Yes, you are right. There are no problems with Python 3.7.1, it's all about the "cryptography-2.5" module and newer ones. But I also don't see any problems with psapi.dll or mpr.dll, only with bcrypt.dll. Nevertheless, the problem with the new versions of "cryptography" and Python crashes would be interesting to solve.
C:\Temp\python-3.7.1>pip list
Package Version
------------ -------
asn1crypto 0.24.0
cffi 1.12.1
colorama 0.4.1
cryptography 2.4.2
idna 2.8
pip 19.0.3
pycparser 2.19
pyOpenSSL 19.0.0
PySocks 1.6.8
setuptools 40.8.0
six 1.12.0
urllib3 1.24.1
wheel 0.33.1
C:\Temp\python-3.7.1>python
Python 3.7.1 (v3.7.1:260ec2c36a, Oct 20 2018, 14:05:16) [MSC v.1915 32 bit (Intel)] on win32
>>> ^Z
File: _openssl.cp37-win32.pyd
MD5: 6b3ef6344fc88c5c991017d4892a917a
SHA-1: 021b329260f5ae2916ef42097cb8ef2109e35f32
SHA-256: 67de1aaadf0f19b5d6f7b89ede5a5b6e7986e7955c2ca31ffccf5a882f604e4a
C:\Temp\dumpbin>dumpbin /dependents _openssl.cp37-win32.pyd
Microsoft (R) COFF/PE Dumper Version 8.00.50727.762
Copyright (C) Microsoft Corporation. All rights reserved.
Dump of file _openssl.cp37-win32.pyd
File Type: DLL
Image has the following dependencies:
ADVAPI32.dll
CRYPT32.dll
USER32.dll
WS2_32.dll
python37.dll
KERNEL32.dll
VCRUNTIME140.dll
api-ms-win-crt-heap-l1-1-0.dll
api-ms-win-crt-string-l1-1-0.dll
api-ms-win-crt-time-l1-1-0.dll
api-ms-win-crt-runtime-l1-1-0.dll
api-ms-win-crt-utility-l1-1-0.dll
api-ms-win-crt-convert-l1-1-0.dll
api-ms-win-crt-stdio-l1-1-0.dll
api-ms-win-crt-filesystem-l1-1-0.dll
api-ms-win-crt-environment-l1-1-0.dll
api-ms-win-crt-math-l1-1-0.dll
C:\Temp\ProxHTTPSProxy>python C:\Temp\ProxHTTPSProxy\ProxHTTPSProxy.py
============================================================================
ProxHTTPSProxyMII v1.5 (urllib3/1.24.1)
FrontServer : localhost:8079
RearServer : localhost:8081
ParentServer : None
Proxomitron : http://localhost:8118
============================================================================
[12:24] 001 [D] "POST https://www.google.com/gen_204?s=webhp&t=aft&atyp=csi&ei=u
_h4XKayLdqVk74Po469mA0&rt=wsrt.14,aft.276,prt.276&bb=1 0" 204 0
[12:24] 002 [D] "GET https://www.google.com/gen_204?atyp=i&ct=backbutton&cad=&tt
=navigation&ei=u_h4XKayLdqVk74Po469mA0&zx=1551432247610" 204 0
[12:24] 003 [D] "POST https://www.google.com/gen_204?atyp=csi&bb=1&ei=u_h4XKayLd
qVk74Po469mA0&s=jsa&jsi=s,t.0,et.focus,n.iDPoPb,cn.1&zx=1551432247778 0" 204 0
[12:24] 004 [D] "POST https://www.google.com/gen_204?atyp=csi&bb=1&ei=u_h4XKayLd
qVk74Po469mA0&s=webhp&t=all&imn=2&adh=&ima=1&ime=1&imeb=0&imeo=0&wh=620&scp=0&st
o=&sys=hc.1&rt=prt.276,aft.276,iml.522,xjsls.390,dcl.418,xjses.922,xjsee.1356,xj
s.1356,ol.2230,wsrt.14,cst.0,dnst.0,rqst.112,rspt.100,rqstt.2,unt.2,cstt.2,dit.3
46&zx=1551432248922 0" 204 0