Monday, February 20, 2017

Install python scapy on MAC OS X Sierra

Python ships by default with OSX and resides in the path /usr/bin/python. Having run into a lot of problems with installing and using scapy and other packages with the correct version of python, pip and homebrew, I decided to write steps that anyone can follow to setup a clean and working python environment in OSX without running it in a virtual environment.

Step 0: Check existing python version by the command `which python`. This should yield
$ /usr/bin/python

Step 1: Install homebrew
$ /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
(Reference: https://brew.sh/)

Step 2: Install python and pip using brew and pypcap using pip:
brew install python
pip install pypcap

Step 3: Setup your PATH variable correctly in ~/.bashrc to use the python installed by the above command in /usr/local/bin:
PATH=/usr/local:/usr/local/bin:$PATH
(add the above line at the end of your ~/.bashrc or ~/.zshrc, whichever shell you are using)

Step 4: Force updates to PATH variable by using source:
$ source ~/.bashrc

Step 5: At this point, if everything worked correctly, the output of `which python` and `which pip`should yield /usr/local/bin/python and /usr/local/bin/pip respectively

Step 6: Install scapy
$ pip install scapy

Step 7: Run scapy
If you get errors like "INFO: Can't import packageXYZ. ...", see step 8 below to fix dependencies.

Step 8: Fix Dependencies
i) pyx
(If using python 2.7): $ pip install pyx==0.12.1 -I --no-cache
(If using python 3): $ pip install pyx

ii) pycrypto
$ pip install pycrypto

iii) ecdsa lib
$ pip install ecdsa

Step 9: Test scapy again
19:55:35 Karans-MacBook-Pro ~: scapy
Welcome to Scapy (2.3.3)
>>>

The above shows a successful run of scapy with all dependencies correctly installed.

5 comments:

  1. Useful article. You can probably add the below as step 8 - (iv) to avoid matplotlib warning.
    (iv) pip install matplotlib

    ReplyDelete
  2. There is a reason why I bought a Mac, it was not to be one of the cool kids that wanted the best of the best. No it was because of the music production I do on it. Hours and hours sitting in front of my Mac copying, pasting, moving, deleting, hour after hour just beating on my Mac in a endless assault to get my work done. That is the key part, my work. I work from home, it is great, but even if it is from home it is still work and it still needs to get done. So my Mac, I have it because it is fast, gets the job done and comes back for more.

    But what happens when it doesn't want to do those things anymore?

    I move around massive amounts of information and yes even on the almighty Mac this can cause a problem after a while. Things fragment, programs get corrupted issues come up. My light speed Mac slows down to a crawl and all of the sudden I simply can not get any work done. Because I work from home there is no IT guy to call and ask to come fix it. No instead I have to figure out what is wrong. I am lucky, I did, but not after trying everything under the sun first and wasting countless hours looking for one program that can do what I needed instead of ten programs. One program to lead them all….okay that was a lame Lord of the rings reference, but that program was/is Detox My Mac. A simple to use program that did not just fix my issues, it put my Mac on overdrive again. A few clicks and my Mac was clean and ready to rock and roll again.

    Read more here:- http://detox-my-mac.com?98274rwehf78t34

    ReplyDelete
  3. There is a reason why I bought a Mac, it was not to be one of the cool kids that wanted the best of the best. No it was because of the music production I do on it. Hours and hours sitting in front of my Mac copying, pasting, moving, deleting, hour after hour just beating on my Mac in a endless assault to get my work done. That is the key part, my work. I work from home, it is great, but even if it is from home it is still work and it still needs to get done. So my Mac, I have it because it is fast, gets the job done and comes back for more.

    But what happens when it doesn't want to do those things anymore?

    I move around massive amounts of information and yes even on the almighty Mac this can cause a problem after a while. Things fragment, programs get corrupted issues come up. My light speed Mac slows down to a crawl and all of the sudden I simply can not get any work done. Because I work from home there is no IT guy to call and ask to come fix it. No instead I have to figure out what is wrong. I am lucky, I did, but not after trying everything under the sun first and wasting countless hours looking for one program that can do what I needed instead of ten programs. One program to lead them all….okay that was a lame Lord of the rings reference, but that program was/is Detox My Mac. A simple to use program that did not just fix my issues, it put my Mac on overdrive again. A few clicks and my Mac was clean and ready to rock and roll again.

    Read more here:- http://detox-my-mac.com?duhhf9265hskfhf98346

    ReplyDelete
  4. There is a reason why I bought a Mac, it was not to be one of the cool kids that wanted the best of the best. No it was because of the music production I do on it. Hours and hours sitting in front of my Mac copying, pasting, moving, deleting, hour after hour just beating on my Mac in a endless assault to get my work done. That is the key part, my work. I work from home, it is great, but even if it is from home it is still work and it still needs to get done. So my Mac, I have it because it is fast, gets the job done and comes back for more.

    But what happens when it doesn't want to do those things anymore?

    I move around massive amounts of information and yes even on the almighty Mac this can cause a problem after a while. Things fragment, programs get corrupted issues come up. My light speed Mac slows down to a crawl and all of the sudden I simply can not get any work done. Because I work from home there is no IT guy to call and ask to come fix it. No instead I have to figure out what is wrong. I am lucky, I did, but not after trying everything under the sun first and wasting countless hours looking for one program that can do what I needed instead of ten programs. One program to lead them all….okay that was a lame Lord of the rings reference, but that program was/is Detox My Mac. A simple to use program that did not just fix my issues, it put my Mac on overdrive again. A few clicks and my Mac was clean and ready to rock and roll again.

    Read more here:- http://detox-my-mac.com?duhhf9265hskfhf98346

    ReplyDelete
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    ReplyDelete