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Search for the login information. Type password into the search box, then scroll through the highlighted results. If you don't see any results, shorten the search to pass and repeat, then do the same with user, username, login, and other keywords which may describe login information. If you run into a problem in OS X where editing folder contents requires authentication, here is how to overcome it and continue working. Topher Kessler Jan. 13, 2012 3:06 p.m. Two-factor authentication is an additional layer of security for your Apple ID to protect your ownership and guarantee your only access to your data no matter whether somebody knows your password. Once you enabled this feature, your Apple account can only be accessed on your trusted Apple device by your phone number and a 6-number digital.

What is Password Cracking?

Password cracking is the process of attempting to gain Unauthorized access to restricted systems using common passwords or algorithms that guess passwords. In other words, it’s an art of obtaining the correct password that gives access to a system protected by an authentication method.

Password cracking employs a number of techniques to achieve its goals. The cracking process can involve either comparing stored passwords against word list or use algorithms to generate passwords that match

In this Tutorial, we will introduce you to the common password cracking techniques and the countermeasures you can implement to protect systems against such attacks.

Topics covered in this tutorial

What is password strength?

Password strength is the measure of a password’s efficiency to resist password cracking attacks. The strength of a password is determined by;

• Length: the number of characters the password contains.
• Complexity: does it use a combination of letters, numbers, and symbol?
• Unpredictability: is it something that can be guessed easily by an attacker?

Let’s now look at a practical example. We will use three passwords namely

1. password

2. password1

3. #password1$

For this example, we will use the password strength indicator of Cpanel when creating passwords. The images below show the password strengths of each of the above-listed passwords.

Note: the password used is password the strength is 1, and it’s very weak.

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Note: the password used is password1 the strength is 28, and it’s still weak.

Note: The password used is #password1$ the strength is 60 and it’s strong.

The higher the strength number, better the password.

Let’s suppose that we have to store our above passwords using md5 encryption. We will use an online md5 hash generator to convert our passwords into md5 hashes.

The table below shows the password hashes

Password	MD5 Hash	Cpanel Strength Indicator
password	5f4dcc3b5aa765d61d8327deb882cf99	1
password1	7c6a180b36896a0a8c02787eeafb0e4c	28
#password1$	29e08fb7103c327d68327f23d8d9256c	60

We will now use http://www.md5this.com/ to crack the above hashes. The images below show the password cracking results for the above passwords.

As you can see from the above results, we managed to crack the first and second passwords that had lower strength numbers. We didn’t manage to crack the third password which was longer, complex and unpredictable. It had a higher strength number.

Password cracking techniques

There are a number of techniques that can be used to crack passwords. We will describe the most commonly used ones below;

• Dictionary attack– This method involves the use of a wordlist to compare against user passwords.
• Brute force attack– This method is similar to the dictionary attack. Brute force attacks use algorithms that combine alpha-numeric characters and symbols to come up with passwords for the attack. For example, a password of the value “password” can also be tried as p@$$word using the brute force attack.
• Rainbow table attack– This method uses pre-computed hashes. Let’s assume that we have a database which stores passwords as md5 hashes. We can create another database that has md5 hashes of commonly used passwords. We can then compare the password hash we have against the stored hashes in the database. If a match is found, then we have the password.
• Guess– As the name suggests, this method involves guessing. Passwords such as qwerty, password, admin, etc. are commonly used or set as default passwords. If they have not been changed or if the user is careless when selecting passwords, then they can be easily compromised.
• Spidering– Most organizations use passwords that contain company information. This information can be found on company websites, social media such as facebook, twitter, etc. Spidering gathers information from these sources to come up with word lists. The word list is then used to perform dictionary and brute force attacks.

Spidering sample dictionary attack wordlist

Password cracking tool

These are software programs that are used to crack user passwords. We already looked at a similar tool in the above example on password strengths. The website www.md5this.com uses a rainbow table to crack passwords. We will now look at some of the commonly used tools

John the Ripper

John the Ripper uses the command prompt to crack passwords. This makes it suitable for advanced users who are comfortable working with commands. It uses to wordlist to crack passwords. The program is free, but the word list has to be bought. It has free alternative word lists that you can use. Visit the product website https://www.openwall.com/john/ for more information and how to use it.

Cain & Abel

Cain & Abel runs on windows. It is used to recover passwords for user accounts, recovery of Microsoft Access passwords; networking sniffing, etc. Unlike John the Ripper, Cain & Abel uses a graphic user interface. It is very common among newbies and script kiddies because of its simplicity of use. Visit the product website https://www.softpedia.com/get/Security/Decrypting-Decoding/Cain-and-Abel.shtml for more information and how to use it.

Ophcrack Pushim it a drama rar download full.

Ophcrack is a cross-platform Windows password cracker that uses rainbow tables to crack passwords. It runs on Windows, Linux and Mac OS. It also has a module for brute force attacks among other features. Visit the product website https://ophcrack.sourceforge.io/ for more information and how to use it.

Password Cracking Counter Measures

• An organization can use the following methods to reduce the chances of the passwords been cracked
• Avoid short and easily predicable passwords
• Avoid using passwords with predictable patterns such as 11552266.
• Passwords stored in the database must always be encrypted. For md5 encryptions, its better to salt the password hashes before storing them. Salting involves adding some word to the provided password before creating the hash.
• Most registration systems have password strength indicators, organizations must adopt policies that favor high password strength numbers.

Hacking Activity: Hack Now!

In this practical scenario, we are going to crack Windows account with a simple password. Windows uses NTLM hashes to encrypt passwords. We will use the NTLM cracker tool in Cain and Abel to do that.

Cain and Abel cracker can be used to crack passwords using;

• Dictionary attack
• Brute force
• Cryptanalysis

We will use the dictionary attack in this example. You will need to download the dictionary attack wordlist here 10k-Most-Common.zip

For this demonstration, we have created an account called Accounts with the password qwerty on Windows 7.

Password cracking steps

• Open Cain and Abel, you will get the following main screen

• Make sure the cracker tab is selected as shown above
• Click on the Add button on the toolbar.

• The following dialog window will appear

• The local user accounts will be displayed as follows. Note the results shown will be of the user accounts on your local machine.

• Right click on the account you want to crack. For this tutorial, we will use Accounts as the user account.

• The following screen will appear

• Right click on the dictionary section and select Add to list menu as shown above
• Browse to the 10k most common.txt file that you just downloaded

• Click on start button
• If the user used a simple password like qwerty, then you should be able to get the following results.

• Note: the time taken to crack the password depends on the password strength, complexity and processing power of your machine.
• If the password is not cracked using a dictionary attack, you can try brute force or cryptanalysis attacks.

Summary

• Password cracking is the art of recovering stored or transmitted passwords.
• Password strength is determined by the length, complexity, and unpredictability of a password value.
• Common password techniques include dictionary attacks, brute force, rainbow tables, spidering and cracking.
• Password cracking tools simplify the process of cracking passwords.

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The recent update to one of our oldest tools, Elcomsoft System Recovery, brought long-overdue compatibility with Windows systems that sign in with online authentication via Microsoft Account. While the tool can reset Microsoft Account passwords to allow instant logins to otherwise locked accounts, this is not the point. The point is that we have finally laid our hands on something that can help us break into a major online authentication service, the Microsoft Account.

For that to happen, Elcomsoft System Recovery can export the locally cached hash to the user’s Microsoft Account password for offline recovery. Running a GPU-assisted attack on the password (using Elcomsoft Distributed Password Recovery or similar tool) allows quickly enumerating the passwords with a combination of dictionary and brute-force attacks, in many cases resulting in the recovery of the original plain-text password. This isn’t exactly new, since the same thing could be done to local Windows accounts a decade ago. What DOES change though is the types and amounts of information can be accessed with the Microsoft Account password we’ve just recovered. This is one of those cases where a seemingly small change brings a plethora of new possibilities to digital forensics.

Microsoft Account: What’s Inside

Microsoft Account (previously known as Windows Live ID) is a single sign-on solution provided by Microsoft that covers a wide range of services. Since Windows 8, users are urged to enhance their Windows sign-on experience by adding Microsoft Account credentials to their local account. Once a Windows 8, 8.1 or Windows 10 user uses their Microsoft Account credentials to sign into Windows, they automatically gain access to a range of cloud backup and synchronization options via Microsoft OneDrive.

Logging in with Microsoft Account requires using email and password (as opposed to username and password used for local Windows accounts). username@live.com, username@hotmail.com and username@outlook.com can be used as Microsoft Account logins. Importantly, Microsoft Account is used as a single sign-on solution for a number of Microsoft services such as Hotmail, OneDrive, Skype, and employed by many third-party service providers authenticating via Microsoft Account.

So let’s see what all this means in practice.

BitLocker Recovery Keys

BitLocker encryption is secure. Full-disk encryption is activated automatically on devices equipped with TPM once the administrative user logs in with their Microsoft Account (yes, logging in with a Microsoft Account is a required pre-requisite for triggering automatic full-disk encryption on many tablets and ultrabooks). Breaking into a system like that would be extremely hard. Even running a cold-boot attack is not feasible as tablets have soldered memory chips that do not allow for this type of attacks.

However, Windows automatically creates BitLocker escrow keys, and automatically deposits them into the user’s Microsoft Account. Once you know the account password, you can access all BitLocker Recovery Keys from that account.

Personalization

First, let’s visit https://www.bing.com/account/personalization

We’re greeted with a notice that “When you’re signed into your Microsoft account, Microsoft services like Bing, MSN, and Cortana personalize your experience.” Which means that Microsoft collects some data, and that we could possibly access that data by logging in with the correct authentication credentials.

Bing

OneDrive

Using Microsoft Account on a Windows 8, 8.1 and Windows 10 PC allows users to access one of the best cloud backup systems for personal computers. Microsoft OneDrive is pre-installed with those versions of Windows, and is automatically authenticated with Microsoft Account credentials once the user signs in.

OneDrive automatically backs up any files (such as Office documents, pictures etc.) that are saved into its folder. Moreover, since Office 2013, users are encouraged to save their files to the cloud. Finally, it is possible to configure OneDrive to replace the default Documents location, in which case ANY file or document saved to that location will be automatically backed into the user’s OneDrive account.

OneDrive is extremely convenient. All that’s needed to gain access to the most recent copies of work documents on a new computer (running Windows 8, 8.1 or 10) is simply signing in with a Microsoft Account. Windows will automatically configure the desktop and sync everything stored in the user’s OneDrive account, including documents, settings etc.

OneDrive is not limited to just Windows computers. Android and iOS users can install OneDrive to enable automatic photo backup, while Windows Phone and Windows 10 Mobile have OneDrive pre-installed and pre-configured. Accessing OneDrive also gives access to synced information from other devices.

OneDrive is accessible at www.onedrive.com

Search History

In an attempt to compete with Google, Microsoft introduced Bing, its very own search engine. In the US, Microsoft pays users for searching with Bing (via the Bing Rewards program). Bing is the default search engine in Internet Explorer (Windows 8, 8.1) and Edge (Windows 10) Web browsers. Obviously, Bing is also the default on Windows Phone and Windows 10 Mobile devices.

According to CNN, Bing is used for about 20% of all search requests (the rest are served by Google and Yahoo). The use of Bing on desktop platforms is on the rise:

Bing stats

(Source: http://money.cnn.com/2015/04/16/technology/bing-usage/)

If a user has Bing as their search engine, we can then access their entire search history by visiting https://www.bing.com/profile/history and logging in with their Microsoft Account credentials:

Hotmail and Outlook.com

No, not that Outlook. Outlook.com (used to be Hotmail) is Microsoft’s competitor to Gmail. Users with username@live.com, username@hotmail.com and username@outlook.com accounts can access their mail by visiting www.outlook.com (also www.hotmail.com). By knowing the correct password, experts can have access to that email address as well:

Outlook

Reset Protection and Find My Device

One more thing that experts can do with Microsoft Account credentials is disabling Find My Phone and Reset Protection (account.microsoft.com/devices) functions of a Windows 10 Mobile device (that may come handy to help prevent suspects from remotely wiping seized smartphones).

One can also use “Find My Device” to discover the last location of the device.

Bing location history

Skype Timeline

Accessing user’s Skype communications timeline is possible via Skype for Web (web.skype.com)

Windows Phone and Windows 10 Mobile Backups

Windows smartphones (as well as Windows PCs since Windows 8) can back up their data into the cloud. While we can see those backups at https://onedrive.live.com/options/DeviceBackups, we don’t have the tools to actually download or decrypt their contents (at least not yet):

What we can do, however, is using Elcomsoft Phone Breaker to download certain types of data such as the user’s Contacts, Messages (SMS/text messages) and Notes. To do that, we would first need to run Elcomsoft Phone Breaker and log in to the Microsoft Account using the password we’ve just recovered:

Once the data is downloaded, we can use Elcomsoft Phone Viewer to access Contacts, Messages and Notes:

Messages:

Roadblock: Two-Factor Authentication

If enabled, two-factor authentication is a real roadblock to accessing cloud data even after recovering the correct password. Since forensic acquisition is normally performed on what’s considered to be a “new device”, the authentication system (if activated) will require verifying user’s identity with the second authentication factor. As such, one will need to have access to the secondary authentication factor in order to be able to authorize with Microsoft services.

So what is this “secondary authentication factor” we’ve been talking about? Let’s first see how two-factor authentication works in Microsoft Accounts.

Microsoft Account logins can be protected with two-factor authentication. Two-factor authentication can be used to protect access to Microsoft’s online services when such access is requested from a new device.

Microsoft uses a hybrid approach to two-factor authentication. The user can verify their identity by either approving the online verification request on a trusted device (this requires running the Microsoft Account app on an Android device), or by entering a code generated by the offline Authenticator app.

Online Authentication

The verification request can be pushed to an authorized Microsoft Account app running on a trusted PC or mobile device (again, the app is only available for Android devices). Once the request is approved with an app, the new device is added to the list of trusted devices.

Offline Authentication

Other platforms (Windows Phone 8 and 8.1, Windows 10 Mobile, iOS) can use either Microsoft Authenticator or Google Authenticator app for generating time-sensitive single-use codes. Interestingly, Microsoft’s and Google’s authentication apps are fully compatible to the point of being interchangeable, so one can use Google Authenticator on an Android device to generate offline authentication codes as well.

The difference between the two types of authentication is that the former requires an active Internet connection to receive authentication request, while the latter works completely offline. Both authentication methods can be active at the same time.

Two-Factor Authentication

Microsoft has compiled a comprehensive FAQ on how to configure authentication apps on the different mobile platforms at http://windows.microsoft.com/en-US/Windows/identity-verification-apps-faq

Verification methods can be configured at https://account.live.com/proofs/Manage

More about Microsoft two-step verification at http://windows.microsoft.com/en-us/windows/two-step-verification-faq

Microsoft allows using two-factor authentication to either protect all interactions with Microsoft Account. However, the user can choose to only enable this type of authentication for accessing sensitive information such as establishing Microsoft Account on a new Windows 10 device (which automatically enables full access to all files synced via Microsoft OneDrive, access to stored passwords, and the ability to restore backups including configuration settings and application data).

Extracting Microsoft Account Passwords

How To Crack Authentication Required Windstream Email

Microsoft Account passwords are not normally stored anywhere on the computer. As a result, simply extracting the password is not possible. However, in order to facilitate logins in the absence of network connectivity, Microsoft had to cache a password hash and store it on the computer. On the one hand, this allows users to log in to their computer while using it offline. On another hand, this also allows extracting the cached hash file and running an offline attack to recover the original password.

How To Crack Authentication Required Windstream Password

As you can see, recovering Microsoft Account passwords is a two-step process. During the first step, you will be extracting the password hash (and attempting a range of quick attacks to try some of the most common passwords). If the first step does not reveal the original password, you will need to attack the password offline using one or more computers equipped with GPU units. These attacks are straightforward and very well optimized, allowing to enumerate password combinations extremely quickly.

In order to extract the user’s Microsoft Account password, you would need two tools: Elcomsoft System Recovery and Elcomsoft Distributed Password Recovery.

1. To extract password hashes, run Elcomsoft System Recovery, select one or more accounts, and click Next. The tool will export the hashes into a file.
2. Now when you have the hash file (let’s say its name is “x.pwdump”), transfer it to the computer where you have Elcomsoft Distributed Password Recovery installed. Launch Elcomsoft Distributed Password Recovery and choose to recover a Windows account password. Select “x.pwdump” you’ve just exported. Configure attacks (dictionary, brute force, or combination). Schedule the task and wait while Elcomsoft Distributed Password Recovery enumerates all allowed password combinations.

Once Elcomsoft Distributed Password Recovery discovers the correct password, you can use it for logging in to the user’s online Microsoft Account.

How To Crack Authentication Required Windstream Router

Conclusion

As opposed to local Windows accounts, Microsoft Account credentials are stored remotely on Microsoft servers, and are authenticated online. Running a full-scale attack on a Microsoft Account password online is impossible. However, since Internet connectivity may not be always available to the user, a local copy of the password hash is stored locally to provide offline authentication. Elcomsoft System Recovery makes use of the local cache to extract password hashes, enabling experts to run a GPU-accelerated attack (with Elcomsoft Distributed Password Recovery) to recover the original password. With the original Microsoft Account password in hands, experts can access many types of data from the user’s online account.

How To Crack Authentication Required Windstream Account

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