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CrazyRedMachine 2024-04-21 15:56:55 +02:00
parent 06957c8340
commit 75ca8ba050
1 changed files with 46 additions and 11 deletions
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57
popnhax/custom_categs.cc
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@ -90,15 +90,15 @@ void (*add_song_in_list)();
void (*categ_inject_songlist)();
struct songlist_struct_s *new_song_list = NULL;
void get_subcateg_size_impl_old()
void get_subcateg_size_impl()
{
__asm("push edx\n");
__asm("mov _idx, eax\n");
tmp_size = subcategories[idx-2].size;
// tmp_categ_ptr = (uint32_t)&(subcategories[idx]);
// tmp_songlist_ptr = (uint32_t)&(subcategories[idx].songlist);
// new_song_list = (struct songlist_struct_s*) songlist_struct_addr;
new_song_list = (struct songlist_struct_s*) calloc(1, sizeof(struct songlist_struct_s));
new_song_list = (struct songlist_struct_s*) songlist_struct_addr;
// new_song_list = (struct songlist_struct_s*) calloc(1, sizeof(struct songlist_struct_s));
new_song_list->array_start = (uint32_t)&(subcategories[idx-2].songlist[0]);
new_song_list->array_end = (uint32_t)&(subcategories[idx-2].songlist[tmp_size]);
__asm("mov eax, [_tmp_size]");
@ -106,10 +106,40 @@ void get_subcateg_size_impl_old()
__asm("pop edx\n");
}
uint32_t tmp_str_addr;
void (*real_event_categ_generation)();
void hook_event_categ_generation()
{
//chaine dans [esp+0x1C], on check si l'adresse correspond à l'une de nos subcateg
//si c'est pas le cas on s'en va sans rien faire
//si c'est le cas alors on met les coord de début et fin dans la struct_songlist et on envoie l'adresse de struct sur eax
__asm("mov _new_song_list, eax"); //save original intended value
__asm("push ecx");
__asm("push edx");
__asm("mov ebx, [esp+0x2C]\n");
__asm("mov _tmp_str_addr, ebx\n");
for (uint32_t i = 0; i < subcateg_count; i++)
{
if ( (uint32_t)subcategories[i].name == tmp_str_addr )
{
tmp_size = subcategories[i].size;
new_song_list = (struct songlist_struct_s*) songlist_struct_addr;
new_song_list->array_start = (uint32_t)&(subcategories[i].songlist[0]);
new_song_list->array_end = (uint32_t)&(subcategories[i].songlist[tmp_size]);
break;
}
}
__asm("pop edx");
__asm("pop ecx");
__asm("mov eax, _new_song_list");
real_event_categ_generation();
}
uint32_t tmp_array_begin;
uint32_t tmp_array_end;
uint32_t tmp_zone;
void get_subcateg_size_impl()
void get_subcateg_size_impl_new()
{
//on ecrit dans la zone d'où la fonction habituelle lit, p'tet ça marchera
@ -165,11 +195,11 @@ void get_subcateg_name_impl()
}
uint32_t reimpl_value_1;
uint32_t reimpl_value_2;
uint32_t reimpl_value_2; //commun aux deux fonctions
void (*get_subcateg_size)() = &get_subcateg_size_impl;
void (*get_subcateg_name)() = &get_subcateg_name_impl;
void (*reimpl_func_1)();
void (*reimpl_func_2)();
void (*reimpl_func_2_generate_event_category)();
void (*reimpl_func_3)();
void (*reimpl_func_4)();
@ -229,7 +259,7 @@ __asm("mov ebx, 2\n");
__asm("push ecx\n");
__asm("mov ecx, dword ptr ss:[ebp+0x44]\n");
reimpl_func_2();
reimpl_func_2_generate_event_category();
__asm("jump_point_1:\n");
__asm("mov dword ptr ss:[esp+0x2C], 0xFFFFFFFF\n");
@ -475,16 +505,21 @@ static bool patch_custom_categ_simple(const char *game_dll_fn) {
/* retrieve useful values from this function */
reimpl_value_1 = *((uint32_t*)(function_addr +0x03));
reimpl_value_2 = *((uint32_t*)(function_addr +0x16));
reimpl_func_1 = (void (*)())( *((uint32_t*)(function_addr +0x49)) + (uint32_t)(function_addr +0x04 +0x49) );
reimpl_func_2 = (void (*)())( *((uint32_t*)(function_addr +0x73)) + (uint32_t)(function_addr +0x04 +0x73) );
reimpl_func_3 = (void (*)())( *((uint32_t*)(function_addr +0xBC)) + (uint32_t)(function_addr +0x04 +0xBC) );
reimpl_func_4 = (void (*)())( *((uint32_t*)(function_addr +0xD1)) + (uint32_t)(function_addr +0x04 +0xD1) );
reimpl_func_1 = (void (*)())( *((uint32_t*)(function_addr +0x49)) + (uint32_t)(function_addr +0x04 +0x49) );
reimpl_func_2_generate_event_category = (void (*)())( *((uint32_t*)(function_addr +0x73)) + (uint32_t)(function_addr +0x04 +0x73) );
reimpl_func_3 = (void (*)())( *((uint32_t*)(function_addr +0xBC)) + (uint32_t)(function_addr +0x04 +0xBC) );
reimpl_func_4 = (void (*)())( *((uint32_t*)(function_addr +0xD1)) + (uint32_t)(function_addr +0x04 +0xD1) );
//get_subcateg_size = (void (*)())( *((uint32_t*)(function_addr +0x37)) + (uint32_t)(function_addr +0x04 +0x37) );
//get_subcateg_name = (void (*)())( *((uint32_t*)(function_addr +0x63)) + (uint32_t)(function_addr +0x04 +0x63) );
MH_CreateHook((LPVOID)patch_addr, (LPVOID)hook_categ_listing,
(void **)&real_categ_listing);
uint64_t patch_addr_2 = (int64_t)reimpl_func_2_generate_event_category + 80;
//need to inject correct memory zone after generation as well
MH_CreateHook((LPVOID)patch_addr_2, (LPVOID)hook_event_categ_generation,
(void **)&real_event_categ_generation);
}
//add new category processing in jump table