There is no direct way how you could ever convert db.crypt8 archives to crypt7 format. However, the WhatsApp Tri-Crypt program can be run as background process and convert all newer CRYPT8, CRYPT7 and CRYPT 5 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 found one software available in the database for this conversion.
Google Android software - convert db.crypt8 to crypt7 on Android
Android app used to decrypt and convert CRYPT files
Convert from db.crypt8 file format
|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 crypt7 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.