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Rewrote d3d9 and drawing functions in x86 asm
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@0xvpr
0xvpr committed Feb 10, 2024
1 parent 710e8f2 commit 2ef1e14
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Showing 11 changed files with 380 additions and 175 deletions.
2 changes: 1 addition & 1 deletion Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -45,7 +45,7 @@ $(DEBUG): CFLAGS += -g

release: $(PROJECT)
$(PROJECT): $(BIN)/$(PROJECT).dll
$(PROJECT): CFLAGS += -march=native -mavx2 -Ofast -fPIE -funsafe-math-optimizations -fomit-frame-pointer
$(PROJECT): CFLAGS += -march=native -mavx2 -mtune=native -Ofast -fPIE -funsafe-math-optimizations -fomit-frame-pointer
$(PROJECT): CFLAGS += -funroll-loops -funsafe-loop-optimizations -funswitch-loops -floop-parallelize-all
$(PROJECT): CFLAGS += -finline-functions -falign-functions -falign-loops -falign-jumps -fno-function-sections
$(PROJECT): CFLAGS += -fno-ident -fvisibility=hidden -fstrict-aliasing
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8 changes: 8 additions & 0 deletions include/assembly.h
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@@ -1,6 +1,14 @@
#ifndef ASSEMBLY_HEADER
#define ASSEMBLY_HEADER

/* Hacking Functions */
void health_detour(void);

/* Hooking Functions */
void* hook_end_scene(void* pDevice);

/* Drawing Functions */
void drawing_draw_border_box(int x, int y, int w, int h, int thickness, unsigned color, void* d3dDevice);
void drawing_draw_filled_rect(int x, int y, int w, int h, unsigned color, void* d3dDevice);

#endif /* ASSEMBLY_HEADER */
9 changes: 0 additions & 9 deletions include/drawing.h
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163 changes: 163 additions & 0 deletions src/d3d9hook.asm
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@@ -0,0 +1,163 @@
section .data
g_window:
dd 0

section .text
extern _EnumWindows@8
extern _GetCurrentProcessId@0
extern _GetWindowThreadProcessId@8
extern _Direct3DCreate9@4
extern _memcpy

global _EnumWindowsCallback@8
global _GetProcessWindow
global _GetD3D9Device@8

_EnumWindowsCallback@8:
push ebx ; 10001360: 53
sub esp,0x28 ; 10001361: 83 ec 28
mov ebx,dword [esp+0x30] ; 10001364: 8b 5c 24 30
lea eax,[esp+0x1c] ; 10001368: 8d 44 24 1c
mov dword [esp+0x4],eax ; 1000136c: 89 44 24 04
mov dword [esp],ebx ; 10001370: 89 1c 24
call _GetWindowThreadProcessId@8 ; 10001373: ff 15 ec 80 00 10
sub esp,0x8 ; 10001379: 83 ec 08
call _GetCurrentProcessId@0 ; 1000137c: ff 15 c0 80 00 10
mov edx,eax ; 10001382: 89 c2
mov eax,0x1 ; 10001384: b8 01 00 00 00
cmp edx,dword [esp+0x1c] ; 10001389: 3b 54 24 1c
jne callback_exit ; 1000138d: 75 08
mov dword [g_window],ebx ; 1000138f: 89 1d 00 60 00 10
xor eax,eax ; 10001395: 31 c0
callback_exit:
add esp,0x28 ; 10001397: 83 c4 28
pop ebx ; 1000139a: 5b
ret 0x8 ; 1000139b: c2 08 00
xchg ax,ax ; 1000139e: 66 90

_GetProcessWindow:
sub esp,0x1c ; 100013a0: 83 ec 1c
mov dword [esp+0x4],0x0 ; 100013a3: c7 44 24 04 00 00 00
; 100013aa: 00
mov dword [esp],_EnumWindowsCallback@8 ; 100013ab: c7 04 24 60 13 00 10
mov dword [g_window],0x0 ; 100013b2: c7 05 00 60 00 10 00
; 100013b9: 00 00 00
call _EnumWindows@8 ; 100013bc: ff 15 e4 80 00 10
sub esp,0x8 ; 100013c2: 83 ec 08
mov eax,[g_window] ; 100013c5: a1 00 60 00 10
add esp,0x1c ; 100013ca: 83 c4 1c
ret ; 100013cd: c3
xchg ax,ax ; 100013ce: 66 90

_GetD3D9Device@8:
push ebp ; 100013d0: 55
push edi ; 100013d1: 57
push esi ; 100013d2: 56
push ebx ; 100013d3: 53
sub esp,0x6c ; 100013d4: 83 ec 6c
mov esi,dword [esp+0x80] ; 100013d7: 8b b4 24 80 00 00 00
test esi,esi ; 100013de: 85 f6
je d3d9_exit ; 100013e0: 0f 84 15 01 00 00
mov dword [esp],0x20 ; 100013e6: c7 04 24 20 00 00 00
call _Direct3DCreate9@4 ; 100013ed: e8 8e 18 00 00
sub esp,0x4 ; 100013f2: 83 ec 04
mov ebx,eax ; 100013f5: 89 c3
test eax,eax ; 100013f7: 85 c0
je d3d9_exit ; 100013f9: 0f 84 fc 00 00 00
lea ebp,[esp+0x28] ; 100013ff: 8d 6c 24 28
xor eax,eax ; 10001403: 31 c0
mov ecx,0xe ; 10001405: b9 0e 00 00 00
mov edi,ebp ; 1000140a: 89 ef
rep stosd; dword es:[edi],eax ; 1000140c: f3 ab
mov dword [esp+0x24],0x0 ; 1000140e: c7 44 24 24 00 00 00
; 10001415: 00
mov dword [esp+0x40],0x1 ; 10001416: c7 44 24 40 01 00 00
; 1000141d: 00
lea edi,[esp+0x24] ; 1000141e: 8d 7c 24 24
call _GetProcessWindow ; 10001422: e8 17 fc ff ff
mov dword [esp+0x44],eax ; 10001427: 89 44 24 44
mov edx,dword [ebx] ; 1000142b: 8b 13
mov dword [esp+0x48],0x1 ; 1000142d: c7 44 24 48 01 00 00
; 10001434: 00
mov dword [esp+0x18],edi ; 10001435: 89 7c 24 18
mov dword [esp+0x14],ebp ; 10001439: 89 6c 24 14
mov dword [esp+0x10],0x20 ; 1000143d: c7 44 24 10 20 00 00
; 10001444: 00
mov dword [esp+0xc],eax ; 10001445: 89 44 24 0c
mov dword [esp+0x8],0x1 ; 10001449: c7 44 24 08 01 00 00
; 10001450: 00
mov dword [esp+0x4],0x0 ; 10001451: c7 44 24 04 00 00 00
; 10001458: 00
mov dword [esp],ebx ; 10001459: 89 1c 24
call dword [edx+0x40] ; 1000145c: ff 52 40
sub esp,0x1c ; 1000145f: 83 ec 1c
test eax,eax ; 10001462: 85 c0
je clean_exit ; 10001464: 74 46
mov eax,dword [esp+0x48] ; 10001466: 8b 44 24 48
xor ecx,ecx ; 1000146a: 31 c9
test eax,eax ; 1000146c: 85 c0
mov eax,dword [ebx] ; 1000146e: 8b 03
mov dword [esp+0x14],ebp ; 10001470: 89 6c 24 14
mov ebp,dword [esp+0x44] ; 10001474: 8b 6c 24 44
sete cl ; 10001478: 0f 94 c1
mov dword [esp+0x48],ecx ; 1000147b: 89 4c 24 48
mov dword [esp+0x18],edi ; 1000147f: 89 7c 24 18
mov dword [esp+0x10],0x20 ; 10001483: c7 44 24 10 20 00 00
; 1000148a: 00
mov dword [esp+0xc],ebp ; 1000148b: 89 6c 24 0c
mov dword [esp+0x8],0x1 ; 1000148f: c7 44 24 08 01 00 00
; 10001496: 00
mov dword [esp+0x4],0x0 ; 10001497: c7 44 24 04 00 00 00
; 1000149e: 00
mov dword [esp],ebx ; 1000149f: 89 1c 24
call dword [eax+0x40] ; 100014a2: ff 50 40
sub esp,0x1c ; 100014a5: 83 ec 1c
test eax,eax ; 100014a8: 85 c0
jne d3d9_exit ; 100014aa: 75 44
clean_exit:
mov edi,dword [esp+0x24] ; 100014ac: 8b 7c 24 24
mov edx,dword [esp+0x84] ; 100014b0: 8b 94 24 84 00 00 00
mov ecx,dword [edi] ; 100014b7: 8b 0f
mov dword [esp+0x8],edx ; 100014b9: 89 54 24 08
mov dword [esp+0x4],ecx ; 100014bd: 89 4c 24 04
mov dword [esp],esi ; 100014c1: 89 34 24
call _memcpy ; 100014c4: e8 07 18 00 00
mov esi,dword [edi] ; 100014c9: 8b 37
mov dword [esp],edi ; 100014cb: 89 3c 24
call dword [esi+0x8] ; 100014ce: ff 56 08
sub esp,0x4 ; 100014d1: 83 ec 04
mov eax,dword [ebx] ; 100014d4: 8b 03
mov dword [esp],ebx ; 100014d6: 89 1c 24
call dword [eax+0x8] ; 100014d9: ff 50 08
sub esp,0x4 ; 100014dc: 83 ec 04
add esp,0x6c ; 100014df: 83 c4 6c
pop ebx ; 100014e2: 5b
pop esi ; 100014e3: 5e
pop edi ; 100014e4: 5f
mov eax,0x1 ; 100014e5: b8 01 00 00 00
pop ebp ; 100014ea: 5d
ret ; 100014eb: c3
lea esi,[esi+0x0] ; 100014ec: 8d 74 26 00
mov ebp,dword [ebx] ; 100014f0: 8b 2b
mov dword [esp],ebx ; 100014f2: 89 1c 24
call dword [ebp+0x8] ; 100014f5: ff 55 08
sub esp,0x4 ; 100014f8: 83 ec 04
d3d9_exit:
add esp,0x6c ; 100014fb: 83 c4 6c
pop ebx ; 100014fe: 5b
pop esi ; 100014ff: 5e
pop edi ; 10001500: 5f
xor eax,eax ; 10001501: 31 c0
pop ebp ; 10001503: 5d
ret ; 10001504: c3
nop ; 10001505: 90
nop ; 10001506: 90
nop ; 10001507: 90
nop ; 10001508: 90
nop ; 10001509: 90
nop ; 1000150a: 90
nop ; 1000150b: 90
nop ; 1000150c: 90
nop ; 1000150d: 90
nop ; 1000150e: 90
nop ; 1000150f: 90
71 changes: 0 additions & 71 deletions src/d3d9hook.c
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