This is also a prompt in javascript. JavaScript - Methods alert, prompt and confirm. Attack butt with non-valid XSS

In tsіy statty mi vivchimo three tsіkavih method, and itself methods alert (), confirm () і prompt ()... Stink all designations for interaction with koristuvach.

All three methods are located on the window (browser window). I can smell it like this: window.method_name (); Ale, JavaScript allows us to object window and to write, and write simply by naming the method.

Let's use the alert () method. The Danish method is to be shown as specified in the end of the browser. It will finally appear on top of all the sidelines, and as long as you don’t press the OK button, you don’t close.

For demonstration, vivedemo will be linked to the additional alert () method

Var today_is = "Monday"; alert ("Today" + today_is);

In the middle methods, we can use a row, only without html tag iv. The stench here is not obroblyayutsya, but vivodatsya yak є.

If a row, if you want to do it, if you want to move to a new row, then here is the html tag
not spratsyuє. Here you need to pick the "\ n" character.

Alert ("Looooooooong \ nStringggggggg");

The Danish method is often victorious for a joke a pardon in the code.

The process of processing the code from top to bottom, to catch the pardon, just write the alert () method in the pending area, de the pardon is found. I like alert () spratsyuvav, mean up to a row, there are no spellings, no mercy.

Dal, it is necessary to transfer it one row or more lower. Zberigaєmo zmіni, I know the new page in the browser, and wondering, if alert () spratsuvav, meaning, pardon to the row, de vin is, it is not, in іnshomu vypadku, if it’s not spratsyuvav, the pomp is in a row vishche tієї, de vin at once perebuvaє... Such an axis of rank can be recognized as a pardon in the code.

confirm () method

The whole method is victorious for the confirmation of the information, for the nutrition. Є Only two options appear, that (OK) chi ni (Cancel / Skasuvati). If the answer is correct, then the method is rotated to true (true), and the method is to rotate the box (false).

For the butt, vivedemo at the end of the additional confirm () method, de-energized koristuvach "Do you really want to overstep the side?". If you say so, then through the alert () method you will also see the message "Koristuvach wants to leave the side", and once again, you will see "Koristuvach DOES NOT want to leave the side".

Var user_answer = confirm ("Do you really want to overwrite the page?"); if (user_answer) alert ("Koristuvach would like to leave the page"); else alert ("Koristuvach DOES NOT want \ nto leave the side");

So the axis of the rank is the confirm () method. Win can vikoristovuvatisya in different vypadki. For example, before it was seen from the site, it was taken to feed a koristuvach, who was guilty of his own girl. But before the time you change the form, you can also feed the corystuvach "Did you remember everything correctly?"

Prompt () method

The first stop method, which is optional, is the prompt () method. The Danish method is victorious, but there are two methods below. Wien allows you to correct the information about the koristuvach, as you enter it in the text field.

As the result, the prompt () method will rotate either I will enter a row, if I press the OK button, or null, if I press the OK button.

This is a parameter, so that all the middle bows of a given method can be written in a row, or a supply, if you know the information, you need to enter it.

For example, we ask the koristuvach to respond to the food "Yak call you?" Introduced with the help of the name, it is displayed on the screen behind the auxiliary alert () method.

Var name = prompt ("How can I call you?"); alert ("Call you" + name);

Zberigaєmo and displaying the link in the browser.

Apparently, in the text field with the prompt () method, you can enter any information. The information will be rotated like a row, to navigate in different numbers or some special characters.

For the butt, we ask the koristuvach to enter two numbers, then we can multiply them. There will be a calculator for multiple numbers.

Var x = prompt ("Enter the first number:"); var y = prompt ("Enter another number:"); // Rewriting input numbers from a string type to a numeric type x = Number (x); y = Number (y); document.write (x + "*" + y + "=" + (x * y));

Entering numbers in rows, so for the correct result to be multiplied, you need to pass the number through the Number () function, as it converts the number from the string type into normal numbers.

Well, that's all. We now know three methods: alert (), confirm () і prompt ()... You can smilo vikoristovuvati on practice.

In JavaScript, there are three basic operations, Yaki allow you to trim out the data from the koristuvach, for the rest of the processing in scripts. Tse alert, prompt і confirm. For why the stench is stagnant, as it is vikoristovuvati and the nuances and will be discerned far in the statty.

alert

Stuck to display a modal window on the browser screen (this means that nothing can’t be drawn on the side, as long as it doesn’t cry out. At the opened butt, until quietly, leave the OK button) at the window.

When the message is displayed, the message is displayed in the alert, the script is displayed and updated when the modal window is closed.

At times zapovnennya fields і onslaught OK, in the script turn information, yaku vіv koristuvach.

Command syntax Sometimes it is foldable, lower than the front, and some fragments allow you to enter the text of the animal before the koristuvach and the content of the field for entering information, if you will be asked for the suggestions: result = Prompt (title, default);, de

• title- as a matter of fact, as koristuvachev will be introduced in the modal window. The argument is binding for zapovnenya.
• default- then, scho vivedetsya in the field for the introduction of the text for the change. It is also binding for storage, if you can’t put it, then you can bring it to the pardon in deyaky browsers. If you want to leave the field for entering information empty, then just ask prompt with the next rank:

  var myTest = prompt ("Be-yake info", "" ");

small butt vikoristannya prompt:

var year = prompt ( "How did you finish the VNZ?", 2008); alert ("Wee vipusknik" + year + "rock!");

Zazvychay given a command to vikoristovutsya for collecting tributes from koristuvachiv, as the script is necessary for the advancement of other robots.

confirm

Also є modal vіkno... Yak is not easy to ask for a name vikoristovutsya zzvychay for uzgodzhennya chogos z koristuvach.

For this purpose, it is sharpened - for the interchange of the OK and CANCEL buttons, to turn the script boolean values ​​true and false, respectively.

At the end of the day you can learn with methods ob'єkta window: Alert (), prompt () і confirm ().

Alert () method

The alert () method of the values ​​for displaying a cautious dialogue window on the screen, because we will assign it to the "OK" button. You can vikoristovuvatisya in order to convey important information to the koristuvach.

window.alert (Parameter_1);

The alert () method has one binding parameter - the message text that is displayed in the dialog window. The Danish method has not been reversed as a result of its vikonannya.

For example, a vivedemo for a site with an onslaught on a poperezhuvala dialogue vіkno: Go to the site

As a result, when the browser side is updated, we will appear in a window with the greetings of the koristuvach. When the OK button is pressed, it will appear immediately to feed your image. V this methodє two parameters, which are є binding and will be displayed for the title, which will be included in our selection of food іmenі koristuvach. The first other parameter is displayed for the value, as it will be displayed for the suggestions in the text field. If you enter your name and press the OK button, then your name will go to the window nameUser... If you press the button, then in the future you will write null.
First and foremost, as soon as you eat at the koristuvach, if you want to leave our site chi ni. Logical meaning will be provided for every zgody in the winter true, І at vіdmovі false for sure. Axis and everything, go to the nobility about these methods, to the stage in the coming lessons!

Cross-site scripting (XSS) is a difference, like a polyag in the embedded code, to see on the client side (JavaScript) in the web side, like to look at the insider.

Dispelling the winners through the lack of filtering tributes, which are sent by the coryster for insertion into the web site. It’s easier to zoom in on a specific butt. Think of it as a guest book - all the programs that are used for accepting a given view of a koristuvach and a false image. Obviously, the guest's book is not visualized or filtered, but introduced, but simply displayed.

You can throw your own simplest script(There is no simple thing, there is no need to write nasty scripts in PHP - it’s too big to be busy). Already there are more not enough ready-made options. For example, I will miss the knowledge of Dojo and OWASP Mutillidae II. There є a similar butt. In the autonomous middle of Dojo, go to the browser for permission: http: //localhost/mutillidae/index.php? Page = add-to-your-blog.php

Yakshko htos from koristuvachiv viv:

Those web side display:

Vitannya! Similar to your site.

And you will enter koristuvach like this:

Vitannya! Similar to your site.

They appear like this:

Browsers save free cookies from great number of sites. The skin site can be edited only by saving it yourself. For example, the site example.com is loaded into your browser. If you visit another.com site, the whole site (client and server scripts) cannot be used to process access to cookies, like the example.com site.

As the site example.com is inflated to XSS, it means that we can in the most efficient way to insert into new JavaScript code, and the code will be displayed on the site example.com! To do this, the code will be rendered, for example, access to the cookie site example.com.

I think everyone will remember that JavaScript is available in the browsers of corystuvachiv, so that with the presence of XSS, with the introduction of a shkidlivy code, I will deny access to the given corystuvach, which can be used to open the website.

In addition, the code is in all those in JavaScript, but itself:

• I will disable access to cookies to see the site
• you can bring some snakes zovnishniy viglyad sideways
• I will remove access to the exchange buffer
• you can use JavaScript programs, for example, key loggers
• listen to BeEF
• that in.

Easy-to-use buttstock for dolls:

For good reason, alert vikorystovuєtsya only for XSS detection. It’s really a big deal, because it’s possible to add a lot of fun. Vaughn is welcomed to call view server the malevolent and transmitted to the new stolen tribute.

see XSS

Naygolovnishe, what needs to be said about seeing XSS is what it stinks:

• Save (Post)
• Vidbit (Not post)

The butt of the postmen:

• Introduced by the wicked person of special formations by the guest book (comment, posted on the forum, profile) as a server, logging in from the server of the skin once, if it is used to power the image of the party.
• The malevolent, having cut off access to the server tribute, for example, through SQL ін'єкцію, І vvadv in vidayutsya koristuvachevі danі evil JavaScript code (s ki-logery or s BeEF).

The butt of the non-perpetual:

• On the site there is a joke, as if at the same time with the results the joke was shown to the eye “You were joking: [row of joke]”, with all the tribute not to be filtered by the proper rank. Oskіlki such a side is displayed only for the one who has є a response to it, then if the evil-doer does not send the site's message to the wrong ones, the attack does not go wrong. To replace the redirection of the victim's request, you can choose to post the malicious script on a neutral site, which is the victim.

I also see (acts in the sense of non-perceptual XSS urges, dekh, as well, as a kind of can be or a kind of post-XSS):

• DOM models

DOM-based XSS features

As it’s simple to say, it’s very simple to say that the program of "extravagant" non-native XSS can be programmed as HTML code is displayed. For example, the posilannya is formed by the following rank:

Http://example.com/search.php?q= "/>

And when the output HTML code is displayed, it looks like this: