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Fix unpacking of ASLR enabled PE files

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This commit is contained in:
bitraid
2020-04-12 03:19:57 +03:00
committed by Markus F.X.J. Oberhumer
parent 740b4ff865
commit 1ce6f0e6f4
1 changed files with 12 additions and 12 deletions
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src/pefile.cpp
+12 -12
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@@ -2933,6 +2933,18 @@ void PeFile::unpack0(OutputFile *fo, const ht &ih, ht &oh,
ft.unfilter(obuf + oh.codebase - rvamin, oh.codesize); ft.unfilter(obuf + oh.codebase - rvamin, oh.codesize);
} }
//NEW: disable reloc stripping if ASLR is enabled
if(ih.dllflags & IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE)
opt->win32_pe.strip_relocs = false;
// FIXME: ih.flags is checked here because of a bug in UPX 0.92
if ((opt->win32_pe.strip_relocs && !isdll) || (ih.flags & RELOCS_STRIPPED))
{
oh.flags |= RELOCS_STRIPPED;
ODADDR(PEDIR_RELOC) = 0;
ODSIZE(PEDIR_RELOC) = 0;
}
rebuildImports<LEXX>(extrainfo, ord_mask, set_oft); rebuildImports<LEXX>(extrainfo, ord_mask, set_oft);
rebuildRelocs(extrainfo, sizeof(ih.imagebase) * 8, oh.flags, oh.imagebase); rebuildRelocs(extrainfo, sizeof(ih.imagebase) * 8, oh.flags, oh.imagebase);
rebuildTls(); rebuildTls();
@@ -2966,18 +2978,6 @@ void PeFile::unpack0(OutputFile *fo, const ht &ih, ht &oh,
oh.headersize = rvamin; oh.headersize = rvamin;
oh.chksum = 0; oh.chksum = 0;
//NEW: disable reloc stripping if ASLR is enabled
if(ih.dllflags & IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE)
opt->win32_pe.strip_relocs = false;
// FIXME: ih.flags is checked here because of a bug in UPX 0.92
if ((opt->win32_pe.strip_relocs && !isdll) || (ih.flags & RELOCS_STRIPPED))
{
oh.flags |= RELOCS_STRIPPED;
ODADDR(PEDIR_RELOC) = 0;
ODSIZE(PEDIR_RELOC) = 0;
}
// write decompressed file // write decompressed file
if (fo) if (fo)
{ {