جلسه اول پایتون برای هکر های قانونی دوره مقدماتی پاییز ۹۲

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در این جلسه از کلاس در خصوص تاریخچه پایتون و زبان پایتون صحبت شد
PySec101 Fall 2013 J1E1 By Mohammad Reza Kamalifard
Talk about : Python History and Python language Essentials.

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جلسه اول پایتون برای هکر های قانونی دوره مقدماتی پاییز ۹۲

  1. 1. Python for ethical hackers Mohammad reza Kamalifard kamalifard@datasec.ir
  2. 2. Python language essentials Module 1: Introduction to Python and Setting up an Environment for Programing
  3. 3. Python a short History • Created in 1989 by Huido Van Rossum (now he works for • • • • • Google in App Engine) Python 2.x in 2000 Python 3.x in 2008 Python 3 is not backward compatible 2.x is the status quo 3.x future
  4. 4. Why Python ? • Python is an easy to learn • Powerful • efficient high-level data structures • write complex operations in fewer statements than in C, C++ or • • • • • • • Java.  Object-oriented programming is a lot easier than in languages like Java. Clean syntax and code readability Python programs are portable Open Source Cross-platform Rich set of libraries Large Number of open source tools
  5. 5. Cross-platform • Unix/ Linux • Mac OS X • Windows • Mobile Platforms – Android, IOS • Embedded Systems
  6. 6. Major Implementations • Cpython – reference implementation “Python” • PyPy • Jython – Python implementation in Java • IronPython – Python implementation in C#
  7. 7. Why Python in InfoSec? • Rapid prototyping – POC ( proof on concept ) • Extensive library support • Tons of tools already written • If you want to write POC very fast actually you need language which is High level allows you to concentrate more on business of the application rather than having to worry about integrity details.
  8. 8. Python On different OS • Linux : – Pre-Loaded • Windows: – – Download python 2.7.5 from http://python.org/getit Or Download and install Activestate Python http://www.activestate.com/activepython • Mac OS : – Pre-Loaded
  9. 9. Python 2.7 or 3.X ? • Python 3 is not backward compatible • Most tools / Libraries still do not Support 3.x • We use python 2.7 here in this course
  10. 10. Using the Python Interactive Interpreter $ python Python 2.7.3 (default, Apr 10 2013, 05:46:21) [GCC 4.6.3] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>>
  11. 11. Hello, World! >>> print 'Hello, World!' Hello, World! >>> >>> print 'Welcome to PYSEC101 Course' Welcome to PYSEC101 Course >>> >>> 'Hello World' 'Hello World' >>> 3 3 >>>
  12. 12. Use the interpreter as a simple calculator >>> 12 / 7 1 >>> >>> 12.0 / 7 1.7142857142857142 >>> >>> float(12) / 7 1.7142857142857142 >>>
  13. 13. Order of operations () 2. exponents and roots 3. multiplication and division 4. Addition and subtraction 1. >>> 3 + 2 * 4 11 >>> ( 3 + 2 ) * 4 20 >>> The most recent output value is automatically stored by the interpreter in a special variable with the name "_“ >>> _ 20 >>>
  14. 14. Execute a Python script • The interactive interpreter is great for checking small bits of code but if we have to write a serious program or script, we need to save our script in a file. • To save and edit programs in a file we need an editor. • There are lots of editors, but you should choose one, which supports syntax highlighting and indentation. Under Linux you can use vi, vim, sublime text, Eclipse, emacs, geany, gedit and others.
  15. 15. Execute a Python script $ vim Hello.py print 'Hello, World!' ~ ~ ~ ~ ~ ~ ~ $ python Hello.py Hello, World!
  16. 16. References SPSE securitytube training by Vivek Ramachandran SANS Python for Pentesters (SEC573) Violent python Security Power Tools python-course.eu http://docs.python.org/2/reference/expressions.html http://en.wikibooks.org/wiki/Python_Programming/Operators http://en.wikipedia.org/wiki/Order_of_operations http://www.python-course.eu/history_and_philosophy.php http://www.python-course.eu/why_python.php http://www.python-course.eu/interactive.php
  17. 17. This work is licensed under the Creative Commons Attribution-NoDerivs 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nd/3.0/ Copyright 2013 Mohammad Reza Kamalifard All rights reserved. Go to Kamalifard.ir/pysec101 to Download Slides and Course martials .

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