quick/dirty tool to extract embeded gzip files out of the evasi0n7 jailbreak binary -- requires otool so probably OSX

extract_e7_datas.rb

#!/usr/bin/env ruby

fname = ARGV.shift
fname || exit!

sections = `otool -l \"#{fname}\" |grep -A11 ^Section`.split(/^--$/).map do |sect_txt|
  lines = sect_txt.lines.map(&:chomp)
  Hash[ lines.map{|ln| ln.strip.split(' ', 2) } ]
end.select{|sect| sect["segname"] == "__DATA" and sect["sectname"] =~ /^data_\d+$/ }

dats = sections.map do |sect|
  {
    name:           sect["sectname"],
    fileoffset:     sect["offset"].to_i,
    size:           sect["size"].hex,
  }
end

f = File.open(fname, "r")
dats.each do |dat|
  f.pos = dat[:fileoffset]
  File.open(dat[:name] + ".gz", 'w'){|o| o.write(f.read(dat[:size])) }
end

FWIW: TaiG was data_10.gz inside the version I used this on...

how to use?