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Data Theft Repackaged: A Case Study in Malicious Wrapper Packages on npm
The Socket Research Team breaks down a malicious wrapper package that uses obfuscation to harvest credentials and exfiltrate sensitive data.
Postfixのデーモンプログラムを作るためのライブラリです。
Add this line to your application's Gemfile:
gem 'postfix_daemon'
And then execute:
$ bundle
Or install it yourself as:
$ gem install postfix_daemon
プログラムを書きます。
入力を大文字に変換して返すプログラムの例:
#!/path/to/ruby
require 'postfix_daemon'
# エラー終了してもどこにも出力されないのでリダイレクトしといた方がよさそう
$stderr.reopen("/tmp/error.log", "a+")
PostfixDaemon.start do |socket, addr|
socket.puts "you are #{addr.inspect}"
while s = socket.gets
s = s.force_encoding("utf-8").scrub
socket.puts s.upcase
end
end
プログラムを /usr/lib/postfix/sbin に置きます。
# cp hoge.rb /usr/lib/postfix/sbin/hoge
# chmod +x /usr/lib/postfix/sbin/hoge
master.cf に追加:
12345 inet - - - - - hoge
postfix reload
# postfix reload
% nc localhost 12345
you are #<Addrinfo: 127.0.0.1:59312 TCP>
abcdefg
ABCDEFG
^C
FAQs
Unknown package
We found that postfix_daemon demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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