Hack This Site JavaScript Mission 7

Hack This Site JavaScript Mission 7 - JS Obfuscation. FTW!

There is No hint Given to us!All we have is the name
JS Obfuscation. FTW!

What this means?Obfuscation- the action of making something obscure, unclear, or unintelligible.

So clearly,it has some thing to deal with the JavaScript code.Lets find out.

As usual, I typed in something in the input box and hit "check password"

Got an alert "WRONG! Try again!"

Now , as usual we have to go for this in the source code.

Right click and select view page source (for chrome).In that search for

"WRONG! Try again!"

Wow! no code found!what will we do?don't worry! go back to our page and right click on check password and select inspect.Got the code below:

<button onclick="javascript:if (document.getElementById("pass").value=="j00w1n"){alert("You WIN!");window.location += "?lvl_password="+document.getElementById("pass").value}else {alert("WRONG! Try again!")}">Check Password</button>

You can see,Our input is being checked here,JavaScript is written here.

" is same as "

so document.getElementById("pass").value

Gets the value we give as input and checks it with "j00w1n"

that is "j00w1n"

So, Now you have the password.We Have Completed all the JavaScript challenges!

Comments

Hack This Site Basic 10

Please enter a password to gain access to level 10 Only this much is written as hint.What we should do? I have tried reading the source code and there is no hint how the password is validated.So,we have no other way than intercepting the data.Once we enter the password and hit submit the password along with some request is sent to the server by the browser.There can be very vital information in this request.What we do is intercept this request before it is sent to the server.For this we use "Burp Suit" or some extensions for tampering data.For chrome and firefox,we have tamper data addon.Iam using chrome add on: Tamper Chrome HOW TO USE IT? *Right click somewhere and select inspect. *Now select the three arrows pointing right on top right corner. *Now select Tamper from it(make sure you have added the extension in chrome). *Now input some password in out mission or leave it empty and hit submit. *You will see a new tab with the request det

Hack This Site Basic 6

Network Security Sam has encrypted his password. The encryption system is publically available and can be accessed with this form: There we have been given with the same encryptor used by Sam .There is no other choice in my mind than guessing the password with the help of this encryptor. We have Sam's encrypted password already :3ff8;j<9 >Now we need to find by giving which value we get the output as 3. >when i given 'a' my output was 'a',which means no change. >So,I tried giving '3' and as expected, answer was 3. >So i pushed my luck and tried '3f',the first two letters,in encryptor ,Output was '3g' this was clearly giving us hint.first letter has no change,second letter change by one alphabet or letter ,clearly from 'abcdefg' >with this in mind iam giving input for encryption as '3ed',Huraaah!, it was successful and given output as '3ff'. >now its easy to break down ...

Hack This Site Basic 8

Sam remains confident that an obscured password file is still the best idea, but he screwed up with the calendar program. Sam has saved the unencrypted password file in /var/www/hackthissite.org/html/missions/basic/8/ However, Sam's young daughter Stephanie has just learned to program in PHP. She's talented for her age, but she knows nothing about security. She recently learned about saving files, and she wrote a script to demonstrate her ability. So, we know the password is stored in some obscured password file. Lets try the same code as we did in level 7. But the code 'ls' is not treated as command. so lets try it differently. Try with aaa; it also failed but got a message: If you are trying to use server side includes to solve the challenge, you are on the right track: but I have limited the commands allowed to ones relevant towards finding the password file for security reasons(because there will always be that one person who decides to

M0N73 CRIS70

Search This Blog