Added the advanced exercises (section 14)

Author: nnamon

lessons/14_advanced_exercises/lessonplan.md

@@ -1 +1,51 @@
 # Advanced Exercises
+
+You're completely on your own for this section! These exercises come from the
+challenges I wrote for Gryphon CTF, a capture the flag competition run by the
+students at Singapore Polytechnic for their peers.
+
+## Exercise 14.1: Drag Race
+
+```
+This bad binary is all T. All Shade.
+
+nc localhost 1345
+```
+
+The binary can be found [here][1]. Try to do it without access to the source
+code but if you need it, it can be found [here][2].
+
+## Exercise 14.2: Black Beauty
+
+```
+With a bestselling book under her belt and over fifty million copies sold, Anna
+Sewell has decided to go into the stock market. Please help her figure out her
+stock market ticker.
+
+nc localhost 1350
+```
+
+[Binary][3].
+
+[Source code][4], if you need it.
+
+## Exercise 14.3: Mystery Jukebox
+
+```
+Listen to some Postmodern Jukebox (https://youtu.be/NTmk0Pqk6hs) while playing
+with this Mystery Jukebox program!
+
+nc play.spgame.site 1343
+```
+
+[Binary and Libc][5].
+
+[Source code][6], if you need it.
+
+
+[1]: ./challenges/dragrace/distrib/dragrace_981dac47f4cb1881baf246df10e73536
+[2]: ./services/dragrace/dragrace.c
+[3]: ./challenges/black_beauty/distrib/blackbeauty_6b350b986168bfcf6a85fecc377552dd
+[4]: ./services/black_beauty/blackbeauty.c
+[5]: ./challenges/mystery_jukebox/distrib/jukebox_a761352ac202e55d441e7e807d89962b.tar.gz
+[6]: ./services/mystery_jukebox/jukebox.c