XECA : PowerShell Payload Generator

XECA is a project that creates encrypted PowerShell payloads for offensive purposes. Creating position independent shellcode from DLL files is also possible.

Install

Firstly ensure that rust is installed, then build the project with the following command:

cargo build

How It Works?

  • Identify and encrypt the payload. Load encrypted payload into a powershell script and save to a file named “launch.txt”
  • The key to decrypt the payload is saved to a file named “safe.txt”
  • Execute “launch.txt” on a remote host
    • The script will call back to the attacker defined web server to retrieve the decryption key “safe.txt”
    • Decrypt the payload in memory
    • Execute the intended payload in memory

Mitigations

If users must have access to programs such as powershell.exe, consider minimising security risks with Just Enough Administration and PowerShell Logging. Application control policies can be deployed via a whitelisting technology such as AppLocker.

Mitigations

If users must have access to programs such as powershell.exe, consider minimising security risks with Just Enough Administration and PowerShell Logging. Application control policies can be deployed via a whitelisting technology such as Ap pLocker.

Acknowledgements

This tool would not be possible without the sharing of knowledge and information. Ideas, snippets and code from the following authors should be acknowledged:
@monoxgas
@H0neyBadger
@stephenfewer
@dismantl

License

xeca is licensed under GPLv3, some sub-components may have separate licenses. See their respective references in this project for details.

R K

Recent Posts

Playwright-MCP : A Powerful Tool For Browser Automation

Playwright-MCP (Model Context Protocol) is a cutting-edge tool designed to bridge the gap between AI…

3 weeks ago

JBDev : A Tool For Jailbreak And TrollStore Development

JBDev is a specialized development tool designed to streamline the creation and debugging of jailbreak…

3 weeks ago

Kereva LLM Code Scanner : A Revolutionary Tool For Python Applications Using LLMs

The Kereva LLM Code Scanner is an innovative static analysis tool tailored for Python applications…

3 weeks ago

Nuclei-Templates-Labs : A Hands-On Security Testing Playground

Nuclei-Templates-Labs is a dynamic and comprehensive repository designed for security researchers, learners, and organizations to…

3 weeks ago

SSH-Stealer : The Stealthy Threat Of Advanced Credential Theft

SSH-Stealer and RunAs-Stealer are malicious tools designed to stealthily harvest SSH credentials, enabling attackers to…

3 weeks ago

ollvm-unflattener : A Tool For Reversing Control Flow Flattening In OLLVM

Control flow flattening is a common obfuscation technique used by OLLVM (Obfuscator-LLVM) to transform executable…

3 weeks ago