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Saturday, 7 December 2013

Pastebin monitoring

Few months ago I was thinking about public pastebins. From experience I can say many people put dumps/configs on public pastebins, just because its easy and fast. They don't think that someone can see it.
Examples from today:

All new pastebins are being published on main page, what makes the task much easier.


Looking through them can give us much information, often information that we shouldn't see. Of course opening every new one manualy is time wasting, there are a lot of useless pastebins. Here comes idea that I had few months ago, to make an automatic tool, that is opening every pastebin and analyzing content with keywords, unfortunately I haven't had time to implement it myself.
Accidentally few days ago, I found ready solution for that. Whats more the solution is open source and based on twitts, what makes it easy to follow.

It's named Dumpmon
Everything is written in python -  here you can find source on Github.

In addition it doesn't only find Acc/Db leaks, but Cisco configuration files, Google Api keys and honeypot logs as well.



At the end I would like to mention there is one more tool for similar purpose, named PastebinDorks



Unfortunately source code is not available and it doesn't show what kind of data is included in pastebin, only amount, but its worth to follow it as well.

To sum up if you are going to post data that you don't want to be seen by others, spend a little more time and use password protected solutions and if you want to be up to date with fresh leaks, follow mentioned bots ;)

Monday, 2 December 2013

DOS - Mozilla Firefox & Internet Explorer

Since some time ( I saw it at least a year ago ) there is available javascript code that cause DOS in newest versions of FF and IE. Unfortunately it doesn't work in Chrome, because each card has own process. I don't know what about Chrome or Opera, You can test it and let me know in comments. It was already reported to Mozilla long time ago ( I reported too ) but it seems they are not going to fix it.

Javascript code:
var a=String.fromCharCode(60,115,99,114,105,112,116,62,118,97,114,32,97,61,34,60,109 ,97,114,113,117,101,101,62,97,34,59,119,104,105,108,101,40,49,41,123,97,61,97,43 ,97,59,100,111,99,117,109,101,110,116,46,119,114,105,116,101,40,97,41,59,125,60, 47,115,99,114,105,112,116,62);
while(1){
a=a+a;
document.write(a);}

For test how and if it works:
WARNING, IT WILL CRASH YOUR BROWSER, OPEN ON OWN RESPONSIBILITY
https://dl.dropboxusercontent.com/u/17580849/freez.html

How it can be useful
You can say its useless and good just for making friends angry,
not only...

1. An attacker may add this code to website, so everyone who visit it will get crash, it will make website unreachable. Probably now you think - if attacker has access to website he can just delete main page or do something simpler than crashing visitors browsers. Yes, but javascript can be used in XSS attack and then its useful.

2. Attacker can also add it after phishing attack, after password getting step. Thanks to this attacker don't have to worry to show correct messages and redirection. Whats more after running that he can add ip/browser rule, so when victim visit phishing link again, will be redirected to real page. After one crash none will think something is wrong (in ff flash plugin often crash itself) and when he visit page second time, this time there will be nothing suspicious.

3. As everywhere in IT, the only limit is imagination.

At the end, Mozilla respond: