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PolygonDLL
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remove redundant cast from Crypt::verifySignatureBase64

This commit is contained in:
lightbulblighter 2022-06-10 18:34:46 -07:00
parent 3c41e4212c
commit f9f88d761f
No known key found for this signature in database
GPG Key ID: 0B2452F9DE0E2D01
1 changed files with 2 additions and 12 deletions
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14
PolygonDLL/Hooks/Crypt.cpp
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@ -112,22 +112,12 @@ Crypt__verifySignatureBase64_t Crypt__verifySignatureBase64 = (Crypt__verifySign
// Crypt::verifySignatureBase64(std::string message, std::string signatureBase64)
void __fastcall Crypt__verifySignatureBase64_hook(HCRYPTPROV* _this, void*, int a2, BYTE* pbData, int a4, int a5, int a6, DWORD dwDataLen, int a8, int a9, int a10, int a11, int a12, int a13, int a14, int a15)
{
/*
Ideally, we would be able to just use the function signature as-is.
However, it causes inexplicable crashes. Thus, we must reconstruct
the strings by hand given the manual parameters.
*/
// We have to reconstruct the parameters by hand since using the original function signature causes crashes
std::string message;
std::string signatureBase64;
// Get message
const BYTE* v18 = pbData;
if ((unsigned int)a8 < 0x10)
{
v18 = (const BYTE*)&pbData;
}
message = std::string(reinterpret_cast<const char*>(pbData), dwDataLen);
// Get signatureBase64
@ -142,7 +132,7 @@ void __fastcall Crypt__verifySignatureBase64_hook(HCRYPTPROV* _this, void*, int
// Verify signature
if (!Crypt().verifySignatureBase64(message, signatureBase64, CALG_SHA_256))
{
// backwards compatibility for sha1 signatures
// Backwards compatibility for sha1 signatures
if (!Crypt().verifySignatureBase64(message, signatureBase64, CALG_SHA1))
{
throw std::runtime_error("");