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[原创]某超级模块中游戏双开功能实现
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发表于: 2013-5-6 18:38
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超级模块中有个双开功能，能够双开腾讯的大部分游戏，例如DNF。于是就下载模块下来分析了一下。
随便在网上找一个用超级模块写的双开工具。然后OD载入，下bp DeleteFileA断点。
为什么要下deleteFile断点，而不是CreateFile，是因为该模块注册驱动文件后就会将驱动文件删除。
下了断点之后点击启动双开的时候，OD断下。查看堆栈，可以看到写出的驱动路径。
将驱动文件拷贝出来，文件大小只有3kb，用IDA打开。
INIT:00010985 ; NTSTATUS __stdcall DriverEntry(PDRIVER_OBJECT DriverObject, PUNICODE_STRING RegistryPath) INIT:00010985 public DriverEntry INIT:00010985 DriverEntry proc near INIT:00010985 INIT:00010985 DriverObject = dword ptr 8 INIT:00010985 RegistryPath = dword ptr 0Ch INIT:00010985 INIT:00010985 mov edi, edi INIT:00010987 push ebp INIT:00010988 mov ebp, esp INIT:0001098A mov eax, dword_10904 INIT:0001098F test eax, eax INIT:00010991 mov ecx, 0BB40h INIT:00010996 jz short loc_1099C INIT:00010998 cmp eax, ecx INIT:0001099A jnz short loc_109BF INIT:0001099C INIT:0001099C loc_1099C: ; CODE XREF: DriverEntry+11j INIT:0001099C mov edx, ds:KeTickCount INIT:000109A2 mov eax, offset dword_10904 INIT:000109A7 shr eax, 8 INIT:000109AA xor eax, [edx] INIT:000109AC and eax, 0FFFFh INIT:000109B1 mov dword_10904, eax INIT:000109B6 jnz short loc_109BF INIT:000109B8 mov eax, ecx INIT:000109BA mov dword_10904, eax INIT:000109BF INIT:000109BF loc_109BF: ; CODE XREF: DriverEntry+15j INIT:000109BF ; DriverEntry+31j INIT:000109BF not eax INIT:000109C1 mov dword_10900, eax INIT:000109C6 pop ebp INIT:000109C7 jmp sub_106F8 INIT:000109C7 DriverEntry endp
.text:000106F8 ; int __stdcall sub_106F8(PDRIVER_OBJECT DeviceObject, int) .text:000106F8 sub_106F8 proc near ; CODE XREF: DriverEntry+42j .text:000106F8 .text:000106F8 SymbolicLinkName= UNICODE_STRING ptr -10h .text:000106F8 DestinationString= UNICODE_STRING ptr -8 .text:000106F8 DeviceObject = dword ptr 8 .text:000106F8 .text:000106F8 mov edi, edi .text:000106FA push ebp .text:000106FB mov ebp, esp .text:000106FD sub esp, 10h .text:00010700 push esi .text:00010701 mov esi, [ebp+DeviceObject] .text:00010704 push edi .text:00010705 mov edi, ds:RtlInitUnicodeString .text:0001070B push offset word_106A6 ; SourceString .text:00010710 lea eax, [ebp+DestinationString] .text:00010713 push eax ; DestinationString .text:00010714 mov dword ptr [esi+38h], offset sub_10486 //设置IRP处理函数 .text:0001071B mov dword ptr [esi+40h], offset sub_10486 .text:00010722 mov dword ptr [esi+70h], offset sub_104AA .text:00010729 mov dword ptr [esi+34h], offset sub_10670 .text:00010730 call edi ; RtlInitUnicodeString //初始化设备名称 .text:00010732 lea eax, [ebp+DeviceObject] .text:00010735 push eax ; DeviceObject .text:00010736 push 0 ; Exclusive .text:00010738 push 0 ; DeviceCharacteristics .text:0001073A push 22h ; DeviceType .text:0001073C lea eax, [ebp+DestinationString] .text:0001073F push eax ; DeviceName .text:00010740 push 0 ; DeviceExtensionSize .text:00010742 push esi ; DriverObject .text:00010743 call ds:IoCreateDevice //创建设备 .text:00010749 test eax, eax .text:0001074B jl short loc_10780 .text:0001074D push offset word_106CA ; SourceString .text:00010752 lea eax, [ebp+SymbolicLinkName] .text:00010755 push eax ; DestinationString .text:00010756 call edi ; RtlInitUnicodeString //初始化符号链接名称 .text:00010758 lea eax, [ebp+DestinationString] .text:0001075B push eax ; DeviceName .text:0001075C lea eax, [ebp+SymbolicLinkName] .text:0001075F push eax ; SymbolicLinkName .text:00010760 call ds:IoCreateSymbolicLink //创建符号链接 .text:00010766 mov esi, eax .text:00010768 test esi, esi .text:0001076A jge short loc_10779 //创建成功就跳过去 .text:0001076C push [ebp+DeviceObject] ; DeviceObject .text:0001076F call ds:IoDeleteDevice //创建失败则删除设备 .text:00010775 mov eax, esi .text:00010777 jmp short loc_10780 .text:00010779 ; --------------------------------------------------------------------------- .text:00010779 .text:00010779 loc_10779: ; CODE XREF: sub_106F8+72j .text:00010779 call sub_105C8 .text:0001077E xor eax, eax .text:00010780 .text:00010780 loc_10780: ; CODE XREF: sub_106F8+53j .text:00010780 ; sub_106F8+7Fj .text:00010780 pop edi .text:00010781 pop esi .text:00010782 leave .text:00010783 retn 8 .text:00010783 sub_106F8 endp
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 谢谢分享
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