Congelan celular android para acceder a datos protegidos.
Como parte de un experimento, investigadores de la Universidad de Erlangen, en Alemania, sometieron a un celular android de Samsung a temperaturas de 15 grados bajo cero para poder acceder a información protegida por contraseña.
El móvil estuvo en el congelador durante una hora. Luego, se tuvo que aplicar la función de ‘fastboot’, es decir, reinicio e inicio rápido. De esta manera, pudieron obtener los datos a través de la com****dora, a pesar de que se encontraban protegidos.
At the end of 2011, Google released version 4.0 of its Android operating system for smartphones. For the first time, Android smartphone owners were supplied with a disk encryption feature that transparently scrambles user partitions, thus protecting sensitive user information against targeted attacks that bypass screen locks. On the downside, scrambled telephones are a a nightmare for IT forensics and law enforcement, because once the power of a scrambled device is cut any chance other than bruteforce is lost to recover data.
We present FROST, a tool set that supports the forensic recovery of scrambled telephones. To this end we perform cold boot attacks against Android smartphones and retrieve disk encryption keys from RAM. We show that cold boot attacks against Android phones are generally possible for the first time, and we perform our attacks practically against Galaxy Nexus devices from Samsung. To break disk encryption, the bootloader must be unlocked before the attack because scrambled user partitions are wiped during unlocking. However, we show that cold boot attacks are more generic and allow to retrieve sensitive information, such as contact lists, visited web sites, and photos, directly from RAM, even though the bootloader is locked.
https://www1.informatik.uni-erlangen.de/frosthttp://www1.cs.fau.de/filepool/projects/frost/frost.pdf
