hybriz

ages ago (2009) as a joke friends from #C@PTNET.ORG channel started doing an ascii little tree in various programming languages i did mine in assembly on 3 different ISAs: SPARC, PA-RISC and Alpha

i miss old commercial unix and all that free local privesc!

hybriz

/*

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.

hybriz

Camlistore Encryption on S3

Here's what I found out while setting up Camlistore to sync encrypted blobs to Amazon S3. This works for me, but I'm new to Camlistore so this might not be the best way to do it.

Amazon S3 Config

The encryption handler requires two buckets, one for metadata and one for blobs. In this example, I've created two buckets called my-camlistore-meta and my-camlistore-blob.

hybriz

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.lang.reflect.Field;
import java.net.SocketPermission;
import java.security.SecureRandom;
import java.util.HashSet;
import java.util.Random;

hybriz

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.HashSet;
import java.util.Set;

// billion-laughs-style DoS for java serialization
public class SerialDOS {

hybriz

This is an overview of the usefulness of PaX/grsecurity features for CopperheadOS especially when taking into account the overlap of the access control features with SELinux and that the Nexus line will be entirely 64-bit ARM. Note that it's missing most of the unnamed features without configuration options tied to them. A grsecurity kernel also comes with lots of security bug fixes backported from master, adapted from lkml submissions that were ignored, etc.

Previously, CopperheadOS used ports of PaX to the 3.4 Android kernels used by the Nexus 5 and Galaxy S4. The plan was to start from there, backporting from the PaX stable patches as needed along with reimplementing the relevant pieces of grsecurity without actually applying an old patch and backporting to it.

This is no longer the case for the published releases now that devices have moved to 64-bit ARM (which is not supported by PaX / grsecurity yet) and both the PaX and grsecurity stable patches have become private. There are still PaX ports for test

hybriz

# Example: ls 'C:\Windows\System32\*' -Include '*.dll' | Get-AuthenticodeSignature | Select -ExpandProperty SignerCertificate | Get-TBSHash

filter Get-TBSHash {
    [OutputType([String])]
    param (
        [Parameter(Mandatory, ValueFromPipeline)]
        [Security.Cryptography.X509Certificates.X509Certificate2]
        $Certificate
    )

hybriz

var ffi = require('ffi'),
    ref = require('ref'),
    Struct = require('ref-struct'),
    Library = require('./Library'),
    Type = ref.Type,
    NULL = ref.NULL,
    isNull = ref.isNull;


var groups = ['libs', 'types', 'structs', 'callbacks', 'enums'];

hybriz

function Get-InjectedThread
{
    <# 
    
    .SYNOPSIS 
    
    Looks for threads that were created as a result of code injection.
    
    .DESCRIPTION
    

hybriz

<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <!-- This inline task executes c# code. -->
  <!-- C:\Windows\Microsoft.NET\Framework64\v4.0.30319\msbuild.exe pshell.xml -->
   <!-- Author: Casey Smith, Twitter: @subTee -->
  <!-- License: BSD 3-Clause -->
  <PropertyGroup>
      <FunctionName Condition="'$(FunctionName)' == ''">None</FunctionName>
      <Cmd Condition="'$(Cmd)' == ''">None</Cmd>
    </PropertyGroup>
  <Target Name="Hello">