Collection of DOS attack tools

DOS attack is also known as Denial Of Service attack in which attacker make the resource unavailable from the legit users. This attack is performed by flooding server request queue with false requests so that no valid user can request on the server. Thus server down. If we take a look on the biggest cyber attack of past few months, DOS attack was main. DOS attack is even more powerful when it is performed by the number of systems on the same server. When many systems performs DOS attack on the same server, this attack is known as DDOS attack. This attack is most powerful attack and hard to prevent when performed by multiple systems. There are various tools available on the internet which can be used to attack on the server. 


This is the list of some popular DOS attacking tool.

• RDOS
• LOIC
• TEV DOS
• RefRef
• DDOSIM

These are some popular and easy to use tool to perform the DDOS attack on the servers.

How to crash a small website using DOS attack

Have you ever wanted to DOS attack on a website. Here I am going to write about a tool which is really helpful but it wouldn't be effective on big servers. 


NOTE: Please do not try to this tutorial to harm any other's website. I will not be responsible in any case. If you are not agree, please leave this website without reading further tutorial


for cool computer tricks click here

You need:

1. Port Scanner Download Here
2. rDOS Download Here
3. Ip Hiding tool Download Here

Follow these steps:

1: First of all you need to know the IP address of the website you want to crash.
Use ping command in windows to get the ip address of the website.
open CMD and enter ping www.website.com
see the snap

Now you have the IP address of the website.

2: Now use Port scanner to check whether PORT 80 is open or not. If PORT 80 is not open choose another website to hack :P

otherwise you can crash this website.

3: Now open your  rDos. Enter your victims ip that you got from step 1.

It will ask you for the port to attack use port 80 that’s why we scanned to make sure that 80 was open! If it is closed it will not work.

comment if you have any problem

DOS Attack

A denial of service (DoS) attack is an attack that clogs up so much memory on the target system that it can not serve it's users, or it causes the target system to crash, reboot, or otherwise deny services to legitimate users.There are several different kinds of dos attacks as discussed below:-

1) Ping Of Death :- The ping of death attack sends oversized ICMP datagrams (encapsulated in IP packets) to the victim.The Ping command makes use of the ICMP echo request and echo reply messages and it's commonly used to determine whether the remote host is alive. In a ping of death attack, however, ping causes the remote system to hang, reboot or crash. To do so the attacker uses, the ping command in conjuction with -l argument (used to specify the size of the packet sent) to ping the target system that exceeds the maximum bytes allowed by TCP/IP (65,536).
example:- c:/>ping -l 65540 hostname
Fortunately, nearly all operating systems these days are not vulnerable to the ping of death attack.

2) Teardrop Attack :- Whenever data is sent over the internet, it is broken into fragments at the source system and reassembled at the destination system. For example you need to send 3,000 bytes of data from one system to another. Rather than sending the entire chunk in asingle packet, the data is broken down into smaller packets as given below:
* packet 1 will carry bytes 1-1000.
* packet 2 will carry bytes 1001-2000.
* packet 3 will carry bytes 2001-3000.
In teardrop attack, however, the data packets sent to the target computer contais bytes that overlaps with each other.
(bytes 1-1500) (bytes 1001-2000) (bytes 1500-2500)
When the target system receives such a series of packets, it can not reassemble the data and therefore will crash, hang, or reboot.
Old Linux systems, Windows NT/95 are vulnerable.

3) SYN - Flood Attack :- In SYN flooding attack, several SYN packets are sent to the target host, all with an invalid source IP address. When the target system receives these SYN packets, it tries to respond to each one with a SYN/ACK packet but as all the source IP addresses are invalid the target system goes into wait state for ACK message to receive from source. Eventually, due to large number of connection requests, the target systems' memory is consumed. In order to actually affect the target system, a large number of SYN packets with invalid IP addresses must be sent.

4) Land Attack :- A land attack is similar to SYN attack, the only difference being that instead of including an invalid IP address, the SYN packet include the IP address of the target sysetm itself. As a result an infinite loop is created within the target system, which ultimately hangs and crashes.Windows NT before Service Pack 4 are vulnerable to this attack.

5) Smurf Attack :- There are 3 players in the smurf attack–the attacker,the intermediary (which can also be a victim) and the victim. In most scenarios the attacker spoofs the IP source address as the IP of the intended victim to the intermediary network broadcast address. Every host on the intermediary network replies, flooding the victim and the intermediary network with network traffic.
Result:- Performance may be degraded such that the victim, the victim and intermediary networks become congested and unusable, i.e. clogging the network and preventing legitimate users from obtaining network services.

6) UDP - Flood Attack :- Two UDP services: echo (which echos back any character received) and chargen (which generates character) were used in the past for network testing and are enabled by default on most systems. These services can be used to launch a DOS by connecting the chargen to echo ports on the same or another machine and generating large amounts of network traffic.