https://github.com/majd/ipatool
brew tap majd/repo
brew install ipatool
ipatool auth login -e {[email protected]} -p {yourpassword}
ipatool search "{yoursearchkeyword}" and copy the bundleId from the replied json
ipatool download -b "{copiedBundleId}"
Modify the *.ipa to *.zip and uncompress it!