Generate Allure Reports from pre-existing JSON Cucumber reports

[lightyou]

I'm using pytest_bdd for testing, generating some cucumber like json reports.

I would like to generate some allure reports from these preexisting reports, I can't find a way to convert cucumber reports to allure reports but it seems feasible.
In the same way it would allows to integrate Allure without changing the way the tests are done (without adding some pytest_bdd plugins to generate Allure reports).

Does anyone knows such a conversion tool?