Game crashes when moving units #82
Description
Game crashes when moving units in a certain way. I will not describe Repro Steps here.
GenTool fixes it by injecting naked function at address 0x5517C9 taking 7 bytes.
game.dat
// CPU Disasm (Zero Hour 1.04)
// Address Hex dump Command Comments
// 005517C9 |. F686 10010000 08 TEST BYTE PTR DS:[ESI+110],08
// 005517D0 |. 0F85 00030000 JNE 00551AD6
// 005517D6 |. 3BEF CMP EBP,EDI
// 005517D8 |. 8B8E 64020000 MOV ECX,DWORD PTR DS:[ESI+264]
// 005517DE |. 8B96 68020000 MOV EDX,DWORD PTR DS:[ESI+268]
// 005517E4 |. 8B9E 7C010000 MOV EBX,DWORD PTR DS:[ESI+17C] crash, EBX is 0
// 005517EA |. 894C24 38 MOV DWORD PTR SS:[ESP+38],ECX
// 005517EE |. 895424 3C MOV DWORD PTR SS:[ESP+3C],EDX
// 005517F2 |. 0F84 10030000 JE 00551B08
DWORD ccFixRet;
__declspec(naked) void CC_FixCrash_ZH()
{
__asm pop [ccFixRet]
__asm TEST BYTE PTR DS:[ESI+0x110],0x08
__asm jne Continue
__asm mov ebx,dword ptr ds:[esi+0x17C]
__asm test ebx,ebx
__asm je Abort
__asm jmp Continue
Abort:
__asm cmp ebx,1
__asm push [ccFixRet]
__asm ret
Continue:
__asm TEST BYTE PTR DS:[ESI+0x110],0x08
__asm push [ccFixRet]
__asm ret
}