🧪 Laudanum – "One Web Shell to Rule Them All"

🔍 What is Laudanum?

• Laudanum is a collection of pre-built injectable web shell files.

• Supports various web technologies: ASP, ASPX, PHP, JSP, etc.

• Built-in to Kali Linux and Parrot OS.

• Can be used for:

  • Uploading reverse shells

  • Executing OS commands from the browser

  • Gaining remote code execution (RCE)

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📁 Location

On Kali/Parrot OS:

/usr/share/laudanum

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💡 Usage Considerations

• Most shells work as-is, but some require:

  • Modifying the attacker’s IP address (for reverse shells).

  • Removing ASCII art/comments to evade detection.

• Always read the comments in the file before use.

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🧪 Laudanum Demonstration Steps

1️⃣ Add Entry to /etc/hosts:

Edit /etc/hosts on your attacking VM or Pwnbox to associate the target hostname:

sudo nano /etc/hosts

Add:

<target-ip> status.inlanefreight.local

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2️⃣ Copy & Modify the Shell

Choose and copy a web shell to your working directory for editing:

cp /usr/share/laudanum/aspx/shell.aspx /home/tester/demo.aspx

Edit line 59 and set your attacking IP:

string[] allowedIps = { "10.10.14.12" };

🛡️ Optional: Remove comments and ASCII art to reduce AV detection.

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3️⃣ Upload the Shell

Go to the web app's Upload Section (at the bottom of the status page) and upload demo.aspx.

✅ A successful upload should display the upload path (e.g., \\files\demo.aspx).

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4️⃣ Access the Web Shell

Navigate to the uploaded file using a browser:

status.inlanefreight.local//files/demo.aspx

🧠 Note: Use \\ (which auto-converts to / in the browser). The web server may:

• Keep the original filename

• Obfuscate it (random strings)

• Sanitize or restrict access

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5️⃣ Use the Shell

Laudanum provides a form interface where you can enter system commands.

Example usage:

systeminfo

Click Submit Query to run.

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🧰 Summary of Features

• ✅ Built-in HTTP command interface

• ✅ Preconfigured for common use cases

• ✅ Works with minimal tweaking

• ❗ May be detectable by AV/EDR → remove obvious signatures

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🚀 Next Step

Use the web shell to:

• Run recon (e.g., whoami, ipconfig, systeminfo)

• Upload a reverse shell payload to gain persistent interactive access

• Enumerate services and users before privilege escalation

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Let me know if you'd like a cheatsheet of common commands to run from the Laudanum shell or help upgrading it to a reverse shell session.