CoCalc provides the best real-time collaborative environment for Jupyter Notebooks, LaTeX documents, and SageMath, scalable from individual users to large groups and classes!

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##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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require 'faraday'
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class MetasploitModule < Msf::Auxiliary
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  def initialize
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    super(
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      'Name' => 'Telegram Message Client',
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      'Description' => %q{
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        This module can be used to send a document and/or message to
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        multiple chats on telegram. Please refer to the module
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        documentation for info on how to retrieve the bot token and corresponding chat
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        ID values.
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        },
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      'Author' => [
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        'Ege Balcı <egebalci[at]pm.me>', # Aka @egeblc of https://pentest.blog
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        'Gaurav Purswani' # @pingport80
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      ],
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      'License' => MSF_LICENSE,
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    )
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    register_options(
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      [
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        OptString.new('BOT_TOKEN', [true, 'Telegram BOT token', '']),
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        OptString.new('MESSAGE', [false, 'The message to be sent']),
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        OptInt.new('CHAT_ID', [false, 'Chat ID for the BOT', '']),
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        OptPath.new('DOCUMENT', [false, 'The path to the document(binary, video etc)']),
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        OptPath.new('IDFILE', [false, 'File containing chat IDs, one per line']),
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        OptEnum.new('FORMATTING', [false, 'Message formatting option (Markdown|MarkdownV2|HTML)', 'Markdown', [ 'Markdown', 'MarkdownV2', 'HTML']])
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      ], self.class
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    )
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  end
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  def formatting
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    datastore['FORMATTING']
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  end
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  def message
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    datastore['MESSAGE']
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  end
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  def document
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    datastore['DOCUMENT']
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  end
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  def bot_token
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    datastore['BOT_TOKEN']
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  end
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  def id_file
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    datastore['IDFILE']
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  end
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  def send_document(conn, chat_id)
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    unless ::File.file?(document) && ::File.readable?(document)
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      fail_with(Failure::BadConfig, 'The document to be sent does not exist or is not a readable file!')
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    end
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    raw_params = { 'chat_id' => chat_id, 'document' => Faraday::UploadIO.new(document, 'application/octet-stream') }
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    params = {}
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    raw_params.each_with_object({}) do |(key, value), _tmp_params|
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      params[key] = value
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    end
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    response = conn.post("/bot#{bot_token}/sendDocument", params)
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    if response.status == 200
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      print_good("Document sent successfully to #{chat_id}")
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    elsif response.status == 403
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      print_bad("Error while sending document! Make sure you have access to message chat_id : #{chat_id}")
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    else
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      print_bad("Error while sending the document to #{chat_id} API Status : #{response.status}")
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    end
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  end
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  def send_message(conn, chat_id)
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    params = { 'chat_id' => chat_id, 'text' => message, 'parse_mode' => formatting }
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    response = conn.post("/bot#{bot_token}/sendMessage", params)
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    if response.status == 200
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      print_good("Message sent successfully to #{chat_id}")
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    elsif response.status == 403
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      print_bad("Error while sending document! Make sure you have access to message chat_id : #{chat_id}")
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    else
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      print_bad("Error while sending the message to chat_id #{chat_id} API Status : #{response.status}")
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    end
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  end
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  def run
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    unless document || message
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      fail_with(Failure::BadConfig, 'You must supply a message and/or document')
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    end
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    url = 'https://api.telegram.org'
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    conn = Faraday.new(url: url) do |faraday|
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      faraday.request :multipart
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      faraday.request :url_encoded
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      faraday.adapter Faraday.default_adapter
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    end
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    if id_file
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      print_warning("Opening `#{id_file}` to fetch chat IDs...")
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      unless ::File.file?(id_file) && ::File.readable?(id_file)
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        fail_with(Failure::BadConfig, 'The ID file is not an existing readable file!')
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      end
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      File.readlines(id_file).each do |chat_id|
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        send_document(conn, chat_id) if document
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        send_message(conn, chat_id) if message
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      end
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      return
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    end
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    send_document(conn, datastore['CHAT_ID']) if document
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    send_message(conn, datastore['CHAT_ID']) if message
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  end
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end
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