Post on 26-Dec-2015
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8/28/2014 How Hackers Use Your IP Address to Hack Your Computer & How to Stop It « Null Byte
http://null-byte.wonderhowto.com/how-to/hackers-use-your-ip-address-hack-your-computer-stop-0130719/ 1/6
How Hackers Use Your IP Addressto Hack Your Computer & How toStop It
Your IP (Internet Protocol) address is your unique ID on the internet. It's
synonymous with your home address. Anyone in the world can contact your
computer through its IP address, and send a retrieve information with it.
I'm sure at one time or another you've heard that hackers can hack your
computer via your IP address. This is one of the reasons proxies and
anonymity services exist, to protect people from learning your IP address. So
how are hackers using just an address to get into your computer and make
your life hell?
Open ports. Your computer runs services like media sharing on what are
called ports. A port is just an opening that a service uses as a
communications endpoint. There are 65,535 total allocated ports in
TCP/UDP. To exploit a service on a port, a hacker would banner grab for the
software and version. After they learn that information, they would search
sites like Packet Storm for known exploits to run against the service.
Today's Null Byte is going to demonstrate a simple "port scan" on local
computer using Nmap, and teach how a hacker would exploit these services,
as well as how to guard ourselves against it. This will be done under Linux,
but Nmap is available for all platforms. If you can't figure out how to install it
in Windows with the GUI installer (yeah, right), follow along using Cygwin.
Bold words are commands that must be entered in a terminal emulator.
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Step 1 Download & Install Nmap
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8/28/2014 How Hackers Use Your IP Address to Hack Your Computer & How to Stop It « Null Byte
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First, we must download Nmap, which is going to be our tool that we use for
port scanning and information gathering:
wget http://nmap.org/dist/nmap-5.51.tar.bz2
Now, extract the archive:
tar -zxvf nmap-5.51.tar.bz2
Change to the newly made directory:
cd <directory name>
This is the standard installation procedure:
./configure
make && sudo make install
Nmap should now be installed!
Let's scan a local computer. I'm going to use a website as an example, rather
than a local computer. This is because my firewall is absolutely crazy, and
filters out scans. Don't scan a remote computer with the intentions of doing
bad deeds. This is for educational purposes only.
Start by mapping out your local network:
sudo nmap -sP 192.168.1.0/24
That should return a list of hosts that are up for a port scan!
Out of the returned list of targets, pick one that you would like to scan for
services. Let's do a full scan of all the TCP/UDP ports:
sudo nmap -p 1-65535 -T4 -A -v <target IP goes here>
You should get something that looks like the following image:
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Step 2 Scan for a Target
Step 3 Scan Your Individual Target
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8/28/2014 How Hackers Use Your IP Address to Hack Your Computer & How to Stop It « Null Byte
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REDOUANEHAMMOU
1
1 year ago Reply
thnks my frnd the infrmat:°
1
1 year ago Reply
do you have free hacker program ?
Subscribe
As you can see, this target has MANY open ports. SSH piques my interest, so
let's move on to banner grabbing to learn the software version or our choice
of service.
For this, you can use the regular ol' telnet client. Telnet comes with Windows
and most Linux distros:
telnet <host IP> <port banner to grab>
From this, I would learn which software version the service is running, then
see if I can find a way to exploit it.
Luck for all of you lovely people, I recently made a tutorial on iptables, which
will filter out unwanted connections. Also, disable any unnecessary programs
that connect to the internet (remote administration, media sharing, etc).
Windows users, install Comodo firewall, it's incredible and uses a simple
point and click installation, and will filter ports for you. It has great default
settings and it is free.
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Step 4 Banner Grabbing
How Can I Protect Myself?
See Also
OFF
If u use the root app. Can u then use urphone as a hot spot? Please let me know.Thanjs
Even though i have not a clue, it was excitingto read your article but after glancing downand reading these comments my brain hurts!
THANK YOU VERY MUCH. YOU SAVED MYPHONE AFTER ROOTING HIM. THANK YOUVERY MUCH. GOOD BLEESS YOU
This anti-rinsing campaign is getting well outof hand and is bordering on the kinds oflunacy usually found only in UCB (universityof california at berkeley) where theprofessors there suggested ...
8/28/2014 How Hackers Use Your IP Address to Hack Your Computer & How to Stop It « Null Byte
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CHEVANZKO RIEGOLEVATORE
OMARKHAMIS
1
6 months ago Reply
you are noob bitch the only noob say do u have hacker program
if u want to be hacker...
1 first get ICDL
2 learn more about c++
3 learn windows commands 7,8,xp
4 and also learn small lunix commands for nobody say to you im a hacker
and tell you lunix commands and u dont it
exploits/pentest
5 if u used c++ you can make a hacker programm for you only or make a
groupe .. use windows command and c++ lunix commands every thing
and upload it to your friends that know about ICDL or computer
commands
LOVEMANIA
1
1 year ago Reply
i know the ip address of that computer i want to hack... lz tell me how can i...
i want to hack my frnd computer. he has given me a permission to hack his
computer.
LIAMFRASER
1
1 year ago Reply
how do u down load it
JOSHUABARNES
1
1 year ago Reply
Is there anyway you could post an after pic of the telnet service after you run
it? PM me with it if you want
MORGANBEJI
1
8 months ago Reply
i do not get any banner after connecting to the host
and can not find where to put the username and password
OCCUPYTHEWEB
1
8 months ago Reply
Morgan:
The banner will only appear if there is a web server running like IIS or
Apache.
OTW
OMERATICI
1
7 months ago Reply
how to hack ip address ?
OCCUPYTHEWEB
1
7 months ago Reply
Omer:
Welcome to our community of hackers here at Null Byte!
Do you have BackTrack installed? If so, Metasploit is included and you can
use it to hack.
OTW
1 hi, i dont if there's any related post about what i'm looking for but what if i
want to access my home computer by another computer in another network.
8/28/2014 How Hackers Use Your IP Address to Hack Your Computer & How to Stop It « Null Byte
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JESSICATHEDOC
4 months ago Reply
Thanks anyway
OCCUPYTHEWEB
1
4 months ago Reply
Jessica:
If you enable RDP on your home computer you can access it remotely.
OTW
ILYASKHAN
1
4 weeks ago Reply
this site software is very wonder full.......
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