pichichih0ll0wer's Introduction

PichichiH0ll0wer

PichichiH0ll0wer
About
Features
Injection methods
Installation
Usage
Credits

About

--== Process hollowing loader written in Nim for PEs only ==--

I built PichichiH0ll0wer to learn and contribute, sure. but also because I'm quite tired of shellcodes everywhere. Loading PEs might be less evasive, I know, but it's still efficient and more convenient than fighting to turn your PE payload into a shellcode each time (which not always works smoothly). Also, PichichiH0ll0wer has some features to protect your payload. Supports only x64 EXEs.

Features

Configurable builder
Payload encrypted and compressed (and optionally splitted) in the hollow loader
Supports splitted injection using multiple processes
Supports direct and indirect system calls
Hollower does not use the very suspicious call Nt/ZwUnmapViewOfSection
Can build EXE / DLL hollow loaders
Can block unsigned microsoft DLLs from being loaded to the hollowed process
Supports anti-debug techniques with the ability to die or to execute useless calculations ('troll' mode)
Obfuscated sleep using useless calculations
Supports execution within VEH
Supports command line Rc4 key to decrypt the payload

Injection methods

Simple hollowing: just the usual stuff: VirtualAlloc -> WriteProcessMemory -> GetThreadContext -> SetThreadContext -> ResumeThread.
Direct syscalls hollowing: using the great NimlineWhispers2.
Indirect syscalls hollowing: using the great NimlineWhispers3.
Splitted hollowing: each step of method (1) is occurring in a separate process with inherited handles.
Splitted hollowing: each step of method (2) is occurring in a separate process with inherited handles.
Splitted hollowing: each step of method (3) is occurring in a separate process with inherited handles.

Example of splitted hollowing of cscript.exe with cmd.exe that spawns whoami.exe:

Installation

Built with Nim 1.6.12, should be run on Windows only.

nimble install winim ptr_math nimprotect supersnappy argparse

Usage

Usage:
   [options] exe_file injection_method

Arguments:
  exe_file         Exe file to load
  injection_method Injection method

        1 - Simple hollowing
        2 - Direct syscalls hollowing
        3 - Indirect syscalls hollowing
        4 - Splitted hollowing using multiple processes
        5 - Splitted hollowing using multiple processes and direct syscalls
        6 - Splitted hollowing using multiple processes and indirect syscalls

Options:
  -h, --help
  -s, --sponsor=SPONSOR      Sponsor path to hollow (default: self hollowing)
  -a, --args=ARGS            Command line arguments to append to the hollowed process
  -f, --format=FORMAT        PE hollower format Possible values: [exe, dll] (default: exe)
  -e, --export=EXPORT        DLL export name (relevant only for Dll format) (default: DllRegisterServer)
  -b, --block                Block unsigned Microsoft Dlls in the hollowed process
  -p, --split                Split and hide the payload blob in hollower (takes long to compile!)
  -t, --sleep=SLEEP          Number of seconds to sleep before hollowing (default: 0)
  -g, --anti-debug=ANTI_DEBUG
                             Action to perform upon debugger detection Possible values: [none, die, troll] (default: none)
  -k, --key=KEY              RC4 key to [en/de]crypt the payload (supplied as a command line argument to the hollower)
  -v, --veh                  Hollow will occur within VEH
  -d, --debug                Compile as debug instead of release (loader is verbose)

Also, check the examples.

Credits

pichichih0ll0wer's People

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