Penetration testing or pen testing is types of security testing where cyber security specialists find out the vulnerabilities in a computer system, network or software application that an attacker can exploit. In this post, we will focus on the steps for penetration testing and required tools and techniques for penetration testing of an organization.
The main purpose of penetration testing is to identify the all security vulnerabilities of a system such as application, network, servers, computer,firewalls, etc.
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Steps for Penetration Testing
To accomplish the penetration testing of a system, there need some sequential steps. So, the steps for penetration testing are as follows:
Evidence collection and report generation
Now, we will discuss each type of penetration testing steps, so every organization can be arrange for this type of security testing.
Planning is the first steps for penetration testing. In this step, the client (organization) and the penetration testers clearly define logistics, expectations and objectives of the test.
During this planning phase, the penetration testers work with your organization to understand your business, technical details and security risks.
The penetration testers also address the testing tools and techniques which will use in penetration testing period.
In this article, we have mentioned some best penetration testing tools which will use by penetration tester.
In this phase, penetration tester’s main focus is to collect much information about the target system such as application architecture, development platform, DNS, operation system, open ports, IP address, network topology, server, and security devices.
If a pentester knows the details information about the target, then he/she can easily find out the vulnerabilities of a system.
It is noted that, an expert hacker will spend maximum time in this phase because these sensitive information is very helpful to hack the system.
This is very important step of penetration testing where a penetration tester scans the target system for discovering vulnerabilities using automated tools and techniques.
This phase scan the various target system such as a network and web application.
For example, Nmap, short for Network Mapper is a scanning tool which is used to discovering the vulnerabilities or security holes in the network environment. A penetration tester or network administrator does the following job using Nmap tools.
To detect the which operating system running on network
To identify which devices are running such as servers, routers and switches.
To find out the open ports of your system
And detect any specific vulnerabilities or risks.
Now, for web application, the scanning can be either static or dynamic.
Static analysis is the process of find out the vulnerable functions within the code, detecting errors, libraries and logic that have implemented in application.
The main aim of static analysis is identify the weaknesses within source code before running an application. This can be done by manual process but using automated tools is much more effective.
There are various automated tools of static code analysis. Here are the top 10 Static Code Analysis Tools for Java, C++, C# and Python:
The testers try to exploit these vulnerabilities and gaining access to the target for stealing data and flooding the target with traffic.
Typically, the target can be an application, firewall or a server.
5. Maintaining Access
The next stage of penetration testing is ensuring that the access is maintained such as persistence presence. The penetration tester gain access into your system in order to find out the vulnerabilities.
It is very important that the penetration testers need to maintain continued access to your system even if the system is rebooted, reset or modified.
The persistent threats are used by attackers who live into your system for long periods of time to steal your sensitive information.
Exploitation is the very significant steps for penetration testing where the actual damage is done by attacker.
Once the vulnerabilities have been identified, the pentester proceed to exploit the system and try to access data and or damage the system.
The penetration tester will use different types of techniques to exploit those vulnerabilities in order to gain access to the target systems.
It is noted that, in penetration testing, the majority pentesters use the dummy flag technique when functioning with important data.
7. Evidence Collection and Report Generation
After completion of all above steps, the final step is to collect evidence of the exploited vulnerabilities and report submission to the organization head for review and necessary action.
Now, it is the time for management’s decision on how this vulnerabilities or risk has to be addressed.
If the management’s don’t take any action or ignoring these risks, then the system will be vulnerable, that means the system is not secure and will be targeted by attackers.
The report will include the following information:
Overall summary of penetration testing and details of each step
Information gathered during the pen testing
All the vulnerabilities exploited during the test
Accessed of sensitive data during the test
Important suggestions for ensure security.
Tools and Techniques of Penetration Testing
During the penetration testing steps, a pentester will use several types of tools to exploit the target. Here is the list of a few top tools that a tester can use to conduct this test.
Metasploit is an open-source software framework and most powerful tools which are used for penetration testing. And the framework contains a set of a tool that use to test security vulnerabilities and hacking into systems.
Nmap is a scanning tool which used to discovering the vulnerabilities or security holes in the network environment.
3. Kali Linux
Kali Linux is a Debian-based Linux distribution which used for penetration testing, ethical hacking and network security assessments.
w3af is a web application attack and audit framework that used secure web applications by finding and exploiting vulnerabilities.
Sqlmap is an open source penetration testing tool which can detect and exploit SQL injection attack in your system’s database.
Netsparkeris an automated web application security scanner that scans websites, web applications and web services, and identifies security holes.
Nessus is an open-source network vulnerability scanner that identifies threat and network configuration issues.
8. Burp Suite
Burp Suite is an integrated security testing web applications platform which used for penetration testing of web applications.
Why Penetration Testing?
The main of penetration testing is to identify vulnerabilities and security risks in your system. So, you can protect your system from cyber attacker. However, here is the top reason why penetration testing is required:
To find out security vulnerabilities in an application.
To discover security holes in the system.
To discover new bugs in existing system (i.e., application or network)
To secure user sensitive information.
To secure financial and business data of an organization.
To protect form cyber security attack.
To ensure confidentiality, integrity, and availability of the data.
To implement information security strategy in the organization.
Finally, we have tried to define the each steps for penetration testing of a system and also mentioned the some best tools for penetration testing.