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python如何反编译exe文件为py文件-创新互联
这篇文章将为大家详细讲解有关python如何反编译exe文件为py文件，小编觉得挺实用的，因此分享给大家做个参考，希望大家阅读完这篇文章后可以有所收获。
我们用pyinstaller把朋友文件打包成exe文件，但有时候我们需要还原，我们可以用pyinstxtractor.py
用法：
python pyinstxtractor.py xxx.exe
之后得到一个这样结构的文件夹
--- xxx.exe_extracted -- out00-PYZ.pyz_extracted - 各种.pyc文件 -- out00-PYZ.pyz -- some -- others -- xxx(注意这些都是没后缀的)
然后再终端pip install uncompyle安装uncompyle，
然后就可以使用啦
uncompyle6 input.pyc > output.py
把pyc文件转换为py文件，希望对大家有帮助
最后贴上pyinstxtractor.py的代码
""" PyInstaller Extractor v1.9 (Supports pyinstaller 3.3, 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 : 29-November-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$ /path/to/exe/python pyinstxtractor.py 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) Version 1.9 (November 29, 2017) ------------------------------------------------- - Added support for pyinstaller 3.3 - Display the scripts which are run at entry (Thanks to Michael Gillespie @ malwarehunterteam for the feature request) """ from __future__ import print_function 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 # For pyinstaller 2.0 PYINST21_COOKIE_SIZE = 24 + 64 # For pyinstaller 2.1+ MAGIC = b'MEI\014\013\012\013\016' # Magic number which identifies pyinstaller 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)) # Check if it is a 2.0 archive 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 # pyinstaller 2.0 print('[*] Pyinstaller version: 2.0') return True # Check for pyinstaller 2.1+ before bailing out 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 # pyinstaller 2.1+ 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) # Read CArchive cookie (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) # Read CArchive cookie (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)) # Overlay is the data appended at the end of the PE 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): # Go to the table of contents self.fPtr.seek(self.tableOfContentsPos, os.SEEK_SET) self.tocList = [] parsedLen = 0 # Parse table of contents 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): print('[*] Beginning extraction...please standby') extractionDir = os.path.join(os.getcwd(), os.path.basename(self.filePath) + '_extracted') if not os.path.exists(extractionDir): os.mkdir(extractionDir) os.chdir(extractionDir) for entry in self.tocList: basePath = os.path.dirname(entry.name) if basePath != '': # Check if path exists, create if not 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) # Malware may tamper with the uncompressed size # Comment out the assertion in such a case assert len(data) == entry.uncmprsdDataSize # Sanity Check with open(entry.name, 'wb') as f: f.write(data) if entry.typeCmprsData == b's': print('[+] Possible entry point: {0}'.format(entry.name)) elif entry.typeCmprsData == b'z' or entry.typeCmprsData == b'Z': self._extractPyz(entry.name) def _extractPyz(self, name): dirName = name + '_extracted' # Create a directory for the contents of the pyz if not os.path.exists(dirName): os.mkdir(dirName) with open(name, 'rb') as f: pyzMagic = f.read(4) assert pyzMagic == b'PYZ\0' # Sanity Check pycHeader = f.read(4) # Python magic value 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))) # From pyinstaller 3.1+ toc is a list of tuples 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: # for Python > 3.3 some keys are bytes object some are str object fileName = key.decode('utf-8') except: pass # Make sure destination directory exists, ensuring we keep inside dirName 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) # Write pyc magic pycFile.write(b'\0' * 4) # Write timestamp if self.pyver >= 33: pycFile.write(b'\0' * 4) # Size parameter added in Python 3.3 pycFile.write(data) def main(): if len(sys.argv) < 2: print('[*] Usage: pyinstxtractor.py ') 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()
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