Zello error message. "Can't establish a secure connection"

[Ivantus]

Hi guys, I found a solution that enables full Zello legacy app functionality as before (Enable TLS and Sign-in when Zello starts).

Just follow these two steps:
1. Install mitmproxy (mitmproxy - an interactive HTTPS proxy). You do not need to configure anything, the default configuration is OK. Just run mitmproxy from start menu or from C:\Program Files\mitmproxy\bin\mitmproxy.exe if you have disabled script execution.
2. Set Zello connection settings as in the screenshot below:

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Now you will be able to normally login. When you confirm everything works, you can set mitmproxy to autorun with Windows and without the console. Just create Windows Task that runs mitmproxy.exe as SYSTEM on startup:

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Tried this in Win7. Mitmproxy ver.5 works on Win7. However, Zello gives me an error: "Can't locate authentication server". Anyone solved this?

 

[Fireman-Sam]

Tried this in Win7. Mitmproxy ver.5 works on Win7. However, Zello gives me an error: "Can't locate authentication server". Anyone solved this?

Never seen this error. I'm using version 2.6. Can you check your version?



Edit: now I understand. You are using old version of mitmproxy because newer versions cannot run on Windows 7. But I think the latest version for Windows 7 is 6.0.2.

 

[Fireman-Sam]

Tried this in Win7. Mitmproxy ver.5 works on Win7. However, Zello gives me an error: "Can't locate authentication server". Anyone solved this?

Create shortcut to mitmdump and add --tcp-hosts ".*" like this:

"C:\Program Files (x86)\mitmproxy\bin\mitmdump.exe" --tcp-hosts ".*"

 

[Ivantus]

Create shortcut to mitmdump and add --tcp-hosts ".*" like this:

WOW - that worked like a charm.
Would you care to explain what it does?

 

[Fireman-Sam]

Zello legacy uses a proprietary binary TCP protocol with TLS-like application-layer wrapping, not HTTP or HTTPS, so normal mitmproxy mode fails on its non-HTTP handshake (LT\n…). Using --tcp-hosts allows mitmproxy to forward all bytes as a raw TCP stream without parsing HTTP.

 

[MaxOffRoadin]

Another tool is to use is ZPTTLink. It's an open-source bridge that runs Zello in BlueStacks or Waydroid and links to AIOC/other gateways for reliable PTT + audio (Win/Mac/Linux). Repo: http://bit.ly/ZPTTLink