80x86 Assembly / x86 Asm Code Formatting Demo 2

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   ;--- Before Code Formatting ---

   YES  EQU 1
   NO     EQU 0
   SET_BP_CODE EQU 1
   CLEAR_BP_CODE   EQU 2
   Enter_OP_CODE  EQU 3

   .486p
   .xlist
   MASM=1

   include   vmm.inc
   include vwin32.inc
   include  shell.inc
   include    ifsmgr.inc
   include      ifs.inc

   .list

   ; Hook interrupts 30

   VXD_Icode_Seg

   BeginProc TRACKIT_Device_Init

   mov eax, 30h
   mov   esi, OFFSET32 Hookint30
   VMMCall Hook_VMM_Fault

   mov eax, 30h
   mov  esi, OFFSET32 Hookint30
   VMMCall Hook_PM_Fault

   clc
   ret
   EndProc TRACKIT_Device_Init

   VXD_Icode_Ends

   VXD_Locked_Code_Seg

   Declare_Virtual_Device  TRACKIT,0,0,TRACKIT_Control,Undefined_Device_ID, \
   Undefined_Init_Order,,

   ; Device control procedure for the VxD

   BeginProc  TRACKIT_Control

   Control_Dispatch SYS_DYNAMIC_DEVICE_INIT,   TRACKIT_Device_Init
   Control_Dispatch SYS_DYNAMIC_DEVICE_EXIT, TRACKIT_Device_Exit
   Control_Dispatch W32_DEVICEIOCONTROL, TRACKIT_ioctl
   clc
   ret

   TRACKIT_Control  ENDP

   ; Get IOcontrol code

   BeginProc      TRACKIT_ioctl

   mov ecx,[esi].dwIoControlCode
   cmp    ecx,SET_BP_CODE
   jz   Set_bpoint

   cmp   ecx,CLEAR_BP_CODE
   jz  Clear_bpoint

   cmp   ecx,Enter_OP_CODE
   jz Enter_OP

   xor  eax, eax
   clc
   ret
   EndProc   TRACKIT_ioctl

   ; Save the code which will be restored

   BeginProc       Set_bpoint
   pushad

   mov	eax,[esi].lpvInBuffer
   mov   eax,[eax]
   mov  bpoint_addr1,eax
   mov     bx,30cdh
   xchg  bx,[eax]
   mov  hook_api1_code,bx

   mov    eax,[esi].lpvInBuffer
   mov  eax,[eax+4]
   mov     bpoint_addr2,eax
   mov   bx,30cdh
   xchg   bx,[eax]
   mov   hook_api2_code,bx

   mov   eax,[esi].lpvInBuffer
   mov  eax,[eax+8]
   mov bpoint_addr3,eax
   mov   bx,30cdh
   xchg   bx,[eax]
   mov        hook_api3_code,bx

   popad
   xor  eax, eax
   clc
   ret
   EndProc   Set_bpoint

   BeginProc  Clear_bpoint
   pushad

   mov eax,bpoint_addr1
   mov   bx,hook_api1_code
   mov [eax],bx

   mov   eax,bpoint_addr2
   mov  bx,hook_api2_code
   mov  [eax],bx

   mov   eax,bpoint_addr3
   mov bx,hook_api3_code
   mov    [eax],bx

   popad
   xor eax,   eax
   clc
   ret
   EndProc Clear_bpoint

   BeginProc Enter_OP
   pushad

   mov	  eax,  [esi].lpvOutBuffer
   mov	ebx,  enter_eip
   mov    [eax],ebx
   mov [esi].cbOutBuffer,4

   popad
   xor eax,   eax
   clc
   ret
   EndProc  Enter_OP

   ; UnHook all interrupts and services hooked

   BeginProc TRACKIT_Device_Exit

   mov eax,  30h
   mov   esi,   OFFSET32 Hookint30
   VMMCall    UnHook_VMM_Fault
   mov eax, 30h
   mov    esi,   OFFSET32 Hookint30
   VMMCall  UnHook_PM_Fault
   clc
   ret

   EndProc  TRACKIT_Device_Exit

   hook_api1_code    dw   0
   hook_api2_code dw   0
   hook_api3_code      dw   0

   call_ret_code dw 0
   bpoint_addr1 dd    0
   bpoint_addr2    dd 0
   bpoint_addr3     dd 0

   call_inapi   db NO
   enter_eip      dd 0h

   BeginProc Hookint30

   ;int 3

   .if    call_inapi==NO

   pushad

   mov esi,[ebp.Client_EIP]
   sub  esi,2
   mov [ebp.Client_EIP],esi

   mov  esi,[ebp.Client_ESP]
   mov  esi,[esi]
   mov bx,30cdh
   xchg  bx,[esi]
   mov    call_ret_code,bx

   mov eax,bpoint_addr1
   mov       bx,hook_api1_code
   mov  [eax],bx

   mov  eax,bpoint_addr2
   mov bx,hook_api2_code
   mov  [eax],bx

   mov eax,bpoint_addr3
   mov       bx,hook_api3_code
   mov [eax],bx

   mov call_inapi,YES

   popad
   clc
   ret

   .else

   pushad

   mov esi,[ebp.Client_EIP]
   sub    esi,2
   mov  [ebp.Client_EIP],esi
   mov bx,call_ret_code
   mov   [esi],bx


   mov  eax,[esi-27h]
   .if    eax==626610ebh
   mov   enter_eip,esi
   sub     enter_eip,27h
   .endif

   mov  eax,[esi-35h]
   .if    eax==0a302e0c1h
   mov   enter_eip,esi
   sub enter_eip,35h
   sub  enter_eip,5h
   .endif

   mov  eax,[esi-29h]
   .if    eax==0a302e0c1h
   mov   enter_eip,esi
   sub enter_eip,29h
   sub      enter_eip,5h
   .endif

   mov eax,[esi-5Dh]
   .if   eax==0a302e0c1h
   mov  enter_eip,esi
   sub     enter_eip,5Dh
   sub enter_eip,5h
   .endif


   mov eax,[esi-0fh]
   and   eax,00ffffffh
   .if  eax==00e80a6ah
   mov     enter_eip,esi
   sub enter_eip,0fh
   .endif

   mov eax,[esi-8]
   cmp   eax,0e8006a50h
   jnz DELPHI1_END

   mov ax,[esi-0ah]
   .if   ah==0c3h || al==0c3h
   mov  ebx,[ebp.Client_ESP]
   mov ebx,[ebx+4]

   mov   esi,0ah
   sub ebx,esi

   .while  esi !=30h
   mov eax,[ebx]
   .if   eax==83ec8b55h || eax==0b9ec8b55h
   mov  enter_eip,ebx
   .break
   .endif
   inc  esi
   dec    ebx
   .endw
   .endif

   DELPHI1_END:

   mov  eax,[esi-0Fh]
   cmp   eax,0e800408dh
   jnz DELPHI2_END

   mov ax,[esi-11h]
   .if  ah==0c3h || al==0c3h
   mov   ebx,[ebp.Client_ESP]
   mov  ebx,[ebx]

   mov esi,0ah
   sub   ebx,esi

   .while  esi !=30h
   mov  eax,[ebx]
   .if    eax==83ec8b55h
   mov       enter_eip,ebx
   .break
   .endif
   inc  esi
   dec     ebx
   .endw
   .endif
   DELPHI2_END:

   mov  ax,[esi]
   .if    ax==0f08bh
   mov   eax,[esi-0dh]
   .if     eax==83ec8b55h
   mov enter_eip,esi
   sub  enter_eip,0dh
   .endif
   .endif

   mov ax,[esi]
   .if   ax==0f08bh
   mov  eax,[esi-2ch]
   .if eax==6aec8b55h
   mov  enter_eip,esi
   sub   enter_eip,2ch
   .endif
   .endif

   mov   eax,[esi]
   .if  eax==0d48ad233h
   mov eax,[esi-2ch]
   .if    eax==6aec8b55h
   mov enter_eip,esi
   sub  enter_eip,2ch
   .endif
   .endif

   mov al,[esi]
   .if   al==0a3h
   mov  eax,[esi-26h]
   .if eax==6aec8b55h
   mov     enter_eip,esi
   sub enter_eip,26h
   sub   enter_eip,6h
   .endif
   .endif

   mov  ax,[esi]
   .if ax==0e850h
   mov  eax,[esi-150h]
   .if   eax==6aec8b55h
   mov enter_eip,esi
   sub   enter_eip,150h
   .endif
   .endif

   mov ax,[esi]
   .if    ax==0e850h
   mov  eax,[esi-12eh]
   .if eax==6aec8b55h
   mov   enter_eip,esi
   sub enter_eip,12eh
   .endif
   .endif

   mov eax,bpoint_addr1
   mov   bx,30cdh
   xchg bx,[eax]
   mov hook_api1_code,bx

   mov eax,bpoint_addr2
   mov   bx,30cdh
   xchg bx,[eax]
   mov hook_api2_code,bx

   mov  eax,bpoint_addr3
   mov bx,30cdh
   xchg  bx,[eax]
   mov  hook_api3_code,bx


   mov call_inapi,NO

   popad
   clc
   ret
   .endif
   EndProc Hookint30

   VXD_LOCKED_CODE_ENDS

   end

   ;--- After Code Formatting ---

   YES             equ 1
   NO              equ 0
   SET_BP_CODE     equ 1
   CLEAR_BP_CODE   equ 2
   Enter_OP_CODE   equ 3

   .486p
   .xlist
   MASM =1

   include vmm.inc
   include vwin32.inc
   include shell.inc
   include ifsmgr.inc
   include ifs.inc

   .list

   ; Hook interrupts 30

   VXD_Icode_Seg

   BeginProc TRACKIT_Device_Init

       mov     EAX, 30h
       mov     ESI, OFFSET32 Hookint30
       VMMCall Hook_VMM_Fault

       mov     EAX, 30h
       mov     ESI, OFFSET32 Hookint30
       VMMCall Hook_PM_Fault

       clc
       ret
   EndProc TRACKIT_Device_Init

   VXD_Icode_Ends

   VXD_Locked_Code_Seg

   Declare_Virtual_Device TRACKIT, 0, 0, TRACKIT_Control, Undefined_Device_ID, \
   Undefined_Init_Order , ,

   ; Device control procedure for the VxD

   BeginProc TRACKIT_Control

       Control_Dispatch SYS_DYNAMIC_DEVICE_INIT, TRACKIT_Device_Init
       Control_Dispatch SYS_DYNAMIC_DEVICE_EXIT, TRACKIT_Device_Exit
       Control_Dispatch W32_DEVICEIOCONTROL, TRACKIT_ioctl
       clc
       ret

   TRACKIT_Control endp

   ; Get IOcontrol code

   BeginProc TRACKIT_ioctl

       mov ECX, [ESI].dwIoControlCode
       cmp ECX, SET_BP_CODE
       jz  Set_bpoint

       cmp ECX, CLEAR_BP_CODE
       jz  Clear_bpoint

       cmp ECX, Enter_OP_CODE
       jz  Enter_OP

       xor EAX, EAX
       clc
       ret
   EndProc TRACKIT_ioctl

   ; Save the code which will be restored

   BeginProc Set_bpoint
       pushad

       mov    EAX,            [ESI].lpvInBuffer
       mov    EAX,            [EAX]
       mov    bpoint_addr1,   EAX
       mov    BX,             30cdh
       xchg   BX,             [EAX]
       mov    hook_api1_code, BX

       mov    EAX,            [ESI].lpvInBuffer
       mov    EAX,            [EAX+4]
       mov    bpoint_addr2,   EAX
       mov    BX,             30cdh
       xchg   BX,             [EAX]
       mov    hook_api2_code, BX

       mov    EAX,            [ESI].lpvInBuffer
       mov    EAX,            [EAX+8]
       mov    bpoint_addr3,   EAX
       mov    BX,             30cdh
       xchg   BX,             [EAX]
       mov    hook_api3_code, BX

       popad
       xor    EAX, EAX
       clc
       ret
   EndProc Set_bpoint

   BeginProc Clear_bpoint
       pushad

       mov    EAX,   bpoint_addr1
       mov    BX,    hook_api1_code
       mov    [EAX], BX

       mov    EAX,   bpoint_addr2
       mov    BX,    hook_api2_code
       mov    [EAX], BX

       mov    EAX,   bpoint_addr3
       mov    BX,    hook_api3_code
       mov    [EAX], BX

       popad
       xor    EAX,   EAX
       clc
       ret
   EndProc Clear_bpoint


   BeginProc Enter_OP
       pushad

       mov    EAX, [ESI].lpvOutBuffer
       mov    EBX, enter_eip
       mov    [EAX], EBX
       mov    [ESI].cbOutBuffer, 4

       popad
       xor    EAX, EAX
       clc
       ret
   EndProc Enter_OP

   ; UnHook all interrupts and services hooked

   BeginProc TRACKIT_Device_Exit

       mov     EAX, 30h
       mov     ESI, OFFSET32 Hookint30
       VMMCall UnHook_VMM_Fault
       mov     EAX, 30h
       mov     ESI, OFFSET32 Hookint30
       VMMCall UnHook_PM_Fault
       clc
       ret

   EndProc TRACKIT_Device_Exit

   hook_api1_code dw 0
   hook_api2_code dw 0
   hook_api3_code dw 0

   call_ret_code dw 0
   bpoint_addr1 dd 0
   bpoint_addr2 dd 0
   bpoint_addr3 dd 0

   call_inapi db NO
   enter_eip dd 0h

   BeginProc Hookint30

                    ;int 3

                    .if    call_inapi==NO

                           pushad

                           mov    ESI, [EBP.Client_EIP]
                           sub    ESI, 2
                           mov    [EBP.Client_EIP], ESI

                           mov    ESI, [EBP.Client_ESP]
                           mov    ESI, [ESI]
                           mov    BX, 30cdh
                           xchg   BX, [ESI]
                           mov    call_ret_code, BX

                           mov    EAX, bpoint_addr1
                           mov    BX, hook_api1_code
                           mov    [EAX], BX

                           mov    EAX, bpoint_addr2
                           mov    BX, hook_api2_code
                           mov    [EAX], BX

                           mov    EAX, bpoint_addr3
                           mov    BX, hook_api3_code
                           mov    [EAX], BX

                           mov    call_inapi, YES

                           popad
                           clc
                           ret

                    .else

                           pushad

                           mov    ESI, [EBP.Client_EIP]
                           sub    ESI, 2
                           mov    [EBP.Client_EIP], ESI
                           mov    BX,  call_ret_code
                           mov    [ESI], BX


                           mov    EAX, [ESI-27h]
                           .if    EAX==626610ebh
                                  mov  enter_eip, ESI
                                  sub  enter_eip, 27h
                           .endif

                           mov    EAX, [ESI-35h]
                           .if    EAX==0a302e0c1h
                                  mov  enter_eip, ESI
                                  sub  enter_eip, 35h
                                  sub  enter_eip, 5h
                           .endif

                           mov    EAX, [ESI-29h]
                           .if    EAX==0a302e0c1h
                                  mov  enter_eip, ESI
                                  sub  enter_eip, 29h
                                  sub  enter_eip, 5h
                           .endif

                           mov    EAX, [ESI-5Dh]
                           .if    EAX==0a302e0c1h
                                  mov  enter_eip, ESI
                                  sub  enter_eip, 5Dh
                                  sub  enter_eip, 5h
                           .endif


                           mov    EAX, [ESI-0fh]
                           and    EAX, 00ffffffh
                           .if    EAX==00e80a6ah
                                  mov  enter_eip, ESI
                                  sub  enter_eip, 0fh
                           .endif

                           mov    EAX, [ESI-8]
                           cmp    EAX, 0e8006a50h
                           jnz    DELPHI1_END

                           mov    AX, [ESI-0ah]
                           .if    AH==0c3h || AL==0c3h
                                  mov    EBX, [EBP.Client_ESP]
                                  mov    EBX, [EBX+4]

                                  mov    ESI, 0ah
                                  sub    EBX, ESI

                                  .while ESI !=30h
                                         mov    EAX, [EBX]
                                         .if    EAX==83ec8b55h || EAX==0b9ec8b55h
                                                mov  enter_eip, EBX
                                                .break
                                         .endif
                                         inc    ESI
                                         dec    EBX
                                  .endw
                           .endif

   DELPHI1_END:

                           mov    EAX, [ESI-0Fh]
                           cmp    EAX, 0e800408dh
                           jnz    DELPHI2_END

                           mov    AX, [ESI-11h]
                           .if    AH==0c3h || AL==0c3h
                                  mov    EBX, [EBP.Client_ESP]
                                  mov    EBX, [EBX]

                                  mov    ESI, 0ah
                                  sub    EBX, ESI

                                  .while ESI  !=30h
                                         mov  EAX, [EBX]
                                         .if  EAX==83ec8b55h
                                              mov    enter_eip, EBX
                                              .break
                                         .endif
                                         inc    ESI
                                         dec    EBX
                                  .endw
                           .endif
   DELPHI2_END:

                           mov    AX, [ESI]
                           .if    AX==0f08bh
                                  mov    EAX, [ESI-0dh]
                                  .if    EAX==83ec8b55h
                                         mov  enter_eip, ESI
                                         sub  enter_eip, 0dh
                                  .endif
                           .endif

                           mov    AX, [ESI]
                           .if    AX==0f08bh
                                  mov    EAX, [ESI-2ch]
                                  .if    EAX==6aec8b55h
                                         mov  enter_eip, ESI
                                         sub  enter_eip, 2ch
                                  .endif
                           .endif

                           mov    EAX, [ESI]
                           .if    EAX==0d48ad233h
                                  mov    EAX, [ESI-2ch]
                                  .if    EAX==6aec8b55h
                                         mov  enter_eip, ESI
                                         sub  enter_eip, 2ch
                                  .endif
                           .endif

                           mov    AL, [ESI]
                           .if    AL==0a3h
                                  mov    EAX, [ESI-26h]
                                  .if    EAX==6aec8b55h
                                         mov  enter_eip, ESI
                                         sub  enter_eip, 26h
                                         sub  enter_eip, 6h
                                  .endif
                           .endif

                           mov    AX, [ESI]
                           .if    AX==0e850h
                                  mov    EAX, [ESI-150h]
                                  .if    EAX==6aec8b55h
                                         mov  enter_eip, ESI
                                         sub  enter_eip, 150h
                                  .endif
                           .endif

                           mov    AX, [ESI]
                           .if    AX==0e850h
                                  mov    EAX, [ESI-12eh]
                                  .if    EAX==6aec8b55h
                                         mov  enter_eip, ESI
                                         sub  enter_eip, 12eh
                                  .endif
                           .endif

                           mov    EAX, bpoint_addr1
                           mov    BX,  30cdh
                           xchg   BX,  [EAX]
                           mov    hook_api1_code, BX

                           mov    EAX, bpoint_addr2
                           mov    BX,  30cdh
                           xchg   BX,  [EAX]
                           mov    hook_api2_code, BX

                           mov    EAX, bpoint_addr3
                           mov    BX,  30cdh
                           xchg   BX,  [EAX]
                           mov    hook_api3_code, BX


                           mov    call_inapi, NO

                           popad
                           clc
                           ret
                    .endif
   EndProc Hookint30

   VXD_LOCKED_CODE_ENDS

   end

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