Add dbg_dump_to_raw.py

README.md

@@ -21,3 +21,7 @@ Similarly, debug commands may be passed as command-line arguments to `synacor.py
 For example, to load the `dumps/init` state to skip the self-test and decryption, run:
 
     ./synacor.py dbg_load dumps/init
+
+Dump files are stored in Python [pickle](https://docs.python.org/3/library/pickle.html) format, so if you want to inspect the memory in a hex editor, for example, it will be necessary to extract a raw memory dump:
+
+    ./tools/dump_to_raw.py dumps/init dumps/init.raw

tools/dump_to_raw.py

@@ -0,0 +1,31 @@
+#!/usr/bin/env python3
+#    synacor.py - An implementation of the Synacor Challenge
+#    Copyright © 2016  RunasSudo
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU Affero General Public License as published by
+#    the Free Software Foundation, either version 3 of the License, or
+#    (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU Affero General Public License for more details.
+#
+#    You should have received a copy of the GNU Affero General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+import pickle
+import struct
+import sys
+
+if len(sys.argv) < 3:
+	print('Usage: {} <input> <output>'.format(sys.argv[0]))
+else:
+	with open(sys.argv[1], 'rb') as f:
+		model = pickle.load(f)
+	
+	SYN_MEM = model['SYN_MEM']
+	
+	with open(sys.argv[2], 'wb') as f:
+		f.write(struct.pack('<32768H', *SYN_MEM))