metasploit-framework

https://github.com/rapid7/metasploit-framework

Ruby

Metasploit Framework

MetasploitModule#calc_required_lsbs

calculate the least number of bits that must be modified to place the
shellcode buffer into the image data

Source | Google | Stack overflow

Edit

git clone [email protected]:rapid7/metasploit-framework.git
cd metasploit-framework
open modules/encoders/x86/bmp_polyglot.rb

Contribute

# Make a new branch
git checkout -b -your-name--update-docs-MetasploitModule-calc_required_lsbs-for-pr

# Commit to git
git add modules/encoders/x86/bmp_polyglot.rbgit commit -m "better docs for MetasploitModule#calc_required_lsbs"

# Open pull request
gem install hub # on a mac you can `brew install hub`
hub fork
git push <your name> -your-name--update-docs-MetasploitModule-calc_required_lsbs-for-pr
hub pull-request

# Celebrate!