Backups

RSA factordb attack

Problem

The backup of the home directories might contain too much information.

399KB

backup.tar.gz

Bob

Factordb attack worked.

backup ~/Tools/RsaCtfTool/RsaCtfTool.py --publickey bob/.ssh/authorized_keys --private

$ chmod 600 .ssh/id_rsa
$ ssh -p2222 -i .ssh/id_rsa [email protected]
midnight{Turn_electricity_t0_h347}

Alice

Same thing for the first key, alice@work.

$ chmod 600 .ssh/id_rsa
$ ssh -p2222 -i .ssh/id_rsa [email protected]
midnight{factorization_for_the_Win}
Connection to backup-01.play.midnightsunctf.se closed.