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WebSocket message is not human readable

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Risto
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Risto asked on 03 Nov 2016, 10:19 AM

Hi!

I am receiving data from various third-party sites to my internet browser (Chrome). They use WebSocket. From some suppliers (sites) I see nice JSON formatted data but some sites the data (webSocket payLoad message) is not readable to me (long messy string - you can see it from prictures I attached). Is it possible to extract the human readable data from that long messy string for example with FiddlerScript? I am using Fiddler v4.6.3.

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Risto
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answered on 09 Nov 2016, 04:26 PM

Forgot to add header info:

GET /socket.io/?EIO=3&transport=websocket HTTP/1.1
Host: e3-push.kambi.com
Connection: Upgrade
Pragma: no-cache
Cache-Control: no-cache
Upgrade: websocket
Origin: https://www.unibet.ee
Sec-WebSocket-Version: 13
User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.87 Safari/537.36
Accept-Encoding: gzip, deflate, sdch, br
Accept-Language: en-US,en;q=0.8
Sec-WebSocket-Key: sJsdXM8BY3RqoDaNQKBxYA==
Sec-WebSocket-Extensions: permessage-deflate; client_max_window_bits

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Risto
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answered on 09 Nov 2016, 04:29 PM
May it possible that PayLoad string encrypted with SHA-x?
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Tsviatko Yovtchev
Telerik team
answered on 11 Nov 2016, 04:46 PM
Hi,

These look like Base64 encoded strings. So getting them back to readable text should be quite easy.

Regards,
Tsviatko Yovtchev
Telerik by Progress
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Risto
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answered on 11 Nov 2016, 08:34 PM

Thank you for andwering. Made quick test with online base64 decoder and result was binary-like data. Are you sure that it is base64 data? 

H4sIAAAAAAAAAJWQwWrDMAyG30Vnj8qK5bi55TLYaccySg9u4tJAE0PqrpTgd5/SEujW025Cn9An/dsJElSgTencmrl0unSgoJem1gr2MV6gmiB8hyF9tNJELGzB2qCCeElN7MMZqu0EnUAismidZSOwbQWQYRnch/R5OIRxXkBoyTLqAh8z76NvUhcHf5IzaL0ihAeo+zB2jR/u1zFk9cfBi0Mz/sehV/RqeCNEyLs8W37n4cgseVgF5yaO4TUQptLiEz1KLLLFzL/4q78t9fUYpaw39RfknHc/mCaB+30BAAA=

 

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Tsviatko Yovtchev
Telerik team
answered on 14 Nov 2016, 04:13 PM
Hello,

Binary data is oftentimes Base64 encoded. So, you might have gotten the original data. 

Regards,
Tsviatko Yovtchev
Telerik by Progress
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Linh
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answered on 04 Apr 2019, 09:06 AM
Please help me. How to decode this binary data
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Tsviatko Yovtchev
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