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"""
PyInstaller Extractor v1.8 (Supports pyinstaller 3.2, 3.1, 3.0, 2.1, 2.0)
Author : Extreme Coders
E-mail : extremecoders(at)hotmail(dot)com
Web : https://0xec.blogspot.com
Date : 28-April-2017
Url : https://sourceforge.net/projects/pyinstallerextractor/
For any suggestions, leave a comment on
https://forum.tuts4you.com/topic/34455-pyinstaller-extractor/
This script extracts a pyinstaller generated executable file.
Pyinstaller installation is not needed. The script has it all.
For best results, it is recommended to run this script in the
same version of python as was used to create the executable.
This is just to prevent unmarshalling errors(if any) while
extracting the PYZ archive.
Usage : Just copy this script to the directory where your exe resides
and run the script with the exe file name as a parameter
C:\path\to\exe\>python pyinstxtractor.py <filename>
$ /path/to/exe/python pyinstxtractor.py <filename>
Licensed under GNU General Public License (GPL) v3.
You are free to modify this source.
CHANGELOG
================================================
Version 1.1 (Jan 28, 2014)
-------------------------------------------------
- First Release
- Supports only pyinstaller 2.0
Version 1.2 (Sept 12, 2015)
-------------------------------------------------
- Added support for pyinstaller 2.1 and 3.0 dev
- Cleaned up code
- Script is now more verbose
- Executable extracted within a dedicated sub-directory
(Support for pyinstaller 3.0 dev is experimental)
Version 1.3 (Dec 12, 2015)
-------------------------------------------------
- Added support for pyinstaller 3.0 final
- Script is compatible with both python 2.x & 3.x (Thanks to Moritz Kroll @ Avira Operations GmbH & Co. KG)
Version 1.4 (Jan 19, 2016)
-------------------------------------------------
- Fixed a bug when writing pyc files >= version 3.3 (Thanks to Daniello Alto: https://github.com/Djamana)
Version 1.5 (March 1, 2016)
-------------------------------------------------
- Added support for pyinstaller 3.1 (Thanks to Berwyn Hoyt for reporting)
Version 1.6 (Sept 5, 2016)
-------------------------------------------------
- Added support for pyinstaller 3.2
- Extractor will use a random name while extracting unnamed files.
- For encrypted pyz archives it will dump the contents as is. Previously, the tool would fail.
Version 1.7 (March 13, 2017)
-------------------------------------------------
- Made the script compatible with python 2.6 (Thanks to Ross for reporting)
Version 1.8 (April 28, 2017)
-------------------------------------------------
- Support for sub-directories in .pyz files (Thanks to Moritz Kroll @ Avira Operations GmbH & Co. KG)
"""
"""
Author: In Ming Loh
Email: inming.loh@countercept.com
Changes have been made to Version 1.8 (April 28, 2017).
CHANGELOG
================================================
- Function extractFiles(self, custom_dir=None) has been modfied to allow custom output directory.
"""
import os
import struct
import marshal
import zlib
import sys
import imp
import types
from uuid import uuid4 as uniquename
class CTOCEntry:
def __init__(self, position, cmprsdDataSize, uncmprsdDataSize, cmprsFlag, typeCmprsData, name):
self.position = position
self.cmprsdDataSize = cmprsdDataSize
self.uncmprsdDataSize = uncmprsdDataSize
self.cmprsFlag = cmprsFlag
self.typeCmprsData = typeCmprsData
self.name = name
class PyInstArchive:
PYINST20_COOKIE_SIZE = 24
PYINST21_COOKIE_SIZE = 24 + 64
MAGIC = b'MEI\014\013\012\013\016'
def __init__(self, path):
self.filePath = path
def open(self):
try:
self.fPtr = open(self.filePath, 'rb')
self.fileSize = os.stat(self.filePath).st_size
except:
print('[*] Error: Could not open {0}'.format(self.filePath))
return False
return True
def close(self):
try:
self.fPtr.close()
except:
pass
def checkFile(self):
print('[*] Processing {0}'.format(self.filePath))
self.fPtr.seek(self.fileSize - self.PYINST20_COOKIE_SIZE, os.SEEK_SET)
magicFromFile = self.fPtr.read(len(self.MAGIC))
if magicFromFile == self.MAGIC:
self.pyinstVer = 20
print('[*] Pyinstaller version: 2.0')
return True
self.fPtr.seek(self.fileSize - self.PYINST21_COOKIE_SIZE, os.SEEK_SET)
magicFromFile = self.fPtr.read(len(self.MAGIC))
if magicFromFile == self.MAGIC:
print('[*] Pyinstaller version: 2.1+')
self.pyinstVer = 21
return True
print('[*] Error : Unsupported pyinstaller version or not a pyinstaller archive')
return False
def getCArchiveInfo(self):
try:
if self.pyinstVer == 20:
self.fPtr.seek(self.fileSize - self.PYINST20_COOKIE_SIZE, os.SEEK_SET)
(magic, lengthofPackage, toc, tocLen, self.pyver) = \
struct.unpack('!8siiii', self.fPtr.read(self.PYINST20_COOKIE_SIZE))
elif self.pyinstVer == 21:
self.fPtr.seek(self.fileSize - self.PYINST21_COOKIE_SIZE, os.SEEK_SET)
(magic, lengthofPackage, toc, tocLen, self.pyver, pylibname) = \
struct.unpack('!8siiii64s', self.fPtr.read(self.PYINST21_COOKIE_SIZE))
except:
print('[*] Error : The file is not a pyinstaller archive')
return False
print('[*] Python version: {0}'.format(self.pyver))
self.overlaySize = lengthofPackage
self.overlayPos = self.fileSize - self.overlaySize
self.tableOfContentsPos = self.overlayPos + toc
self.tableOfContentsSize = tocLen
print('[*] Length of package: {0} bytes'.format(self.overlaySize))
return True
def parseTOC(self):
self.fPtr.seek(self.tableOfContentsPos, os.SEEK_SET)
self.tocList = []
parsedLen = 0
while parsedLen < self.tableOfContentsSize:
(entrySize, ) = struct.unpack('!i', self.fPtr.read(4))
nameLen = struct.calcsize('!iiiiBc')
(entryPos, cmprsdDataSize, uncmprsdDataSize, cmprsFlag, typeCmprsData, name) = \
struct.unpack( \
'!iiiBc{0}s'.format(entrySize - nameLen), \
self.fPtr.read(entrySize - 4))
name = name.decode('utf-8').rstrip('\0')
if len(name) == 0:
name = str(uniquename())
print('[!] Warning: Found an unamed file in CArchive. Using random name {0}'.format(name))
self.tocList.append( \
CTOCEntry( \
self.overlayPos + entryPos, \
cmprsdDataSize, \
uncmprsdDataSize, \
cmprsFlag, \
typeCmprsData, \
name \
))
parsedLen += entrySize
print('[*] Found {0} files in CArchive'.format(len(self.tocList)))
def extractFiles(self, custom_dir=None):
print('[*] Beginning extraction...please standby')
if custom_dir is None:
extractionDir = os.path.join(os.getcwd(), os.path.basename(self.filePath) + '_extracted')
if not os.path.exists(extractionDir):
os.mkdir(extractionDir)
os.chdir(extractionDir)
else:
if not os.path.exists(custom_dir):
os.makedirs(custom_dir)
os.chdir(custom_dir)
for entry in self.tocList:
basePath = os.path.dirname(entry.name)
if basePath != '':
if not os.path.exists(basePath):
os.makedirs(basePath)
self.fPtr.seek(entry.position, os.SEEK_SET)
data = self.fPtr.read(entry.cmprsdDataSize)
if entry.cmprsFlag == 1:
data = zlib.decompress(data)
assert len(data) == entry.uncmprsdDataSize
with open(entry.name, 'wb') as f:
f.write(data)
if entry.typeCmprsData == b'z':
self._extractPyz(entry.name)
def _extractPyz(self, name):
dirName = name + '_extracted'
if not os.path.exists(dirName):
os.mkdir(dirName)
with open(name, 'rb') as f:
pyzMagic = f.read(4)
assert pyzMagic == b'PYZ\0'
pycHeader = f.read(4)
if imp.get_magic() != pycHeader:
print('[!] Warning: The script is running in a different python version than the one used to build the executable')
print(' Run this script in Python{0} to prevent extraction errors(if any) during unmarshalling'.format(self.pyver))
(tocPosition, ) = struct.unpack('!i', f.read(4))
f.seek(tocPosition, os.SEEK_SET)
try:
toc = marshal.load(f)
except:
print('[!] Unmarshalling FAILED. Cannot extract {0}. Extracting remaining files.'.format(name))
return
print('[*] Found {0} files in PYZ archive'.format(len(toc)))
if type(toc) == list:
toc = dict(toc)
for key in toc.keys():
(ispkg, pos, length) = toc[key]
f.seek(pos, os.SEEK_SET)
fileName = key
try:
fileName = key.decode('utf-8')
except:
pass
destName = os.path.join(dirName, fileName.replace("..", "__"))
destDirName = os.path.dirname(destName)
if not os.path.exists(destDirName):
os.makedirs(destDirName)
try:
data = f.read(length)
data = zlib.decompress(data)
except:
print('[!] Error: Failed to decompress {0}, probably encrypted. Extracting as is.'.format(fileName))
open(destName + '.pyc.encrypted', 'wb').write(data)
continue
with open(destName + '.pyc', 'wb') as pycFile:
pycFile.write(pycHeader)
pycFile.write(b'\0' * 4)
if self.pyver >= 33:
pycFile.write(b'\0' * 4)
pycFile.write(data)
def main():
if len(sys.argv) < 2:
print('[*] Usage: pyinstxtractor.py <filename>')
else:
arch = PyInstArchive(sys.argv[1])
if arch.open():
if arch.checkFile():
if arch.getCArchiveInfo():
arch.parseTOC()
arch.extractFiles()
arch.close()
print('[*] Successfully extracted pyinstaller archive: {0}'.format(sys.argv[1]))
print('')
print('You can now use a python decompiler on the pyc files within the extracted directory')
return
arch.close()
if __name__ == '__main__':
main()
|
