Download E-books The Browser Hacker's Handbook PDF

By Wade Alcorn, Christian Frichot, Michele Orru

Hackers take advantage of browser vulnerabilities to assault deep inside networks

The Browser Hacker's Handbook offers a realistic realizing of hacking the standard internet browser and utilizing it as a beachhead to release additional assaults deep into company networks. Written via a workforce of hugely skilled computing device protection specialists, the instruction manual presents hands-on tutorials exploring a number present assault methods.

The net browser has turn into the preferred and regularly occurring laptop "program" on the planet. because the gateway to the web, it's a part of the storefront to any enterprise that operates on-line, however it can be essentially the most weak access issues of any procedure. With assaults at the upward thrust, businesses are more and more utilizing browser-hardening ideas to guard the original vulnerabilities inherent in all at the moment used browsers. The Browser Hacker's Handbook completely covers complicated safety matters and explores suitable themes such as:

  • Bypassing a similar starting place Policy
  • ARP spoofing, social engineering, and phishing to entry browsers
  • DNS tunneling, attacking internet purposes, and proxying—all from the browser
  • Exploiting the browser and its atmosphere (plugins and extensions)
  • Cross-origin assaults, together with Inter-protocol conversation and Exploitation

The Browser Hacker's Handbook is written with a qualified protection engagement in brain. Leveraging browsers as pivot issues right into a target's community may still shape an imperative part into any social engineering or red-team safeguard evaluate. This guide offers a whole technique to appreciate and constitution your subsequent browser penetration test.

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Utilizing Pop-Under home windows in the event you browse to an internet site, there's not anything extra stressful than an unprompted pop-up. what percentage occasions have you ever been pressured to continually 102 bankruptcy 3 ■ Retaining regulate shut a number of pop-ups showing ads? while a pop-up is a brand new browser window that looks within the foreground of the present browser web page, a pop-under is a brand new browser window that looks within the heritage, actually less than the present browser window. newest browsers block pop-under habit by way of default. one of the simplest ways to open a pop-under with JavaScript is through the use of the window. open() technique. the next code might be blocked by means of default within the most modern types of Firefox and Chrome: window. open('http://example. com','popunder','toolbar=0 location=0,directories=0,status=0,menubar=0,scrollbars=0, resizable=0,width=1,height=1,left='+screen. width+', top='+screen. height+''). blur(); window. focus(); The script is blocked as the browser realizes the recent window will open with none person intervention, akin to an particular mouse click on. you may begin to imagine how one can pass this habit. the 1st strength strategy to learn is through the use of MouseEvents to programmatically software mouse activities via JavaScript code. consider you have got a hyperlink you keep watch over, both by way of growing it dynamically or by way of exploiting an XSS vulnerability inside of an onClick characteristic, just like the next: Goo Now inject the subsequent JavaScript within the related web page: functionality open_link(){ window. open('http://example. com','popunder','toolbar=0, location=0,directories=0,status=0,menubar=0,scrollbars=0, resizable=0,width=1,height=1,left='+screen. width+', top='+screen. height+''). blur(); window. focus(); } functionality clickLink(link) { var cancelled = fake; if (document. createEvent) { var occasion = record. createEvent("MouseEvents"); occasion. initMouseEvent("click", real, actual, window, bankruptcy 3 ■ Retaining Control 103 zero, zero, zero, zero, zero, fake, fake, fake, fake, zero, null); hyperlink. dispatchEvent(event); }else if(link. fireEvent){ hyperlink. fireEvent("onclick"); } } clickLink(document. getElementById('malicious_link')); The previous code tells the browser to execute the clickLink() functionality at the A aspect with the given identity, which incorporates the window. open name contained in the onClick occasion. regrettably, this test will nonetheless now not paintings simply because a MouseEvent created with JavaScript isn't the similar as a true consumer click on. to avoid this dilemma, rather than hoping on growing mouse occasions, you will be craftier and use JavaScript so as to add or overwrite onClick attributes on present web page hyperlinks. this method should be multiplied additional within the Man-inthe-Browser assaults part. the subsequent code retrieves the entire tags at the web page, including an onClick characteristic that once prompted will open the pop-under. The $. popunder() functionality is a jQuery plugin14 written by way of Hans-Peter Buniat that creates cross-browser pop-under home windows. var anchors = rfile.

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