Official website download:
https://www.navicat.com.cn/download/navicat-premium
Baidu cloud disk fast track:
Navicat Premium 12.0.18 Simplified Chinese 64-bit , extraction password: fb3y
Navicat Premium 12.0.18 Simplified Chinese 32-bit , Extract the password: xqrk
Press the Win key and the R key to open the run and enter cmd and press Enter or right-click the Win10 start menu to open the command prompt or the command prompt (administrator), it is recommended to use the command prompt (administrator) is the most secure.
1. First use the cd command to switch to the current Navicat Premium 12 crack patch folder location, such as cd G:\Program Files\navicat\navicat pj;
2. Use Patch.exe to patch Navicat's main program, navicat.exe, Replace the public key and execute the Patch.exe <navicat.exe path> command.
For example, Patch.exe "G:\Program Files\navicat\Navicat Premium 12\navicat.exe", then the corresponding private key file RegPrivateKey.pem will be generated in the current directory;
3. Use Keygen.exe to generate the registration code of Navicat 12 , execute the Keygen.exe RegPrivateKey.pem command, enter the user name and organization name according to the prompt, and a registration code will be generated.
4. Open navicat.exe, and enter the generated registration code.
Operation diagram: 
Crack toolkit:http://www.webyang.net/Html/web/article_362.html