Add README

walkthrough/basic-buffer-overflow/README.md

@@ -0,0 +1,27 @@
+# Basic Buffer Overflow
+
+This directory is the most basic, classic, stack-based buffer overflow.
+
+The stack is executable, and the binary is not randomized.
+
+A few things are demonstrated in this example:
+
+- `process` tube
+- `gdb.attach` for debugging processes
+- `ELF` for searching for assembly instructions
+- `cyclic` and `cyclic_find` for calculating offsets
+- `pack` for packing integers into byte strings
+- `asm` for assembling shellcode
+- `shellcraft` for providing a shellcode library
+- `tube.interactive` for enjoying your shell
+
+Feel free to modify the example, and try some other shellcode snippet!
+
+You can easily list the available shellcode from the command-line:
+
+```
+$ shellcraft | grep i386
+...
+i386.linux.execve
+...
+```