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https://github.com/FunkyFr3sh/cnc-ddraw.git
synced 2025-03-15 06:04:49 +01:00
some more IAT hook tweaks
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parent
ecc56d4cbc
commit
ed2fa9331a
45
src/hook.c
45
src/hook.c
@ -9,6 +9,7 @@
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#include "debug.h"
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#include "dllmain.h"
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#include "config.h"
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#include "utils.h"
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#ifdef _MSC_VER
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#include "detours.h"
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@ -196,14 +197,13 @@ void hook_patch_obfuscated_iat_list(HMODULE hmod, BOOL unhook, HOOKLIST* hooks,
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for (int i = 0; hooks[i].module_name[0]; i++)
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{
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char* imp_module_name = (char*)((DWORD)dos_header + (DWORD)(import_desc->Name));
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char* imp_module_name = (char*)((DWORD)dos_header + import_desc->Name);
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if (_stricmp(imp_module_name, hooks[i].module_name) == 0)
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{
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HMODULE cur_mod = GetModuleHandleA(hooks[i].module_name);
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PIMAGE_THUNK_DATA first_thunk =
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(PIMAGE_THUNK_DATA)((DWORD)dos_header + (DWORD)import_desc->FirstThunk);
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PIMAGE_THUNK_DATA first_thunk = (void*)((DWORD)dos_header + import_desc->FirstThunk);
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while (first_thunk->u1.Function)
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{
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@ -264,6 +264,8 @@ void hook_patch_obfuscated_iat_list(HMODULE hmod, BOOL unhook, HOOKLIST* hooks,
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first_thunk++;
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}
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break;
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}
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}
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@ -308,22 +310,25 @@ void hook_patch_iat_list(HMODULE hmod, BOOL unhook, HOOKLIST* hooks, BOOL is_loc
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for (int i = 0; hooks[i].module_name[0]; i++)
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{
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char* imp_module_name = (char*)((DWORD)dos_header + (DWORD)(import_desc->Name));
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char* imp_module_name = (char*)((DWORD)dos_header + import_desc->Name);
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if (_stricmp(imp_module_name, hooks[i].module_name) == 0)
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{
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PIMAGE_THUNK_DATA first_thunk =
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(PIMAGE_THUNK_DATA)((DWORD)dos_header + (DWORD)import_desc->FirstThunk);
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PIMAGE_THUNK_DATA first_thunk = (void*)((DWORD)dos_header + import_desc->FirstThunk);
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PIMAGE_THUNK_DATA o_first_thunk = (void*)((DWORD)dos_header + import_desc->OriginalFirstThunk);
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PIMAGE_THUNK_DATA original_first_thunk =
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(PIMAGE_THUNK_DATA)((DWORD)dos_header + (DWORD)import_desc->OriginalFirstThunk);
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while (first_thunk->u1.Function && original_first_thunk->u1.AddressOfData)
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while (first_thunk->u1.Function)
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{
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PIMAGE_IMPORT_BY_NAME import =
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(PIMAGE_IMPORT_BY_NAME)((DWORD)dos_header + original_first_thunk->u1.AddressOfData);
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if (!o_first_thunk->u1.AddressOfData)
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{
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first_thunk++;
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o_first_thunk++;
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continue;
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}
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if ((original_first_thunk->u1.Ordinal & IMAGE_ORDINAL_FLAG) == 0)
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PIMAGE_IMPORT_BY_NAME import = (void*)((DWORD)dos_header + o_first_thunk->u1.AddressOfData);
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if ((o_first_thunk->u1.Ordinal & IMAGE_ORDINAL_FLAG) == 0)
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{
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for (int x = 0; hooks[i].data[x].function_name[0]; x++)
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{
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@ -336,7 +341,7 @@ void hook_patch_iat_list(HMODULE hmod, BOOL unhook, HOOKLIST* hooks, BOOL is_loc
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if (util_is_bad_read_ptr((void*)import->Name))
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continue;
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if (_stricmp((const char*)import->Name, hooks[i].data[x].function_name) == 0)
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if (strcmp((const char*)import->Name, hooks[i].data[x].function_name) == 0)
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{
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DWORD op;
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@ -373,8 +378,10 @@ void hook_patch_iat_list(HMODULE hmod, BOOL unhook, HOOKLIST* hooks, BOOL is_loc
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}
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first_thunk++;
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original_first_thunk++;
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o_first_thunk++;
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}
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break;
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}
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}
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@ -408,7 +415,13 @@ BOOL hook_got_ddraw_import()
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while (import_desc->FirstThunk)
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{
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char* imp_module_name = (char*)((DWORD)dos_header + (DWORD)(import_desc->Name));
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if (!import_desc->Name)
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{
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import_desc++;
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continue;
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}
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char* imp_module_name = (char*)((DWORD)dos_header + import_desc->Name);
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if (_stricmp(imp_module_name, "ddraw.dll") == 0)
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{
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