1 files changed, 0 insertions, 79 deletions
diff --git a/NorthstarDLL/exploitfixes_lzss.cpp b/NorthstarDLL/exploitfixes_lzss.cpp
deleted file mode 100644
index 4205133a..00000000
--- a/NorthstarDLL/exploitfixes_lzss.cpp
+++ /dev/null
@@ -1,79 +0,0 @@
-#include "pch.h"
-
-AUTOHOOK_INIT()
-
-static constexpr int LZSS_LOOKSHIFT = 4;
-
-struct lzss_header_t
-{
-	unsigned int id;
-	unsigned int actualSize;
-};
-
-// Rewrite of CLZSS::SafeUncompress to fix a vulnerability where malicious compressed payloads could cause the decompressor to try to read
-// out of the bounds of the output buffer.
-// clang-format off
-AUTOHOOK(CLZSS__SafeDecompress, engine.dll + 0x432A10,
-unsigned int, __fastcall, (void* self, const unsigned char* pInput, unsigned char* pOutput, unsigned int unBufSize))
-// clang-format on
-{
-	unsigned int totalBytes = 0;
-	int getCmdByte = 0;
-	int cmdByte = 0;
-
-	lzss_header_t header = *(lzss_header_t*)pInput;
-
-	if (!pInput || !header.actualSize || header.id != 0x53535A4C || header.actualSize > unBufSize)
-		return 0;
-
-	pInput += sizeof(lzss_header_t);
-
-	for (;;)
-	{
-		if (!getCmdByte)
-			cmdByte = *pInput++;
-
-		getCmdByte = (getCmdByte + 1) & 0x07;
-
-		if (cmdByte & 0x01)
-		{
-			int position = *pInput++ << LZSS_LOOKSHIFT;
-			position |= (*pInput >> LZSS_LOOKSHIFT);
-			position += 1;
-			int count = (*pInput++ & 0x0F) + 1;
-			if (count == 1)
-				break;
-
-			// Ensure reference chunk exists entirely within our buffer
-			if (position > totalBytes)
-				return 0;
-
-			totalBytes += count;
-			if (totalBytes > unBufSize)
-				return 0;
-
-			unsigned char* pSource = pOutput - position;
-			for (int i = 0; i < count; i++)
-				*pOutput++ = *pSource++;
-		}
-		else
-		{
-			totalBytes++;
-			if (totalBytes > unBufSize)
-				return 0;
-
-			*pOutput++ = *pInput++;
-		}
-		cmdByte = cmdByte >> 1;
-	}
-
-	if (totalBytes != header.actualSize)
-		return 0;
-
-	return totalBytes;
-}
-
-ON_DLL_LOAD("engine.dll", ExploitFixes_LZSS, (CModule module))
-{
-	AUTOHOOK_DISPATCH()
-}