Support files larger than 2GiB, closes #61

PyInstaller 4.3 added support for CArchive sizes >2GiB & <4GiB

Details:
- https://pyinstaller.org/en/stable/CHANGES.html#id81
- https://github.com/pyinstaller/pyinstaller/commit/937d8a

README.md

@@ -2,7 +2,7 @@
 
 PyInstaller Extractor is a Python script to extract the contents of a PyInstaller generated executable file.
 
-The header of the pyc files are automatically fixed so that a Python bytecode decompiler will recognize it. The script can run on both Python 2.x and 3.x. PyInstaller versions 2.0, 2.1, 3.0, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 4.0, 4.1, 4.2, 4.3, 4.4, 4.5, 4.5.1, 4.6, 4.7, 4.8, 4.9, 4.10, 5.0, 5.0.1, 5.1, 5.2, 5.3, 5.4, 5.4.1, 5.5, 5.6, 5.6.1 are [tested](https://github.com/pyinstxtractor/pyinstxtractor-test-binaries) & supported. Probably will work with other versions too.
+The header of the pyc files are automatically fixed so that a Python bytecode decompiler will recognize it. The script can run on both Python 2.x and 3.x. PyInstaller versions 2.0, 2.1, 3.0, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 4.0, 4.1, 4.2, 4.3, 4.4, 4.5, 4.5.1, 4.6, 4.7, 4.8, 4.9, 4.10, 5.0, 5.0.1, 5.1, 5.2, 5.3, 5.4, 5.4.1, 5.5, 5.6, 5.6.1, 5.6.2 are [tested](https://github.com/pyinstxtractor/pyinstxtractor-test-binaries) & supported. Probably will work with other versions too.
 
 This project was originally hosted on [SourceForge](https://sourceforge.net/projects/pyinstallerextractor/).
 

pyinstxtractor.py

@@ -1,5 +1,5 @@
 """
-PyInstaller Extractor v2.0 (Supports pyinstaller 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)
+PyInstaller Extractor v2.0 (Supports pyinstaller 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
@@ -192,7 +192,7 @@ class PyInstArchive:
 
                 # Read CArchive cookie
                 (magic, lengthofPackage, toc, tocLen, pyver, pylibname) = \
-                struct.unpack('!8siiii64s', self.fPtr.read(self.PYINST21_COOKIE_SIZE))
+                struct.unpack('!8sIIii64s', self.fPtr.read(self.PYINST21_COOKIE_SIZE))
 
         except:
             print('[!] Error : The file is not a pyinstaller archive')
@@ -224,11 +224,11 @@ class PyInstArchive:
         # Parse table of contents
         while parsedLen < self.tableOfContentsSize:
             (entrySize, ) = struct.unpack('!i', self.fPtr.read(4))
-            nameLen = struct.calcsize('!iiiiBc')
+            nameLen = struct.calcsize('!iIIIBc')
 
             (entryPos, cmprsdDataSize, uncmprsdDataSize, cmprsFlag, typeCmprsData, name) = \
             struct.unpack( \
-                '!iiiBc{0}s'.format(entrySize - nameLen), \
+                '!IIIBc{0}s'.format(entrySize - nameLen), \
                 self.fPtr.read(entrySize - 4))
 
             name = name.decode('utf-8').rstrip('\0')