| Latency Comparison Numbers (~2012) | |
| ---------------------------------- | |
| L1 cache reference 0.5 ns | |
| Branch mispredict 5 ns | |
| L2 cache reference 7 ns 14x L1 cache | |
| Mutex lock/unlock 25 ns | |
| Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
| Compress 1K bytes with Zippy 3,000 ns 3 us | |
| Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
| Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |
| # Powershell script to retrieve all appointments for a given date range using the Outlook Object Model | |
| param ( [DateTime] $rangeStart = [DateTime]::Now | |
| , [int] $weeks = 4) | |
| $outlook = New-Object -ComObject Outlook.Application | |
| # Ensure we are logged into a session | |
| $session = $outlook.Session | |
| $session.Logon() |
| #include <stdio.h> | |
| void DumpHex(const void* data, size_t size) { | |
| char ascii[17]; | |
| size_t i, j; | |
| ascii[16] = '\0'; | |
| for (i = 0; i < size; ++i) { | |
| printf("%02X ", ((unsigned char*)data)[i]); | |
| if (((unsigned char*)data)[i] >= ' ' && ((unsigned char*)data)[i] <= '~') { | |
| ascii[i % 16] = ((unsigned char*)data)[i]; |
I've recently shifted from a straight engineering job to a job with a "dev/ops" title. What I have discovered in operations land depresses me. The shoemaker's children are going unshod. Operations software is terrible.
What's driving me craziest right now is my monitoring system.
What I have right now is Nagios.
| <# | |
| .Synopsis | |
| Registers a HTTP prefix and listens for a HttpRequest | |
| .DESCRIPTION | |
| Simple PowerShell HTTP Server implementation to respond to a single HTTP request | |
| .EXAMPLE | |
| Get-HttpRequest -UriPrefix "http://+:80/TestUri/" -ResponseData (Get-Content C:\inetpub\wwwroot\index.html) | |
| .EXAMPLE | |
| Get-HttpRequest -UriPrefix "http://127.0.0.1/" -ResponseData "It Works...!" -ShowRequest | |
| #> |
| #!/bin/bash | |
| echo -n "Starting vault... " | |
| vault server -dev &> vault-server.log & | |
| vault_pid=$! | |
| echo OK | |
| shutdown() { trap "" EXIT; echo -n 'Shutting down... '; kill -9 $vault_pid; echo OK; exit $1; } | |
| trap "shutdown 0" EXIT | |
| trap "echo; echo 'Got interrupt signal!'; shutdown 255" INT |
| #region Module Builder | |
| $Domain = [AppDomain]::CurrentDomain | |
| $DynAssembly = New-Object System.Reflection.AssemblyName(([guid]::NewGuid().ToString())) | |
| $AssemblyBuilder = $Domain.DefineDynamicAssembly($DynAssembly, [System.Reflection.Emit.AssemblyBuilderAccess]::Run) # Only run in memory | |
| $ModuleBuilder = $AssemblyBuilder.DefineDynamicModule(([guid]::NewGuid().ToString()), $False) | |
| #endregion Module Builder | |
| #region STRUCTs | |
| #Order of creating these Structs is important | |
| #region MyStruct | |
| $Attributes = 'AutoLayout, AnsiClass, Class, Public, SequentialLayout, Sealed, BeforeFieldInit' |
| function Invoke-ExcelMacroPivot{ | |
| <# | |
| .AUTHOR | |
| Matt Nelson (@enigma0x3) | |
| .SYNOPSIS | |
| Pivots to a remote host by using an Excel macro and Excel's COM object | |
| .PARAMETER Target | |
| Remote host to pivot to | |
| .PARAMETER RemoteDocumentPath | |
| Local path on the remote host where the payload resides |
| function New-ActiveScriptEventConsumerClass { | |
| <# | |
| .SYNOPSIS | |
| Creates an ActiveScriptEventConsumer WMI class in the namespace of your choosing. | |
| .DESCRIPTION | |
| New-ActiveScriptEventConsumerClass creates a clone of the ActiveScriptEventConsumer WMI event consumer class using the class name and namespace name of your choosing. |
| '''checkaslrfiles.py: Check for files that opt into ASLR with /DYNAMICBASE, | |
| but do not have a relocation table to allow ASLR to function. | |
| usage: checkaslrfiles.py <dir> | |
| ex: checkaslr.py "C:\Program Files\" | |
| requires: pefile <https://github.com/erocarrera/pefile>, which should be | |
| installable via: pip install pefile | |
| ''' |
