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Why to dump precisely at OEP while manual unpacking?

What is the exact reason for dumping a process when the Program Counter is at OEP? I haven't found a decent answer. This Link says: In order to identify the IAT structure, Import Reconstructor ...
3
votes
2answers
3k views

Fixing import table of unpacked DLL with ImpREC : ImpRec throws “invalid OEP!” error

I am trying to unpack a DLL and fix the import tables with ImpRec. However, I am stuck with this error. Following is what I have tried. Modified the flag in its PE header so that windows loads the ...