Exploit writing when EIP is not corrupted but EDX, EBP register are having user supplied data

[praveen_recker () sify com]

I had a condition where "EDX and EBP registers are filled with user supplied data but EIP is not getting corrupted".
How can I write a working exploit to this?

Please give your inputs and if possible point to me to some whitepapers if available.

Best Regards,
Praveen Darshanam

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