implement FlsGetValue2

qiling/os/windows/dlls/kernel32/fibersapi.py

@@ -25,6 +25,15 @@ def hook_FlsFree(ql: Qiling, address: int, params):
 def hook_FlsGetValue(ql: Qiling, address: int, params):
     return ql.os.fiber_manager.get(params['dwFlsIndex'])
 
+# LPVOID FlsGetValue2(
+#  DWORD dwFlsIndex
+# );
+@winsdkapi(cc=STDCALL, params={
+    'dwFlsIndex' : DWORD
+})
+def hook_FlsGetValue2(ql: Qiling, address: int, params):
+    return ql.os.fiber_manager.get_noerr(params['dwFlsIndex'])
+
 # BOOL FlsSetValue(
 #  DWORD dwFlsIndex
 #  PVOID lpFlsData

qiling/os/windows/fiber.py

@@ -112,3 +112,10 @@ class FiberManager:
             return 0
 
         return self.fibers[idx].data
+    
+    # equivalent to get, but does not set errors; used for FlsGetValue2
+    def get_noerr(self, idx: int) -> int:
+        if idx not in self.fibers:
+            return 0
+
+        return self.fibers[idx].data