Bugtraq mailing list archives
Re: [DCC SPAM] Defeating Citi-Bank Virtual Keyboard Protection
From: Secure Science Corporation Bugtraq <bugtraq () securescience net>
Date: Sun, 07 Aug 2005 23:25:30 -0700
Well -This Virtual Keyboard Protection doesn't protect against formlogging, which tends to be a very signficant and popular method for malware to "phish" the information.
Most people actually trying to sell software against "key logging" should look more into the evolution of phishing malware and they will see that this will be defeated by the majority of phishing malware already out there (berbew, haxdoor, PW Steal, etc).
-Lance Debasis Mohanty wrote:
Recently I discovered a method to defeat the much hyped Citi-Bank Virtual Keyboard Protection which the bank claimed that it defends the customersagainst malicious programs like keyloggers, Trojans and spywares etc.Find the details below -Description: Early this year, Citi-Bank introduced the concept of Virtual Keyboard todefend against malicious programs like keyloggers, Trojans and spywares etc. The bank claimed that this concept would improve the security of those using its Internet banking facilities. Various features of this Virtual Keyboardare -. The Virtual Keyboard is dynamic . The sequence in which the numbers appears will change every time, the page is refreshed . The Virtual Keyboard protects you from malicious 'Spy Ware' and 'Trojan Programs' designed to capture your keystrokes . The Virtual Keyboard eliminates this risk and makes your Citibank login that much safer and provides for a secure online banking experience However, the Virtual Keyboard concept can be easily defeated by using Win32 APIs to access HTML documents. Refer the PoC (Proof of Concept) section formore details.Criticality: High Platform: Windows XP (SP2) + IE 6.0 Note: This PoC is applied only for Internet Explorer usersProof of Concept: Here I shall demonstrate how easily the Virtual Keyboard can be defeated bya simple program. I created a small program in VB 6.0 (called CitiPassLogger.exe) which can record not only the 16-Digit credit card but also the IPIN even if they are entered using the virtual keyboard. Currently, this program has been developed to log only the IPIN details of Citi-Bank India but the code can be modified to make it work universally forall the Citi-Bank sites with Virtual Keyboard login.As per my knowledge, there are no such keyloggers or spywares which uses any technique to defeat virtual keyboards. However, the technique that I am going to discuss here can be used by malicious program writers to write next generation viruses / worms to defeat such virtual keyboard protections. Hence, I hope people who are using Virtual Keybords shouldn't stay veryover-confident. Download the complete PoC and the tool from the following link: http://www.hackingspirits.com/vuln-rnd/defeat-citibank-vk.zipFor more vulnerabilities, visit http://www.hackingspirits.com/vuln-rnd/vuln-rnd.htmlHistory: 3rd August, 2005: Vendor was contacted but no response till today.Cheers, Debasis Mohanty (a.k.a Tr0y) www.hackingspirits.com
-- Best Regards, Lance James Secure Science Corporation www.securescience.net Author of 'Phishing Exposed' http://www.securescience.net/amazon/ Find out how malware is affecting your company: Get a DIA account today! https://slam.securescience.com/signup.cgi - it's free!
Current thread:
- Defeating Citi-Bank Virtual Keyboard Protection Debasis Mohanty (Aug 05)
- Re: Defeating Citi-Bank Virtual Keyboard Protection Daniel Bonekeeper (Aug 09)
- Re: [DCC SPAM] Defeating Citi-Bank Virtual Keyboard Protection Secure Science Corporation Bugtraq (Aug 09)
- Re: Defeating Citi-Bank Virtual Keyboard Protection AsTriXs (Aug 09)