dnf輔助外掛C源代碼(僅供學(xué)習(xí)參考)

1、獨釣寒江雪由于我的C用的比較少，所以大部分都用的匯編，部分地方用匯編寫不是很方便，所以我用的C，由于只是學(xué)習(xí)，所以內(nèi)核地址我沒有計算都是硬編碼的。過DNF主要分為三步，也許我的思路不太正確，反正可以O(shè)D調(diào)試，下斷。程序沒怎么修邊幅，因為只是測試，所以一般都沒有寫更改內(nèi)核后的恢復(fù)，不過不妨礙使用。第一步，這也是最起碼的，你必須要能夠打開游戲進(jìn)程和線程，能夠開打進(jìn)程和線程后不被檢測到第二步，能夠讀寫進(jìn)村內(nèi)存第三步，能夠用OD附加游戲進(jìn)程第四步，能夠下硬件斷點而不被檢測跳過NtReadVirtualMemory，NtWriteVirtualMemory函數(shù)頭的鉤子代碼:#include typede

2、f struct _SERVICE_DESCRIPTOR_TABLEPVOID ServiceTableBase;PULONG ServiceCounterTableBase;ULONG NumberOfService;ULONG ParamTableBase;SERVICE_DESCRIPTOR_TABLE,*PSERVICE_DESCRIPTOR_TABLE; /由于KeServiceDescriptorTable只有一項,這里就簡單點了extern PSERVICE_DESCRIPTOR_TABLE KeServiceDescriptorTable;/KeServiceDescripto

3、rTable為導(dǎo)出函數(shù)/VOID Hook(;VOID Unhook(;VOID OnUnload(IN PDRIVER_OBJECT DriverObject;/ULONG JmpAddress;/跳轉(zhuǎn)到NtOpenProcess里的地址ULONG JmpAddress1;/跳轉(zhuǎn)到NtOpenProcess里的地址ULONG OldServiceAddress;/原來NtOpenProcess的服務(wù)地址ULONG OldServiceAddress1;/原來NtOpenProcess的服務(wù)地址/_declspec(naked NTSTATUS _stdcall MyNtReadVirtual

4、Memory(HANDLE ProcessHandle,PVOID BaseAddress,PVOID Buffer,ULONG NumberOfBytesToRead,PULONG NumberOfBytesReaded /跳過去_asmpush 0x1cpush 804eb560h /共十個字節(jié)jmp JmpAddress _declspec(naked NTSTATUS _stdcall MyNtWriteVirtualMemory(HANDLE ProcessHandle,PVOID BaseAddress,PVOID Buffer,ULONG NumberOfBytesToWrite

5、,PULONG NumberOfBytesReaded /跳過去_asmpush 0x1cpush 804eb560h /共十個字節(jié)jmp JmpAddress1 /NTSTATUS DriverEntry(IN PDRIVER_OBJECT DriverObject,PUNICODE_STRING RegistryPathDriverObject->DriverUnload = OnUnload;DbgPrint("Unhooker load"Hook(;return STATUS_SUCCESS;/VOID OnUnload(IN PDRIVER_OBJECT D

6、riverObjectDbgPrint("Unhooker unload!"Unhook(;/VOID Hook(ULONG Address, Address1;Address = (ULONGKeServiceDescriptorTable->ServiceTableBase + 0xBA * 4;/0x7A為NtOpenProcess服務(wù)IDAddress1 = (ULONGKeServiceDescriptorTable->ServiceTableBase + 0x115 * 4;/0x7A為NtOpenProcess服務(wù)IDDbgPrint("

7、Address:0x%08X",Address;OldServiceAddress = *(ULONG*Address;/保存原來NtOpenProcess的地址OldServiceAddress1 = *(ULONG*Address1;/保存原來NtOpenProcess的地址DbgPrint("OldServiceAddress:0x%08X",OldServiceAddress;DbgPrint("OldServiceAddress1:0x%08X",OldServiceAddress1;DbgPrint("MyNtOpenPr

8、ocess:0x%08X",MyNtReadVirtualMemory;DbgPrint("MyNtOpenProcess:0x%08X",MyNtWriteVirtualMemory;JmpAddress = (ULONG0x805b528a + 7; /跳轉(zhuǎn)到NtOpenProcess函數(shù)頭10的地方，這樣在其前面寫的JMP都失效了JmpAddress1 = (ULONG0x805b5394 + 7;DbgPrint("JmpAddress:0x%08X",JmpAddress;DbgPrint("JmpAddress1:0x%0

9、8X",JmpAddress1;_asm /去掉內(nèi)存保護(hù)climov eax,cr0and eax,not 10000hmov cr0,eax*(ULONG*Address = (ULONGMyNtReadVirtualMemory;/HOOK SSDT*(ULONG*Address1 = (ULONGMyNtWriteVirtualMemory;_asm /恢復(fù)內(nèi)存保護(hù) mov eax,cr0or eax,10000hmov cr0,eaxsti/VOID Unhook(ULONG Address, Address1;Address = (ULONGKeServiceDescrip

10、torTable->ServiceTableBase + 0xBA * 4;/查找SSDTAddress1 = (ULONGKeServiceDescriptorTable->ServiceTableBase + 0x115 * 4;_asmclimov eax,cr0and eax,not 10000hmov cr0,eax*(ULONG*Address = (ULONGOldServiceAddress;/還原SSDT*(ULONG*Address1 = (ULONGOldServiceAddress1;/還原SSDT_asm mov eax,cr0or eax,10000hm

11、ov cr0,eaxstiDbgPrint("Unhook"由于它不斷對DebugPort清零，所以要修改調(diào)試相關(guān)函數(shù)，使得所有的訪問DebugPort的地方全部訪問EPROCESS中的ExitTime字節(jié)，這樣它怎么清零都無效了，也檢測不到代碼:.386.model flat, stdcalloption casemap:noneinclude dnf_hook.inc.constDspdo_1 equ 80643db6hDmpp_1 equ 80642d5ehDmpp_2 equ 80642d64hDct_1 equ 806445d3hDqm_1 equ 8064308

12、9hKde_1 equ 804ff5fdhDfe_1 equ 80644340hPcp_1 equ 805d1a0dhMcp_1 equ 805b0c06hMcp_2 equ 805b0d7fhDmvos_1 equ 8064497fhDumvos_1 equ 80644a45hPet_1 equ 805d32f8hDet_1 equ 8064486chDep_1 equ 806448e6h.code;還原自己的HookDriverUnload proc pDriverObject:PDRIVER_OBJECTret DriverUnload endpModifyFuncAboutDbg pr

13、oc addrOdFunc, cmd_1, cmd_2pushadmov ebx, addrOdFuncmov eax, cmd_1mov DWORD ptr ebx, eaxmov eax, cmd_2mov DWORD ptr ebx + 4, eaxpopadret ModifyFuncAboutDbg endpDriverEntry proc pDriverObject:PDRIVER_OBJECT, pusRegistryPath:PUNICODE_STRINGclimov eax, cr0and eax, not 10000hmov cr0, eaxinvoke ModifyFun

14、cAboutDbg, Dspdo_1, 90784789h, 0fde89090hinvoke ModifyFuncAboutDbg, Dmpp_1, 90787e39h, 950f9090hinvoke ModifyFuncAboutDbg, Dct_1, 90785e39h, 840f9090hinvoke ModifyFuncAboutDbg, Dqm_1, 9078408bh, 45899090hinvoke ModifyFuncAboutDbg, Kde_1, 90787839h, 13749090hinvoke ModifyFuncAboutDbg, Dfe_1, 9078418b

15、h, 0d2329090hinvoke ModifyFuncAboutDbg, Pcp_1, 90784389h, 45f69090hinvoke ModifyFuncAboutDbg, Mcp_1, 90785e39h, 950f9090hinvoke ModifyFuncAboutDbg, Mcp_2, 90784a89h, 5e399090hinvoke ModifyFuncAboutDbg, Dmvos_1, 9078498bh, 0cb3b9090hinvoke ModifyFuncAboutDbg, Dumvos_1, 00787983h, 74909090hinvoke Modi

16、fyFuncAboutDbg, Pet_1, 00787f83h, 74909090hinvoke ModifyFuncAboutDbg, Det_1, 9078498bh, 0c9859090hinvoke ModifyFuncAboutDbg, Dep_1, 9078498bh, 0c9859090h;invoke ModifyFuncAboutDbg, Dmpp_2, 8bc0950fh, 8b90c032hmov eax, pDriverObjectassume eax : ptr DRIVER_OBJECTmov eax.DriverUnload, offset DriverUnlo

17、adassume eax : nothingmov eax, cr0or eax, 10000hmov cr0, eaxstimov eax, STATUS_SUCCESSretDriverEntry endpend DriverEntry繞過NtOpenProcess，NtOpenThread，KiAttachProcess以及最重要的，不能讓它檢測到有硬件斷點，所以要對CONTEXT做一些偽裝，把真實的DR0DR7的數(shù)據(jù)存放到別的地方，OD訪問的時候返回正確的數(shù)據(jù)，如果是DNF要獲取上下文，就稍微做下手腳代碼:.386.model flat, stdcalloption casemap:n

18、oneinclude dnf_hook.inc.constNtOpenProcessHookAddr equ 805cc626hNtOpenProcessRetAddr equ 805cc631hNtOpenProcessNoChange equ 805cc62chNtOpenThreadHookAddr equ 805cc8a8hNtOpenThreadRetAddr equ 805cc8b3hNtOpenThreadNoChange equ 805cc8aehKiAttachProcessAddr equ 804f9a08hKiAttachProcessRetAddr equ 804f9a

19、0fhObOpenObjectByPointerAddr equ 805bcc78hNtGetContextThreadAddr equ 805d2551h;805c76a3hNtGetContextThreadRetAddr equ 805c76a7h;805d2555h.datanameOffset dd ?threadCxtLink dd 0tmpLink dd ?.codeGetProcessName procinvoke PsGetCurrentProcessmov ebx, eaxadd ebx, nameOffsetinvoke DbgPrint, $CTA0("n&q

20、uot;push ebxinvoke DbgPrint, ebxpop ebxinvoke strncmp, $CTA0("DNF.exe", ebx, 6push eaxinvoke DbgPrint, $CTA0("n"pop eaxretGetProcessName endpHookCode proc;執(zhí)行被覆蓋的代碼push dword ptr ebp-38hpush dword ptr ebp-24h;判斷是否dnf的進(jìn)程invoke GetProcessName.if !eax ;如果是DNF自己的進(jìn)程，那么跳轉(zhuǎn)回去執(zhí)行它的Hook代碼pus

21、hadinvoke DbgPrint, $CTA0("nNotUnHookn"popadmov eax, NtOpenProcessNoChange;805c13e6hjmp eax.else ;如果不是DNF自己的進(jìn)程，那么直接調(diào)用ObOpenObjectByPointer，再返回到后面pushadinvoke DbgPrint, $CTA0("nUnHookn"popadmov eax, ObOpenObjectByPointerAddr;805b13f0hcall eaxmov ebx, NtOpenProcessRetAddr;805c13ebh

22、jmp ebx.endifHookCode endp;獲取系統(tǒng)名稱偏移GetNameOffset proc epelocal tmpOffsetpushadmov ebx, epeinvoke strlen, $CTA0("System"xor ecx, ecx:push eaxpush ecxinvoke strncmp, $CTA0("System", ebx, eaxpop ecx.if !eaxpop eaxmov tmpOffset, ecxpopadmov eax, tmpOffsetret.elseifpop eaxinc ebxinc e

23、cxcmp ecx, 4096je Fjmp B.endif:popadmov eax, -1retGetNameOffset endpHook procpushad;頭5字節(jié)跳轉(zhuǎn)mov eax, offset HookCodesub eax, NtOpenProcessHookAddr;805c13e0h;805c13edhsub eax, 5mov ebx, NtOpenProcessHookAddr;805c13e0h;805c13edhmov cl, 0E9hmov BYTE PTR ebx, clmov DWORD PTR ebx + 1, eaxpopadretHook endpH

24、ookThreadCode proc;執(zhí)行被覆蓋的代碼push dword ptr ebp-34hpush dword ptr ebp-20h;判斷是否dnf的進(jìn)程invoke GetProcessName.if !eax ;如果是DNF自己的進(jìn)程，那么跳轉(zhuǎn)回去執(zhí)行它的Hook代碼pushadinvoke DbgPrint, $CTA0("nNotUnHookn"popadmov eax, NtOpenThreadNoChange;805c13e6hjmp eax.else ;如果不是DNF自己的進(jìn)程，那么直接調(diào)用ObOpenObjectByPointer，再返回到后面pu

25、shadinvoke DbgPrint, $CTA0("nUnHookn"popadmov eax, ObOpenObjectByPointerAddr;805b13f0hcall eaxmov ebx, NtOpenThreadRetAddr;805c13ebhjmp ebx.endifHookThreadCode endpHookThread procpushad;頭5字節(jié)跳轉(zhuǎn)mov eax, offset HookThreadCodesub eax, NtOpenThreadHookAddr;805c13e0h;805c13edhsub eax, 5mov ebx,

26、NtOpenThreadHookAddr;805c13e0h;805c13edhmov cl, 0E9hmov BYTE PTR ebx, clmov DWORD PTR ebx + 1, eaxpopadretHookThread endpHookDbg procmov edi, edipush ebpmov ebp, esppush ebxpush esimov esi, KiAttachProcessRetAddrjmp esiHookDbg endpDbg procpushad;頭5字節(jié)跳轉(zhuǎn)mov eax, offset HookDbgsub eax, KiAttachProcessA

27、ddr;805c13e0h;805c13edhsub eax, 5mov ebx, KiAttachProcessAddr;805c13e0h;805c13edhmov cl, 0E9hmov BYTE PTR ebx, clmov DWORD PTR ebx + 1, eaxpopadretDbg endp;還原自己的HookDriverUnload proc pDriverObject:PDRIVER_OBJECTclimov eax, cr0and eax, not 10000hmov cr0, eax;還原進(jìn)程處理mov eax, 0ffc875ffhmov ebx, 805cc656

28、hmov DWORD ptr ebx, eaxmov eax, 43e8dc75hmov DWORD ptr ebx + 4, eax;還原線程處理mov eax, 0ffcc75ffhmov ebx, 805cc8d8hmov DWORD ptr ebx, eaxmov eax, 0c1e8e075hmov DWORD ptr ebx + 4, eax;還原調(diào)試處理mov eax, 08b55ff8bhmov ebx, 804f9a08hmov DWORD ptr ebx, eaxmov eax, 08b5653echmov DWORD ptr ebx + 4, eaxmov eax, cr

29、0or eax, 10000hmov cr0, eaxstiret DriverUnload endp;顯示LinkTable的信息ShowLinkTableInfo proc ptrLTpushadinvoke DbgPrint, $CTA0("nThe LinkTable Info:n"mov ebx, ptrLTmov eax, (LinkTable ptr ebx.ThreadHandleinvoke DbgPrint, $CTA0("ThreadHandle:%0Xn", eaxmov ebx, ptrLTmov eax, (LinkTable

30、 ptr ebx.Dr0Seginvoke DbgPrint, $CTA0("Dr0Seg:%0Xn", eaxmov ebx, ptrLTmov eax, (LinkTable ptr ebx.Dr1Seginvoke DbgPrint, $CTA0("Dr1Seg:%0Xn", eaxmov ebx, ptrLTmov eax, (LinkTable ptr ebx.Dr2Seginvoke DbgPrint, $CTA0("Dr2Seg:%0Xn", eaxmov ebx, ptrLTmov eax, (LinkTable pt

31、r ebx.Dr3Seginvoke DbgPrint, $CTA0("Dr3Seg:%0Xn", eaxmov ebx, ptrLTmov eax, (LinkTable ptr ebx.Dr6Seginvoke DbgPrint, $CTA0("Dr6Seg:%0Xn", eaxmov ebx, ptrLTmov eax, (LinkTable ptr ebx.Dr7Seginvoke DbgPrint, $CTA0("Dr7Seg:%0Xn", eaxmov ebx, ptrLTmov eax, (LinkTable ptr e

32、bx.LinkPtrinvoke DbgPrint, $CTA0("LinkPtr:%0Xn", eaxmov ebx, ptrLTmov eax, (LinkTable ptr ebx.NextLinkPtrinvoke DbgPrint, $CTA0("NextLinkPtr:%0Xn", eaxpopadretShowLinkTableInfo endp ;判斷該線程是否存在;如果不存在則返回0，存在則返回指向該鏈表的指針，1代表鏈表為空ExsitsLinkTable proc pHandlepushadmov eax, threadCxtLink

33、.if !eax ;鏈表為空pushadinvoke DbgPrint, $CTA0("nLinkTable Is Null.n"popad popadmov eax, 1ret.endif:mov ebx, (LinkTable ptr eax.ThreadHandlecmp ebx, pHandle ;如果匹配已經(jīng)存在je Fmov eax, (LinkTable ptr eax.NextLinkPtr.if !eax ;已經(jīng)到達(dá)末尾，沒有找到匹配pushadinvoke DbgPrint, $CTA0("pHandle Is Not Found.n"

34、;popadpopadxor eax, eaxret.endifjmp B:pushadinvoke DbgPrint, $CTA0("npHandle Is Exsits.n"popadinvoke ShowLinkTableInfo, eax;返回鏈表指針mov tmpLink, eaxpopadmov eax, tmpLinkretExsitsLinkTable endp;拷貝Context到LinkTable中CopyContextToLinkTable proc ptrContext, ptrLTpushadmov ebx, ptrContextmov edx,

35、ptrLTmov ecx, 4:mov eax, DWORD ptr ebx + ecxmov DWORD ptr edx + ecx, eaxadd ecx, 4cmp ecx, 18hjbe BpopadretCopyContextToLinkTable endp;添加LinkTable表AddLinkTable proc pHandle, ptrContextpushadinvoke ExsitsLinkTable, pHandle.if eax > 1;已經(jīng)存在只需要更新dr寄存器即可invoke CopyContextToLinkTable, eax, ptrContext.e

36、lsepush eaxinvoke ExAllocatePool, 1, size LinkTable.if eax;申請內(nèi)存成功mov ebx, eaxpop eax;置地一個元素mov ecx, pHandlemov (LinkTable ptr ebx.ThreadHandle, ecx;拷貝dr寄存器的值invoke CopyContextToLinkTable, ptrContext, ebx;置另外兩個元素mov (LinkTable ptr ebx.LinkPtr, ebxmov (LinkTable ptr ebx.NextLinkPtr, 0invoke ShowLinkTa

37、bleInfo, ebx;把新的鏈表項添加到鏈表中.if eax = 1;如果鏈表為空，直接加在表頭mov threadCxtLink, ebx.else;如果鏈表不為空則加到末尾mov eax, threadCxtLink:;指向下一個元素mov ecx, (LinkTable ptr eax.NextLinkPtrtest ecx, ecxje Fmov eax, ecxjmp B:mov (LinkTable ptr eax.NextLinkPtr, ebx.endif.else;申請內(nèi)存失敗pop eaxpushadinvoke DbgPrint, $CTA0("nAlloc

38、 Memory Faild.n"popadjmp F.endif.endif:popadretAddLinkTable endp;判斷進(jìn)程是否過慮進(jìn)程;如果是需要過慮的進(jìn)程返回值為1，否則返回0IsFilterProcess procpushad;獲取當(dāng)前進(jìn)程名invoke PsGetCurrentProcessmov ebx, eaxadd ebx, nameOffsetinvoke DbgPrint, $CTA0("n%s: Call NtGetContextThread n", ebxinvoke strncmp, $CTA0("DNF.exe&q

39、uot;, ebx, 7test eax, eaxjne Fpopadmov eax, 1ret:popadxor eax, eaxretIsFilterProcess endp;顯示Context的調(diào)試寄存器ShowDrRegInfo proc ptrContextpushadinvoke DbgPrint, $CTA0("nThe Context Info:n"mov ebx, ptrContextmov eax, DWORD ptr ebx + 4invoke DbgPrint, $CTA0("Dr0:%0Xn", eaxmov ebx, ptrC

40、ontextmov eax, DWORD ptr ebx + 8invoke DbgPrint, $CTA0("Dr1:%0Xn", eaxmov ebx, ptrContextmov eax, DWORD ptr ebx + 0chinvoke DbgPrint, $CTA0("Dr2:%0Xn", eaxmov ebx, ptrContextmov eax, DWORD ptr ebx + 10hinvoke DbgPrint, $CTA0("Dr3:%0Xn", eaxmov ebx, ptrContextmov eax, DW

41、ORD ptr ebx + 14hinvoke DbgPrint, $CTA0("Dr6:%0Xn", eaxmov ebx, ptrContextmov eax, DWORD ptr ebx + 18hinvoke DbgPrint, $CTA0("Dr7:%0Xn", eaxpopadretShowDrRegInfo endp;恢復(fù)被隱藏的dr寄存器RecoveryDrReg proc ptrContext, pHandlepushad;定位到LinkTablemov ebx, threadCxtLinkNEXT:test ebx, ebxjne F

42、 ;如果沒有遍歷完popadret:mov eax, (LinkTable ptr ebx.ThreadHandlecmp eax, pHandleje F ;如果找到匹配項mov ebx, (LinkTable ptr ebx.NextLinkPtrjmp NEXT:;拷貝完畢后立即結(jié)束invoke CopyContextToLinkTable, ebx, ptrContextxor ebx, ebxjmp NEXTRecoveryDrReg endp;清空Context的dr寄存器ClearDrReg proc ptrContextpushadmov ebx, ptrContextmov ecx, 4:mov DWORD ptr ebx + ecx, 0add ecx, 4cmp ecx, 18hjbe B