打狗棒法：TDSD軟體狗 (20千字)
打狗棒法：TDSD軟體狗
軟體名稱：XX行業資訊管理系統V2.3
保護方式：呼叫TDSD.VXD的軟體狗（彩虹）
破解方法：帶狗殺狗
破解工具：TRW2000 V1.23, WDASM 8.93
一、在無狗時執行程式，沒有任何提示自動退出。還是插上狗，在TRW2000下用BPX
DEVICEIOCONTROL攔截，下PMODULE返回主程式領空，我們來看看：
* Referenced by a (U)nconditional
or (C)onditional Jump at Address:
|:005AFE81(U)
|
:005AFE84 391D540B5C00
cmp dword ptr [005C0B54], ebx
:005AFE8A
8B3580125C00 mov esi, dword ptr [005C1280]
:005AFE90 BF84000000 mov
edi, 00000084
:005AFE95 756A
jne 005AFF01
:005AFE97 8D45F4
lea eax, dword ptr [ebp-0C]
:005AFE9A
53
push ebx
:005AFE9B 50
push eax
:005AFE9C 8D458C
lea eax, dword ptr [ebp-74]
:005AFE9F
6A68 push
00000068
:005AFEA1 50
push eax
:005AFEA2 8D8508FFFFFF
lea eax, dword ptr [ebp+FFFFFF08]
:005AFEA8 57
push edi
:005AFEA9 50
push eax
:005AFEAA 6A03
push 00000003
:005AFEAC FF75FC
push [ebp-04]
:005AFEAF FFD6
call esi
-->攔截到的call deviceiocontrol
:005AFEB1 3BC3
cmp eax, ebx
-->返回到這兒了！
:005AFEB3 7507
jne 005AFEBC -->此處有狗無狗都跳，不知為何？
:005AFEB5
C7458C08000000 mov [ebp-74], 00000008
-->此地址存放有狗標誌，
0為有狗，8為無狗
* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:005AFEB3(C)
|
:005AFEBC 395D8C
cmp dword ptr [ebp-74], ebx -->比較是否有狗？
:005AFEBF 741D
je 005AFEDE
-->有狗跳轉
:005AFEC1 EB01
jmp 005AFEC4
:005AFEC3 3D
BYTE 3D
* Referenced
by a (U)nconditional or (C)onditional Jump at Address:
|:005AFEC1(U)
|
:005AFEC4 FF75FC
push [ebp-04]
:005AFEC7 FF1548125C00
call dword ptr [005C1248]
:005AFECD EB01
jmp 005AFED0
:005AFECF 3D
BYTE 3D
* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:005AFECD(U)
|
:005AFED0 FF75F8
push [ebp-08]
:005AFED3 E8D9F7FFFF
call 005AF6B1
:005AFED8 59
pop ecx
:005AFED9
E9F3000000 jmp 005AFFD1
* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:005AFEBF(C)
|
:005AFEDE EB01
jmp 005AFEE1 -->有狗跳到這兒，一直向下走
:005AFEE0 3D
BYTE 3D
* Referenced by a (U)nconditional or (C)onditional
Jump at Address:
|:005AFEDE(U)
|
:005AFEE1 8B4590
mov eax, dword ptr [ebp-70]
:005AFEE4 A3640B5C00 mov
dword ptr [005C0B64], eax
:005AFEE9 EB01
jmp 005AFEEC
:005AFEEB 3D
BYTE 3D
* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:005AFEE9(U)
|
:005AFEEC C605500B5C0001 mov byte
ptr [005C0B50], 01
:005AFEF3 EB01
jmp 005AFEF6
:005AFEF5 3D
BYTE 3D
* Referenced
by a (U)nconditional or (C)onditional Jump at Address:
|:005AFEF3(U)
|
:005AFEF6 8B850CFFFFFF mov eax,
dword ptr [ebp+FFFFFF0C]
:005AFEFC A3540B5C00
mov dword ptr [005C0B54], eax
* Referenced by a
(U)nconditional or (C)onditional Jump at Address:
|:005AFE95(C)
|
:005AFF01 EB01
jmp 005AFF04
:005AFF03 3D
BYTE 3D
* Referenced by a (U)nconditional
or (C)onditional Jump at Address:
|:005AFF01(U)
|
:005AFF04 A0F80B5C00
mov al, byte ptr [005C0BF8]
:005AFF09
50
push eax
:005AFF0A E85BF1FFFF
call 005AF06A
:005AFF0F 59
pop ecx
:005AFF10 898518FFFFFF
mov dword ptr [ebp+FFFFFF18], eax
:005AFF16 EB01
jmp 005AFF19
:005AFF18 3D
BYTE 3D
* Referenced by a (U)nconditional or (C)onditional Jump
at Address:
|:005AFF16(U)
|
:005AFF19 E8E9F0FFFF
call 005AF007
:005AFF1E 0FB7D8
movzx ebx, ax
:005AFF21 E8E1F0FFFF
call 005AF007
:005AFF26 0FB7C0
movzx eax, ax
:005AFF29
C1E010 shl eax,
10
:005AFF2C 0BD8
or ebx, eax
:005AFF2E 899D10FFFFFF
mov dword ptr [ebp+FFFFFF10], ebx
:005AFF34 EB01
jmp 005AFF37
:005AFF36
3D
BYTE 3D
* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:005AFF34(U)
|
:005AFF37 E881F1FFFF
call 005AF0BD
:005AFF3C EB01
jmp 005AFF3F
:005AFF3E 3D
BYTE 3D
* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:005AFF3C(U)
|
:005AFF3F A0FC0B5C00
mov al, byte ptr [005C0BFC]
:005AFF44 50
push eax
:005AFF45
E820F1FFFF call 005AF06A
:005AFF4A 898514FFFFFF mov dword ptr
[ebp+FFFFFF14], eax
:005AFF50 A1640B5C00
mov eax, dword ptr [005C0B64]
:005AFF55 59
pop ecx
:005AFF56
898524FFFFFF mov dword ptr [ebp+FFFFFF24],
eax
:005AFF5C EB01
jmp 005AFF5F
:005AFF5E 3D
BYTE 3D
* Referenced by a
(U)nconditional or (C)onditional Jump at Address:
|:005AFF5C(U)
|
:005AFF5F EB01
jmp 005AFF62
:005AFF61 3D
BYTE 3D
* Referenced by a (U)nconditional
or (C)onditional Jump at Address:
|:005AFF5F(U)
|
:005AFF62 8D45F4
lea eax, dword ptr [ebp-0C]
:005AFF65 6A00
push 00000000
:005AFF67 50
push eax
:005AFF68 8D458C
lea eax, dword ptr [ebp-74]
:005AFF6B 6A68
push 00000068
:005AFF6D 50
push eax
:005AFF6E 8D8508FFFFFF
lea eax, dword ptr [ebp+FFFFFF08]
:005AFF74 57
push edi
:005AFF75 50
push eax
:005AFF76 6A04
push 00000004
:005AFF78 FF75FC
push [ebp-04]
:005AFF7B FFD6
call esi
-->到這兒 call deviceiocontrol
:005AFF7D FF75FC
push [ebp-04] -->從狗內取回第一組數8位元組
:005AFF80
8BF0 mov
esi, eax
:005AFF82 FF1548125C00
call dword ptr [005C1248] -->這兒再次讀狗，
:005AFF88 FF75F8
push [ebp-08]
-->從狗內取出第二組8位元組數
:005AFF8B E821F7FFFF
call 005AF6B1
:005AFF90 59
pop ecx
:005AFF91 EB01
jmp 005AFF94
:005AFF93
3D
BYTE 3D
* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:005AFF91(U)
|
:005AFF94 85F6
test esi, esi
-->此處比較是否有狗
:005AFF96 742F
je 005AFFC7
-->無狗跳轉
:005AFF98 837D8C00
cmp dword ptr [ebp-74], 00000000
-->與5AFEAF處讀狗標誌比較
:005AFF9C 7530
jne 005AFFCE -->再次確認是否有狗，無狗時跳轉
:005AFF9E 33C9
xor ecx, ecx
* Referenced by a (U)nconditional or (C)onditional
Jump at Address:
|:005AFFC3(C)
|
:005AFFA0 EB01
jmp 005AFFA3
:005AFFA2 3D
BYTE 3D
* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:005AFFA0(U)
|
:005AFFA3 8BC1
mov eax, ecx
:005AFFA5 6A04
push 00000004
:005AFFA7
99
cdq
:005AFFA8 5E
pop esi
:005AFFA9 F7FE
idiv esi
:005AFFAB 8A442990
mov al, byte ptr [ecx+ebp-70]
-->第一組數逐位元組與
:005AFFAF 32842A10FFFFFF
xor al, byte ptr [edx+ebp-000000F0] -->第二組數異或
:005AFFB6 8B15F40B5C00
mov edx, dword ptr [005C0BF4]
:005AFFBC
88040A mov byte
ptr [edx+ecx], al -->結果儲存
:005AFFBF
41
inc ecx
:005AFFC0 83F908
cmp ecx, 00000008
:005AFFC3 7CDB
jl 005AFFA0
:005AFFC5
EB07 jmp
005AFFCE
* Referenced by a (U)nconditional or (C)onditional Jump at
Address:
|:005AFF96(C)
|
:005AFFC7 C7458C08000000
mov [ebp-74], 00000008
* Referenced by a (U)nconditional
or (C)onditional Jump at Addresses:
|:005AFF9C(C), :005AFFC5(U)
|
:005AFFCE EB01
jmp 005AFFD1
:005AFFD0 3D
BYTE 3D
* Referenced by a (U)nconditional
or (C)onditional Jump at Addresses:
|:005AFED9(U), :005AFFCE(U)
|
:005AFFD1 8B458C
mov eax, dword ptr [ebp-74] -->此處將狗標誌放入暫存器備用
* Referenced
by a (U)nconditional or (C)onditional Jump at Address:
|:005AFE1E(C)
|
:005AFFD4 5F
pop edi
:005AFFD5 5E
pop esi
:005AFFD6 5B
pop ebx
:005AFFD7
C9
leave
:005AFFD8 C3
ret
二、從上面程式段5AFFD8處返回，跟蹤到以下程式段：
* Referenced
by a (U)nconditional or (C)onditional Jump at Address:
|:005ADB6A(U)
|
:005ADB6D 8D45CC
lea eax, dword ptr [ebp-34]
:005ADB70 A3F40B5C00
mov dword ptr [005C0BF4], eax
:005ADB75 E8A4200000
call 005AFC1E
-->呼叫（一）中的程式段
:005ADB7A 8945C8
mov dword ptr [ebp-38], eax -->返回到這兒！EAX存的是狗標誌
:005ADB7D 8B45CC
mov eax, dword ptr [ebp-34] -->此地址就是（一）中異或結果
:005ADB80 A3EC0B5C00
mov dword ptr [005C0BEC], eax
前4個位元組（19 76 6F FF)
:005ADB85 837DC800
cmp dword ptr [ebp-38], 00000000 -->是否有狗？
:005ADB89
7413 je 005ADB9E
-->有狗就跳轉，程式出現啟動畫面！！！
:005ADB8B C70510005C00E1E75A00
mov dword ptr [005C0010], 005AE7E1
:005ADB95 C745C800000000
mov [ebp-38], 00000000
:005ADB9C EB3C
jmp 005ADBDA
* Referenced
by a (U)nconditional or (C)onditional Jump at Address:
|:005ADB89(C)
|
:005ADB9E 833D74005C0000 cmp dword ptr
[005C0074], 00000000
:005ADBA5 7429
je 005ADBD0
:005ADBA7 A126005C00
mov eax, dword ptr [005C0026]
:005ADBAC
330514005C00 xor eax, dword ptr [005C0014]
:005ADBB2 8945D4
mov dword ptr [ebp-2C], eax
:005ADBB5 8B45D4
mov eax, dword ptr [ebp-2C]
:005ADBB8 3305EC0B5C00
xor eax, dword ptr [005C0BEC]
:005ADBBE
A396025C00 mov dword ptr [005C0296],
eax
:005ADBC3 A12A005C00
mov eax, dword ptr [005C002A]
:005ADBC8 310596025C00
xor dword ptr [005C0296], eax
:005ADBCE EB0A
jmp 005ADBDA
* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:005ADBA5(C)
|
:005ADBD0 A1EC0B5C00
mov eax, dword ptr [005C0BEC]
:005ADBD5 A396025C00
mov dword ptr [005C0296], eax
* Referenced by a
(U)nconditional or (C)onditional Jump at Addresses:
|:005ADB9C(U), :005ADBCE(U)
|
:005ADBDA 8B45C8
mov eax, dword ptr [ebp-38]
:005ADBDD EB00
jmp 005ADBDF
* Referenced
by a (U)nconditional or (C)onditional Jump at Addresses:
|:005ADAA6(U), :005ADB1E(U),
:005ADB45(U), :005ADB68(U), :005ADBDD(U)
|
:005ADBDF 5F
pop edi
:005ADBE0
5E
pop esi
:005ADBE1 5B
pop ebx
:005ADBE2 C9
leave
:005ADBE3 C3
ret
三、程式出現啟動畫面後，又呼叫DEVICEIOCONTROL讀狗、比較、運算，和以上過程一樣，正確修改流程，並置入有效狗的資料後，程式就進入主介面執行了！！
我把程式段貼在下面，就不多敘述了，請各位自己看吧：
* Referenced by a (U)nconditional or (C)onditional
Jump at Address:
|:005AF542(U)
|
:005AF545 0FBF05F80B5C00
movsx eax, word ptr [005C0BF8]
:005AF54C 391D540B5C00
cmp dword ptr [005C0B54], ebx
:005AF552
8B3580125C00 mov esi, dword ptr [005C1280]
:005AF558 894588
mov dword ptr [ebp-78], eax
:005AF55B BF84000000
mov edi, 00000084
:005AF560 756A
jne 005AF5CC
:005AF562 8D45F4
lea eax, dword ptr [ebp-0C]
:005AF565 53
push ebx
:005AF566 50
push eax
:005AF567 8D458C
lea eax, dword ptr [ebp-74]
:005AF56A 6A68
push 00000068
:005AF56C 50
push eax
:005AF56D 8D8504FFFFFF
lea eax, dword ptr [ebp+FFFFFF04]
:005AF573 57
push edi
:005AF574 50
push eax
:005AF575 6A03
push 00000003
:005AF577 FF75FC
push [ebp-04]
:005AF57A FFD6
call esi
:005AF57C
3BC3 cmp
eax, ebx
:005AF57E 7507
jne 005AF587
:005AF580 C7458C08000000
mov [ebp-74], 00000008
* Referenced by a (U)nconditional or (C)onditional
Jump at Address:
|:005AF57E(C)
|
:005AF587 395D8C
cmp dword ptr [ebp-74], ebx
:005AF58A 741D
je 005AF5A9
:005AF58C EB01
jmp 005AF58F
:005AF58E 81
BYTE 81
* Referenced
by a (U)nconditional or (C)onditional Jump at Address:
|:005AF58C(U)
|
:005AF58F FF75FC
push [ebp-04]
:005AF592 FF1548125C00
call dword ptr [005C1248]
:005AF598 EB01
jmp 005AF59B
:005AF59A 81
BYTE 81
* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:005AF598(U)
|
:005AF59B FF75F8
push [ebp-08]
:005AF59E E80E010000
call 005AF6B1
:005AF5A3 59
pop ecx
:005AF5A4
E900010000 jmp 005AF6A9
* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:005AF58A(C)
|
:005AF5A9 EB01
jmp 005AF5AC
:005AF5AB 81
BYTE 81
* Referenced by a
(U)nconditional or (C)onditional Jump at Address:
|:005AF5A9(U)
|
:005AF5AC 8B4590
mov eax, dword ptr [ebp-70]
:005AF5AF A3640B5C00
mov dword ptr [005C0B64], eax
:005AF5B4 EB01
jmp 005AF5B7
:005AF5B6
81
BYTE 81
* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:005AF5B4(U)
|
:005AF5B7 C605500B5C0001
mov byte ptr [005C0B50], 01
:005AF5BE EB01
jmp 005AF5C1
:005AF5C0 81
BYTE 81
* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:005AF5BE(U)
|
:005AF5C1 8B8508FFFFFF
mov eax, dword ptr [ebp+FFFFFF08]
:005AF5C7 A3540B5C00
mov dword ptr [005C0B54], eax
* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:005AF560(C)
|
:005AF5CC EB01
jmp 005AF5CF
:005AF5CE 81
BYTE 81
* Referenced by a
(U)nconditional or (C)onditional Jump at Address:
|:005AF5CC(U)
|
:005AF5CF A0F80B5C00 mov al, byte
ptr [005C0BF8]
:005AF5D4 50
push eax
:005AF5D5 E890FAFFFF
call 005AF06A
:005AF5DA 59
pop ecx
:005AF5DB
898514FFFFFF mov dword ptr [ebp+FFFFFF14],
eax
:005AF5E1 EB01
jmp 005AF5E4
:005AF5E3 81
BYTE 81
* Referenced by a
(U)nconditional or (C)onditional Jump at Address:
|:005AF5E1(U)
|
:005AF5E4 E81EFAFFFF call 005AF007
:005AF5E9 0FB7D8
movzx ebx, ax
:005AF5EC E816FAFFFF
call 005AF007
:005AF5F1 0FB7C0
movzx eax, ax
:005AF5F4 C1E010
shl eax, 10
:005AF5F7 0BD8
or ebx, eax
:005AF5F9
899D0CFFFFFF mov dword ptr [ebp+FFFFFF0C],
ebx
:005AF5FF EB01
jmp 005AF602
:005AF601 81
BYTE 81
*
Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:005AF5FF(U)
|
:005AF602 E8B6FAFFFF
call 005AF0BD
:005AF607 EB01
jmp 005AF60A
:005AF609 81
BYTE 81
* Referenced
by a (U)nconditional or (C)onditional Jump at Address:
|:005AF607(U)
|
:005AF60A A0FC0B5C00 mov
al, byte ptr [005C0BFC]
:005AF60F 50
push eax
:005AF610 E855FAFFFF
call 005AF06A
:005AF615 898510FFFFFF
mov dword ptr [ebp+FFFFFF10], eax
:005AF61B
A1640B5C00 mov eax, dword ptr
[005C0B64]
:005AF620 59
pop ecx
:005AF621 898520FFFFFF
mov dword ptr [ebp+FFFFFF20], eax
:005AF627 EB01
jmp 005AF62A
:005AF629
81
BYTE 81
* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:005AF627(U)
|
:005AF62A EB01
jmp 005AF62D
:005AF62C 81
BYTE 81
* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:005AF62A(U)
|
:005AF62D 8D45F4
lea eax, dword ptr [ebp-0C]
:005AF630 6A00
push 00000000
:005AF632 50
push eax
:005AF633 8D458C
lea eax, dword ptr [ebp-74]
:005AF636 6A68
push 00000068
:005AF638 50
push eax
:005AF639
8D8504FFFFFF lea eax, dword ptr [ebp+FFFFFF04]
:005AF63F 57
push edi
:005AF640 50
push eax
:005AF641 6A01
push 00000001
:005AF643
FF75FC push [ebp-04]
:005AF646 FFD6
call esi
:005AF648 FF75FC
push [ebp-04]
:005AF64B 8BF0
mov esi, eax
:005AF64D FF1548125C00
call dword ptr [005C1248]
:005AF653 FF75F8
push [ebp-08]
:005AF656
E856000000 call 005AF6B1
:005AF65B 59
pop ecx
:005AF65C EB01
jmp 005AF65F
:005AF65E 81
BYTE 81
* Referenced
by a (U)nconditional or (C)onditional Jump at Address:
|:005AF65C(U)
|
:005AF65F 85F6
test esi, esi
:005AF661 743C
je 005AF69F
:005AF663 837D8C00
cmp dword ptr [ebp-74], 00000000
:005AF667
753D jne
005AF6A6
:005AF669 8B7588
mov esi, dword ptr [ebp-78]
:005AF66C 85F6
test esi, esi
:005AF66E
7503 jne
005AF673
:005AF670 6A04
push 00000004
:005AF672 5E
pop esi
* Referenced by a
(U)nconditional or (C)onditional Jump at Address:
|:005AF66E(C)
|
:005AF673 33C9
xor ecx, ecx
:005AF675 85F6
test esi, esi
:005AF677 7E2D
jle 005AF6A6
* Referenced
by a (U)nconditional or (C)onditional Jump at Address:
|:005AF69B(C)
|
:005AF679 EB01
jmp 005AF67C
:005AF67B 81
BYTE 81
* Referenced by a (U)nconditional
or (C)onditional Jump at Address:
|:005AF679(U)
|
:005AF67C 8BC1
mov eax, ecx
:005AF67E 6A04
push 00000004
:005AF680 99
cdq
:005AF681 5F
pop edi
:005AF682 F7FF
idiv edi
:005AF684
8A442990 mov al, byte ptr
[ecx+ebp-70]
:005AF688 32842A0CFFFFFF xor
al, byte ptr [edx+ebp-000000F4]
:005AF68F 8B15F40B5C00
mov edx, dword ptr [005C0BF4]
:005AF695 88040A
mov byte ptr [edx+ecx],
al
:005AF698 41
inc ecx
:005AF699 3BCE
cmp ecx, esi
:005AF69B 7CDC
jl 005AF679
:005AF69D EB07
jmp 005AF6A6
* Referenced by a (U)nconditional or (C)onditional Jump at Address:
|:005AF661(C)
|
:005AF69F C7458C08000000
mov [ebp-74], 00000008
* Referenced by a (U)nconditional or (C)onditional
Jump at Addresses:
|:005AF667(C), :005AF677(C), :005AF69D(U)
|
:005AF6A6 EB01
jmp 005AF6A9
:005AF6A8 81
BYTE 81
* Referenced by a (U)nconditional
or (C)onditional Jump at Addresses:
|:005AF5A4(U), :005AF6A6(U)
|
:005AF6A9 8B458C
mov eax, dword ptr [ebp-74]
* Referenced by a (U)nconditional or (C)onditional
Jump at Address:
|:005AF4DF(C)
|
:005AF6AC 5F
pop edi
:005AF6AD
5E
pop esi
:005AF6AE 5B
pop ebx
:005AF6AF C9
leave
:005AF6B0 C3
ret
四、經過以上跟蹤修改，程式有些功能無效，經跟蹤發現程式中多處有
C7458C08000000 mov [ebp-74], 00000008
這一行，用ULTRAEDIT等工具都修改為C7458C00000000 （即mov [ebp-74], 00000008）後，該軟體完全被破解，所有功能就可使用。
crack123[FCG]
2002.7.2
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