HELK/docker/helk-jupyter/notebooks/sigma/web_source_code_enumeration...

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{
"cells": [
{
"cell_type": "markdown",
"metadata": {},
"source": [
"# Source Code Enumeration Detection by Keyword\n",
"Detects source code enumeration that use GET requests by keyword searches in URL strings"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Rule Content\n",
"```\n",
"- title: Source Code Enumeration Detection by Keyword\n",
" id: 953d460b-f810-420a-97a2-cfca4c98e602\n",
" description: Detects source code enumeration that use GET requests by keyword searches\n",
" in URL strings\n",
" author: James Ahearn\n",
" references:\n",
" - https://pentester.land/tutorials/2018/10/25/source-code-disclosure-via-exposed-git-folder.html\n",
" - https://medium.com/@logicbomb_1/bugbounty-how-i-was-able-to-download-the-source-code-of-indias-largest-telecom-service-52cf5c5640a1\n",
" logsource:\n",
" category: webserver\n",
" product: null\n",
" service: null\n",
" detection:\n",
" keywords:\n",
" - '*.git/*'\n",
" condition: keywords\n",
" fields:\n",
" - client_ip\n",
" - vhost\n",
" - url\n",
" - response\n",
" falsepositives:\n",
" - unknown\n",
" level: medium\n",
"\n",
"```"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Querying Elasticsearch"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"### Import Libraries"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"from elasticsearch import Elasticsearch\n",
"from elasticsearch_dsl import Search\n",
"import pandas as pd"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"### Initialize Elasticsearch client"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"es = Elasticsearch(['http://helk-elasticsearch:9200'])\n",
"searchContext = Search(using=es, index='logs-*', doc_type='doc')"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"### Run Elasticsearch Query"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"s = searchContext.query('query_string', query='*.git\\/*')\n",
"response = s.execute()\n",
"if response.success():\n",
" df = pd.DataFrame((d.to_dict() for d in s.scan()))"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"### Show Results"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"df.head()"
]
}
],
"metadata": {},
"nbformat": 4,
"nbformat_minor": 4
}