Is it possible to hack whats app?

Answer :-

Method 1 :-

MAC Spoofing 

1. Uninstall WhatsApp from your phone or device. You'll install  it again at the end of the method, but you'll need to  configure it  differently, and the easiest way to make sure you'll be  able to do that  correctly is to completely uninstall it now. 
2. Obtain your target's phone. You'll need it for two different  steps throughout the process, but  this shouldn't take too long - you  should be able to return it before  your target starts to miss it. 
3. Find your target's phone's Media Access Control (MAC) address. A MAC address is a unique identifier assigned to your phone or other   device that essentially serves as its online identity. Find and write   down your target's MAC address. It takes the form of six pairs of   letters or numbers, separated by colons (01:23:45:67:89:ab). 

  • On      an Android, find this in Settings → About phone → Status → Wi-Fi MAC      address.
  • On      an iPhone, go to Settings → General → About → Wi-Fi Address.
  • On a      Windows phone, look in Settings → About → More info → MAC address.
  • On a      BlackBerry, go to Options → Device → Device and Status info → WLAN MAC.

4. Find your MAC address using the instructions above. Make sure to save it somewhere secure, as you'll want to change your device back to that address once you're done. 
5. Change ("spoof") your phone's MAC address to that of your target. This will allow your phone to pass as your target's, letting you convince WhatsApp that you are your target when you log in. 

  • On        an iPhone or other device, install a MAC spoofing app like  MacDaddy X  or      WifiSpoof. Use that to change your MAC address.
  • On        Android, install BusyBox and the Terminal Emulator (apps available   for      free on Google Play). In the terminal, type "ip link show"  to       see a list of interfaces. Identify the one that has your MAC   address --      for this example, we'll use the eth0 interface. In the   terminal emulator,      enter "ip link set eth0 address   XX:XX:XX:XX:XX:XX" and "ip      link set eth0 broadcast   XX:XX:XX:XX:XX:XX", where eth0 is the      interface you identified and   XX:XX:XX:XX:XX:XX is your target's MAC      address. To check that   you've successfully changed your MAC address,      enter "ip link show   eth0."
6. Install and configure WhatsApp on your phone.  Enter your  target's phone number to set up WhatsApp rather than your  own. This will  allow you to receive their messages and send messages  from their  account. 
7. Get the confirmation code from your target's phone. This code  will be sent to their phone number as part of the WhatsApp  configuration  process. Access their phone one last time to get that  verification  code. Enter it into WhatsApp on your phone when prompted,  and you're all  ready to go. 

  • If       you don't  want your target to find out about your spoofing, make  sure to       delete the confirmation code from their phone before they  can see it.
8. When you no longer need to access your target's WhatsApp account, change your MAC address back to what it was. Repeat the instructions to change it, but this time change it to your   original address rather than your target's. This will restore your  phone  to how it was originally, which will ensure that there are no  future  problems with Internet usage or connectivity.

Method 2:-

Hacking doesn't seem to be miracle, It is just a part of  a trick, nowadays the application themselves give you many features that can be misused , Like For whats app It comes with an option of what app web I think that is the most simple way to get access to someone's whats app
Just borrow a phone of your target open his or her whats app
In your computer go to url WhatsApp Web
From phone just scan the code and guess you are in
This is amazing trick
1.You can download software like bluestack or youwaves in your system
It is just a tool to run android app on windows
2. Install whats app.apk in it
3.  While configuring whats app provide the target number and select verification via call option
4. Switch off your phone and ask your target that I have to take a urgent call from UK and I have shared your number mine phone is dead.
5. Target will get a automation call with UK number
6. Enter a verification code n you are in
For this trick take help of your friend who will perform all action in background and you have to be with target to get a call.