Implementing & Preventing SQL Injection Attacks Tutorial -2

In the previous post, we have seen a basic sql attack structure. In this site, we will understand - how to find sql attack vulnerable site. To find SQL vulnerable sites, we can use google. We search for a specific strings in google to get sites which are revealing some information about the site. Such strings are called 'Google Dorks'. After that, we will check whether the site is vulnerable or not.
Most of these Dorks are found in .php sites.

Some of the examples of Google Dorks: 

inurl:php?=id+gov
inurl:index.php?id=
inurl:trainers.php?id=
inurl:buy.php?category=
inurl:article.php?ID=
inurl:play_old.php?id=
inurl:declaration_more.php?decl_id=
inurl:pageid=
inurl:games.php?id=
inurl:page.php?file=
inurl:newsDetail.php?id=
inurl:gallery.php?id=
inurl:article.php?id=
inurl:show.php?id=
inurl:staff_id=
inurl:newsitem.php?num=
inurl:readnews.php?id=
inurl:top10.php?cat=
inurl:historialeer.php?num=
inurl:reagir.php?num=
inurl:Stray-Questions-View.php?num=
inurl:forum_bds.php?num=
inurl:game.php?id=
inurl:view_product.php?id=
inurl:newsone.php?id=
inurl:sw_comment.php?id=
inurl:news.php?id=
inurl:avd_start.php?avd=
inurl:event.php?id=
inurl:product-item.php?id=
inurl:sql.php?id=
inurl:news_view.php?id=
inurl:select_biblio.php?id=
inurl:humor.php?id=
inurl:aboutbook.php?id=
inurl:ogl_inet.php?ogl_id=
inurl:fiche_spectacle.php?id=
inurl:communique_detail.php?id=
inurl:sem.php3?id=
inurl:kategorie.php4?id=
inurl:news.php?id=
inurl:index.php?id=
inurl:faq2.php?id=
inurl:show_an.php?id=
inurl:preview.php?id=
inurl:loadpsb.php?id=
inurl:opinions.php?id=
inurl:spr.php?id=
inurl:pages.php?id=
inurl:announce.php?id=
inurl:clanek.php4?id=
inurl:participant.php?id=
inurl:download.php?id=
inurl:main.php?id=
inurl:review.php?id=
inurl:chappies.php?id=
inurl:read.php?id=
inurl:prod_detail.php?id=
inurl:viewphoto.php?id=
inurl:article.php?id=
inurl:person.php?id=
inurl:productinfo.php?id=
inurl:showimg.php?id=
inurl:view.php?id=
inurl:website.php?id=
inurl:hosting_info.php?id=
inurl:gallery.php?id=
inurl:rub.php?idr=
inurl:view_faq.php?id=
inurl:artikelinfo.php?id=
inurl:detail.php?ID=
inurl:index.php?=
inurl:profile_view.php?id=
inurl:category.php?id=
inurl:publications.php?id=
inurl:fellows.php?id=
inurl:downloads_info.php?id=
inurl:prod_info.php?id=
inurl:shop.php?do=part&id=
inurl:productinfo.php?id=
inurl:collectionitem.php?id=
inurl:band_info.php?id=
inurl:product.php?id=
inurl:releases.php?id=
inurl:ray.php?id=
inurl:produit.php?id=
inurl:pop.php?id=
inurl:shopping.php?id=
inurl:productdetail.php?id=
inurl:post.php?id=
inurl:viewshowdetail.php?id=
inurl:clubpage.php?id=
inurl:memberInfo.php?id=
inurl:section.php?id=
inurl:theme.php?id=
inurl:page.php?id=
inurl:shredder-categories.php?id=
inurl:tradeCategory.php?id=
inurl:product_ranges_view.php?ID=
inurl:shop_category.php?id=
inurl:transcript.php?id=
inurl:channel_id=
inurl:item_id=
inurl:newsid=
inurl:trainers.php?id=
inurl:news-full.php?id=
inurl:news_display.php?getid=
inurl:index2.php?option=
inurl:readnews.php?id=
inurl:top10.php?cat=
inurl:newsone.php?id=
inurl:event.php?id=
inurl:product-item.php?id=
inurl:sql.php?id=
inurl:aboutbook.php?id=
inurl:preview.php?id=
inurl:loadpsb.php?id=
inurl:pages.php?id=
inurl:material.php?id=
inurl:clanek.php4?id=
inurl:announce.php?id=
inurl:chappies.php?id=
inurl:read.php?id=
inurl:viewapp.php?id=
inurl:viewphoto.php?id=
inurl:rub.php?idr=
inurl:galeri_info.php?l=
inurl:review.php?id=
inurl:iniziativa.php?in=
inurl:curriculum.php?id=
inurl:labels.php?id=
inurl:story.php?id=
inurl:look.php?ID=
inurl:newsone.php?id=
inurl:aboutbook.php?id=
inurl:material.php?id=
inurl:opinions.php?id=
inurl:announce.php?id=
inurl:rub.php?idr=
inurl:galeri_info.php?l=
inurl:tekst.php?idt=
inurl:newscat.php?id=
inurl:newsticker_info.php?idn=
inurl:rubrika.php?idr=
inurl:rubp.php?idr=
inurl:offer.php?idf=
inurl:art.php?idm=
inurl:title.php?id=
inurl:recruit_details.php?id=
inurl:index.php?cPath= 

Let's suppose, we searched in google for the string:

inurl:pages.php?id=

We get a list of sites. Now we have to find which sites are vulnerable. 
Let, one of the sites is http://xxxxx.org/pages.php?id=88
Now to find whether it's vulnerable are not put a single quote (') before the no. like this:
http://xxxxx.org/pages.php?id='88
If it returns error, that means you can directly communicate with the database & inject sql query. Else you should try some other sites.  I guess, you are thinking, that would be a cumbersome process, finding vulnerable sites while checking for each site. Actually, it is, that's why hackers are so persistent. But some hackers designed some cool search engine which will simplify you process. You just need to put dork in the search box & the search engine will filter the vulnerable sites. You don't need to find vulnerable sites by testing each site. I will post the links of those vulnerability scanner search engines in the next post.