Bitlocker: TPM + Pre-Boot Pin

[Sondero]

Hello,
is there any possible way to attack a device with (Bitlocker) TPM+Preboot-Pin encryption ?

I took a physical image, but bitlocker2john doesnt give me a hash, and Passware also wouldn’t give me the option for a wordlist attack (only with memory dump, but i dont habe a dump or decrypted hiberfile.sys)

Thank

Best regrads
Sondero

[Lars]

There's no human entered password-hash to attack as the encryption keys are stored in the TPM and are released with the PIN.

[DanielG]

You probably need a hardware attack like described on https://dolosgroup.io/blog/2021/7/9/from...ny-network

[Sondero]

If i understand it correct, this attack only works if there is no pre-autentification needed

[DanielG]

Ah I see, you are right, the PIN requirement prevents this attack.