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Improved Anti-Tamper detection #16

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Original file line number Diff line number Diff line change
Expand Up @@ -60,11 +60,14 @@ public bool Deobfuscate(AssemblyManager assemblyManager) {
static bool? IsTampered(ModuleDefMD module) {
var sections = module.MetaData.PEImage.ImageSectionHeaders;

if (sections.Count == 3) {
Logger.Verbose("Anti-tamper not detected.");
// There should be at least a .text and a .rsrc section
if (sections.Count < 3) {
Logger.Verbose("Anti-tamper should not be present.");
return false;
}

// If more than 2 sections, test the names (the name of the section
// created by ConfuserEx is random)
foreach (var section in sections) {
switch (section.DisplayName) {
case ".text":
Expand All @@ -76,6 +79,14 @@ public bool Deobfuscate(AssemblyManager assemblyManager) {
return true;
}
}

// If there were only .text, .rsrc and .reloc sections
// Then the protection is absent
if (sections.Count == 3) {
Logger.Verbose("Anti-tamper should not detected.");
return false;
}

return null;
}

Expand Down