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Bug: Repeated memory decryption leads to ERROR C0000005 #1

@Arcueld

Description

@Arcueld

Explanation:
PigSyscall#InternalCaller Line 52
when second call Function "CallSyscall" , stub_addr will be decrypt again by Call CryptPermute a second time it will leads to ERROR C0000005(access violation)

Possible Solution:
adding a flag to track whether the address has already been decrypted

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