27 April 2013

Recover ISP password from Netcomm modem

Maybe your idiotic user forgot the DSL password to their Netcomm modem. A minute with the password dump and Excel should help:
  1. Backup the Netcomm modem configuration to file through its web interface.
  2. Open the file and find the encoded password - it will be hexadecimal pairs like this: password="989A909999899E8C8C"
  3. Fire up Excel and put each hexadecimal pair in a column starting from A1.
  4. Put this formula in B1 and copy it down: =CHAR(255-HEX2DEC(A1))
  5. The result is the password.
Big ups to Cadzow Tech Proprietary Limited.

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