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Date: Sat, 29 Sep 2012 15:35:39 +0530
From: Dhiru Kholia <>
Subject: Re: [PoC] Cryptographic flaws in Oracle Database authentication protocol

On Sat, Sep 29, 2012 at 12:12 AM, Dhiru Kholia <> wrote:
> Marcel has written "o5logoncrack" program to crack the password given
> AUTH_SESSKEY and AUTH_VFR_DATA. However Marcel hasn't released any
> algorithm details or source code. I will write a JtR format soon for this.

Code is now committed to unstable-jumbo

✗ ../run/john -fo:o5logon -t
Benchmarking: Oracle O5LOGON protocol [32/64]... DONE
Raw:	748982 c/s real, 754370 c/s virtual

Ettercap plug-in to sniff AUTH_SESSKEY and AUTH_VFR_DATA is committed


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