Pyliners

Tweets of @pyliners

Neat little Python recipes in under 140 characters

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Table of Contents

• URL encode a string in Python
• Diff two directories
• Get ASN details for an IP address
• Covert a string to ROT13
• Display list of all the users on Unix-like systems
• Decode base64
• Encode a string to base64
• Print a calender
• Print the platform details
• Minimal HTTP server Python3.x
• Minimal HTTP server Python2.x
• Print zen of Python
• Import antigravity
• Print "Hello, world!"

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URL encode a string in Python

python -c "import urllib; print urllib.quote_plus('string_of_characters_like_these:$#@=?%^Q^$')"

Diff two directories

• Diff two directories
• Prints the contents that are unique to each directory

python -m filecmp dir1 dir2

Get ASN details for an IP address

• Handy during information gathering in a pentest

echo 8.8.8.8 | python -c "import urllib,json,sys;print json.load(urllib.urlopen('https://api.iptoasn.com/v1/as/ip/'+sys.stdin.read()))['as_number']"

curl -s http://ip-api.com/json/8.8.8.8  | python -c 'import sys, json; print json.load(sys.stdin)["as"]'

Covert a string to ROT13

• ROT13 is a substitution cipher, it's fairly common to see ROT13 strings as part of CTF challenges

python -m encodings.rot_13 <<< "Sample string"

Display list of all the users on Unix-like systems

• Requires read access to /etc/passwd file

python -c "print '\n'.join(line.split(':',1)[0] for line in open('/etc/passwd'))"

Decode base64

• Decode base64 encoded string
• Comes handy during pentests/CTFs

python -m base64 -d <<< "dGhpcyBpcyBlbmNvZGVkCg=="

Encode a string to base64

• Encode a string to base64
• Comes handy during pentests/CTFs

python -m base64 <<< 'apple'

Print a calender

• Prints a calender

python -m calendar

Print the platform details

• Prints the underlying platform details
• platform module is OS agnostic.

python -m platform

Minimal HTTP server Python3.x

• Minimal HTTP server in Python 3.X
• Comes handy when transfer files(esp during pen testing)

python -m http.server 8000

Minimal HTTP server Python2.x

• Minimal HTTP server that supports GET and HEAD request handlers
• Comes handy when transfer files(esp during pen testing)

python -m SimpleHTTPServer 8000 

Print the zen of Python

• The Zen of Python is a collection of software principles that influences the design of Python Programming Language
• Fowiing snippet prints the zen of python

python -m this

Import antigravity

• The antigravity module, opens the XKCD comic mentioning Python in a web browser

python -c "import antigravity"

Print hello world

• This snippet will simply print the "Hello, world!" string(Python2.x syntax)
• In Python3, print is a function not a keyword

print "Hello, world!"