fix: bad error handling for missing carrier imports

pe/superpe.py

@@ -247,7 +247,7 @@ class SuperPe():
             for entry in iat[dll_name]:
                 if entry.func_name == func_name:
                     return entry.iat_vaddr
-        raise Exception(f"Function {func_name} not found in IAT")
+        return None
     
 
     def get_iat_entries(self) -> Dict[str, List[IatEntry]]:

supermega.py

@@ -197,7 +197,10 @@ def start_real(settings: Settings):
     # CHECK if all are available in infectable, or abort (early check)
     functions = project.injectable.get_unresolved_iat()
     if len(functions) != 0 and settings.fix_missing_iat == False:
-        raise Exception("IAT entry not found: {}".format(", ".join(functions)))
+        logging.error("IAT entries not found in infectable: {}".format(", ".join(functions)))
+        logging.error("The carrier depends on these functions, but they are not available in the infectable exe.")
+        logging.error("Use another infectable exe, or update the carrier to not depend on these functions.")
+        raise Exception("Required carrier import not found in infectable: {}".format(", ".join(functions)))
 
     # ASSEMBLE: Assemble .asm to .shc (ASM -> SHC)
     carrier_shellcode: bytes = phases.assembler.asm_to_shellcode(