How to crack MD5 ciphertext

We have successfully exposed the website administrator account admin and the password "3acdbb255b45d296", which is a password encrypted by MD5.

MD5 ciphertext cracking can be said to be an essential link in the network. The current so-called MD5 cracking is basically based on database query, that is, an MD5 ciphertext database is generated based on commonly used password dictionaries, and then The ciphertext that needs to be cracked is queried in the database. If the MD5 value exists in the database, then the plaintext corresponding to the value is the password.

Many websites currently provide MD5 decryption services, but most of them charge for slightly more complex passwords.

Here we mainly introduce how to use the software MD5Crack4.1 to crack MD5 ciphertext. The software download address is http://down.51cto.com/data/1880454.

After running the software, you can set the language to Simplified Chinese in "options".

Enter the MD5 value to be cracked. If the value is correct, the black words "valid" will be displayed below the "Crack single ciphertext" input box .

In "Character Settings" you can choose "Use Dictionary" to crack. This cracking is faster, but it requires a good dictionary.

Here we choose "Use character set", which is to perform brute force cracking. When cracking, it is recommended to select "numbers" and "lowercase letters" first; if it cannot be cracked, you can add "uppercase letters"; if it doesn't work, just add "special characters". In short, when cracking, it should be easy first and then difficult, otherwise the cracking time will be too long.

Then you also need to set the length of the password to be cracked. I am generally used to setting the minimum length to 5 digits and the maximum length to 10 digits.

Finally, you need to set the number of threads used in the "Crack" item of "Settings". The default is only 2 threads. You can set it according to your own CPU. My core i3 2330 is set to 5 threads, CPU utilization is around 70%.

After everything is set up, you can start cracking. After a period of time, the password "0791idc" was successfully cracked.

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