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標題: NexonGameSecurity(BlackCipher) Bypass [打印本頁]

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作者: WIN717160    時間: 2017-11-27 23:59
標題: NexonGameSecurity(BlackCipher) Bypass

• #include <stdint.h>
• #include <Shlwapi.h>
• #pragma comment(lib, "Shlwapi.lib")
• #define BLACKCIPHER_EXE "BlackCipher.aes"
• typedef BOOL(WINAPI* CreateProcessWPtr)(LPCWSTR, LPWSTR, LPSECURITY_ATTRIBUTES, LPSECURITY_ATTRIBUTES, BOOL, DWORD, LPVOID, LPCWSTR, LPSTARTUPINFO, LPPROCESS_INFORMATION);
• CreateProcessWPtr _CreateProcessW = (CreateProcessWPtr)GetProcAddress(GetModuleHandleA("Kernel32.dll"), "CreateProcessW");
• BOOL WINAPI CreateProcessW_Hook(LPCWSTR lpApplicationName, LPWSTR lpCommandLine, LPSECURITY_ATTRIBUTES lpProcessAttributes, LPSECURITY_ATTRIBUTES lpThreadAttributes, BOOL bInheritHandles, DWORD dwCreationFlags, LPVOID lpEnvironment, LPCWSTR lpCurrentDirectory, LPSTARTUPINFOW lpStartupInfo, LPPROCESS_INFORMATION lpProcessInformation)
• {
•         size_t chars_converted = 0;                             // used by wcstombs_s and mbstowcs_s
•         char application_name_mb[512 = { "(nullptr)\0" };      // multibyte versions of the strings in the params
•         char command_line_mb[512 = { "(nullptr)\0" };
•         char current_directory_mb[512 = { "(nullptr)\0" };
•         BOOL res;
•         char buf[MAX_PATH = { 0 };                             // used by GetModuleNameA
•         PSTR cmd_line_end;                                      // pointer to the double quote after BlackCipher.aes in the cmd line
•         size_t cmd_line_end_size;                               // size of the buffer after cmd_line_end
•         int is_bc_executable = 0;                               // 1 if the call is related to BlackCipher.aes
•         WCHAR replaced_cmd[512 = { 0 };                        // modified cmd line (BlackCipher.aes -> BlackCipher.aes2)
•        
•         do {
•                 if (lpApplicationName && wcstombs_s(&chars_converted, application_name_mb, 512, lpApplicationName, 512) == -1) {
•                         Log(L"wcstombs_s failed for lpApplicationName (%s)\n", lpApplicationName);
•                         break;
•                 }
•                 if (lpCommandLine && wcstombs_s(&chars_converted, command_line_mb, 512, lpCommandLine, 512) == -1) {
•                         Log(L"wcstombs_s failed for lpCommandLine (%s)\n", lpCommandLine);
•                         break;
•                 }
•                 if (lpCurrentDirectory && wcstombs_s(&chars_converted, current_directory_mb, 512, lpCurrentDirectory, 512) == -1) {
•                         Log(L"wcstombs_s failed for lpCurrentDirectory (%s)\n", lpCurrentDirectory);
•                         break;
•                 }
•                 is_bc_executable = StrStrIA(command_line_mb, BLACKCIPHER_EXE) != NULL;
•                 // replace BlackCipher.aes with BlackCipher.aes2
•                 if (is_bc_executable)
•                 {
•                         cmd_line_end = StrStrIA(command_line_mb, BLACKCIPHER_EXE) + 15;
•                         cmd_line_end_size = MAX_PATH - (cmd_line_end - command_line_mb);
•                         memmove_s(cmd_line_end + 1, cmd_line_end_size - 1, cmd_line_end, cmd_line_end_size - 1);
•                         *cmd_line_end = '2';
•                         if (mbstowcs_s(&chars_converted, replaced_cmd, 512, command_line_mb, 512))
•                         {
•                                 Log(L"mbstowcs_s failed for command_line_mb (%s)\n", command_line_mb);
•                                 break;
•                         }
•                         lpCommandLine = replaced_cmd;
•                 }
•         } while (0);
•        
•         res = _CreateProcessW(lpApplicationName, lpCommandLine, lpProcessAttributes, lpThreadAttributes, bInheritHandles, dwCreationFlags, lpEnvironment, lpCurrentDirectory, lpStartupInfo, lpProcessInformation);
•         return res;
• }
• static uint32_t maple_pid = 0, maple_dump = 0, maple_base = 0, maple_size = 0;
• typedef BOOL(WINAPI* ReadProcessMemoryPtr)(HANDLE, LPCVOID, LPVOID, SIZE_T, SIZE_T *);
• ReadProcessMemoryPtr _ReadProcessMemory = (ReadProcessMemoryPtr)GetProcAddress(GetModuleHandleA("KernelBase.dll"), "ReadProcessMemory");
• BOOL WINAPI ReadProcessMemory_Hook(HANDLE hProcess, LPCVOID lpBaseAddress, LPVOID lpBuffer,SIZE_T nSize, SIZE_T *lpNumberOfBytesRead)
• {
•         BOOL res;
•         int spoofed = 0;
•         uint32_t pid = (uint32_t)GetProcessId(hProcess);
•         uint32_t current_pid = (uint32_t)GetCurrentProcessId();
•         LPCVOID original_base = lpBaseAddress;
•         if (pid == maple_pid || pid == current_pid)
•         {
•                 if (GetProcessId(hProcess) == maple_pid && (uint32_t)lpBaseAddress >= maple_base && (uint32_t)lpBaseAddress < maple_base + maple_size) {
•                         lpBaseAddress = (LPCVOID)((uint32_t)lpBaseAddress - maple_base + maple_dump);
•                         spoofed = 1;
•                 }
•                 if (GetProcessId(hProcess) == GetCurrentProcessId() && (uint32_t)lpBaseAddress >= MS_Memory_Start && (uint32_t)lpBaseAddress < MS_Memory_End)
•                 {
•                         lpBaseAddress = (LPCVOID)((uint32_t)lpBaseAddress - MS_Memory_Start + MS_Memory);
•                         Log(L"!!!BC tried to check its own memory!!!");
•                         spoofed = 1;
•                 }
•         }
•         res = _ReadProcessMemory(hProcess, lpBaseAddress, lpBuffer, nSize, lpNumberOfBytesRead);
•         return res;
• }
• typedef LPVOID PCLIENT_ID;
• #define STATUS_ACCESS_DENIED 0xC0000022
• typedef NTSYSAPI NTSTATUS(NTAPI* NtOpenProcessPtr)(PHANDLE ProcessHandle, ACCESS_MASK AccessMask, POBJECT_ATTRIBUTES ObjectAttributes, PCLIENT_ID ClientId);
• NtOpenProcessPtr _NtOpenProcess = (NtOpenProcessPtr)GetProcAddress(GetModuleHandleA("ntdll.dll"), "NtOpenProcess");
• NTSTATUS NTAPI NtOpenProcess_Hook(PHANDLE ProcessHandle, ACCESS_MASK AccessMask, POBJECT_ATTRIBUTES ObjectAttributes, PCLIENT_ID ClientId)
• {
•         NTSTATUS res;
•         uint32_t pid;
•         AccessMask |= PROCESS_QUERY_INFORMATION; // Ensures that we'll have permission to get PID
•         res = _NtOpenProcess(ProcessHandle, AccessMask, ObjectAttributes, ClientId);
•         pid = (uint32_t)GetProcessId(*ProcessHandle);
•         if (!res && pid != maple_pid)
•         {
•                 Log(L"Blocking NtOpenProcess for pid %.08X\n", pid);
•                 res = STATUS_ACCESS_DENIED;
•                 *ProcessHandle = NULL;
•         }
•         return res;
• }
• typedef NTSYSAPI NTSTATUS(NTAPI* NtReadVirtualMemoryPtr)(HANDLE ProcessHandle, PVOID BaseAddress, PVOID Buffer, ULONG NumberOfBytesToRead, PULONG NumberOfBytesReaded);
• NtReadVirtualMemoryPtr _NtReadVirtualMemory = (NtReadVirtualMemoryPtr)GetProcAddress(GetModuleHandleA("ntdll.dll"), "NtReadVirtualMemory");
• NTSTATUS NTAPI NtReadVirtualMemory_Hook(HANDLE ProcessHandle, PVOID BaseAddress, PVOID Buffer, ULONG NumberOfBytesToRead, PULONG NumberOfBytesReaded)
• {
•         if (GetProcessId(ProcessHandle) == maple_pid)
•         {
•                 Log(L"Blocking NtReadVirtualMemory for address %.08X\n", BaseAddress);
•                 return STATUS_ACCESS_DENIED;
•         }
•         return _NtReadVirtualMemory(ProcessHandle, BaseAddress, Buffer, NumberOfBytesToRead, NumberOfBytesReaded);
• }
  

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作者: 冰楓    時間: 2017-11-28 00:22
Source:https://www.unknowncheats.me/forum/1250047-post1.html

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