TL;DR Have a look to https://github.com/ShutdownRepo/Exegol
Why ? I’m sure you have already been in the same situation than me. You’re working at a client’s office for a penetration test, a tight time slot for your tests, no downtime. You arrive a little late in the morning (thanks to the strikes) and your virtual machine containing all your tools doesn’t want to start (I knew I shouldn’t have play with my bootloader yesterday night tss).