fix memory-module crash with dll align with 512 #21
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How can I create such a DLL for testing? Do you use |
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yes. i use /align:512 in order to get the smallest binary |
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Hmm. There still some problems. if some sections in one page and any section have different Characteristics.. if the last section's Characteristics have no executable attribute.. the memory-module will be crash cause by DEP |
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And here is a test dll link with 512 |
…te would be covered by the next section's.
fancycode
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Feb 28, 2015
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Thanks for the initial suggestions. This is implemented now, however I had to change a couple of things to support more cases. |
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if dll align with 512 the section->VirtualAddress will lower than a page size. and virtualalloc will return the page base but not the next page..
eg. section->VirtualAddress = 0x200, codebase = 0x1000000
dest = (unsigned char *)VirtualAlloc(codeBase + section->VirtualAddress,
section->SizeOfRawData,
MEM_COMMIT,
PAGE_READWRITE);
the dest will be 0x1000000..
so the memory-module will crash