require 'ruby_apk'
​
apk = Android::Apk.new('diva-beta.apk')
​
# listing files in apk
apk.each_file do |name, data|
  puts "#{name}: #{data.size}bytes" # puts file name and data size
end
​
# Extract icon data in Apk
icons = apk.icon
icons.each do |name, data|
  File.open(File.basename(name), 'wb') {|f| f.write data } # save to file.
end
​
# Extract signature and certificate information from Apk
signs = apk.signs                   # retrun Hash(key: signature file path, value: OpenSSL::PKCS7)
signs.each do |path, sign|
  puts path
  puts sign
end
​
# Manifest
## Get readable xml
manifest = apk.manifest
puts manifest.to_xml
​
## Listing components and permissions
manifest.components.each do |c|     # 'c' is Android::Manifest::Component object
  puts "#{c.type}: #{c.name}"
  c.intent_filters.each do |filter|
    puts "\t#{filter.type}"
  end
end
​
## Extract application label string
puts apk.manifest.label
​
# Resource
## Extract resource strings from apk
rsc = apk.resource
rsc.strings.each do |str|
  puts str
end
​
## Parse resource file directly
rsc_data = File.open('resources.arsc', 'rb').read{|f| f.read }
rsc = Android::Resource.new(rsc_data)
​
# Resolve resource id
rsc = apk.resource
​
## assigns readable resource id
puts rsc.find('@string/app_name')   # => 'application name'
​
## assigns hex resource id
puts rsc.find('@0x7f040000')        # => 'application name'
​
## you can set lang attribute.
puts rsc.find('@0x7f040000', :lang => 'ja')
​
# Dex
## Extract dex information
dex = apk.dex
### listing string table in dex
dex.strings.each do |str|
  puts str
end
​
### listing all class names
dex.classes.each do |cls|           # cls is Android::Dex::ClassInfo
  puts "class: #{cls.name}"
  cls.virtual_methods.each do |m|   # Android::Dex::MethodInfo
    puts "\t#{m.definition}"        # puts method definition
  end
end
​
## Parse dex file directly
dex_data = File.open('classes.dex','rb').read{|f| f.read }
dex = Android::Dex.new(dex_data)