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Lamperl pt 3 (Uploads, Downloads, Job Control)
p0142.github.iowriteup

Lamperl pt 3 (Uploads, Downloads, Job Control)

Part 3 of the 'Lamperl' series documents building a Perl-based agent for the Adaptix C2 framework, adding a reusable async job-control system (fork + pipes + non-blocking reads) that converts synchronous commands into backgroundable jobs, plus file upload/download support including manual HTTP chunked-transfer-encoding parsing and base64 encoding of file contents. It covers the Go-side pl_agent.go CreateTask/ProcessTasksResult integration and Adaptix Task Manager UI hooks (ax_config.axs) for job list/get/kill commands.

TL;DR Walkthrough of adding async job control and file upload/download to a custom Perl agent for the Adaptix C2 framework.
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Technologies named here

Techniques named here

  • Asynchronous job execution via higher-order wrapper
  • Non-blocking I/O via pipes and fcntl
  • Job state tracking and reaping
  • Automatic completion reporting
  • Job control commands
  • File upload via base64-encoded chunked transfer
  • File download via base64 encoding
  • HTTP chunked transfer encoding parser
  • Output sanitization for console display

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