In this video you will learn how to crack an application called EyeTwing. You have to use for cracking a tool called OllyDbg for open the.exe view the Assembly code. Follow the video, video is fast but if you follow perfect steps you can easily crack this exe. This Agreement covers only the version 1.10 of the OllyDbg and version 1.10 of the OllyDbg Plugin Development Kit. All other versions are covered by separate License Agreements. Many software manufacturers explicitly disallow you any attempts of disassembling, decompilation, reverse engineering or modification of their programs. Sep 12, 2018 If software or app is protected, then you must first remove that protection Unpacking. (Nowadays apps are protected by multiple layers of protection to protect it from reverse engineering) After removing the protection, load the software in the debugger (such as Ollydbg or IDA Pro). With the help of debugger make necessary changes in the program. Feb 15, 2011 Thats easy enough. If you press Ctrl-N (or right click and select 'Search for' followed by 'name (label) in current module') you are presented with a list of calls made by the crackme. You can then right click on GetDlgItemTextA and select 'set breakpoint on every reference'. We're ready to go.
- How To Crack Trial Software With Ollydbg Tutorial Beginners Download
- How To Crack Trial Software With Ollydbg Tutorial Beginners Tutorial
Registration
This software is a shareware. To use this program on a permanent basis or for commercial purposes, you should register it by sending filled registration form to Ollydbg@t-online.de. The registration is free of charge and assumes no financial or other obligations from either side - just be fair and let me know that you like this software. Even your personal data in the registration form is optional (use your nickname or pseudonym if you want).
If you use OllyDbg together with Randall Hyde's HLA (High Level Assembly), you don't need (but still allowed) to register.
When registering, you can subscribe for information (email) on the new versions of this program, including pricing, terms of support and list of new features. In this case you agree not to treat this information as a spam as long as number of letters does not exceed 4 each calendar year and they contain no advertisements from the third parties. If you no longer want to receive this information - well, just let me know, and I will immediately delete your address from my database.
Trademark information
All brand names and product names used in OllyDbg, accompanying files or in this help are trademarks, registered trademarks, or trade names of their respective holders. They are used for identification purposes only.
License Agreement
This License Agreement ('Agreement') accompanies the OllyDbg versions 1.10, OllyDbg Plugin Development Kit version 1.10 and related files ('Software'). By using the Software, you agree to be bound by all of the terms and conditions of the Agreement.
The Software is distributed 'as is', without warranty of any kind, expressed or implied, including, but not limited to warranty of fitness for any particular purpose. In no event will the Author be liable to you for any special, incidental, indirect, consequential or any other damages caused by the use, misuse, or the inability to use of the Software, including any lostprofits or lost savings, even if Author has been advised of the possibility of such damages.
The Software is owned by Oleh Yuschuk ('Author') and is Copyright (c) 2000-2004 Oleh Yuschuk. To use this Software on a permanent basis or for commercial purposes, you must register it by filling the supplied registration form and sending it to the Author. You don't need to register Software if you use it exclusively with Randall Hyde's High Level Assembly. If you are already a registered OllyDbg user, you don't need to re-register the Software again. If the Software is registered to a company or organization, any person within the company or organization has the right to use it at work. You may install the registered Software on any number of storage devices, like hard disks, floppy disks etc. and are allowed to make any number of backup copies of this Software.
You are not allowed to modify, decompile, disassemble or reverse engineer the Software except and only to the extent that such activity is expressly permitted by applicable law. You are not allowed to distribute or use any parts of the Software separately. You may make and distribute copies of this Software provided that a) the copy contains all files from the original distribution and these files remain unchanged; b) if you distribute any other files (for example, plugins) together with the Software, they must be clearly marked as such and the conditions of their use cannot be more restrictive than conditions of this Agreement; and c) you collect no fee (except for transport media, like CD or diskette), even if your distribution contains additional files.
You are allowed to develop and distribute your own plugins -- Dynamic Link Libraries that connect to the Software and make use of the functions implemented in the Software -- free of charge provided that a) your plugins contain no features that persuade or force user to register them, or limit functionality of unregistered plugins; b) you allow free distribution of your plugins on the conditions similar to that of the Software; and c) you collect no fee (except for transport media, like CD or diskette). If you want to develop commercial plugin, please contact Author for a special Agreement.
The distribution includes files PSAPI.DLL and DBGHELP.DLL that are the Microsoft(R) Redistributable files. These files should be installed only in the directory where the Software resides. You should use supplied PSAPI.DLL only on Windows NT(R) 4.0. You are not allowed to distribute PSAPI.DLL or DBGHELP.DLL separately from the Software.
This Agreement covers only the version 1.10 of the OllyDbg and version 1.10 of the OllyDbg Plugin Development Kit. All other versions are covered by separate License Agreements.
Fair use
Many software manufacturers explicitly disallow you any attempts of disassembling, decompilation, reverse engineering or modification of their programs. This restriction also covers all third-party dynamic-link libraries your application may use, including system libraries. If you have any doubts, contact the owner of copyright. The so called „fair use' clause can be misleading. You may want to discuss whether it applies in your case with competent lawyer.
Download
Download OllyDbg 1.10 (final version)
Download Plugin Development Kit 1.10 (requires OllyDbg 1.10)
Download free source of command line plugin (requires OllyDbg 1.08 or 1.10 and Borland's BCB 5.0)
Older versions
Download OllyDbg 1.08b (previous 'official' release)
Download Plugin Development Kit 1.08
Version 1.00 (mostly of historical value)
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.
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
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.
How To Crack Trial Software With Ollydbg Tutorial Beginners Download
Summary
How To Crack Trial Software With Ollydbg Tutorial Beginners Tutorial
- 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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