2024-11-06 06:46:35 +08:00
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#include"VanillawareGC.h"
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/** jichi 7/20/2014 Vanillaware
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* Tested game: 朧村正
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*
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* Debugging method: grep the saving message
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*
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* 1609415e cc int3
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* 1609415f cc int3
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* 16094160 77 0f ja short 16094171
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* 16094162 c705 00fb6701 80>mov dword ptr ds:[0x167fb00],0x80216b80
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* 1609416c -e9 f9be06f1 jmp 0710006a
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* 16094171 8b35 8cf86701 mov esi,dword ptr ds:[0x167f88c]
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* 16094177 81c6 ffffffff add esi,-0x1
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* 1609417d 8bce mov ecx,esi
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* 1609417f 81c1 01000000 add ecx,0x1
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* 16094185 f7c1 0000000c test ecx,0xc000000
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* 1609418b 74 0b je short 16094198
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* 1609418d 51 push ecx
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* 1609418e e8 36bff9f2 call 090300c9
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* 16094193 83c4 04 add esp,0x4
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* 16094196 eb 11 jmp short 160941a9
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* 16094198 8bc1 mov eax,ecx
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* 1609419a 81e0 ffffff3f and eax,0x3fffffff
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* 160941a0 0fb680 00000810 movzx eax,byte ptr ds:[eax+0x10080000] ; jichi: hook here
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* 160941a7 66:90 nop
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* 160941a9 81c6 01000000 add esi,0x1
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* 160941af 8905 80f86701 mov dword ptr ds:[0x167f880],eax
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* 160941b5 813d 80f86701 00>cmp dword ptr ds:[0x167f880],0x0
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* 160941bf c705 8cf86701 00>mov dword ptr ds:[0x167f88c],0x0
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* 160941c9 8935 90f86701 mov dword ptr ds:[0x167f890],esi
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* 160941cf 7c 14 jl short 160941e5
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* 160941d1 7f 09 jg short 160941dc
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* 160941d3 c605 0cfb6701 02 mov byte ptr ds:[0x167fb0c],0x2
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* 160941da eb 26 jmp short 16094202
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* 160941dc c605 0cfb6701 04 mov byte ptr ds:[0x167fb0c],0x4
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* 160941e3 eb 07 jmp short 160941ec
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* 160941e5 c605 0cfb6701 08 mov byte ptr ds:[0x167fb0c],0x8
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* 160941ec 832d 7c4cb101 06 sub dword ptr ds:[0x1b14c7c],0x6
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* 160941f3 e9 20000000 jmp 16094218
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* 160941f8 0188 6b2180e9 add dword ptr ds:[eax+0xe980216b],ecx
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* 160941fe 0e push cs
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* 160941ff be 06f1832d mov esi,0x2d83f106
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* 16094204 7c 4c jl short 16094252
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* 16094206 b1 01 mov cl,0x1
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* 16094208 06 push es
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* 16094209 e9 c2000000 jmp 160942d0
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* 1609420e 0198 6b2180e9 add dword ptr ds:[eax+0xe980216b],ebx
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* 16094214 f8 clc
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* 16094215 bd 06f1770f mov ebp,0xf77f106
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* 1609421a c705 00fb6701 88>mov dword ptr ds:[0x167fb00],0x80216b88
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* 16094224 -e9 41be06f1 jmp 0710006a
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* 16094229 8b0d 90f86701 mov ecx,dword ptr ds:[0x167f890]
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* 1609422f 81c1 01000000 add ecx,0x1
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* 16094235 f7c1 0000000c test ecx,0xc000000
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* 1609423b 74 0b je short 16094248
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* 1609423d 51 push ecx
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* 1609423e e8 86bef9f2 call 090300c9
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* 16094243 83c4 04 add esp,0x4
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* 16094246 eb 11 jmp short 16094259
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* 16094248 8bc1 mov eax,ecx
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* 1609424a 81e0 ffffff3f and eax,0x3fffffff
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* 16094250 0fb680 00000810 movzx eax,byte ptr ds:[eax+0x10080000]
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* 16094257 66:90 nop
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* 16094259 8b35 90f86701 mov esi,dword ptr ds:[0x167f890]
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* 1609425f 81c6 01000000 add esi,0x1
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* 16094265 8905 80f86701 mov dword ptr ds:[0x167f880],eax
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* 1609426b 8105 8cf86701 01>add dword ptr ds:[0x167f88c],0x1
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* 16094275 813d 80f86701 00>cmp dword ptr ds:[0x167f880],0x0
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* 1609427f 8935 90f86701 mov dword ptr ds:[0x167f890],esi
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* 16094285 7c 14 jl short 1609429b
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* 16094287 7f 09 jg short 16094292
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* 16094289 c605 0cfb6701 02 mov byte ptr ds:[0x167fb0c],0x2
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* 16094290 eb 26 jmp short 160942b8
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* 16094292 c605 0cfb6701 04 mov byte ptr ds:[0x167fb0c],0x4
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* 16094299 eb 07 jmp short 160942a2
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* 1609429b c605 0cfb6701 08 mov byte ptr ds:[0x167fb0c],0x8
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* 160942a2 832d 7c4cb101 04 sub dword ptr ds:[0x1b14c7c],0x4
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* 160942a9 ^e9 6affffff jmp 16094218
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* 160942ae 0188 6b2180e9 add dword ptr ds:[eax+0xe980216b],ecx
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* 160942b4 58 pop eax
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* 160942b5 bd 06f1832d mov ebp,0x2d83f106
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* 160942ba 7c 4c jl short 16094308
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* 160942bc b1 01 mov cl,0x1
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* 160942be 04 e9 add al,0xe9
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* 160942c0 0c 00 or al,0x0
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* 160942c2 0000 add byte ptr ds:[eax],al
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* 160942c4 0198 6b2180e9 add dword ptr ds:[eax+0xe980216b],ebx
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* 160942ca 42 inc edx
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* 160942cb bd 06f1cccc mov ebp,0xccccf106
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* 160942d0 77 0f ja short 160942e1
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* 160942d2 c705 00fb6701 98>mov dword ptr ds:[0x167fb00],0x80216b98
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* 160942dc -e9 89bd06f1 jmp 0710006a
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* 160942e1 8b05 84fb6701 mov eax,dword ptr ds:[0x167fb84]
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* 160942e7 81e0 fcffffff and eax,0xfffffffc
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* 160942ed 8905 00fb6701 mov dword ptr ds:[0x167fb00],eax
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* 160942f3 832d 7c4cb101 01 sub dword ptr ds:[0x1b14c7c],0x1
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* 160942fa -e9 11bd06f1 jmp 07100010
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* 160942ff 832d 7c4cb101 01 sub dword ptr ds:[0x1b14c7c],0x1
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* 16094306 ^e9 91f8ffff jmp 16093b9c
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* 1609430b cc int3
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*/
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namespace { // unnamed
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// Return true if the text is a garbage character
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inline bool _vanillawaregarbage_ch(char c)
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{
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return c == ' ' || c == '.' || c == '/'
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|| c >= '0' && c <= '9'
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|| c >= 'A' && c <= 'z' // also ignore ASCII 91-96: [ \ ] ^ _ `
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;
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}
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// Return true if the text is full of garbage characters
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bool _vanillawaregarbage(LPCSTR p)
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{
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enum { MAX_LENGTH = VNR_TEXT_CAPACITY };
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for (int count = 0; *p && count < MAX_LENGTH; count++, p++)
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if (!_vanillawaregarbage_ch(*p))
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return false;
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return true;
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}
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} // unnamed namespace
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2024-12-09 21:02:20 +08:00
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static void SpecialGCHookVanillaware(hook_context *context, HookParam *hp, TextBuffer *buffer, uintptr_t *split)
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2024-11-06 06:46:35 +08:00
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{
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2024-12-09 21:02:20 +08:00
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DWORD eax = context->eax;
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2024-11-06 06:46:35 +08:00
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LPCSTR text = LPCSTR(eax + hp->user_value);
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static LPCSTR lasttext;
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if (lasttext != text && *text && !_vanillawaregarbage(text)) {
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lasttext = text;
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2024-12-09 21:02:20 +08:00
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*split = context->ecx;
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2024-11-28 11:55:41 +08:00
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buffer->from(text);
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2024-11-06 06:46:35 +08:00
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//*split = FIXED_SPLIT_VALUE;
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}
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}
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bool InsertVanillawareGCHook()
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{
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ConsoleOutput("Vanillaware GC: enter");
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const BYTE bytes[] = {
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0x83,0xc4, 0x04, // 16094193 83c4 04 add esp,0x4
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0xeb, 0x11, // 16094196 eb 11 jmp short 160941a9
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0x8b,0xc1, // 16094198 8bc1 mov eax,ecx
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0x81,0xe0, 0xff,0xff,0xff,0x3f, // 1609419a 81e0 ffffff3f and eax,0x3fffffff
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0x0f,0xb6,0x80, XX4, // 160941a0 0fb680 00000810 movzx eax,byte ptr ds:[eax+0x10080000] ; jichi: hook here
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0x66,0x90, // 160941a7 66:90 nop
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0x81,0xc6, 0x01,0x00,0x00,0x00 // 160941a9 81c6 01000000 add esi,0x1
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//0x89,05 80f86701 // 160941af 8905 80f86701 mov dword ptr ds:[0x167f880],eax
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//0x81,3d 80f86701 00 // 160941b5 813d 80f86701 00>cmp dword ptr ds:[0x167f880],0x0
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//0xc7,05 8cf86701 00 // 160941bf c705 8cf86701 00>mov dword ptr ds:[0x167f88c],0x0
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//0x89,35 90f86701 // 160941c9 8935 90f86701 mov dword ptr ds:[0x167f890],esi
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//0x7c, 14 // 160941cf 7c 14 jl short 160941e5
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//0x7f, 09 // 160941d1 7f 09 jg short 160941dc
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//0xc6,05 0cfb6701 02 // 160941d3 c605 0cfb6701 02 mov byte ptr ds:[0x167fb0c],0x2
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//0xeb, 26 // 160941da eb 26 jmp short 16094202
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};
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enum { memory_offset = 3 }; // 160941a0 0fb680 00000810 movzx eax,byte ptr ds:[eax+0x10080000]
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enum { addr_offset = 0x160941a0 - 0x16094193 };
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DWORD addr = SafeMatchBytesInGCMemory(bytes, sizeof(bytes));
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auto succ=false;
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if (!addr)
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ConsoleOutput("Vanillaware GC: pattern not found");
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else {
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HookParam hp;
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hp.address = addr + addr_offset;
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hp.user_value = *(DWORD *)(hp.address + memory_offset);
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hp.text_fun = SpecialGCHookVanillaware;
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hp.type = USING_STRING|NO_CONTEXT; // no context is needed to get rid of variant retaddr
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ConsoleOutput("Vanillaware GC: INSERT");
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succ|=NewHook(hp, "Vanillaware GC");
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}
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ConsoleOutput("Vanillaware GC: leave");
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return succ;
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}
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/** jichi 7/20/2014 Dolphin
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* Tested with Dolphin 4.0
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*/
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bool InsertGCHooks()
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{
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// TODO: Add generic hooks
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return InsertVanillawareGCHook();
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//return false;
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}
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bool VanillawareGC::attach_function() {
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return InsertGCHooks();
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}
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