There is no direct way how you could ever convert CRYPT8 archives to CRYPT5 format. However, the WhatsApp Tri-Crypt program can be run as background process and convert all newer CRYPT8, CRYPT7 and CRYPT5 archives to the original legacy CRYPT format, which then can be easily extracted with one of the available tools like WhatApp Xtract.
Convert WhatsApp Messenger message database backup to WhatsApp Messenger encrypted message database backup.
We have found one software suitable in our database for this conversion.
Google Android software - convert db.crypt8 to db.crypt5 on Android
An application for Google Android operating system, which is used to monitor and convert WhatsApp .crypt5, .crypt6, .crypt7 and .crypt8, .crypt9, .crypt10, .crypt11, .crypt12 backup files to .crypt legacy encryption and to .crypt5, .crypt6, .crypt7 and .crypt8, .crypt9, .crypt10, .crypt11, .crypt12 decryption / encryption. It is available in free and pro paid version.
Convert from db.crypt8 file
|Yes, WhatsApp Tri-Crypt (Omni-Crypt) supports db.crypt8 file conversion as a source file type.||Yes||No||No||No||No||No||No|
|Yes, WhatsApp Tri-Crypt (Omni-Crypt) supports db.crypt5 file conversion as a target file type.||Yes||No||No||No||No||No||No|
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.