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Java Shell GTX100 Analysis

Overview

This repository is a research archive for a JSP specimen labeled "Java Shell GTX100".

The specimen appears to provide:

  • a system-information view
  • a file-browser mode
  • direct file download behavior when a file path is supplied

Purpose

This repository is shared for:

  • malware / web-shell research
  • defensive analysis
  • secure code review
  • detection engineering and forensic study

Important Notice

This repository is not intended for deployment or operational use. Do not install, expose, or run this code on any server you do not fully control and isolate for authorized research.

Observed Behaviors

Based on static review, the JSP:

  • accepts mod and path parameters
  • defaults to an info mode when mod is absent
  • shows Java system properties in info mode
  • lists directories and files in archive/browser mode
  • returns file contents as application/octet-stream when the supplied path points to a file

Repository Contents

  • specimen/ — original sample
  • notes/ — analysis notes
  • screenshots/ — UI captures and supporting material

Recommended Use

  • keep this repository private unless publication is necessary
  • redact any sensitive paths, IPs, or case-specific identifiers
  • use this material only for defensive or academic research

Disclaimer

The code in this repository may be dangerous if deployed. It is preserved strictly for research, documentation, and detection-oriented analysis.