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Impacket-Get-NPUsers does not output hash of known vulnerable account. #1568

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sdcampbell opened this issue Jun 9, 2023 · 2 comments · May be fixed by #1867
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Impacket-Get-NPUsers does not output hash of known vulnerable account. #1568

sdcampbell opened this issue Jun 9, 2023 · 2 comments · May be fixed by #1867
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@alexisbalbachan
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bug Unexpected problem or unintended behavior medium Medium priority item

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@sdcampbell
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sdcampbell commented Jun 9, 2023 •
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Configuration

impacket version: v0.10.0
Python version: 3.11.2
Target OS: Kali

Debug Output With Command String

I can't include debug logs due to client data. There were not any errors.

Additional context

I had a list of domain users. I ran:

 impacket-GetNPUsers -usersfile domainusers.txt -request -format hashcat -outputfile logs/asreproast.log [domain]/

It failed to output a hash of a known asreproastable account. I was able get a hash when I re-ran the script without -usersfile and specified the vulnerable account, which was also in the usersfile. When it worked, the command was:

 impacket-GetNPUsers -request -format hashcat -outputfile logs/asreproast.log [domain]/[vulnerableaccount]

After running the preceding command I was prompted for a password. I pressed enter and got the hash.

Thank you
@Zamanry
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Zamanry commented Jun 11, 2023

Same issue? #1512

@sdcampbell
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Similar but not the same. In my case, the output file did not contain a hash. The pentest I'm on ends tomorrow, so please do let me know if there is any troubleshooting/debugging I can do before I lose access to this network environment.

@gabrielg5 gabrielg5 added bug Unexpected problem or unintended behavior medium Medium priority item labels Jun 15, 2023
@NuclearFizzler NuclearFizzler linked a pull request Dec 31, 2024 that will close this issue
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@alexisbalbachan alexisbalbachan

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GetNPUser.py: Single targets now correctly outputs hash to file NuclearFizzler/impacket
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@gabrielg5 @alexisbalbachan @sdcampbell @Zamanry