thehacker-4chan / Athena

Athena

Athena is a fully-featured cross-platform agent designed using the .NET 6. Athena is designed for Mythic 2.2 and newer. The current recommended version is 2.3+ however, 2.2 will still function, although task output won't be as nice. As this is still an early release, bugs are expected.

Features

• Crossplatform
  • Windows
  • Linux
  • OSX
  • Potentially More!
• SOCKS5 Support (Beta)
• P2P Agent support
  • SMB
  • More coming soon
• Reflective loading of Assemblies
• Modular loading of commands
• Easy plugin development
• Easy development of new communication methods

Installation

1.) Install Mythic from here

2.) From the Mythic install directory run the following command:

./mythic-cli install github https://github.com/MythicAgents/Athena

Supported C2 Profiles

HTTP

Athena can act as an egress channel over the default http Profile in use by Mythic.

Note: All taskings and Responses are done via POST requests. So the GET URI parameter is unnecessary at this time.

Websockets

Athena can act as an egress channel over the websocket profile. This is the recommended profile to use when making use of the SOCKS5 functionality.

Slack

Athena can communicate over a slack channels.

Note: Due to slack API rate limiting, the number of agents that can be executed at once using a specific workspace/token combination is limited. A lower sleeptime supports more agents.

SMB

Athena supports SMB communications for internal comms over named pipes.

Opsec Considerations

Agent Size

There are multiple ways Athena can be built which have a large effect on the final size of the payload

• Standard
  • The smallest option. This contains just the base agent code, and requires you to package all of the DLLs with the agent. Not great for phishing, but the option is there if you want it.
  • File Size: 114KB
• Self Contained
  • The largest option. This contains the base agent code, and the entire .NET framework. This file will be very large, but will allow for the most flexibility when operating. Compression shrinks this size down dramatically
  • File Size: 63MB
  • Compressed Size: 33.8MB
• Self-Contained Trimmed
  • Medium option. This contains the base agent code, and only the required libraries. This file is smaller than the regular self contained option, however you may encounter some difficulties with custom execute-assembly assemblies. You will need to load their dependencies manually using load-assembly even if they're usually built into the framework
  • File Size: 18.5MB
  • Compressed Size: 12.8MB
• NativeAOT
  • Alternative Medium option. NativeAOT is still in development for the .NET framework. This allows the entire payload to be statically compiled, however you lose the ability to reflectively load plugins. So you'll be limited to built-in commands, SOCKS5, and SMB support.
  • File Size: 28MB

Credit

@its_a_feature_ - Creator of the Mythic framework

@0okamiseishin - For creating the Athena logo

@djhohnstein - For crypto code, and advice regarding development

@tr41nwr3ck - For plugin development & testing

Changelog

09/08/2022 - 0.2 release

• Refactored base agent code
• Refactor of plugin loading capabilities
• Improvements to SMB C2 Profile
• Stability Improvements
• Added support fort ps and ls mythic hooks
• Added the following capabilities
  • token
  • farmer & crop
  • load-module
  • ds
  • sftp
  • ssh
  • get-sessions
  • get-localgroup
  • get-shares
  • inline-exec
  • test-port
  • win-enum-resources
  • reg

02/15/22 - 0.1 release

• Initial Release