Protect against SQL Injection

There are more ways.. 1 of them is-

with blocking the SQL commands

function mysqlesc($input) { 

$input = str_ireplace('\'', '', $input);

$input = str_ireplace('"', '', $input);

$input = str_ireplace('UNION', '', $input); 

$input = str_ireplace('--', '', $input); 

$input = str_ireplace('/**/', '', $input); 

$input = str_ireplace('/*', '', $input); 

return $input; }

another protecting method is:

function mysqlesc($input){
$input = mysql-real-escape-string($input);

return $input;
}

Common Methods for Hacking

Common Methods for Hacking :
This comprises of either taking control over terminal(or Server) or render it useless or to crash it.. following methods are used from a long time and are still used..

1. Denial of Service -
DoS attacks give hackers a way to bring down a network without gaining internal access. DoS attacks work by flooding the access routers with bogus traffic(which can be e-mail or Transmission Control Protocol, TCP, packets).

2. Distributed DoSs -
Distributed DoSs (DDoSs) are coordinated DoS attacks from multiple sources. A DDoS is more difficult to block because it uses multiple, changing, source IP addresses.

3. Sniffing -
Sniffing refers to the act of intercepting TCP packets. This interception can happen through simple eavesdropping or something more sinister.

4. Spoofing -
Spoofing is the act of sending an illegitimate packet with an expected acknowledgment (ACK), which a hacker can guess, predict, or obtain by snooping

5. SQL injection -
SQL injection is a code injection technique that exploits a security vulnerability occurring in the database layer of an application. It uses normal SQL commands to get into database with elivated privellages..

6. Viruses and Worms -
Viruses and worms are self-replicating programs or code fragments that attach themselves to other programs (viruses) or machines (worms). Both viruses and worms attempt to shut down networks by flooding them with massive amounts of bogus traffic, usually through e-mail.

7. Back Doors -
Hackers can gain access to a network by exploiting back doors administrative shortcuts, configuration errors, easily deciphered passwords, and unsecured dial-ups. With the aid of computerized searchers (bots), hackers can probably find any weakness in the network.

So, not interested in these stuffs.. huh??? wait there is more for you.. So, how about the one related to hacking the passwords of email and doing some more exciting stuffs.. The various methods employed for this are:

8. Trojan Horses -
Trojan horses, which are attached to other programs, are the leading cause of all break-ins. When a user downloads and activates a Trojan horse, the software can take the full control over the system and you can remotely control the whole system.. great..!!! They are also reffered as RATs(Remote Administration tools)

9. Keyloggers -
Consider the situation, everything you type in the system is mailed to the hacker..!! Wouldn't it be easy to track your password from that.. Keyloggers perform similar functionallities.. So next time you type anything.. Beware..!! Have already posted about keyloggers and ways to protect yourself from them..

10. BruteForcing -
The longest and most tiring job.. don't even consider this if you don't know the SET of password for your victim..

11. Secret Question -
According to a survey done by security companies, it is found that rather than helping the legitimate users the security questions are more useful to the hackers.. So if you know the victim well try this..

12. Social Engineering -
Ya this was one of the oldest trick to hack.. Try to convince your user that you are a legitimate person from the system and needs your password for the continuation of the service or some maintainence.. This won't work now since most of the users are now aware about the Scam.. But this Social Engginering concept is must for you to have to convince victim for many reasons..!!!

13. Phishing -
This is another type of keylogging, here you have to bring the user to a webpage created by you resembling the legitimate one and get him to enter his password, to get the same in your mail box..!! Use social engginering..

14. Fake Messengers -
So its a form of phishing in the application format.. getting user, to enter the login info in the software and check your maill..!!!

15. Cookie Stealer -
Here the cookie saved by the sites are taken and decoded and if you get lucky.. You have the password..!!!

Hmmm.. not satisfied with single account at a time..?? so there are ways to hack lots of accounts together.. I know few but there exists many..!! listed are the ones i know and will teach you in coming posts...

16. DNS Poisoning or PHARMING -
So, phisihing is a tough job.. isn't it..?? convincing someone to enter their password at your page..?? what if you don't have to convince..?? what if they are directed automatically to your site without having a clue..?? Nice huh..?? Pharming does the same for you.. More about it in my next post..

17. Whaling -
This method gets you the password of the accounts which are used by the hackers to recive the passwords.. So you just have to hack one ID, which is simplest method( Easy then hacking any other account, will tell you how in coming posts..) and you will have loads of passwords and so loads of accounts at your mercy..!!!

This is for Educational Purpose only........

How to get a list of emails every day! with METASPLOIT

How to get a list of emails every day! with METASPLOIT

1 - First of all open your Metasploit console

2 - search gather 

3 - use gather/serach_email_collector

then show options

4 - in this case we will try to find a list of emails, from Hotmail
set domain hotmail.com
run



5- Here The Result


PS : Another test with the domain Yahoo

Defence against SQL injection

GPC, 3 ways of authentication.
G- GET, P – POST and C – Cookie.

Hackers, often use GET method to inject their “union+select+” queries or POST method from one server to another, if authentication has javascript filtering using their OR 1=1 method and the last but not the least, cookies. Cookies are used by very few hackers, however with the use of session cookies, their successful attempts are limited to minimum.
addslashes() is one of the function that a developer can use if !(get_magic_quotes_gpc). But, adding this line can be troublesome in most cases, where amount of variables are really high, it may make the code look sluggish to have mysql_real_escape_string() in every variable passed. To get rid of all these:
Go to your php.ini file and set:

magic_quotes_gpc = On

magic_quotes_gpc is by default set to Off for optimal performance of the server.

However, if you are using a shared/paid hosting and do not have access to php.ini file then add the following to your .htaccess file.

php_flag magic_quotes_gpc on

However, cannot promise that above mentioned “tweak” will work till eternity. You can never know what 0-day comes 

What is sql injection – Basic

What is SQL Injection?

• Google dorks? 
• Is my site vulnerable? 
• ORDER BY ?-- 
• UNION SELECT 
• VERSION() 
• Table_Name 
• Column_Name 
• Magic Quotes? 
• Extracting Data

What is SQL Injection?

SQL Injection (Or SQLi for short) is a method of code injection into Structured Query Language (SQL) databases. It exploits a security issue where a user's input is not correctly filtered, usually due to poorly coded query language interpreters.
Consider this code:
The above statement selects the specified "user" from the "members" table. Do you see any problems with this? Consider the following input as a username:
When the database tries to pull up records of that username, this is the resulting query:
Now, as you can see, the username is actually completely blank contained within the '', but the following OR statement will return true, as 'x' always = 'x'. Due to this problem of incorrectly filtering database queries, the hacker can input his/her own malicious code.

The above was just one example of SQL Injection, what we will be learning in this tutorial, is integer based SQL Injection using the ORDER BY and UNION SELECT queries.

Googe Dorks?

Before we get started on the rest of the tutorial, you will need to know what a Google dork is, and no, it's not the kind of dork you are thinking of!
A google dork is a small search phrase done by the hacker to find sites vulnerable to SQL Injection. Usually this search term will be very small and it will look for specific lines of text within the webpage or in the URL. I've included some here as a start:
Is my site vulnerable?

Now after you have found a site using a Google dork you need to check if it is vulnerable to integer based SQL Injection. To do this, it's simple. All you need to do is add an apostrophe ( ' )to end of the URL. You should get an error similar to this back:

If you get this error, it usually means your site is vulnerable!

ORDER BY x--

Our first step to accessing the database, will to be find how many columns there are in the site. To do this, we use the ORDER BY x-- query (x being an integer variable). Example:

We want to keep increasing "x" until we get back an error. So why? Imagine our database has 4 columns, if we try to order by the 5th, it can't access it. It doesn't exist. So if we get an error on ORDER BY 5--, it means we have 4 columns. Here is an example:
We can now determine the site has 4 columns.

UNION SELECT

We use the union select statement to combine the results of multiple querys in our SQLi. To test if it works, go to our sites normal URL, and write "UNION SELECT 1,2,3,4--" (without quotes) after it. In our example, we use "1,2,3,4--", but on other sites, you will usually have a different number of columns. Example: On a site with 5 columns it would be "union select 1,2,3,4,5--".
You have probably noticed several numbers have appeared on the page. This is the vulnerable columns we are going to use for our SQLi. In our example, column 3 is vulnerable. You have also probably noticed I have replaced id=5 with id=-5. The reason for this is that sometimes our query on the page will be covered up by text or images, making it hard to find, or only viewable in the source code. To bypass this, we try to get the site to call a non-existing page (id=-5, there are no pages with the ID of -5). Usually this will result in the page being cleared of all text and images. If it doesn't work, just remove the - and continue on as normal.

VERSION()

This will be one of the easier things to do and understand, the name of the query itself is self explanatory. After we have tested UNION SELECT (and it works) we simply input VERSION() into one of the vulnerable columns in our URL, example:
We had 4 columns in our example and the vulnerable column was number 3. We have replaced the number 3 with VERSION(). You should now see the SQL version of the database. This tutorial will only deal with Integer based injection on SQL version 5 and above.

If our target has a version over 5, continue reading, if not, you need to find a new target or read a different tutorial.

Table_name

Now we are going to get into the tables. This is where all the information you are looking for will be kept, but first, we need to find the table names. To do so, replace VERSION() with group_concat(table_name). Then after your last column number, add "from information_schema.tables--". Example:
What this code is doing, is combining the queries of column 1,2,3 and 4. In column 4, it is selecting all possible table names. These queries are then taken from information_schema.tables. You should now see a list of all table names on the screen.

Column_name

To find the column names we do the same thing, but replace tables with columns, but we include which table to get the column names from. What we want to use is a table which seems like it would include some good information, for our example, we are going to say we found the table "admin". Example:
Here, as before, we are combining the queries of 1,2,3 and 4. In column 3 we are requesting all of the column names from information_schema.columns, but this time only from where the table_name is equal to "admin". Otherwise we would get the name of every column in the database, and this would just take much longer to go through.

Magic Quotes?

One common problem when completing the Column_Name stage is that they still recieve an error. This can be frustrating to those new to SQL Injection, so I'm going to cover the reason for this.

The problem here, is that the admin of the site has attempted to outsmart you by using "Magic Quotes". What this does, is it only allows you to select from the table if the table_name is in hex. You can convert your table name to hex by going here: http://www.swingnote.com/tools/texttohex.php

Our query will now look like this:
You have most likely noticed that if you convert our plaintext column name into hex, the 0x isn't shown. The 0x is something we put in ourselves, which tells the site that the following text is going to be in hex.

Extracting Data

To finish off, we need to extract the data from the columns we have chosen. Once we found out the column_names, we can then use them in our group_concat() query to get exactly what we have been looking for. In our example, we will have found the column names "username", "password" and "email.

This query extracts the usernames, passwords and emails from the admin table. Remember I told you what 0x does? Well you will notice it again in our last query. 0x3a is the hex code for a colon ( : ). It is used so we can seperate our results easier, by doing this, we will get returned the following:

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