Last week's feature explaining why passwords are under assault like never before touched a nerve with many Ars readers, and with good reason. After all, passwords are the keys that secure Web-based bank accounts, sensitive e-mail services, and virtually every other facet of our online life. Lose control of the wrong password and it may only be a matter of time until the rest of our digital assets fall, too.
Take, for example, the hundreds of millions of WiFi networks in use all over the world. If they're like the ones within range of my office, most of them are protected by the WiFi Protected Access or WiFi Protected Access 2 security protocols. In theory, these protections prevent hackers and other unauthorized people from accessing wireless networks or even viewing traffic sent over them, but only when end users choose strong passwords. I was curious how easy it would be to crack these passcodes using the advanced hardware menus and techniques that have become readily available over the past five years. What I found wasn't encouraging.
First, the good news. WPA and WPA2 use an extremely robust password-storage regimen that significantly slows the speed of automated cracking programs. By using the PBKDF2 key derivation function along with 4,096 iterations of SHA1 cryptographic hashing algorithm, attacks that took minutes to run against the recent LinkedIn and eHarmony password dumps of June would require days or even weeks or months to complete against the WiFi encryption scheme.
What's more, WPA and WPA2 passwords require a minimum of eight characters, eliminating the possibility that users will pick shorter passphrases that could be brute forced in more manageable timeframes. WPA and WPA2 also use a network's SSID as salt, ensuring that hackers can't effectively use precomputed tables to crack the code.
That's not to say wireless password cracks can't be accomplished with ease, as I learned firsthand.
I started this project by setting up two networks with hopelessly insecure passphrases. The first step was capturing what is known as the four-way handshake, which is the cryptographic process a computer uses to validate itself to a wireless access point and vice versa. This handshake takes place behind a cryptographic veil that can't be pierced. But there's nothing stopping a hacker from capturing the packets that are transmitted during the process and then seeing if a given password will complete the transaction. With less than two hours practice, I was able to do just that and crack the dummy passwords 'secretpassword' and 'tobeornottobe' I had chosen to protect my test networks.
Mac os guest account install apps. MAC filtering is totally useless to protect company networks and data or to prevent networks from being hacked over WiFi because is it so easy to bypass. When MAC filtering is in place you can easily determine whitelisted MAC addresses by scanning for connected clients using a tool like airodump-ng. Another easy to use Wi-Fi hack app for iPhone is Wi-Fi Map. It allows you to efficiently find fast and free internet at a tap of your finger. The app will enable you to access a stable network connection worldwide and is also the number 1 Wi-Fi app in almost 50 countries.
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To capture a valid handshake, a targeted network must be monitored while an authorized device is validating itself to the access point. This requirement may sound like a steep hurdle, since people often stay connected to some wireless networks around the clock. It's easy to get around, however, by transmitting what's known as a deauth frame, which is a series of deauthorization packets an AP sends to client devices prior to it rebooting or shutting down. Devices that encounter a deauth frame will promptly rejoin an affected network.
Wifi App Download For Pc
Using the Silica wireless hacking tool sold by penetration-testing software provider Immunity for $2,500 a year, I had no trouble capturing a handshake established between a Netgear WGR617 wireless router and my MacBook Pro. Indeed, using freely available programs like Aircrack-ng to send deauth frames and capture the handshake isn't difficult. The nice thing about Silica is that it allowed me to pull off the hack with a single click of my mouse. In less than 90 seconds I had possession of the handshakes for the two networks in a 'pcap' (that's short for packet capture) file. My Mac never showed any sign it had lost connectivity with the access points.
I then uploaded the pcap files to CloudCracker, a software-as-a-service website that charges $17 to check a WiFi password against about 604 million possible words. Within seconds both 'secretpassword' and 'tobeornottobe' were cracked. A special WPA mode built-in to the freely available oclHashcat Plus password cracker retrieved the passcodes with similar ease.
It was the neighborly thing to do
Cracking such passcodes I had set up in advance to be guessed was great for demonstration purposes, but it didn't provide much satisfaction. What I really wanted to know was how much luck I'd have cracking a password that was actually being used to secure one of the networks in the vicinity of my office.
So I got the permission of one of my office neighbors to crack his WiFi password. To his chagrin, it took CloudCracker just 89 minutes to crack the 10-character, all-numerical password he used, although because the passcode wasn't contained in the entry-level, 604 million-word list, I relied on a premium, 1.2 billion-word dictionary that costs $34 to use.
AdvertisementMy fourth hack target presented itself when another one of my neighbors was selling the above-mentioned Netgear router during a recent sidewalk sale. When I plugged it in, I discovered that he had left the eight-character WiFi password intact in the firmware. Remarkably, neither CloudCracker nor 12 hours of heavy-duty crunching by Hashcat were able to crack the passphrase. The secret: a lower-case letter, followed two numbers, followed by five more lower-case letters. There was no discernible pattern to this password. It didn't spell any word either forwards or backwards. I asked the neighbor where he came up with the password. He said it was chosen years ago using an automatic generation feature offered by EarthLink, his ISP at the time. The e-mail address is long gone, the neighbor told me, but the password lives on.
No doubt, this neighbor should have changed his password long ago, but there is a lot to admire about his security hygiene nonetheless. By resisting the temptation to use a human-readable word, he evaded a fair amount of cutting-edge resources devoted to discovering his passcode. Since the code isn't likely to be included in any password cracking word lists, the only way to crack it would be to attempt every eight-character combination of letters and numbers. Such brute-force attacks are possible, but in the best of worlds they require at least six days to exhaust all the possibilities when using Amazon's EC2 cloud computing service. WPA's use of a highly iterated implementation of the PBKDF2 function makes such cracks even harder.
Besides changing the password every six months or so and not using a 10-digit phone number, my neighbors could have taken another important step to improve their WiFi security. WPA allows for passwords with 63 characters in them, making it possible to append four or five randomly selected words—'applesmithtrashcancarradar' for instance—that are easy enough to repeat to guests who want to use your wireless network but are prohibitively hard to crack.
Yes, the gains made by crackers over the past decade mean that passwords are under assault like never before. It's also true that it's trivial for hackers in your vicinity to capture the packets of the wireless access point that routes some of your most closely held secrets. But that doesn't mean you have to be a sitting duck. When done right, it's not hard to pick a passcode that will take weeks, months, or years to crack.
With odds like that, crackers are likely to move onto easier targets, say one that relies on the quickly guessed 'secretpassword' or a well-known Shakespearean quote for its security.
Even in modern times, breaking through a wireless network is not as easy as it sounds. If you’re in need for a certain tool or software which helps to crack open passwords used in wireless networks, then the WiFi Cracker tool is the right one for you. Some of the most recommended WiFi Cracker tools are discussed in this article. Use any of these tools to break through all kinds of password protected wireless networks.
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Password Cracker
Password Cracker is a free tool used to find out the passwords from various wireless networks in and around your area. This WiFi Cracker software tool comes with useful features which help to reveal the encrypted passwords with ease. Crack through any password protected wireless networks using this handy tool.
WiFi Hacker
WiFi Hacker is a WiFi Cracker tool used for hacking all sorts of wireless networks which are password protected. Break or Open any WiFi network using this simple software tool which can be downloaded for free. This tool can be customized according to your convenience and it also removes threats from your devices.
Fern WiFi Cracker
Fern WiFi Cracker tool is similar to WiFi Cracker 4.6.2 Free Download and can be downloaded in any of the online websites. The latest version of this tool comes with several bug fixes, search options, and customizable settings. It can help you open up any kind of password protected wireless networks.
Wifi Cracker Software for other Platforms
A wide number of WiFi Cracker tools are being introduced nowadays due to the rise in demands of the customers. These tools support all the various platforms and you can search online to find out the best one for your device. Install the tool in your device to start hacking wireless networks.
Wi-Fi Crack for Mac
WiFi Crack for Mac allows users to crack open any kind of wireless network with utmost ease. This WiFi Cracker tool comes with powerful command line tools which help in collecting the WEP password from the network. All 64-bit Mac devices containing OS X 10.7 and higher versions support this tool.
WiFi Cracker Software for Android – WiFi Hacker Simulated
WiFi Hacker Simulated looks out for all the wireless networks near to you and finds out the password used in those networks. Use this WiFi Cracker Android application to perform deep analysis of networks and recovery of lost keys. This tool can be installed in all devices using Android 2.2 and higher versions.
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Wifi Hacking
WiFi Hacking tool helps to break open all sorts of wireless networks with ease. WiFi Cracker Windows application requires the use of several technologies which help in easy detecting and password identification of protected wireless networks. The wireless configuration needs to be checked for errors so that the software works without any interruptions.
Most popular WiFi Cracker Software – WiFi Wireless Cracker
Fern WiFi Wireless Cracker tool is the most popular WiFi Cracker tool used in recent times due to its wireless attack feature and security auditing tool. Recover all sorts of keys and passwords, run attacks on all wireless networks, discover network traffic and do much more using this free WiFi Cracker tool.
What is WiFi Cracker Software?
WiFi Cracker Software can be used to hack through all sorts of wireless networks in and around your location. Discover the flow of network traffic, find out lost keys, restore last used passwords, identify network host and unlock all kinds of wireless networks using this handy tool. You can also see WiFi Signal Booster
WiFi Cracker helps users to customize network settings and performs analysis for identification of wireless networks near you. It comes with a simple interface and uses various inbuilt commands to crack open WiFi networks with ease. Customize network keys and access all kinds of wireless networks using this user-friendly WiFi Cracker software tool. You can also see Wi-Fi Analyzer Software
After the program loaded selected data successfully, tap on the 'Next' button.Now, you will get a prompt 'During transfer, please do not disconnect either phone' from the popup Tips window, click 'OK' to start the data transferring progress. https://tinvicaber.tistory.com/5.
WiFi Cracker Software tool can be used by both amateurs as well as professional users. These tools provide all the necessary features which help to crack into most of the WiFi networks near your area. Choose any of the above-mentioned software tools to start hacking wireless networks right away.
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