In March I created a Windows Application Using Visual Studio Code, Cline, OpenRouter, and Claude. This was a program that created square screen captures. The user doesn't need to manually ensure the dimensions are a square. The program …

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In March I created a Windows Application Using Visual Studio Code, Cline, OpenRouter, and Claude.
This was a program that created square screen captures. The user
doesn't need to manually ensure the dimensions are a square. The program
makes the window grow and shrink while keeping the length equal to the
height.

In June I created an equivalent program on Linux using VSCodium, Cline, OpenRouter, and Claude.

I provided this prompt, which I derived from the last project.

Create a graphical Linux application to take screen captures with the following features:

Square Region Selection: Enforces a 1:1 aspect ratio during region selection

1:1 Aspect Ratio: Ensures all captures are perfectly square

PNG Output: Saves high-quality images in PNG format

Preview: Shows the captured image before saving

Dark Mode by Default: Toggle to light theme if desired

Square Interface: The application window itself uses a square ratio

Default Save Location: Set a preferred folder for saving captures

Automatic File Naming: Uses format "BejCap-YYYYMMDD###" for organized file management

I prefer C++ with Qt.

For shortcuts use Ctrl+S to Save the current image and Esc to Cancel region selection (when in region selection mode).

I do not want to capture to clipboard.

I also supplied these guidelines:

Always test the project at the end to ensure it doesn't contain errors.

Don't create placeholder code unless you plan to expand on it later.

Code from A to Z rather than just small parts that don't fulfill the user's needs.

Keep project files between 300-500 lines where possible.

Don't duplicate code. Build upon existing implementations.

I had to install the following to enable the program development:

sudo apt install build-essential cmake qtbase5-dev qt5-qmake qtbase5-dev-tools

The development seemed much faster than my last project, and the result works very well.

If you'd like to try it on Linux, you can access it here: https://github.com/taosecurity/BejSnap.

CTI Threat Relationship Graph3 Knoten / 2 Relationen

CVE / Incident Software MITRE ATT&CK CWE Weakness IoC

IR-PLAYBOOK-RCEHIGH

Schritte anzeigen

SOC Incident Playbook: Remote Code Execution (RCE) Defense

WAF MitigationSofort

Virtuelles Patchen am Reverse Proxy / WAF für gefährdete URL-Pfade und Payloads aktivieren.

SecRule REQUEST_URI "@rx ..." "id:1001,phase:1,deny,status:403"

Web Shell ScanSofort

Web-Root auf neu angelegte Scripts, anomal modifizierte Dateien und Persistence scannen.

find /var/www -type f -name "*.php" -mmin -120

Outbound FilteringSofort

Ausgehenden Datenverkehr (Reverse Shells zu unbekannten IPs/Ports) blockieren.

ss -tunp | grep -E ":(4444|1337|8080|9001)"

Vendor Patching

Hersteller-Update in Staging validieren und schnellstmöglich in Produktion ausrollen.

apt update && apt --only-upgrade install <pkg>

1-Click Detection Engineering: Multi-Dialect SIEM Rules5 Formate

Regeln anzeigen

Syntax validiert (0 Fehler)

title: Detect Exploitation - Creating a Linux Application Using VSCodium, Cline, OpenRouter, and Claude
id: 26fb7e86-a8fc-48fd-a334-171d5121001a
status: experimental
description: Automatisch generierte SIEM-Erkennungsregel basierend auf CTI Intelligence
references:
  - https://tsecurity.de/
author: iShareStuff CTI Automated Detection Engine
date: 2026-09-25
logsource:
  category: network_connection
  product: any
detection:
  selection:
      CommandLine|contains:
        - 'exploit'
  condition: selection
falsepositives:
  - Legitime administrative Zugriffe oder Penetrationstests
level: high
tags:
  - attack.initial_access

Syntax validiert (0 Fehler)

rule CTI_Threat_Indicator {
    meta:
        author = "iShareStuff CTI Automated Detection Engine"
        date = "2026-09-25"
        description = "YARA Signature for "
    strings:
        $str = "Creating a Linux Application U" ascii wide
    condition:
        any of them
}

Syntax validiert (0 Fehler)

index=security sourcetype IN ("cisco:asa", "pan:traffic", "zeek_conn", "suricata", "WinEventLog:Security")
("Creating a Linux Application Using VSCod")
| stats count earliest(_time) as first_seen latest(_time) as last_seen by src_ip, dest_ip, dest_host, signature
| eval first_seen=strftime(first_seen, "%Y-%m-%d %H:%M:%S"), last_seen=strftime(last_seen, "%Y-%m-%d %H:%M:%S")
| sort - count

Syntax validiert (0 Fehler)

message: "*Creating a Linux Application Using VSCod*"

Syntax validiert (0 Fehler)

CommonSecurityLog
| where Message has "Creating a Linux Application Using VSCod"
| summarize EventCount = count(), FirstSeen = min(TimeGenerated), LastSeen = max(TimeGenerated) by SourceIP, DestinationIP, DestinationPort, Activity
| extend DetectionRule = "iShareStuff-CTI-Compiled"
| sort by EventCount desc

🎯

MITRE ATT&CK Matrix Navigator 14 Taktiken

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

💡 Tipp: Klicken Sie auf eine TTP, um Gegenmaßnahmen und SIEM-Erkennungsregeln anzuzeigen.Enterprise Matrix v14.1

🚀 Auf tsecurity.de entdecken

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Fokus-Vektor:

Kognitive Analyse für identifizierte Bedrohung: Erhöhte Bedrohungslage im Bereich Creating a Linux Application Using VSCod.... Basierend auf 368k Vektor-Korrelationen werden sofortige Isolationsmaßnahmen für betroffene Endpunkte empfohlen.

🛡️ Angriffsfläche & Exposure

Netzwerk/Remote-Zugriff ohne Vorauthentifizierung möglich.

⚡ Empfohlene Sofortmaßnahmen

1. Perimeter-Inspektion: Relevante Portfreigaben und exponierte Endpunkte unverzüglich scannen.
2. Patch-Applikation: Hersteller-Hotfix einspielen oder betroffene Daemons in isolierte DMZ-Segmente überführen.
3. Telemetrie & EDR-Alerts: Prozessaufrufe und Child-Processes auf anomale Shell-Spawns überwachen.

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Schnell-Prompts für Analysten

⚠️ DEFANGED SANDBOX VIEW (tsecurity.de): Alle Netzwerkindikatoren und URLs wurden neutralisiert (2 Indikatoren entschärft). Nur zur defensiven Analyse!

Format: python

#!/usr/bin/env python3
# Exploit Title: PoC for Target
import socket, sys
target = '192[.]168[.]1[.]10'
url = 'hxxp://target[.]local/vuln'
s = socket.socket()
s.connect((target, 80))
s.send(b'GET / HTTP/1.1\r\nHost: target.local\r\n\r\n')