 	def self.to_dotnetmem(base=0x12340000, data="", opts={})
 
 		# Allow the user to specify their own DLL template
@@ -1102,20 +1102,26 @@ require 'digest/sha1'
 		}
 
 		# Configure the image base
-		pe[180, 4] = [base].pack('V')
+		base_offset = opts[:base_offset] || 180
+		pe[base_offset, 4] = [base].pack('V')
 
 		# Configure the TimeDateStamp
-		pe[136, 4] = [rand(0x100000000)].pack('V')
+		timestamp_offset = opts[:timestamp_offset] || 136
+		pe[timestamp_offset, 4] = [rand(0x100000000)].pack('V')
 
 		# XXX: Unfortunately we cant make this RWX only RX
 		# Mark this segment as read-execute AND writable
 		# pe[412,4] = [0xe0000020].pack("V")
 
 		# Write the data into the .text segment
-		pe[0x1065, 0x8000] = [data].pack("a32768")
+		text_offset = opts[:text_offset] || 0x1065
+		text_max    = opts[:text_max] || 0x8000
+		pack        = opts[:pack] || 'a32768'
+		pe[text_offset, text_max] = [data].pack(pack)
 
 		# Generic a randomized UUID
-		pe[37656,16] = Rex::Text.rand_text(16)
+		uuid_offset = opts[:uuid_offset] || 37656
+		pe[uuid_offset,16] = Rex::Text.rand_text(16)
 
 		return pe
 	end