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Any password with more than 7 digits is divided into several parts with 7 as the unit, and finally the password with less than 7 digits is filled with 0 to 7 digits, and then finally combined into a hash through the encryption operation. LM is also called LanManager, which is an ancient and fragile password encryption method for Windows. Vista free (461MB) is free to crack the hash password of Vista, and Vista special (8.0GB) needs to be purchased. There are about 7 trillion combinations in the table, 5*10 to the 12th power (or 2 to the 92th power) password, the table needs to spend Money to buy. XP special expansion table 7.5GB, including up to 14 uppercase and lowercase letters, numbers, and the following 33 special characters (!"#$%&'()*+,-./: <=& ~) is composed of 96% of the LanManager table. However, since the table becomes twice as large, if your computer has more than 1GB of RAM space, its cracking speed is 4 times that of the previous one. The alphanumeric table 5k is 703MB in size and contains 99.9% of the LanManager tables in the passwords of all alphanumeric combinations. Since the LanManager hash table is also case-insensitive, the combination of 80 billion in the table is equivalent to 12*10 to the 11th power (or 2 to the 83th power) passwords, so it is also called an "alphanumeric table" 10K".Ġ123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ Since the LanManager hash table cuts the password into two copies of 7 characters each, we can use this table to crack passwords between 1 and 14. These are passwords composed of uppercase and lowercase letters and numbers (about 80 billion combinations). OPHCRACK VISTA SPECIAL NT HASH TABLE DOWNLOAD PLUSIn one sentence, the table is generated with uppercase and lowercase letters plus numbers, with a size of 388MB, and contains 99.9% of the LanManager tables in all alphanumeric passwords. OPHCRACK VISTA SPECIAL NT HASH TABLE DOWNLOAD SOFTWAREIn the process, I downloaded the Ophcrack software and source code, as well as the rainbow table provided by Ophcrack ( ), by checking we know that Ophcrack provides three free rainbow tables:ġ23456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ Through the above three steps, I once again classified the data and downloaded the tool software. (5) At present, relevant research materials on Ophcrack and rainbow tables. (3) The definition and explanation of the rainbow table in English: We analyzed and sorted out other people’s blogs and published articles, and finally obtained the following information and materials: Through the above two articles, we learned that Ophcrack needs to use rainbow tables, rainbow table generation, and other information. Followed by two technical articles about Ophcrack: Du Li's translation of "A tool for security experts to understand rainbow hash table cracking tools" ( ), nickname "Use a combination of Rainbow tables and Ophcrack to crack Windows passwords" written for "Finding the beginning of life" ( ). Ophcrack is a tool that uses rainbow tables to crack Windows passwords. ![]()
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