SMShell - Send Commands And Receive Responses Over SMS From Mobile Broadband Capable Computers

PoC for an SMS-based shell. Send commands and receive responses over SMS from mobile broadband capable computers.

This tool came as an insipiration during a research on eSIM security implications led by Markus Vervier, presented at Offensivecon 2023

Disclaimer

This is not a complete C2 but rather a simple Proof of Concept for executing commands remotely over SMS.

Requirements

For the shell to work you need to devices capable of sending SMS. The victim's computer should be equiped with WWAN module with either a physical SIM or eSIM deployed.

On the operator's end, two tools are provided:

• .NET binary which uses an embedded WWAN module
• Python script which uses an external Huaweu MiFi thourgh its API

Of course, you could in theory use any online SMS provider on the operator's end via their API.

Usage

On the victim simply execute the client-agent.exe binary. If the agent is compiled as a Console Application you should see some verbose messages. If it's compiled as a Windows Application (best for real engagements), there will be no GUI.

The operator must specify the victim's phone number as a parameter:

server-console.exe +306912345678

Whereas if you use the python script you must additionally specify the MiFi details:

python3 server-console.py --mifi-ip 192.168.0.1 --mifi-username admin --mifi-password 12345678 --number +306912345678 -v

A demo as presented by Markus at Offensive is shown below. On the left is the operator's VM with a MiFi attached, whereas on the right window is client agent.

Z9 - PowerShell Script Analyzer

Abstract

This tools detects the artifact of the PowerShell based malware from the eventlog of PowerShell logging.
Online Demo

Install

git clone https://github.com/Sh1n0g1/z9

How to use

usage: z9.py [-h] [--output OUTPUT] [-s] [--no-viewer] [--utf8] input

positional arguments:
  input                 Input file path

options:
  -h, --help            show this help message and exit
  --output OUTPUT, -o OUTPUT
                        Output file path
  -s, --static          Enable Static Analysis mode
  --no-viewer           Disable opening the JSON viewer in a web browser
  --utf8                Read scriptfile in utf-8 (deprecated)

Analyze Event Logs (Recommended)

python z9.py <input file> -o <output json>
python z9.py <input file> -o <output json> --no-viewer

Example)

python z9.py util\log\mwpsop.xml -o sample1.json

Analyze PowerShell File Statically

• This approach will only do the static analysis and may not provide a proper result especially when the sample is obfuscated.

python z9.py <input file> -o <output json> -s
python z9.py <input file> -o <output json> -s --utf8
python z9.py <input file> -o <output json> -s --no-viewer

Example)

python z9.py malware.ps1 -o sample1.json -s

How to prepare the XML file

Enable PowerShell Logging

1. Right-click and merge this registry file:util/enable_powershell_logging.reg .
2. Reboot the PC
3. All powershell execution will be logged in eventlog

Export Eventlog to XML

1. Execute this batch file:util/collect_psevent.bat .
2. The XML files will be created under util/log directory.
3. Both XML file can be parsed by this tool.

How to Delete the Existing Eventlog

• Execute this batch file:util/collect_psevent.bat with "Run as Admin"

Authors

hanataro-miz
si-tm
take32457
Bigdrea6
azaberrypi
Sh1n0g1

Cybercriminals Using PowerShell to Steal NTLMv2 Hashes from Compromised Windows

HTTP-Shell - MultiPlatform HTTP Reverse Shell

HTTP-Shell is Multiplatform Reverse Shell. This tool helps you to obtain a shell-like interface on a reverse connection over HTTP. Unlike other reverse shells, the main goal of the tool is to use it in conjunction with Microsoft Dev Tunnels, in order to get a connection as close as possible to a legitimate one.

This shell is not fully interactive, but displays any errors on screen (both Windows and Linux), is capable of uploading and downloading files, has command history, terminal cleanup (even with CTRL+L), automatic reconnection and movement between directories.

Requirements

• Python 3 for Server
• Install requirements.txt
• Bash for Linux Client
• PowerShell 4.0 or greater for Windows Client

Download

It is recommended to clone the complete repository or download the zip file. You can do this by running the following command:

git clone https://github.com/JoelGMSec/HTTP-Shell

Usage

Experts Uncover Weaknesses in PowerShell Gallery Enabling Supply Chain Attacks

pyFUD - Multi Clients FUD Reverse Shell

python3 based multi clients reverse shell.

Warning:

1. Don't Upload Any Payloads To VirusTotal.com Bcz This tool will not work
   with Time.
2. Virustotal Share Signatures With AV Comapnies.
3. Again Don't be an Idiot!

Installation:

1. git clone https://github.com/machine1337/pyFUD
2. python3 server.py (enter your ip,port and start the server)
3. client.py (Edit IP AND PORT To Put Your Own IP,Port)

Usage:

1. python3 server.py
2. Now Compile client.py to exe (make sure change ip and port in it)

Features:

1. Very Simple And Fully Undectable Reverse Shell
2. Multi Client Handling
3. Persistent  Shell
3. auto-reconnect
5. U can Convert client.py to exe using pyinstaller tool in windows.

Warning:

Use this tool Only for Educational Purpose And I will Not be Responsible For ur cruel act.

Bashfuscator - A Fully Configurable And Extendable Bash Obfuscation Framework

Documentation

What is Bashfuscator?

Bashfuscator is a modular and extendable Bash obfuscation framework written in Python 3. It provides numerous different ways of making Bash one-liners or scripts much more difficult to understand. It accomplishes this by generating convoluted, randomized Bash code that at runtime evaluates to the original input and executes it. Bashfuscator makes generating highly obfuscated Bash commands and scripts easy, both from the command line and as a Python library.

The purpose of this project is to give Red Team the ability to bypass static detections on a Linux system, and the knowledge and tools to write better Bash obfuscation techniques.

This framework was also developed with Blue Team in mind. With this framework, Blue Team can easily generate thousands of unique obfuscated scripts or commands to help create and test detections of Bash obfuscation.

Media/slides

This is a list of all the media (i.e. youtube videos) or links to slides about Bashfuscator.

• Bsides Charm

Payload support

Though Bashfuscator does work on UNIX systems, many of the payloads it generates will not. This is because most UNIX systems use BSD style utilities, and Bashfuscator was built to work with GNU style utilities. In the future BSD payload support may be added, but for now payloads generated with Bashfuscator should work on GNU Linux systems with Bash 4.0 or newer.

Installation & Requirements

Bashfuscator requires Python 3.6+.

On a Debian-based distro, run this command to install dependencies:

sudo apt-get update && sudo apt-get install python3 python3-pip python3-argcomplete xclip

On a RHEL-based distro, run this command to install dependencies:

sudo dnf update && sudo dnf install python3 python3-pip python3-argcomplete xclip

Then, run these commands to clone and install Bashfuscator:

git clone https://github.com/Bashfuscator/Bashfuscator
cd Bashfuscator
python3 setup.py install --user

Only Debian and RHEL based distros are supported. Bashfuscator has been tested working on some UNIX systems, but is not supported on those systems.

Example Usage

For simple usage, just pass the command you want to obfuscate with -c, or the script you want to obfuscate with -f.

$ bashfuscator -c "cat /etc/passwd"
[+] Mutators used: Token/ForCode -> Command/Reverse
[+] Payload:

   ${@/l+Jau/+<b=k } p''"r"i""n$'t\u0066'  %s  "$(      ${*%%Frf\[4?T2   }  ${*##0\!j.G }   "r"'e'v <<< '   "} ~@{$"   ")  }  j@C`\7=-k#*{$   "}   ,@{$"  ; }  ;   } ,,*{$  "}]  }   ,*{$  "}   f9deh`\>6/J-F{\,vy//@{$" niOrw$   } QhwV#@{$ [NMpHySZ{$"  s%  "f"'"'"'4700u\n9600u\r'"'"'$p  {   ;  }  ~*{$  "}  48T`\PJc}\#@{$"   1#31  "}  ,@{$"   }  D$y?U%%*{$ 0#84  *$   }   Lv:sjb/@{$   2#05   }   ~@{$   2#4   }*!{$  }   OGdx7=um/X@RA{\eA/*{$ 1001#2   }   Scnw:i/@{$  } ~~*{$  11#4   "} O#uG{\HB%@{$"   11#7 "} ^^@{$"  011#2   "}   ~~@{$" 11#3 }  L[\h3m/@{$  "}   ~@{$" 11#2 }  6u1N.b!\b%%*{$   }   YCMI##@{$   31#5 "} ,@{$" 01#7  }  (\}\;]\//*{$ }   %#6j/?pg%m/*{$   001#2  "}  6IW]\p*n%@{$"   }  ^^@{$ 21#7  } !\=jy#@{$  }   tz}\k{\v1/?o:Sn@V/*{$  11#5   ni   niOrw  rof ;   "}   ,,@{$"  } MD`\!\]\P%%*{$      )  }@{$   a   }  ogt=y%*{$ "@$" /\   }   {\nZ2^##*{$    \   *$  c  }@{$  }   h;|Yeen{\/.8oAl-RY//@{$   p  *$  "}@{$"  t   }  zB(\R//*{$  } mX=XAFz_/9QKu//*{$  e   *$  s  } ~~*{$  d   }  ,*{$   }  2tgh%X-/L=a_r#f{\//*{$   w }  {\L8h=@*##@{$   "}   W9Zw##@{$"  (=NMpHySZ    ($"  la'"'"''"'"'"v"'"'"''"'"''"'"'541\'"'"'$  } &;@0#*{$ '   "${@}" "${@%%Ij\[N   }"    ${@~~  }   )"  ${!*} |   $@  $'b\u0061'''sh   ${*//J7\{=.QH   }  

[+] Payload size: 1232 characters

You can copy the obfuscated payload to your clipboard with --clip, or write it to a file with -o.

For more advanced usage, use the --choose-mutators flag, and specify exactly what obfuscation modules, or Mutators, you want to use in what order. Use also the -s argument to control the level of obfuscation used.

bashfuscator -c "cat /etc/passwd" --choose-mutators token/special_char_only compress/bzip2 string/file_glob -s 1
[+] Payload:

"${@#b }"  "e"$'\166'"a""${@}"l "$(  ${!@}m''$'k\144'''ir -p '/tmp/wW'${*~~} ;$'\x70'"${@/AZ }"rin""tf  %s  'MxJDa0zkXG4CsclDKLmg9KW6vgcLDaMiJNkavKPNMxU0SJqlJfz5uqG4rOSimWr2A7L5pyqLPp5kGQZRdUE3xZNxAD4EN7HHDb44XmRpN2rHjdwxjotov9teuE8dAGxUAL'>  '/tmp/wW/?
??';  prin${@#K. }tf %s  'wYg0iUjRoaGhoNMgYgAJNKSp+lMGkx6pgCGRhDDRGMNDTQA0ABoAAZDQIkhCkyPNIm1DTQeppjRDTTQ8D9oqA/1A9DjGhOu1W7/t4J4Tt4fE5+isX29eKzeMb8pJsPya93'  >  '/tmp/wW/???
' "${@,, }"  &&${*}pri''\n${*,}tf %s 'RELKWCoKqqFP5VElVS5qmdRJQelAziQTBBM99bliyhIQN8VyrjiIrkd2LFQIrwLY2E9ZmiSYqay6JNmzeWAklyhFuph1mXQry8maqHmtSAKnNr17wQlIXl/ioKq4hMlx76' >'/tmp/wW/??

';"${@,  }" $'\x70'rintf  %s 'clDkczJBNsB1gAOsW2tAFoIhpWtL3K/n68vYs4Pt+tD6+2X4FILnaFw4xaWlbbaJBKjbGLouOj30tcP4cQ6vVTp0H697aeleLe4ebnG95jynuNZvbd1qiTBDwAPVLT   tCLx' >'/tmp/wW/?

?' ;  ${*/~} p""${@##vl  }ri""n''tf %s  '  pr'"'"'i'"'"'$'"'"'n\x74'"'"'f %s  "$( prin${*//N/H  }tf  '"'"'QlpoOTFBWSZTWVyUng4AA3R/gH7z/+Bd/4AfwAAAD8AAAA9QA/7rm7NzircbE1wlCTBEamT1PKekxqYIA9TNQ' >'/tmp/wW/????'  "${@%\`  }"  ;p''r""i$'\x6e'''$'\164'"f" %s 'puxuZjSK09iokSwsERuYmYxzhEOARc1UjcKZy3zsiCqG5AdYHeQACRPKqVPIqkxaQnt/RMmoLKqCiypS0FLaFtirJFqQtbJLUVFoB/qUmEWVKxVFBYjHZcIAYlVRbkgWjh'  >'/tmp/wW/?


'  ${*};"p"rin''$'\x74f' %s  'Gs02t3sw+yFjnPjcXLJSI5XTnNzNMjJnSm0ChZQfSiFbxj6xzTfngZC4YbPvaCS3jMXvYinGLUWVfmuXtJXX3dpu379mvDn917Pg7PaoCJm2877OGzLn0y3FtndddpDohg'>'/tmp/wW/?
?
' && "${@^^ }"  pr""intf  %s  'Q+kXS+VgQ9OklAYb+q+GYQQzi4xQDlAGRJBCQbaTSi1cpkRmZlhSkDjcknJUADEBeXJAIFIyESJmDEwQExXjV4+vkDaHY/iGnNFBTYfo7kDJIucUES5mATqrAJ/KIyv1UV'> '/tmp/wW/
???'  ${*^}; ${!@}  "${@%%I  }"pri""n$'\x74f' %s '1w6xQDwURXSpvdUvYXckU4UJBclJ4OA'"'"'  |""b${*/t/\(  }a\se$'"'"'6\x34'"'"' -d| bu${*/\]%}nzi'"'"'p'"'"'${!@}2  -c)"  $@  |$   {@//Y^  } \ba\s"h"  ' >  '/tmp/wW/
??
' ${@%b  } ;  pr"i"\ntf  %s  'g8oZ91rJxesUWCIaWikkYQDim3Zw341vrli0kuGMuiZ2Q5IkkgyAAJFzgqiRWXergULhLMNTjchAQSXpRWQUgklCEQLxOyAMq71cGgKMzrWWKlrlllq1SXFNRqsRBZsKUE' >  '/tmp/wW/??
?'"${@//Y  }" ;$'c\141t' '/tmp/wW'/????  ${*/m};"${@,,  }"  $'\162'\m '/tmp/wW'/????  &&${@^ }rmd\ir  '/tmp/wW'; ${@^^  }   )"  "${@}"  

[+] Payload size: 2062 characters

For more detailed usage and examples, please refer to the documentation.

Extending the Framework

Adding new obfuscation methods to the framework is simple, as Bashfuscator was built to be a modular and extendable framework. Bashfuscator's backend does all the heavy lifting so you can focus on writing robust obfuscation methods (documentation on adding modules coming soon).

Authors and Contributers

• Andrew LeFevre (capnspacehook): project lead and creator
• Charity Barker (cpbarker): team member
• Nathaniel Hatfield (343iChurch): writing the RotN Mutator
• Elijah Barker (elijah-barker): writing the Hex Hash, Folder and File Glob Mutators
• Sam Kreischer: the awesome logo

Credits

• danielbohannon, whose excellent Invoke-Obfuscation and Invoke-DOSfuscation projects gave capnspacehook the idea to start writing Bashfuscator, and insight on how to write robust obfuscation methods.
• DissectMalware, whose tweets on Bash obfuscation formed the backbone of some Mutators, and provided ideas for other obfuscation techniques.
• ConsciousHacker, whose insight and advice has helped the team greatly.
• Bash logo was originally from https://github.com/odb/official-bash-logo.

Disclaimer

Bashfuscator was created for educational purposes only, use only on computers or networks you have explicit permission to do so. The Bashfuscator team is not responsible for any illegal or malicious acts preformed with this project.

Azure-AccessPermissions - Easy to use PowerShell script to enumerate access permissions in an Azure Active Directory environment

Easy to use PowerShell script to enumerate access permissions in an Azure Active Directory environment.

Background details can be found in the accompanied blog posts:

• Untangling Azure Active Directory Principals & Access Permissions
• Untangling Azure Active Directory Permissions II: Privileged Access

Requirements

To run this script you'll need these two PowerShell modules:

• Microsoft.Graph
• AADInternals
• AzureADPreview

All of these can be installed directly within PowerShell:

PS:> Install-Module Microsoft.Graph
PS:> Install-Module AADInternals
PS:> Install-Module AzureADPreview

Usage

First time use

The script uses a browser-based Login UI to connect to Azure. If you run the tool for the first time you might experience the following error

[*] Connecting to Microsoft Graph...
WARNING: WebBrowser control emulation not set for PowerShell or PowerShell ISE!
Would you like set the emulation to IE 11? Otherwise the login form may not work! (Y/N): Y
Emulation set. Restart PowerShell/ISE!

To solve this simply allow PowerShell to emulate the browser and rerun your command.

Example use

Import and run, no argumentes needed.

Note: On your first run you will likely have to authenticate twice (once Microsoft Graph and once against Azure AD Graph). I might wrap this into a single login in the future...

PS:> Import-Module .\Azure-AccessPermissions.ps1

Bootlicker - A Generic UEFI Bootkit Used To Achieve Initial Usermode Execution

bootlicker is a legacy, extensible UEFI firmware rootkit targeting vmware hypervisor virtual machines. It is designed to achieve initial code execution within the context of the windows kernel, regardless of security settings configured.

Architecture

bootlicker takes its design from the legacy CosmicStrain, MoonBounce, and ESPECTRE rootkits to achive arbitrary code excution without triggering patchguard or other related security mechanisms.

After initial insertion into a UEFI driver firmware using the the injection utility, the shellcodes EfiMain achieves execution as the host starts up, and inserts a hook into the UEFI firmware's ExitBootServices routine. The ExitBootServices routine will then, on execution, find the source caller of the function, and if it matches WinLoad.EFI, attempts to find the unexported winload.efi!OslArchTransferToKernel routine, which will allow us to att ack the booting kernel before it achieves its initial execution.

Once OslArchTransferToKernel executes, it will search for the ACPI.SYS driver, find the .rsrc PE section, and inject a small stager shellcode entrypoint called DrvMain to copy over a larger payload that will act as our kernel implant.

Resources

Entirely based upon d_olex / cr4sh's DmaBackdoorBoot

Epilogue

This code is apart of a larger project I've been working on that on / off in between burnout, like most of the concepts I've produced over the years under various aliases, will never see the light of day. Some of the code comments I've been to lazy to strip out that refer to unrelated functiaonlity, despite it being previously present. Do not expect this to work out of the box, some slight modifications are certainly necessary.

How to hack an unpatched Exchange server with rogue PowerShell code

Dangerous hole in Apache Commons Text – like Log4Shell all over again

S3 Ep103: Scammers in the Slammer (and other stories) [Audio + Text]

S3 Ep102.5: “ProxyNotShell” Exchange bugs – an expert speaks [Audio + Text]

8 months on, US says Log4Shell will be around for “a decade or longer”

Two different “VMware Spring” bugs at large – we cut through the confusion

S3 Ep64: Log4Shell again, scammers keeping busy, and Apple Home bug [Podcast + Transcript]

FTC threatens “legal action” over unpatched Log4j and other vulns

Log4Shell vulnerability Number Four: “Much ado about something”

S3 Ep63: Log4Shell (what else?) and Apple kernel bugs [Podcast+Transcript]

Log4Shell explained – how it works, why you need to know, and how to fix it

“Log4Shell” Java vulnerability – how to safeguard your servers