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Finding Binary Clones with Opstrings & Function Digests: Part I

By Andrew Schulman, July 01, 2005

Reverse engineering is an invaluable engineering tool.
July, 2005: Finding Binary Clones with Opstrings & Function Digests: Part I 

577 . B647FA858CFFF1A967CF4E651E36564E   autofmt.exe - fn_0104E67B
577 . B647FA858CFFF1A967CF4E651E36564E   autoconv.exe - fn_01053928
577 . B647FA858CFFF1A967CF4E651E36564E   autochk.exe - fn_010504BC
577 . B647FA858CFFF1A967CF4E651E36564E   <b>untfs.dll </b>- fn_5B02B866
 ...
143 . 8860A6DD56DF723412AA7ABFBE77BF4B   autofmt.exe - fn_0102C4A0
143 . 8860A6DD56DF723412AA7ABFBE77BF4B   autoconv.exe - fn_01032DDE
143 . 8860A6DD56DF723412AA7ABFBE77BF4B   autochk.exe - fn_0102E7E4
143 . 8860A6DD56DF723412AA7ABFBE77BF4B   <b>untfs.dll</b> - 
        ?QueryLcnFromVcn@NTFS_EXTEN T_LIST@@QBEEVBIG_INT@@PAV2@1@Z
 ...

Figure 2: untfs.dll contains NTFS-related code that is duplicated in auto*.exe.



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