将Pyinstaller打包后的exe还原成PYC 反编译到.py的Python源码_pyinstxtractor转换后源码

作者：我家小花儿 | 2024-08-08 20:23:10

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pyinstxtractor转换后源码

# 将Pyinstaller打包后的exe还原成.py的Python源码 #

当前目录下新建解包文件 pyinstxtractor.py

使用方法：命令行：

python pyinstxtractor.py xxx.exe

命令完成后当前就会有一个解包文件夹

如图

未加密的就会显示出各种*.py *.pyc代码或 *.pyd文件

pyc文件等同与源码可以还原出详细的注释和源代码，就是明码，无任何加密

pyd文件相当于二进制代码，反编译只能看到汇编的代码，破解难度较大

pyinstxtractor.py代码：如下


"""
PyInstaller Extractor v2.0 (Supports pyinstaller 6.6.0, 6.5.0, 6.4.0, 6.3.0, 6.2.0, 6.1.0, 6.0.0, 5.13.2, 5.13.1, 5.13.0, 5.12.0, 5.11.0, 5.10.1, 5.10.0, 5.9.0, 5.8.0, 5.7.0, 5.6.2, 5.6.1, 5.6, 5.5, 5.4.1, 5.4, 5.3, 5.2, 5.1, 5.0.1, 5.0, 4.10, 4.9, 4.8, 4.7, 4.6, 4.5.1, 4.5, 4.4, 4.3, 4.2, 4.1, 4.0, 3.6, 3.5, 3.4, 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   : 26-March-2020
Url    : https://github.com/extremecoders-re/pyinstxtractor
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)
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)
Version 2.0 (March 26, 2020)
-------------------------------------------------
- Project migrated to github
- Supports pyinstaller 3.6
- Added support for Python 3.7, 3.8
- The header of all extracted pyc's are now automatically fixed
"""
 
from __future__ import print_function
import os
import struct
import marshal
import zlib
import sys
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
        self.pycMagic = b'\0' * 4
        self.barePycList = [] # List of pyc's whose headers have to be fixed
 
 
    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))
 
        searchChunkSize = 8192
        endPos = self.fileSize
        self.cookiePos = -1
 
        if endPos < len(self.MAGIC):
            print('[!] Error : File is too short or truncated')
            return False
 
        while True:
            startPos = endPos - searchChunkSize if endPos >= searchChunkSize else 0
            chunkSize = endPos - startPos
 
            if chunkSize < len(self.MAGIC):
                break
 
            self.fPtr.seek(startPos, os.SEEK_SET)
            data = self.fPtr.read(chunkSize)
 
            offs = data.rfind(self.MAGIC)
 
            if offs != -1:
                self.cookiePos = startPos + offs
                break
 
            endPos = startPos + len(self.MAGIC) - 1
 
            if startPos == 0:
                break
 
        if self.cookiePos == -1:
            print('[!] Error : Missing cookie, unsupported pyinstaller version or not a pyinstaller archive')
            return False
 
        self.fPtr.seek(self.cookiePos + self.PYINST20_COOKIE_SIZE, os.SEEK_SET)
 
        if b'python' in self.fPtr.read(64).lower():
            print('[+] Pyinstaller version: 2.1+')
            self.pyinstVer = 21     # pyinstaller 2.1+
        else:
            self.pyinstVer = 20     # pyinstaller 2.0
            print('[+] Pyinstaller version: 2.0')
 
        return True
 
 
    def getCArchiveInfo(self):
        try:
            if self.pyinstVer == 20:
                self.fPtr.seek(self.cookiePos, os.SEEK_SET)
 
                # Read CArchive cookie
                (magic, lengthofPackage, toc, tocLen, pyver) = \
                struct.unpack('!8siiii', self.fPtr.read(self.PYINST20_COOKIE_SIZE))
 
            elif self.pyinstVer == 21:
                self.fPtr.seek(self.cookiePos, os.SEEK_SET)
 
                # Read CArchive cookie
                (magic, lengthofPackage, toc, tocLen, pyver, pylibname) = \
                struct.unpack('!8sIIii64s', self.fPtr.read(self.PYINST21_COOKIE_SIZE))
 
        except:
            print('[!] Error : The file is not a pyinstaller archive')
            return False
 
        self.pymaj, self.pymin = (pyver//100, pyver%100) if pyver >= 100 else (pyver//10, pyver%10)
        print('[+] Python version: {0}.{1}'.format(self.pymaj, self.pymin))
 
        # Additional data after the cookie
        tailBytes = self.fileSize - self.cookiePos - (self.PYINST20_COOKIE_SIZE if self.pyinstVer == 20 else self.PYINST21_COOKIE_SIZE)
 
        # Overlay is the data appended at the end of the PE
        self.overlaySize = lengthofPackage + tailBytes
        self.overlayPos = self.fileSize - self.overlaySize
        self.tableOfContentsPos = self.overlayPos + toc
        self.tableOfContentsSize = tocLen
 
        print('[+] Length of package: {0} bytes'.format(lengthofPackage))
        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))
 
            try:
                name = name.decode("utf-8").rstrip("\0")
            except UnicodeDecodeError:
                newName = str(uniquename())
                print('[!] Warning: File name {0} contains invalid bytes. Using random name {1}'.format(name, newName))
                name = newName
            
            # Prevent writing outside the extraction directory
            if name.startswith("/"):
                name = name.lstrip("/")
 
            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 _writeRawData(self, filepath, data):
        nm = filepath.replace('\\', os.path.sep).replace('/', os.path.sep).replace('..', '__')
        nmDir = os.path.dirname(nm)
        if nmDir != '' and not os.path.exists(nmDir): # Check if path exists, create if not
            os.makedirs(nmDir)
 
        with open(nm, 'wb') as f:
            f.write(data)
 
 
    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:
            self.fPtr.seek(entry.position, os.SEEK_SET)
            data = self.fPtr.read(entry.cmprsdDataSize)
 
            if entry.cmprsFlag == 1:
                try:
                    data = zlib.decompress(data)
                except zlib.error:
                    print('[!] Error : Failed to decompress {0}'.format(entry.name))
                    continue
                # Malware may tamper with the uncompressed size
                # Comment out the assertion in such a case
                assert len(data) == entry.uncmprsdDataSize # Sanity Check
 
            if entry.typeCmprsData == b'd' or entry.typeCmprsData == b'o':
                # d -> ARCHIVE_ITEM_DEPENDENCY
                # o -> ARCHIVE_ITEM_RUNTIME_OPTION
                # These are runtime options, not files
                continue
 
            basePath = os.path.dirname(entry.name)
            if basePath != '':
                # Check if path exists, create if not
                if not os.path.exists(basePath):
                    os.makedirs(basePath)
 
            if entry.typeCmprsData == b's':
                # s -> ARCHIVE_ITEM_PYSOURCE
                # Entry point are expected to be python scripts
                print('[+] Possible entry point: {0}.pyc'.format(entry.name))
 
                if self.pycMagic == b'\0' * 4:
                    # if we don't have the pyc header yet, fix them in a later pass
                    self.barePycList.append(entry.name + '.pyc')
                self._writePyc(entry.name + '.pyc', data)
 
            elif entry.typeCmprsData == b'M' or entry.typeCmprsData == b'm':
                # M -> ARCHIVE_ITEM_PYPACKAGE
                # m -> ARCHIVE_ITEM_PYMODULE
                # packages and modules are pyc files with their header intact
 
                # From PyInstaller 5.3 and above pyc headers are no longer stored
                # https://github.com/pyinstaller/pyinstaller/commit/a97fdf
                if data[2:4] == b'\r\n':
                    # < pyinstaller 5.3
                    if self.pycMagic == b'\0' * 4: 
                        self.pycMagic = data[0:4]
                    self._writeRawData(entry.name + '.pyc', data)
 
                else:
                    # >= pyinstaller 5.3
                    if self.pycMagic == b'\0' * 4:
                        # if we don't have the pyc header yet, fix them in a later pass
                        self.barePycList.append(entry.name + '.pyc')
 
                    self._writePyc(entry.name + '.pyc', data)
 
            else:
                self._writeRawData(entry.name, data)
 
                if entry.typeCmprsData == b'z' or entry.typeCmprsData == b'Z':
                    self._extractPyz(entry.name)
 
        # Fix bare pyc's if any
        self._fixBarePycs()
 
 
    def _fixBarePycs(self):
        for pycFile in self.barePycList:
            with open(pycFile, 'r+b') as pycFile:
                # Overwrite the first four bytes
                pycFile.write(self.pycMagic)
 
 
    def _writePyc(self, filename, data):
        with open(filename, 'wb') as pycFile:
            pycFile.write(self.pycMagic)            # pyc magic
 
            if self.pymaj >= 3 and self.pymin >= 7:                # PEP 552 -- Deterministic pycs
                pycFile.write(b'\0' * 4)        # Bitfield
                pycFile.write(b'\0' * 8)        # (Timestamp + size) || hash 
 
            else:
                pycFile.write(b'\0' * 4)      # Timestamp
                if self.pymaj >= 3 and self.pymin >= 3:
                    pycFile.write(b'\0' * 4)  # Size parameter added in Python 3.3
 
            pycFile.write(data)
 
 
    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
 
            pyzPycMagic = f.read(4) # Python magic value
 
            if self.pycMagic == b'\0' * 4:
                self.pycMagic = pyzPycMagic
 
            elif self.pycMagic != pyzPycMagic:
                self.pycMagic = pyzPycMagic
                print('[!] Warning: pyc magic of files inside PYZ archive are different from those in CArchive')
 
            # Skip PYZ extraction if not running under the same python version
            if self.pymaj != sys.version_info.major or self.pymin != sys.version_info.minor:
                print('[!] Warning: This script is running in a different Python version than the one used to build the executable.')
                print('[!] Please run this script in Python {0}.{1} to prevent extraction errors during unmarshalling'.format(self.pymaj, self.pymin))
                print('[!] Skipping pyz extraction')
                return
 
            (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 = fileName.decode('utf-8')
                except:
                    pass
 
                # Prevent writing outside dirName
                fileName = fileName.replace('..', '__').replace('.', os.path.sep)
 
                if ispkg == 1:
                    filePath = os.path.join(dirName, fileName, '__init__.pyc')
 
                else:
                    filePath = os.path.join(dirName, fileName + '.pyc')
 
                fileDir = os.path.dirname(filePath)
                if not os.path.exists(fileDir):
                    os.makedirs(fileDir)
 
                try:
                    data = f.read(length)
                    data = zlib.decompress(data)
                except:
                    print('[!] Error: Failed to decompress {0}, probably encrypted. Extracting as is.'.format(filePath))
                    open(filePath + '.encrypted', 'wb').write(data)
                else:
                    self._writePyc(filePath, 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()
'运行

PYC文件解密方法：

用 uncompyle6 反编译

命令行：


# 安装反编译工具
pip install uncompyle6
 
# 反编译到当前目录.下
uncompyle6 test.pyc -o .

打开文件后直接看到源码

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