Raku 1

After a long break (again) I come back to write about Raku.

I spent quite some time on Ruby before moving to Perl, why ? Because Perl is more likely to be installed on a device I get access to, and why not Python ? Because Perl has better backward compatibility, I wont need to worry about whether its Python2 or Python3 and which subversion etc.

I heard about Raku before but didn’t really want to give it a try, it is neither as ubiquitous as Perl neither as famous as Python. But last week, I allowed myself to take a look and see how different the language is from Perl and if its worth it for me to spend time learning it and oh well it didn’t disappoint.

Janet

After a long time (almost a year!) I am writing again. It took me some time to get fully installed in Hong Kong (I moved from Belgium to Hong Kong on July 18).

I enjoyed 3 months of “holiday” there while looking for a job and now I am fully installed !

Anyway, this (very short) post is about a nice language I discovered few months ago named Janet (yes like in The Good Place).

Perl One Liner

Today I had to add a list of users to a service (knowbe4). I could have done it manually but I decided to use Perl to do it which (I think) made me gain a lot of time.

Instead of checking the current subscribed users, see which one to delete and which one to add manually (would have taken a lot of time since there are a lot of users already and even more users to add).

Basic Backup Powershell

Here is a basic backup script that I made from the powershell exam the second grade had today.

<#
    .SYNOPSIS
    Backup file from folder matching extension

    .DESCRIPTION
    Backup all the files from a 'WinPath' that match the given 'FileExtension'.
    The 'Backup' directory is created by default.
    You can also 'SearchBackup' in the 'Backup' directory with a regex.

    .PARAMETER WinPath
    Path to the directory to search in

    .PARAMETER FileExtension
    Extension of files to backup

    .PARAMETER Backup
    Create Backup directory (true by default)

    .PARAMETER SearchBackup
    Search pattern in backed-up files (false by default)
#>

param(
    [Parameter(mandatory=$true)]
    [string]$WinPath,

    [Parameter(mandatory=$true)]
    [string]$FileExtension,
    
    [bool]$Backup = $true,
    [string]$SearchBackup
)

# check if the directory exists
if (!(Test-Path -Path $WinPath -PathType Container)) {
    Write-Host "'$WinPath' does not exist or is not a directory"
    exit 1
}

# if SearchBackup then show files matching and quit
if ($SearchBackup -ne '') {
    if (!(Test-Path -Path "$WinPath" -PathType Container)) {
        Write-Host "'$WinPath' does not exist or is not a directory"
        exit 2
    }
    Get-ChildItem -Path "$WinPath/Backup" -File | ForEach-Object {
        if ($_.Name -match $FileExtension) {
            Write-Host "$_"
        }
    }
    exit
}

# create the Backup directory
if ($Backup) {
    $null = New-Item -Path "$WinPath/Backup" -ItemType Directory -Force
}

# add all files matching the extension to the Backup directory
$count = 0
Get-ChildItem -Path $WinPath –Recurse -File | ForEach-Object {
    if ($_.Extension -eq $FileExtension -and $_.DirectoryName -cnotmatch "Backup") {
        Move-Item -Path $_ -Destination "$WinPath/Backup"
        $count += 1
    }
}
Write-Host "$count file(s) backed-up"

I think it is mostly self explanatory^^

CTF Mr Robot 1

Simple writeup about the CTF Mr Robot 1. (Root-Me version)

Based on the show, Mr. Robot. This VM has three keys hidden in different locations. Your goal is to find all three. Each key is progressively difficult to find. The VM isn’t too difficult. There isn’t any advanced exploitation or reverse engineering. The level is considered beginner-intermediate.

First flag

• Go to url/robots.txt
  • fsocity.dic (wordlist for later)
  • key-1-of-3.txt (first flag)
• Go to url/key-1-of-3.txt

Yeah! You got the first one. You’re on the right way! Go on!

CliProtect Deployment

Today, the deployment of CliProtect was completed successfully. However, during the testing phase, we found an issue with the rdpclip.exe process. If this process was already running before my injector was executed, it caused a conflict.

I did not see that during the testing phase since between every attempt I was logged out not simply disconnected (which keeps processes running). But on that server the users aren’t directly logged out, there is a delay between the disconnection and the log out action.