Hacking without telnet

Note: This is for educational purposes Only. I will give you warning that I am not responsible for anything that might happen to you if you try to hack any computer.

Step 1: Go to the Command Prompt and type Telnet [ip address] [port] then enter. Example: Telnet Step 2: After this you entered in the system.

This network attack requires very little expertise and can be performed with network debugging tools that are readily available. Packet sniffing attacks like the above were the underlying reason for developing SSH, and they were the most common security problem on the Internet already in the mids.

Today mass monitoring and mass collection of credentials from the Internet by intelligence agencies, criminals, and hackers is routine. The figure below presents a sample mock attack on an unprotected network protocol such as Telnet. Without encryption the data communications can be read by anyone that has access to the network packet stream. Keep in mind there are people a bit more knowledgeable than you who protect these systems for a living. Once found, they sometimes monitor intruders to let them incriminate themselves first before legal action is taken.

This means you might think you have free access after hacking into a system, when in fact, you're being watched and may be stopped at any moment. Helpful 1 Not Helpful 0. Hackers are those who built the Internet, made Linux, and work on open-source software.

It's advisable to look into hacking as it's quite respected and requires a lot of professional knowledge to do anything serious in real environments. Helpful 0 Not Helpful 0. Keep in mind, if your target is not doing their best to keep you out, you won't ever become good. Of course, don't get cocky. Don't think about yourself as the best of the best. Make this your goal: you must become better and better. Every day that you didn't learn something new is a wasted day.

You are all that counts. Become best, at any cost. There are no half-ways. You must give fully of yourself. As Yoda would say, "Do or do not. There is no try. There is a major difference between a hacker and a cracker. A cracker is motivated by malicious namely: earning money reasons, while hackers attempt to retrieve information and gain knowledge through exploration - "bypassing security". Don't delete entire logfiles.

Instead, just remove only the incriminating entries from the file. The other question is, is there a backup log file?

What if they just look for differences and find the exact things you erased? Always think about your actions. The best thing is to delete random lines of the log, including yours. Helpful 4 Not Helpful 0. Never do anything just for fun. Remember it's not a game to hack into a network, but a power to change the world.

Don't waste that on childish actions. Helpful 10 Not Helpful 3. If you aren't confident with your skills, avoid breaking into corporate, government, or military networks. Even if they have weak security, they could have a lot of money to trace and bust you. If you do find a hole in such a network, it's best to hand it to a more experienced hacker that you trust who can put these systems to good use.

Helpful 7 Not Helpful 2. This article is intended to be informational and should only be used for ethical - and not illegal - purposes. Helpful 3 Not Helpful 0. Be extremely careful if you think you have found a very easy crack or a crude mistake in security management. A security professional protecting that system may be trying to trick you or setting up a honeypot. Helpful 4 Not Helpful 3. Hacking into someone else's system may be illegal, so don't do it unless you are sure you have permission from the owner of the system you are trying to hack and you are sure it's worth it.

Otherwise, you will get caught. Helpful 2 Not Helpful 2. Although you may have heard the opposite, don't help anyone patch their programs or systems. This is considered extremely lame and leads to being banned from most hacking communities. If you would release a private exploit someone found, this person may become your enemy. This person is probably better than you are. Helpful 1 Not Helpful 1. You Might Also Like How to. How to. About This Article. Co-authored by:.

Co-authors: Updated: January 6, Article Summary X 1. Italiano: Hackerare. Deutsch: Einen Computer "hacken". Bahasa Indonesia: Meretas. Nederlands: Hacken. Thanks to all authors for creating a page that has been read 10,, times. Hacking isn't always a a notorious play, it may be many times a knowledge giving act also. Hacking isn't learned, it is practiced daily. More reader stories Hide reader stories. Is this article up to date? Cookies make wikiHow better. By continuing to use our site, you agree to our cookie policy.

Pranav Sharma Dec 27, Andrea P. Jun 6, I may add, I have been trying to code, but it is hard doing it alone at home with the sites I have found. Ahishakiye Obed Sep 17, He has reinvented himself as a journalist and has carved a niche for himself in this field.

Botnets are used to send spam or make denial of service attacks. It tries different combination of usernames and passwords, over and over again, until it gets in. It is used by gray and black hat hackers to record login IDs and passwords. Keyloggers are usually secreted onto a device using a Trojan delivered by a phishing email. The most common version is the time bomb.

XSS enables attackers to inject client-side script into web pages viewed by other users. Nmap stands for Network Mapper. It is an open source tool that is used widely for network discovery and security auditing. Nmap was originally designed to scan large networks, but it can work equally well for single hosts. Network administrators also find it useful for tasks such as network inventory, managing service upgrade schedules, and monitoring host or service uptime.

Metasploit is one of the most powerful exploit tools. Matasploit can be used with command prompt or with Web UI. Burp Suite is a popular platform that is widely used for performing security testing of web applications. It has various tools that work in collaboration to support the entire testing process, from initial mapping and analysis of an application's attack surface, through to finding and exploiting security vulnerabilities.

Burp is easy to use and provides the administrators full control to combine advanced manual techniques with automation for efficient testing. Burp can be easily configured and it contains features to assist even the most experienced testers with their work. Angry IP scanner is a lightweight, cross-platform IP address and port scanner.

It can scan IP addresses in any range. It can be freely copied and used anywhere. In order to increase the scanning speed, it uses multithreaded approach, wherein a separate scanning thread is created for each scanned IP address. Ettercap stands for Ethernet Capture. It is a network security tool for Man-in-the-Middle attacks. It features sniffing of live connections, content filtering on the fly and many other interesting tricks. Ettercap has inbuilt features for network and host analysis.

It supports active and passive dissection of many protocols. EtherPeek is a wonderful tool that simplifies network analysis in a multiprotocol heterogeneous network environment. EtherPeek is a small tool less than 2 MB that can be easily installed in a matter of few minutes. EtherPeek proactively sniffs traffic packets on a network. SuperScan is a powerful tool for network administrators to scan TCP ports and resolve hostnames.

QualysGuard is an integrated suite of tools that can be utilized to simplify security operations and lower the cost of compliance. It delivers critical security intelligence on demand and automates the full spectrum of auditing, compliance and protection for IT systems and web applications.

WebInspect is a web application security assessment tool that helps identify known and unknown vulnerabilities within the Web application layer. It can also help check that a Web server is configured properly, and attempts common web attacks such as parameter injection, cross-site scripting, directory traversal, and more. LC4 was formerly known as L0phtCrack.

It is a password auditing and recovery application. It is used to test password strength and sometimes to recover lost Microsoft Windows passwords, by using dictionary, brute-force, and hybrid attacks. LC4 recovers Windows user account passwords to streamline migration of users to another authentication system or to access accounts whose passwords are lost.

LANguard Network Scanner monitors a network by scanning connected machines and providing information about each node. You can obtain information about each individual operating system.

It can also detect registry issues and have a report set up in HTML format. For each computer, you can list the netbios name table, current logged-on user, and Mac address. Network stumbler is a WiFi scanner and monitoring tool for Windows. It allows network professionals to detect WLANs.

It is widely used by networking enthusiasts and hackers because it helps you find non-broadcasting wireless networks. Network Stumbler can be used to verify if a network is well configured, its signal strength or coverage, and detect interference between one or more wireless networks.

It can also be used to non-authorized connections. ToneLoc stands for Tone Locator. War dialling is a technique of using a modem to automatically scan a list of telephone numbers, usually dialling every number in a local area code. Malicious hackers use the resulting lists in breaching computer security - for guessing user accounts, or locating modems that might provide an entry-point into computer or other electronic systems.

In this chapter, we will discuss some of the skills that you would require to become an expert in Ethical Hacking. Computer Hacking is a Science as well as an Art. Like any other expertise, you need to put a lot of effort in order to acquire knowledge and become an expert hacker.

Once you are on the track, you would need more effort to keep up-to-date with latest technologies, new vulnerabilities and exploitation techniques. An ethical hacker must be a computer systems expert and needs to have very strong programming and computer networking skills. An ethical hacker needs to have a lot of patience, persistence, and perseverance to try again and again and wait for the required result.

A good ethical hacker has great problem-solving skills too. This tutorial provides the basic guidelines to become a successful Ethical Hacker. It is recommended that you get some work experience as a Network Engineer and System Administrator to understand networks and systems inside out. Keep going through various books, tutorials and papers to understand various computer security aspects and take them as a challenge to secure your network and computer systems as network security engineer.

Study courses which cover creating Trojan horses, backdoors, viruses, and worms, denial of service DoS attacks, SQL injection, buffer overflow, session hijacking, and system hacking.

You need to stay as a White Hat Hacker which means you need to work within given boundaries. Never intrude or attack any computer or network without a required permission from the authorities. As a final note, it is highly recommended that you refrain from engaging yourself in black hat hacking which may spoil your entire career. Different security training manuals explain the process of ethical hacking in different ways, but for me as a Certified Ethical Hacker, the entire process can be categorized into the following six phases.

Reconnaissance is the phase where the attacker gathers information about a target using active or passive means. In this process, the attacker begins to actively probe a target machine or network for vulnerabilities that can be exploited. In this process, the vulnerability is located and you attempt to exploit it in order to enter into the system.

The primary tool that is used in this process is Metasploit. It is the process where the hacker has already gained access into a system. After gaining access, the hacker installs some backdoors in order to enter into the system when he needs access in this owned system in future. Metasploit is the preferred tool in this process. This process is actually an unethical activity. It has to do with the deletion of logs of all the activities that take place during the hacking process.

Reporting is the last step of finishing the ethical hacking process. Here the Ethical Hacker compiles a report with his findings and the job that was done such as the tools used, the success rate, vulnerabilities found, and the exploit processes.

The processes are not standard. You can adopt a set of different processes and tools according to your techniques that you are comfortable with. The process is of least significance as long as you are able to get the desired results. We will discuss in detail all these steps in the subsequent chapters of this tutorial. In this process, you will directly interact with the computer system to gain information.

This information can be relevant and accurate. But there is a risk of getting detected if you are planning active reconnaissance without permission. If you are detected, then system admin can take severe action against you and trail your subsequent activities. In this process, you will not be directly connected to a computer system.

This process is used to gather essential information without ever interacting with the target systems. Footprinting is basically the first step where hacker gathers as much information as possible to find ways to intrude into a target system or at least decide what type of attacks will be more suitable for the target.

In the following section, we will discuss how to extract the basic and easily accessible information about any computer system or network that is linked to the Internet.

It's always recommended to keep your domain name profile a private one which should hide the above-mentioned information from potential hackers. You can use ping command at your prompt. This command is available on Windows as well as on Linux OS. Following is the example to find out the IP address of tutorialspoint. Once you have the website address, you can get further detail by using ip2location.

Here the ISP row gives you the detail about the hosting company because IP addresses are usually provided by hosting companies only. If a computer system or network is linked with the Internet directly, then you cannot hide the IP address and the related information such as the hosting company, its location, ISP, etc.

If you have a server containing very sensitive data, then it is recommended to keep it behind a secure proxy so that hackers cannot get the exact details of your actual server. This way, it will be difficult for any potential hacker to reach your server directly.

Small sites may have a single IP address associated with them, but larger websites usually have multiple IP addresses serving different domains and sub-domains. You can enter company name in the highlighted search box to find out a list of all the assigned IP addresses to that company. You can enter a domain name in the search box to find out how the website was looking at a given point of time and what were the pages available on the website on different dates.

Though there are some advantages of keeping your website in an archive database, but if you do not like anybody to see how your website progressed through different stages, then you can request archive. In the following section, we have given an example to explain how you can use NMAP tool to detect the OS of a target domain.

Based on the sniffer traces such as Wireshark of the packets, you can determine the operating system of the remote host. By analyzing these factors of a packet, you may be able to determine the remote operating system.

Before attacking a system, it is required that you know what operating system is hosting a website. Once a target OS is known, then it becomes easy to determine which vulnerabilities might be present to exploit the target system. Below is a simple nmap command which can be used to identify the operating system serving a website and all the opened ports associated with the domain name, i.

You can go through nmap command in detail to check and understand the different features associated with a system and secure it against malicious attacks. You can hide your main system behind a secure proxy server or a VPN so that your complete identity is safe and ultimately your main system remains safe. We have just seen information given by nmap command. This command lists down all the open ports on a given server. Once a hacker knows about open ports, then he can plan different attack techniques through the open ports.

It is always recommended to check and close all the unwanted ports to safeguard the system from malicious attacks. A ping sweep is a network scanning technique that you can use to determine which IP address from a range of IP addresses map to live hosts. You can use fping command for ping sweep. This can be done using the following command which will create a firewall rule in iptable.

In fact, it is like a distributed database which is used to translate an IP address DNS enumeration is the process of locating all the DNS servers and their corresponding records for an organization. The idea is to gather as much interesting details as possible about your target before initiating an attack. You can use nslookup command available on Linux to get DNS and host-related information.

DNS Enumeration does not have a quick fix and it is really beyond the scope of this tutorial. Preventing DNS Enumeration is a big challenge. If your DNS is not configured in a secure way, it is possible that lots of sensitive information about the network and organization can go outside and an untrusted Internet user can perform a DNS zone transfer. There is so much possibility that if a set of enterprise switch ports is open, then one of their employees can sniff the whole traffic of the network.

Anyone in the same physical location can plug into the network using Ethernet cable or connect wirelessly to that network and sniff the total traffic. In other words, Sniffing allows you to see all sorts of traffic, both protected and unprotected.

In the right conditions and with the right protocols in place, an attacking party may be able to gather information that can be used for further attacks or to cause other issues for the network or system owner. A sniffer normally turns the NIC of the system to the promiscuous mode so that it listens to all the data transmitted on its segment.

Promiscuous mode refers to the unique way of Ethernet hardware, in particular, network interface cards NICs , that allows an NIC to receive all traffic on the network, even if it is not addressed to this NIC. By default, a NIC ignores all traffic that is not addressed to it, which is done by comparing the destination address of the Ethernet packet with the hardware address a.

MAC of the device. While this makes perfect sense for networking, non-promiscuous mode makes it difficult to use network monitoring and analysis software for diagnosing connectivity issues or traffic accounting.

A sniffer can continuously monitor all the traffic to a computer through the NIC by decoding the information encapsulated in the data packets.

In passive sniffing, the traffic is locked but it is not altered in any way. Passive sniffing allows listening only. It works with Hub devices. On a hub device, the traffic is sent to all the ports. In a network that uses hubs to connect systems, all hosts on the network can see the traffic. Therefore, an attacker can easily capture traffic going through.

The good news is that hubs are almost obsolete nowadays. Most modern networks use switches. Hence, passive sniffing is no more effective. In active sniffing, the traffic is not only locked and monitored, but it may also be altered in some way as determined by the attack.

Active sniffing is used to sniff a switch-based network. It involves injecting address resolution packets ARP into a target network to flood on the switch content addressable memory CAM table.

CAM keeps track of which host is connected to which port. This protocol is efficient, but it does not include any protection against sniffing. This protocol does not include protection against sniffing because it can be trapped. All the data is sent as clear text that can be easily sniffed.

Sniffers are not the dumb utilities that allow you to view only live traffic. If you really want to analyze each packet, save the capture and review it whenever time allows.