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Các bài viết vào Tuesday 18th April 2006
Chào các bạn,
Cách đây vài ngày tôi có đọc trên một forum nói về cách có thể dùng Goggle.com để tìm các thông tin quan trọng mà không cần bẻ khóa một website nào hết. Bạn biết đối Google.com khi "search" bạn có thể dùng một số từ khóa để tìm một số cụm từ của các website thường không muốn người khác vào. Okay, Vậy chúng ta hảy bắt đầu nha. Bạn vào website google.com và bắt đầu đánh dòng lệnh sau trên ô Search: allintitle: "index of/root" Sau đó bạn sẻ thấy khoảng 3120 sites có cụm từ này, bây giờ bạn có thể từng cái một kiểm tra xem có thông tin nào bạn cần không, Thế nhưng có bạn không thích các thông tin này, nhưng lại thích tìm hiểu về password của admin các site, các bạn có thể đánh dòng lệnh sau: inurl:"auth_user_file.txt" Wow, bây giờ các bạn tha hồ mà nghiên cứu password & username, khi tôi đánh dòng lệnh này, website đầu tiên mà tôi bấm vào là Here và nó cho tôi data như sau: $1$nr$90wmeMQIDw0HforiU2vUG1|admin|admin|Martin|Klässner|[email protected]|on $1$nr$90wmeMQIDw0HforiU2vUG1|Klaessner_Martin|normal|Martin|Klässner|[email protected]|on $1$nr$90wmeMQIDw0HforiU2vUG1|Klaessner_Juergen|normal|Jürgen|Klässner|[email protected]|on $1$as$reDTTzzp8RaJUXVjXNksi0|Mauer_Harald|normal|Harald|Mauer|[email protected]|on Cái này là cái gì vậy nè, phần này dành cho các cao thủ diển dịch nhen hihihi. Nói chung với Google.com các bạn có thể dùng các chuổi sau đây, và chắc chắn các bạn sẻ không bao giờ chán khi lên net nửa đâu. "Index of /admin" "Index of /password" "Index of /mail" "Index of /" +passwd "Index of /" +password.txt "Index of /" +.htaccess index of ftp +.mdb allinurl:/cgi-bin/ +mailto administrators.pwd.index authors.pwd.index service.pwd.index filetype:config web gobal.asax index allintitle: "index of/admin" allintitle: "index of/root" allintitle: sensitive filetype:doc allintitle: restricted filetype :mail allintitle: restricted filetype:doc site:gov inurl:passwd filetype:txt inurl:admin filetype:db inurl:iisadmin inurl:"auth_user_file.txt" inurl:"wwwroot/*." top secret site:mil confidential site:mil allinurl: winnt/system32/ (get cmd.exe) allinurl:/bash_history intitle:"Index of" .sh_history intitle:"Index of" .bash_history intitle:"index of" passwd intitle:"index of" people.lst intitle:"index of" pwd.db intitle:"index of" etc/shadow intitle:"index of" spwd intitle:"index of" master.passwd intitle:"index of" htpasswd intitle:"index of" members OR accounts intitle:"index of" user_carts OR user_cart ALTERNATIVE INPUTS _vti_inf.html service.pwd users.pwd authors.pwd administrators.pwd shtml.dll shtml.exe fpcount.exe default.asp showcode.asp sendmail.cfm getFile.cfm imagemap.exe test.bat msadcs.dll htimage.exe counter.exe browser.inc hello.bat default.asp\ dvwssr.dll cart32.exe add.exe index.jsp SessionServlet shtml.dll index.cfm page.cfm shtml.exe web_store.cgi shop.cgi upload.asp default.asp pbserver.dll phf test-cgi finger Count.cgi jj php.cgi php nph-test-cgi handler webdist.cgi webgais websendmail faxsurvey htmlscript perl.exe wwwboard.pl www-sql view-source campas aglimpse glimpse man.sh AT-admin.cgi AT-generate.cgi filemail.pl maillist.pl info2www files.pl bnbform.cgi survey.cgi classifieds.cgi wrap cgiwrap edit.pl perl names.nsf webgais dumpenv.pl test.cgi submit.cgi guestbook.cgi guestbook.pl cachemgr.cgi responder.cgi perlshop.cgi query w3-msql plusmail htsearch infosrch.cgi publisher ultraboard.cgi db.cgi formmail.cgi allmanage.pl ssi adpassword.txt redirect.cgi cvsweb.cgi login.jsp dbconnect.inc admin htgrep wais.pl amadmin.pl subscribe.pl news.cgi auctionweaver.pl .htpasswd acid_main.php access.log log.htm log.html log.txt logfile logfile.htm logfile.html logfile.txt logger.html stat.htm stats.htm stats.html stats.txt webaccess.htm wwwstats.html source.asp perl mailto.cgi YaBB.pl mailform.pl cached_feed.cgi global.cgi Search.pl build.cgi common.php show global.inc ad.cgi WSFTP.LOG index.html~ ~ index.html.bak .bak print.cgi register.cgi webdriver bbs_forum.cgi mysql.class sendmail.inc CrazyWWWBoard.cgi search.pl way-board.cgi webpage.cgi pwd.dat adcycle post-query help.cgi Chúc các bạn may mắn và tìm thấy nhửng gì muốn tìm hihiih. Google: A Hacker's Best Friend @ Articles ::: Social Engineering May 30 2003, 18:35 (UTC+0) Millions of web servers connected and in theory, all data can be reached Paris2K writes: In the last few years a number of news articles appeared that warned of the fact that hackers (or crackers if you will) make use of the google search engine to gain access to files they shouldn't be allowed to see or have access to. This knowledge is nothing new to some people but personally I have always wondered how exactly a thing like this works. VNUnet’s James Middleton wrote an article in 2001 talking about hackers using a special search string on google to find sensitive banking data: "One such posting on a security newsgroup claimed that searching using the string 'Index of / +banques +filetype:xls' eventually turned up sensitive Excel spreadsheets from French banks. The same technique could also be used to find password files"[1] Another article that appeared on wired.com told us how Adrian Lamo, a hacker who made the news often the last couple of years, explained that google could be used to gain access to websites of big corporations. “For example, typing the phrase "Select a database to view" -- a common phrase in the FileMaker Pro database interface -- into Google recently yielded about 200 links, almost all of which led to FileMaker databases accessible online.”[2] These articles kept on coming up in the online news. U.S. Military and Government websites were vulnerable because admin scripts could be found using google, medical files, personal records, everything suddenly seemed just one google search away. But these articles seemed to show up once every half year and always talked about it as if it was something new. Another thing was, the articles never explained how one would actually go about doing this. Almost never an example of a search string was given. The last time I read one of these articles I decided it was time to find out for myself, whether google actually could do all they say it can. The following is a report of my findings and a description of some techniques and search strings one could use. Theory The theory behind this is actually quite simple. Either you think of certain data you would like to acquire and try and imagine in what files this kind of data could be stored and you search for these files directly. (Search for *.xls files for example) Or you take the more interesting approach and you try to think of a certain software that allows you to perform certain tasks or to access certain things and you search for critical files of this software. An example could be a content management system. You read up on this particular content management system, check out of what files it exists and search for those. A great example is that of the databases mentioned above, where you know the string “view database” is used on pages that shouldn’t be accessible to you and you then search for pages containing that string, or you check the software and notice that the option to view a database is linked on a webpage within this software called “viewdbase.htm” and you search for “viewdbase.htm” The most important thing is to have a clear goal, to know what it is you want to find. Then search for these specific files or trademarks that these files have. Google Search Options Specific file types: *.xls, *.doc, *.pdf *.ps *.ppt *.rtf Google allows you to search for specific file types, so instead of getting html-files as a result (websites) you get Microsoft excel files for example. The search string you would use would be this: Filetype:xls (for excel files) or filetype:doc for word files. But maybe more interesting would be searching for *.db files and *.mdb files. Google by the way doesn’t tell you you can search for *.db and *mdb files. I wonder what other file types one can search for. Things that come to mind are *.cfg files or *.pwd files, *.dat files, stuff like that. Try and think of something that might get you some interesting results. Inurl Another useful search option is the inurl: option which allows one to search for a certain word one would want to be in the url. This gives you the opportunity to search for specific directories/folders, especially in combination with the “index of” option, about which I will talk later on. An example would be inurl:admin which would give you results of website urls that have the word “admin” in the url. Index of The index of option is another option that isn’t especially thought of by the creators of google, but comes in very handy. If you use the “index of” string you will find directory listings of specific folders on servers. An example could be: ‘index of” admin or index.of.admin which would get you many directory listings of admin folders. (don’t forget to use the quotes in this case since you are looking for the entire “index of” string, not just for “index” and “of”) Site The site option allows you to come up with results that only belong to a certain domain name extension or to a specific site. For example one could search for .com sites or .box.sk sites or .nl sites, but also for results from just one site, but more interesting might be to search for specific military or government websites. An example of a search string would be: Site:mil or site:gov Site:neworder.box.sk “board” Intitle Intitle is another nice option. It allows you to search for html files that have a certain word or words in the title. The format would be intitle:wordhere. You could check out what words appear in the title of some online control panel or content management system and then search google for this word with the intitle option, to find these control panel pages. Link The Link option allows you to check which sites link to a specific site. As described in Hacking Exposed Third Edition, this could be useful: These search engines provide a handy facility that allows you to search for all sites that have links back to the target organization’s domain. This may not seem significant at first but let’s explore the implications. Suppose someone in an organization decides to put up a rogue website at home or on the target network’s site.“”[4] Combining Search Options The above mentioned search options might or might not be known to you, but even though they can amount to some interesting results, it’s a fact that when you start combining them, that’s when google’s magic starts to show. For example, one could try this search string: inurl:nasa.gov filetype:xls "restricted" or this one: site:mil filetype:xls "password" or maybe site:mil “index of” admin (I’m just producing these from the top of my head, I don’t know whether they’d result in anything interesting, that’s where you come in. You got to find a search string that gets the results you want.) Examples; The Good Stuff Specific file types: *.xls, *.doc, *.pdf *.ps *.ppt *.rtf To start out simple, you can try and search directly for files that you believe might hold interesting information. The obvious choices for me were things like: Password, passwords, pwd, account, accounts, userid, uid, login, logins, secret, secrets, all followed by either *.doc or *.xls or *.db This led me to quite some interesting results, especially with the *.db option but I actually also found some passwords.doc files, containing working passwords. http://www.doc.state.ok.us/Spreadsheets/pr...20for%20web.xls http://www.bmo.com/investorrelations/curre...new/private.xls http://www.nescaum.org/Greenhouse/Private/...cipant_List.xls http://www.dscr.dla.mil/aviationinvest/attendance_5Apr01.xls http://web.nps.navy.mil/~drdolk/is3301/PART_IS3301.XLS Admin.cfg Admin.cfg is, most of the times, an admin configuration file of some sort. Many different software obviously use names like “config” or “admin” or “setup”, etc. And most of the times these files contain sensitive information and thus, shouldn’t be accessible for people browsing the web. I tried a search for admin.cfg, using the following search string on google: inurl:admin.cfg “index of” This led me to many results of which many were useless. But some paid out. I found for example: http://www.alternetwebdesign.com/cgi-bin/directimi/admin.cfg Which contained a password. This was the admin password for a database located at http://www.alternetwebdesign.com/cgi-bin/d...e.cgi?admin.cfg This database contained sensitive client data of this particular company. I then proceeded to e-mail the company and tell them about the flaw. They replied to me in a very friendly manner and told me they appreciated my help and that they would take the necessary steps to solve the problem. Webadmin A short while back, while working on this article, I ran into this website: http://wacker-welt.de/webadmin/ The website explains that “webadmin” is a small piece of software that allows one to remotely edit parts of a website, upload files, etc. The main page for the webadmin control centre is called ‘webeditor.php”. So obviously, my next step was to visit google and use the inurl tag to find webeditor.php pages that I could reach. I used the following search string: inurl:webeditor.php and I found the following results: http://orbyonline.com/php/webeditor.php http://www-user.tu-chemnitz.de/~hkri/Neuer...r/webeditor.php http://artematrix.org/webeditor/webeditor.php http://www.directinfo.hu/kapu/webeditor.php All these webeditor.php files were reachable by anyone, merely because the owners failed to (correctly) protect these pages by using .htacces. This mistake allows whomever to change the webpages on the server and thus defacing the site, uploading files and thus possible gaining full access to the server. In browsing through these sites I noticed that the file that allows one to upload files is called “file_upload.php”, which I could then search for at google and find more examples. http://www.hvcc.edu/~kantopet/ciss_225/exa...file_upload.php A good example: http://www.pelicandecals.com/admin/webeditor.php The script allows you to change files, like in the above examples, including the index.php. In theory one could write or download whatever malicious script one wants, paste this code into an existing file or just upload it and well, the consequences are obvious. there was also a link “Return Administration” and clicking on it took me to: http://www.pelicandecals.com/admin/administration.html Where there were customer addresses, where one could change pricing, etc. Content Management Systems Content Management Systems are software programs that allow a webmaster to edit, alter and control the content of his website. But the same goes for online control panels of websites. The idea is to find out what files are for example the main files of these software programs. “cms.html” could be one or “panel.html” or “control.cfg” You find out what filenames a certain package uses, you then think of a good search string and hope you strike gold. Frontpage Server Extensions HTML Administration Forms “You can remotely administer the FrontPage Server Extensions from any computer connected to the Internet by using the FrontPage Server Extensions HTML Administration Forms, a set of Web pages that allow you to administer the FrontPage Server Extensions remotely.[3] Well, that’s what Microsoft’s manual has to say about it. This means, users with access to these forms are able to perform a number of administrative functions, remotely. And that means, these forms should be well protected from non-authorized people. Now how would one go about finding non-protected forms over the internet? The first thing we do is try to find out what files these scripts consist of. A short visit to the Microsoft website or a peek into the frontpage manual tells us that the main page for these administration forms is a file called “fpadmin.htm”. So that’s what we need to search for. Now to find a correct search string that will get us the results we want. When a default install is performed, the files get installed in a directory called “admin”. Putting to use what we have learned about google search options and the theory behind this technique, a good search string might be: inurl:fpadmin.htm “index of” admin or maybe inurl:admin/fpadmin.htm Well, these were the results I got: http://www.lehigh.edu/~ineduc/degree_programs/tbte/admin/ http://blackadder.eng.monash.edu.au/frontpage/admin/ http://www.lehigh.edu/collegeofeducation/d...ams/tbte/admin/ http://www.vsl.gifu-u.ac.jp/freeman/frontpage4/admin/ http://www.tech-geeks.org/contrib/loveless...033/fpadmin.htm http://fp.nsk.fio.ru/admin/1033/fpadmin.htm But the frontpage manual says more: “Because of the security implications of making remote FrontPage administration possible from Web browsers, the HTML Administration Forms are not active when they are first installed.”[3] This means that some of these could be active and thus useful to us and some might not. There is of course, only one way to find out and that is to perform one of the possible administrative functions and see if you get results. I for one decided not to go that far, because it would mean breaking the law. But I’m not here to teach ethics, or at least not today. Freesco Router The Freesco router software for Linux as a default, installs a small web browser which allows owners to control the router through the http protocol. In other words, a website automatically gets setup that allows you to control the router. The default password and login for this control panel is “admin” and “admin”. Many people who use freesco don’t know this. You could search for these Freesco router control websites by using a string such as: intitle:”freesco control panel” or “check the connection” which are words that either are in the title of these pages or on the pages itself. That’s what it’s all about; you check out a certain software, find the part you’d want to be able to reach and figure out which search string would get you the good results. Extra Tips • Remember English is the most used language online, but it’s not the only one. Try and search for words or strings that are specific to your language or French or German, etc. For example “beheer” is a Dutch word for “administration” or “privat” is German for “private”. • You can check vulnerability scanners’ scan lists for interesting search strings you might want to use or combine with your own strings. Check http://paris2k.at.box.sk/tools/listings/ for some examples. • Search for files like “config.inc.php” or “mysql.cfg” that could contain mySQL password and username combinations. Try to think of good search strings using words like PHP, SQL, mySQl, etc. • Try things like: inurl:admin "index of" "database" or inurl:phpmyadmin "index of" or inurl:mysql "index of" site:neworder.box.sk intitle:index.of or intitle:index.of.private( = intitle:"index of private") Conclusion The internet is a network to which hundreds of thousands, if not millions of web servers are connected and in theory, all data can be reached, unless properly protected. Both software designers and end users should pay more attention to default installation security configuration and security policy. In the end, there are always going to be people who make mistakes, use default installs, use poorly secured software or just don’t care or still believe there’s no danger in putting this kind of data online. And in the end there’s also always going to be curious people who love to find that interesting information they have been hoping for. Google can help you considerably, in locating this kind of information and it’s easy and fun. Sidenote I have used in this article, “live examples” because “foobar examples” in this case wouldn’t have been very useful. I hope you choose to learn from these examples and not use them to commit malicious acts. Think of a great search string yourself and don’t abuse the ones I have shown to explain the technique a little bit. (Guess I couldn’t stay away from the ethics lesson after all) Afterword To not abandon tradition I would like to take the chance to greet some people. People like JLP, Rattlesnake, Drew, X, Tek, Sean, Marek, Resolution and others… you all know who you are, Thanks for helping me out numerous times with numerous different things. Paris2K Bibliography 1. Google not 'hackers' best friend',James Middleton, VNUnet.com, 2001 http://www.vnunet.com/News/1127162 2. Google: Net Hacker Tool du Jour, Christopher Null, wired.com, 2003 http://www.wired.com/news/infostructure/0 ,1377,57897,00.html 3. Microsoft FrontPage 2000 Server Extensions Resource Kit http://sciris.shu.edu/Manuals/FrontPage/serk/adhtm_1.htm 4. Hacking Exposed Third Edition, McClure, Scambray, Kurtz, ISBN: 0-07-219381-6 http://www.osborne.com
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