MODULE

Powershell Exec, DNS TXT Record Payload Download and Execution

Try Surface Command Get a continuous 360° view of your attack surface
Back to Search

Powershell Exec, DNS TXT Record Payload Download and Execution

Created
05/11/2022

Description

Execute an x86 payload from a command via PowerShell. Performs a TXT query against a series of DNS record(s) and executes the returned x86 shellcode. The DNSZONE option is used as the base name to iterate over. The payload will first request the TXT contents of the a hostname, followed by b, then c, etc. until there are no more records. For each record that is returned, exactly 255 bytes from it are copied into a buffer that is eventually executed. This buffer should be encoded using x86/alpha_mixed with the BufferRegister option set to EDI.

Author(s)

  • Spencer McIntyre
  • corelanc0d3r <peter.ve@corelan.be>

Platform

Windows

Architectures

cmd

Development

Module Options

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

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

;