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MachO: Disallow mapping to BSS and negative size sections

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This commit is contained in:
Katy Coe
2020-12-07 00:19:47 +01:00
parent d627cb93df
commit aef7245cd2
1 changed files with 4 additions and 4 deletions
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8
Il2CppInspector.Common/FileFormatReaders/MachOReader.cs
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@@ -25,7 +25,7 @@ namespace Il2CppInspector
protected override MachO lc_Segment => MachO.LC_SEGMENT;
public override uint MapVATR(ulong uiAddr) {
var section = machoSections.First(x => uiAddr >= x.Address && uiAddr <= x.Address + x.Size);
var section = machoSections.First(x => uiAddr >= x.Address && uiAddr <= x.Address + x.Size && x.Name != "__bss" && x.Name != "__common");
return (uint) uiAddr - (section.Address - section.ImageOffset);
}
@@ -47,7 +47,7 @@ namespace Il2CppInspector
protected override MachO lc_Segment => MachO.LC_SEGMENT_64;
public override uint MapVATR(ulong uiAddr) {
var section = machoSections.First(x => uiAddr >= x.Address && uiAddr <= x.Address + x.Size);
var section = machoSections.First(x => uiAddr >= x.Address && uiAddr <= x.Address + x.Size && x.Name != "__bss" && x.Name != "__common");
return (uint) (uiAddr - (section.Address - section.ImageOffset));
}
@@ -127,9 +127,9 @@ namespace Il2CppInspector
// Create universal section
sections.Add(new Section {
VirtualStart = conv.ULong(section.Address),
VirtualEnd = conv.ULong(section.Address) + conv.ULong(section.Size) - 1,
VirtualEnd = conv.ULong(section.Address) + (uint) Math.Max(conv.Int(section.Size) - 1, 0),
ImageStart = section.ImageOffset,
ImageEnd = section.ImageOffset + (uint) conv.Int(section.Size) - 1,
ImageEnd = section.ImageOffset + (uint) Math.Max(conv.Int(section.Size) - 1, 0),
IsData = segment.Name == "__TEXT" || segment.Name == "__DATA",
IsExec = segment.Name == "__TEXT",