Cyber security

Its-A-Trap : Building Secure Web Applications With A Golang Web Server For Authentication

Simple golang webserver that listens for basic auth or post requests and sends a notification when a user enters a password.

You need to add your custom templates and post the username and password parameter to /login when using the post mode.

Folder Layout

its-a-trap/custom
├── assets
│   └── styles.css
└── templates
    ├── finish.html
    └── index.html

This will serve index.html and show finish.html upon sending a post request. You can use the asset_folder to store your custom assets needed for the templates. In basic auth mode only finish.html is shown.

Basic Auth Example

{
  "server": {
    "listen": "127.0.0.1",
    "port": 8000
  },
  "method": "basic",
  "cloudflare": false,
  "timeout": "5s",
  "basic": {
    "realm": "restricted",
  },
  "template": {
    "folder": "./custom/templates",
    "index_template": "index.html",
    "finish_template": "finish.html",
    "asset_folder": "./custom/assets"
  }
}

Post Example

{
  "server": {
    "listen": "127.0.0.1",
    "port": 8000
  },
  "method": "post",
  "cloudflare": false,
  "timeout": "5s",
  "template": {
    "folder": "./custom/templates",
    "index_template": "index.html",
    "finish_template": "finish.html",
    "asset_folder": "./custom/assets"
  }
}

In POST mode you have access to the following variables inside the template:

  • {{ .LoginURL }} – The URL to post to
  • {{ .UsernameParameter }} – the username parameter name
  • {{ .PasswordParameter }} – the password parameter name

Example:

<form action="{{ .LoginURL }}" method="post">
  <label for="fname">Username:</label>
  <input type="text" id="fname" name="{{ .UsernameParameter }}"><br><br>
  <label for="fpass">Password:</label>
  <input type="password" id="fpass" name="{{ .PasswordParameter }}"><br><br>
  <input type="submit" value="Submit">
</form>
Tamil S

Tamil has a great interest in the fields of Cyber Security, OSINT, and CTF projects. Currently, he is deeply involved in researching and publishing various security tools with Kali Linux Tutorials, which is quite fascinating.

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