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Fix Demon DLL #524

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Fix Demon DLL #524

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voidvxvt
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@voidvxvt voidvxvt commented Oct 25, 2024

Overview
This PR fixes the Demon DLL crash caused by a null pointer dereference.
TLDR: rundll32 demon.x64.dll,Start will work again.

Details
LdrModulePeb is called in DllMain before Instance has been initialized.

Kernel32 = LdrModulePeb( H_MODULE_KERNEL32 );

LdrModulePeb accesses the uninitialized Instance, which is a null pointer derefernce at this point of execution, causing the process to crash.
if ( ! Instance->Teb ) {

I’ve tested the x64 EXE, DLL, and SHC on Windows 11, with WaitForSingleObjectEx, Foliage, Ekko and Zilean sleep obfuscation enabled and all binaries are operating well with this update.

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