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macOS Gatekeeper check bypass

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macOS Gatekeeper check bypass

Disclosed
03/25/2021
Created
05/07/2021

Description

This module serves an OSX app (as a zip) that contains no Info.plist, which bypasses gatekeeper in macOS < 11.3. If the user visits the site on Safari, the zip file is automatically extracted, and clicking on the downloaded file will automatically launch the payload. If the user visits the site in another browser, the user must click once to unzip the app, and click again in order to execute the payload.

Author(s)

  • Cedric Owens
  • timwr

Development

Module Options

To display the available options, load the module within the Metasploit console and run the commands 'show options' or 'show advanced':

msf > use exploit/osx/browser/osx_gatekeeper_bypass
msf exploit(osx_gatekeeper_bypass) > show targets
    ...targets...
msf exploit(osx_gatekeeper_bypass) > set TARGET < target-id >
msf exploit(osx_gatekeeper_bypass) > show options
    ...show and set options...
msf exploit(osx_gatekeeper_bypass) > exploit

Time is precious, so I don’t want to do something manually that I can automate. Leveraging the Metasploit Framework when automating any task keeps us from having to re-create the wheel as we can use the existing libraries and focus our efforts where it matters.

– Jim O’Gorman | President, Offensive Security

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