转: PE rva to raw 虚拟偏移地址和文件物理偏移地址


+---------+---------+---------+---------+---------+---------+
| 段名称 虚拟地址 虚拟大小 物理地址 物理大小 标志 |
+---------+---------+---------+---------+---------+---------+
| Name VOffset VSize ROffset RSize Flags |
+---------+---------+---------+---------+---------+---------+
| .text 00001000 00000092 00000400 00000200 60000020|
| .rdata 00002000 000000F6 00000600 00000200 40000040|
| .data 00003000 0000018E 00000800 00000200 C0000040|
| .rsrc 00004000 000003A0 00000A00 00000400 C0000040|
+---------+---------+---------+---------+---------+---------+
虚拟偏移地址和文件物理偏移地址的计算公式如下:

>>>>>>>VaToFileOffset(虚拟地址转文件偏移地址)
如VA = 00401000 (虚拟地址)
ImageBase = 00400000 (基地址)
VRk = VOffset - ROffset = 00001000 - 00000400 (得出文件虚拟地址和文件物理址之间的VRk值)
FileOffset = VA - ImageBase - VRk = 00401000 - 00400000 - VRk = 400(文件物理地址的偏移地址)

如VA = 00401325,则:
FileOffset = VA - ImageBase - VRk = 00401325 - 00400000 - VRk = 725

>>>>>>FileOffsetToVa(文件偏移地址转虚拟地址)
如FileOffset = 435(文件偏移地址)
VA = FileOffset + ImageBase + VRk = 435 + 00400000 + VRk = 00401035(虚拟地址)

 

posted @ 2016-05-31 17:31  庚武  Views(792)  Comments(0Edit  收藏  举报