The Ultimate Guide: Nuclei Scanner Installation In 25 Simple Steps

The Ultimate Guide: Nuclei Scanner Installation In 25 Simple Steps – Nuclei is a new type of scanner that separates from the older infection scanners and is fully extensible with a very simple and easy-to-use template grammar.

At the most basic level, Nuclei is a crawler – it sends HTTP/DNS requests and checks any response for errors on the target. It runs on top of a YAML file, and users can read the behavior they want.

The Ultimate Guide: Nuclei Scanner Installation In 25 Simple Steps

The Ultimate Guide: Nuclei Scanner Installation In 25 Simple Steps

Users can easily define a match that evaluates the response for various patterns such as words or regex that extract specific content from the response using regex. In addition to powerful matching and recovery capabilities, users can also customize sent requests and have full control over every aspect of the request/response process.

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Instead of involving the scanner in vulnerability assessment, Nuclei’s approach is to focus on the core engine, leaving the task of vulnerability assessment to the end user.

The core is designed from the ground up, allowing the user to customize everything as per their needs. Below are the main objectives of the nuclear project –

Purpose This is a collection of community-made templates for the kernel. These templates are included by core users and are carefully designed to prevent false positives, malicious code, etc.

Currently 46 people have contributed to the original templates with a total of 130+ templates, some of which have been published for 1 day by the wonderful community.

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Nuclei supports downloading and running native versions of the Nuclei template library. Users can run

Repository for local downloads. If an update is released, the user is notified and can update their copy simply by running the same command again.

Templates can be deployed without specifying the full path to the templates. If the user wants to work

The Ultimate Guide: Nuclei Scanner Installation In 25 Simple Steps

. Kernels will start searching in the current folder directory and will be automatically started if the templates are installed locally

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HTTP and DNS protocols are supported by the scanner. HTTP requests can be made using the YAML declarative language or using the HTTP request raw request function. DNS queries can only be defined using the YAML language.

Games allow you to examine lines or patterns found in answers. Extractors allow the user to extract any information from any message.

The most powerful player that provides users with a unique speech language that can be adapted to their favorite situations.

Excluders are now only used in regular expressions. Users can specify a matching regex, and any matches found are returned as results. This allows for some real templates, including templates for searching HTTP responses in Slack API buttons, as well as templates for searching HTTP URLs using usernames and passwords.

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A newly added feature is workflow support, which levels and sequences requests to make the process more accurate. Job-level support is provided by the tengo project, a small portable language written in Go. Workflows have two parts: variable and logical. The template/template to create the variable. The second part is the logic that determines how the variable is created.

By using this grammar, users can precisely control the scanning process with erroneous data or slow scanning.

Which is SSRF with Jira installed. A successful CVE application returns the content of the given URL to the page. The following tax will see this process –

The Ultimate Guide: Nuclei Scanner Installation In 25 Simple Steps

To identify this vulnerability, all we need to do is to query the following URL and find a static page that returns a unique character that indicates the success achieved. We can try using a hack to request https://ipinfo.io/json , which always returns static

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It requests the following URL and checks the response for the keyword we specified earlier. It’s easy!

Fingerprint technology is one of the most important aspects of any industry. Sensing that personnel are running toward the objective allows the attacker to decide to continue the objective.

Nuclei makes it very easy to write templates for target-based fingerprinting applications. Special techniques are used to detect applications, which can find installed versions. Find a static theme for your program of choice and/or create a template that’s specific to that program.

. Using these two messages, we can write a template to see if the Jira servers are working as follows −

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. Using this information, we can write a template to easily find Jenkins servers by searching

The same method can be used to view the feature sections of any program. All you need is a unique pattern somewhere in the app that you can figure out effortlessly.

The last two sections show how to write application detection patterns and how to exploit vulnerabilities in them. This next section is about how to combine the two using the workflow capabilities of the kernel and achieve high target reference.

The Ultimate Guide: Nuclei Scanner Installation In 25 Simple Steps

Only if the Jira process is found, not on all URLs. Here is the workflow. First, you can define a workflow to test Jira’s functionality and see if it’s useful when installed.

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The document returns any results. This allows users to define very specific streams that target each application.

Etc. DNS domain code is NXDOMAIN. Kernel templates can be easily customized to handle this shortcoming.

Likewise, common HTTP-related vulnerabilities can also be patched. For example, let’s say a user wants to know if there is a value

The title appears on the page. A very simple template can be created that sends this header and checks the header value displayed on the page.

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The templates above are simple examples of what’s possible with the power of templates in the kernel.

Subdomain Takeovers are one of the most common risks faced by SaaS providers. Kernel allows you to easily see dead web pages left behind by developers.

Creating a new survey is as easy as finding a unique line on the crisis page and checking the response. For example, AWS S3 responds with a thread

The Ultimate Guide: Nuclei Scanner Installation In 25 Simple Steps

Weak pages. Using this information, discovery can be made easier using the template below.

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We’ll now look at a very interesting and powerful kernel template for implementing Tomcat HTTP basic authentication using raw requests and freezing features like Burp Intruder.

Variants with colons and Base64 include it. More information about these functions can be found in the documentation.

Nuclei is a tool especially for Bug-Bounty hunters as well as Infosec people who know how to identify vulnerabilities in systems after fingerprinting and tooling.

Depending on the size of the scan, it may take some time, so it’s best to save the scan to video.

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An interesting idea we’ve received from the community is to use kernels to scan internal systems using known threat methods to remove threats that cause internal operations. This method is very useful for DevOps teams and can lead to identifying bugs as soon as they are introduced.

In the future, we will add the following new features to this project. Follow us to get ahead.

If you’re already a core user and want to suggest a feature or share some ideas, get in touch. You can contact us/message us @pdnuclei or @pdiscoveryio. You can contact us at contact@projectdiscovery.io. We want to hear from you.

The Ultimate Guide: Nuclei Scanner Installation In 25 Simple Steps

You can follow the project on github at https://github.com/projectdiscovery/nuclei as well as the corresponding template repository at https://github.com/projectdiscovery/nuclei-templates. Contributions of new templates and ideas are welcome! ProjectDiscovery’s most popular tools are Nuclei (a pattern-based vulnerability scanner), HTTPx (a multi-HTTP resource tool), and Subfinder (a domain name reading and discovery tool). Although the installation process for the ProjectDiscovery tool is generally straightforward, you may often encounter problems setting up the proper environment to run the tool, especially when running tests on a temporary VPS or customer-provided system.

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In such cases, it makes sense to use resources from Docker. Docker is a popular platform that simplifies the deployment and management of applications with everything from tokens. By using the ProjectDiscovery tools in Docker, you can simplify the configuration process and increase the capabilities of the tools.

Docker alleviates the “it works on my machine” problem. By packaging an application and its runtime environment, Docker ensures consistent behavior across machines. This is especially useful for hackers

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