新CrackMe160之089 - fornixcrackme1
汇编写的程序，可直接看源码
00401000 >/$ 6A 00 push 0x0 ; /pModule = NULL
00401002 |. E8 01030000 call <jmp.&kernel32.GetModuleHandleA> ; \GetModuleHandleA
00401007 |. A3 9C624000 mov dword ptr ds:[0x40629C],eax
0040100C |. 6A 03 push 0x3 ; /RsrcName = 3.
0040100E |. FF35 9C624000 push dword ptr ds:[0x40629C] ; |hInst = NULL
00401014 |. E8 37030000 call <jmp.&user32.LoadIconA> ; \LoadIconA
00401019 |. A3 A0624000 mov dword ptr ds:[0x4062A0],eax
0040101E |. 56 push esi ; fornixcr.<ModuleEntryPoint>
0040101F |. 6A 0A push 0xA ; /ResourceType = RT_RCDATA
00401021 |. 6A 04 push 0x4 ; |ResourceName = 0x4
00401023 |. FF35 9C624000 push dword ptr ds:[0x40629C] ; |hModule = NULL
00401029 |. E8 D4020000 call <jmp.&kernel32.FindResourceA> ; \FindResourceA
0040102E |. 50 push eax
0040102F |. 50 push eax ; /hResource = 0019FFCC
00401030 |. FF35 9C624000 push dword ptr ds:[0x40629C] ; |hModule = NULL
00401036 |. E8 EB020000 call <jmp.&kernel32.SizeofResource> ; \SizeofResource
0040103B |. A3 A4624000 mov dword ptr ds:[0x4062A4],eax
00401040 |. 58 pop eax ; kernel32.7741FCC9
00401041 |. 50 push eax ; /hResource = 0019FFCC
00401042 |. FF35 9C624000 push dword ptr ds:[0x40629C] ; |hModule = NULL
00401048 |. E8 CD020000 call <jmp.&kernel32.LoadResource> ; \LoadResource
0040104D |. 50 push eax ; /hResource = 0019FFCC
0040104E |. E8 CD020000 call <jmp.&kernel32.LockResource> ; \LockResource
00401053 |. 8BF0 mov esi,eax
00401055 |. A1 A4624000 mov eax,dword ptr ds:[0x4062A4]
0040105A |. 83C0 04 add eax,0x4
0040105D |. 50 push eax ; /MemSize = 19FFCC (1703884.)
0040105E |. 6A 40 push 0x40 ; |Flags = GPTR
00401060 |. E8 AF020000 call <jmp.&kernel32.GlobalAlloc> ; \GlobalAlloc
00401065 |. A3 A8624000 mov dword ptr ds:[0x4062A8],eax
0040106A |. 8B0D A4624000 mov ecx,dword ptr ds:[0x4062A4]
00401070 |. 8908 mov dword ptr ds:[eax],ecx ; fornixcr.<ModuleEntryPoint>
00401072 |. 83C0 04 add eax,0x4
00401075 |. 8BF8 mov edi,eax
00401077 |. F3:A4 rep movs byte ptr es:[edi],byte ptr ds:>
00401079 |. 5E pop esi ; kernel32.7741FCC9
0040107A |. 6A 00 push 0x0 ; /lParam = NULL
0040107C |. 68 96104000 push fornixcr.00401096 ; |DlgProc = fornixcr.00401096
00401081 |. 6A 00 push 0x0 ; |hOwner = NULL
00401083 |. 6A 66 push 0x66 ; |pTemplate = 0x66
00401085 |. FF35 9C624000 push dword ptr ds:[0x40629C] ; |hInst = NULL
0040108B |. E8 AE020000 call <jmp.&user32.DialogBoxParamA> ; \DialogBoxParamA
00401090 |. 50 push eax ; /ExitCode = 0x19FFCC
00401091 \. E8 66020000 call <jmp.&kernel32.ExitProcess> ; \ExitProcess
00401096 /. 55 push ebp
00401097 |. 8BEC mov ebp,esp
00401099 |. 817D 0C 10010>cmp [arg.2],0x110
004010A0 |. 75 76 jnz short fornixcr.00401118
004010A2 |. FF35 A0624000 push dword ptr ds:[0x4062A0] ; /lParam = 0x0
004010A8 |. 6A 01 push 0x1 ; |wParam = 0x1
004010AA |. 68 80000000 push 0x80 ; |Message = WM_SETICON
004010AF |. FF75 08 push [arg.1] ; |hWnd = 0x25C000
004010B2 |. E8 AB020000 call <jmp.&user32.SendMessageA> ; \SendMessageA
004010B7 |. 6A 00 push 0x0 ; /lParam = 0x0
004010B9 |. 6A 13 push 0x13 ; |wParam = 0x13
004010BB |. 68 C5000000 push 0xC5 ; |Message = EM_LIMITTEXT
004010C0 |. 6A 64 push 0x64 ; |ControlID = 64 (100.)
004010C2 |. FF75 08 push [arg.1] ; |hWnd = 0025C000
004010C5 |. E8 92020000 call <jmp.&user32.SendDlgItemMessageA> ; \SendDlgItemMessageA
004010CA |. 6A 00 push 0x0 ; /lParam = 0x0
004010CC |. 6A 13 push 0x13 ; |wParam = 0x13
004010CE |. 68 C5000000 push 0xC5 ; |Message = EM_LIMITTEXT
004010D3 |. 6A 65 push 0x65 ; |ControlID = 65 (101.)
004010D5 |. FF75 08 push [arg.1] ; |hWnd = 0025C000
004010D8 |. E8 7F020000 call <jmp.&user32.SendDlgItemMessageA> ; \SendDlgItemMessageA
004010DD |. 68 14604000 push fornixcr.00406014 ; /Enter_Serial_Here
004010E2 |. 6A 65 push 0x65 ; |ControlID = 65 (101.)
004010E4 |. FF75 08 push [arg.1] ; |hWnd = 0025C000
004010E7 |. E8 7C020000 call <jmp.&user32.SetDlgItemTextA> ; \SetDlgItemTextA
004010EC |. FF35 A8624000 push dword ptr ds:[0x4062A8]
004010F2 |. E8 BA020000 call fornixcr.004013B1
004010F7 |. 68 04604000 push fornixcr.00406004 ; /Enter_Name_Here
004010FC |. 6A 64 push 0x64 ; |ControlID = 64 (100.)
004010FE |. FF75 08 push [arg.1] ; |hWnd = 0025C000
00401101 |. E8 62020000 call <jmp.&user32.SetDlgItemTextA> ; \SetDlgItemTextA
00401106 |. 6A 64 push 0x64 ; /ControlID = 64 (100.)
00401108 |. FF75 08 push [arg.1] ; |hWnd = 0025C000
0040110B |. E8 3A020000 call <jmp.&user32.GetDlgItem> ; \GetDlgItem
00401110 |. 50 push eax ; /hWnd = 0019FFCC
00401111 |. E8 58020000 call <jmp.&user32.SetFocus> ; \SetFocus
00401116 |. EB 5A jmp short fornixcr.00401172
00401118 |> 817D 0C 11010>cmp [arg.2],0x111
0040111F |. 75 2F jnz short fornixcr.00401150
00401121 |. 817D 10 EA030>cmp [arg.3],0x3EA
00401128 |. 75 0A jnz short fornixcr.00401134
0040112A |. FF75 08 push [arg.1]
0040112D |. E8 49000000 call fornixcr.0040117B
00401132 |. EB 3E jmp short fornixcr.00401172
00401134 |> 837D 10 67 cmp [arg.3],0x67
00401138 |. 75 38 jnz short fornixcr.00401172
0040113A |. 6A 00 push 0x0 ; /Style = MB_OK|MB_APPLMODAL
0040113C |. 68 D7614000 push fornixcr.004061D7 ; |ABOUT CRACKME 1
00401141 |. 68 87604000 push fornixcr.00406087 ; |Fornix's First CrackMe\n\rRulez\n\rMake a keygen. No patching\n\rClues:\n\rSerial is machine dependent\n\r\n\rMail queries, criticisms, suggestions,etc at fornix@fusionrulez.cjb.net\n\rWrite a tutorial on keygenning this and it will be put up at fusion's
00401146 |. FF75 08 push [arg.1] ; |hOwner = 0025C000
00401149 |. E8 08020000 call <jmp.&user32.MessageBoxA> ; \MessageBoxA
0040114E |. EB 22 jmp short fornixcr.00401172
00401150 |> 837D 0C 10 cmp [arg.2],0x10
00401154 |. 75 13 jnz short fornixcr.00401169
00401156 |. 6A 00 push 0x0 ; /Result = 0x0
00401158 |. FF75 08 push [arg.1] ; |hWnd = 0025C000
0040115B |. E8 E4010000 call <jmp.&user32.EndDialog> ; \EndDialog
00401160 |. 6A 00 push 0x0
00401162 |. E8 4A020000 call fornixcr.004013B1
00401167 |. EB 09 jmp short fornixcr.00401172
00401169 |> B8 00000000 mov eax,0x0
0040116E |. C9 leave
0040116F |. C2 1000 retn 0x10
00401172 |> B8 01000000 mov eax,0x1
00401177 |. C9 leave
00401178 \. C2 1000 retn 0x10
0040117B /$ 55 push ebp
0040117C |. 8BEC mov ebp,esp
0040117E |. 83C4 FC add esp,-0x4
00401181 |. 60 pushad
00401182 |. B8 74624000 mov eax,fornixcr.00406274
00401187 |. 50 push eax ; /lParam = 0x19FFCC
00401188 |. 6A 14 push 0x14 ; |wParam = 0x14
0040118A |. 6A 0D push 0xD ; |Message = WM_GETTEXT
0040118C |. 6A 64 push 0x64 ; |ControlID = 64 (100.)
0040118E |. FF75 08 push [arg.1] ; |hWnd = 0025C000
00401191 |. E8 C6010000 call <jmp.&user32.SendDlgItemMessageA> ; \SendDlgItemMessageA
00401196 |. B8 88624000 mov eax,fornixcr.00406288
0040119B |. 50 push eax ; /lParam = 0x19FFCC
0040119C |. 6A 0A push 0xA ; |wParam = 0xA
0040119E |. 6A 0D push 0xD ; |Message = WM_GETTEXT
004011A0 |. 6A 65 push 0x65 ; |ControlID = 65 (101.)
004011A2 |. FF75 08 push [arg.1] ; |hWnd = 0025C000
004011A5 |. E8 B2010000 call <jmp.&user32.SendDlgItemMessageA> ; \SendDlgItemMessageA
004011AA |. 68 74624000 push fornixcr.00406274 ; /String = ""
004011AF |. E8 84010000 call <jmp.&kernel32.lstrlenA> ; \lstrlenA
004011B4 |. 8945 FC mov [local.1],eax
004011B7 |. 83F8 04 cmp eax,0x4
004011BA |. 77 19 ja short fornixcr.004011D5
004011BC |. 6A 10 push 0x10 ; /Style = MB_OK|MB_ICONHAND|MB_APPLMODAL
004011BE |. 68 53604000 push fornixcr.00406053 ; |Fornix's first Crackme
004011C3 |. 68 26604000 push fornixcr.00406026 ; |The name should be atleast 4 characters long
004011C8 |. FF75 08 push [arg.1] ; |hOwner = 0025C000
004011CB |. E8 86010000 call <jmp.&user32.MessageBoxA> ; \MessageBoxA
004011D0 |. 61 popad
004011D1 |. C9 leave
004011D2 |. C2 0400 retn 0x4
004011D5 |> 6A 00 push 0x0 ; /pFileSystemNameSize = NULL
004011D7 |. 6A 00 push 0x0 ; |pFileSystemNameBuffer = NULL
004011D9 |. 6A 00 push 0x0 ; |pFileSystemFlags = NULL
004011DB |. 6A 00 push 0x0 ; |pMaxFilenameLength = NULL
004011DD |. 6A 00 push 0x0 ; |pVolumeSerialNumber = NULL
004011DF |. 6A 14 push 0x14 ; |MaxVolumeNameSize = 14 (20.)
004011E1 |. 68 AC624000 push fornixcr.004062AC ; |VolumeNameBuffer = fornixcr.004062AC
004011E6 |. 68 00604000 push fornixcr.00406000 ; |C:\
004011EB |. E8 1E010000 call <jmp.&kernel32.GetVolumeInformatio>; \GetVolumeInformationA
004011F0 |. 68 AC624000 push fornixcr.004062AC ; /String2 = ""
004011F5 |. 68 E8624000 push fornixcr.004062E8 ; |String1 = fornixcr.004062E8
004011FA |. E8 33010000 call <jmp.&kernel32.lstrcpyA> ; \lstrcpyA
004011FF |. 68 74624000 push fornixcr.00406274 ; /StringToAdd = ""
00401204 |. 68 E8624000 push fornixcr.004062E8 ; |ConcatString = ""
00401209 |. E8 1E010000 call <jmp.&kernel32.lstrcatA> ; \lstrcatA
0040120E |. E8 40000000 call fornixcr.00401253
00401213 |. E8 6B000000 call fornixcr.00401283
00401218 |. E8 99000000 call fornixcr.004012B6
0040121D |. 85C0 test eax,eax
0040121F |. 75 19 jnz short fornixcr.0040123A
00401221 |. B8 6A604000 mov eax,fornixcr.0040606A ; More Work To Do
00401226 |. 50 push eax ; /lParam = 0x19FFCC
00401227 |. 6A 00 push 0x0 ; |wParam = 0x0
00401229 |. 6A 0C push 0xC ; |Message = WM_SETTEXT
0040122B |. 6A 65 push 0x65 ; |ControlID = 65 (101.)
0040122D |. FF75 08 push [arg.1] ; |hWnd = 0025C000
00401230 |. E8 27010000 call <jmp.&user32.SendDlgItemMessageA> ; \SendDlgItemMessageA
00401235 |. 61 popad
00401236 |. C9 leave
00401237 |. C2 0400 retn 0x4
0040123A |> B8 7A604000 mov eax,fornixcr.0040607A ; Good Cracker
0040123F |. 50 push eax ; /lParam = 0x19FFCC
00401240 |. 6A 00 push 0x0 ; |wParam = 0x0
00401242 |. 6A 0C push 0xC ; |Message = WM_SETTEXT
00401244 |. 6A 65 push 0x65 ; |ControlID = 65 (101.)
00401246 |. FF75 08 push [arg.1] ; |hWnd = 0025C000
00401249 |. E8 0E010000 call <jmp.&user32.SendDlgItemMessageA> ; \SendDlgItemMessageA
0040124E |. 61 popad
0040124F |. C9 leave
00401250 \. C2 0400 retn 0x4
00401253 /$ BE E8624000 mov esi,fornixcr.004062E8
00401258 |. BF C0624000 mov edi,fornixcr.004062C0
0040125D |. BA 74624000 mov edx,fornixcr.00406274
00401262 |. B9 04000000 mov ecx,0x4
00401267 |> 85C9 /test ecx,ecx ; fornixcr.<ModuleEntryPoint>
00401269 |. 74 14 |je short fornixcr.0040127F
0040126B |. 8A06 |mov al,byte ptr ds:[esi]
0040126D |. 8A22 |mov ah,byte ptr ds:[edx]
0040126F |. 32C4 |xor al,ah
00401271 |. 24 5F |and al,0x5F
00401273 |. 0C 40 |or al,0x40
00401275 |. 34 09 |xor al,0x9
00401277 |. 8807 |mov byte ptr ds:[edi],al
00401279 |. 46 |inc esi ; fornixcr.<ModuleEntryPoint>
0040127A |. 47 |inc edi ; fornixcr.<ModuleEntryPoint>
0040127B |. 49 |dec ecx ; fornixcr.<ModuleEntryPoint>
0040127C |. 42 |inc edx ; fornixcr.<ModuleEntryPoint>
0040127D |.^ EB E8 \jmp short fornixcr.00401267
0040127F |> C607 24 mov byte ptr ds:[edi],0x24
00401282 \. C3 retn
00401283 /$ BE 74624000 mov esi,fornixcr.00406274
00401288 |. BF C0624000 mov edi,fornixcr.004062C0
0040128D |. BA E8624000 mov edx,fornixcr.004062E8
00401292 |. 83C7 05 add edi,0x5
00401295 |. B9 04000000 mov ecx,0x4
0040129A |> 85C9 /test ecx,ecx ; fornixcr.<ModuleEntryPoint>
0040129C |. 74 14 |je short fornixcr.004012B2
0040129E |. 8A06 |mov al,byte ptr ds:[esi]
004012A0 |. 8A22 |mov ah,byte ptr ds:[edx]
004012A2 |. 32C4 |xor al,ah
004012A4 |. 24 3F |and al,0x3F
004012A6 |. 0C 30 |or al,0x30
004012A8 |. 34 09 |xor al,0x9
004012AA |. 8807 |mov byte ptr ds:[edi],al
004012AC |. 46 |inc esi ; fornixcr.<ModuleEntryPoint>
004012AD |. 47 |inc edi ; fornixcr.<ModuleEntryPoint>
004012AE |. 49 |dec ecx ; fornixcr.<ModuleEntryPoint>
004012AF |. 42 |inc edx ; fornixcr.<ModuleEntryPoint>
004012B0 |.^ EB E8 \jmp short fornixcr.0040129A
004012B2 |> C607 00 mov byte ptr ds:[edi],0x0
004012B5 \. C3 retn
004012B6 /$ BE 88624000 mov esi,fornixcr.00406288
004012BB |. BF C0624000 mov edi,fornixcr.004062C0
004012C0 |. BA 92624000 mov edx,fornixcr.00406292
004012C5 |. 56 push esi ; fornixcr.<ModuleEntryPoint>
004012C6 |. 52 push edx ; fornixcr.<ModuleEntryPoint>
004012C7 |. EB 08 jmp short fornixcr.004012D1
004012C9 |> 8A06 /mov al,byte ptr ds:[esi]
004012CB |. 34 09 |xor al,0x9
004012CD |. 8802 |mov byte ptr ds:[edx],al
004012CF |. 46 |inc esi ; fornixcr.<ModuleEntryPoint>
004012D0 |. 42 |inc edx ; fornixcr.<ModuleEntryPoint>
004012D1 |> 803E 00 cmp byte ptr ds:[esi],0x0
004012D4 |.^ 75 F3 \jnz short fornixcr.004012C9
004012D6 |. 5A pop edx ; kernel32.7741FCC9
004012D7 |. 5E pop esi ; kernel32.7741FCC9
004012D8 |> 803F 00 /cmp byte ptr ds:[edi],0x0
004012DB |. 75 07 |jnz short fornixcr.004012E4
004012DD |. 803A 00 |cmp byte ptr ds:[edx],0x0
004012E0 |. 75 02 |jnz short fornixcr.004012E4
004012E2 |. EB 12 |jmp short fornixcr.004012F6
004012E4 |> 8A27 |mov ah,byte ptr ds:[edi]
004012E6 |. 8A02 |mov al,byte ptr ds:[edx]
004012E8 |. 38E0 |cmp al,ah
004012EA |. 75 04 |jnz short fornixcr.004012F0
004012EC |. 47 |inc edi ; fornixcr.<ModuleEntryPoint>
004012ED |. 42 |inc edx ; fornixcr.<ModuleEntryPoint>
004012EE |.^ EB E8 \jmp short fornixcr.004012D8
004012F0 |> B8 00000000 mov eax,0x0
004012F5 |. C3 retn
004012F6 |> B8 01000000 mov eax,0x1
004012FB \. C3 retn
004012FC .- FF25 00504000 jmp dword ptr ds:[<&kernel32.ExitProces>; kernel32.ExitProcess
00401302 $- FF25 04504000 jmp dword ptr ds:[<&kernel32.FindResour>; kernel32.FindResourceA
00401308 $- FF25 08504000 jmp dword ptr ds:[<&kernel32.GetModuleH>; kernel32.GetModuleHandleA
0040130E $- FF25 0C504000 jmp dword ptr ds:[<&kernel32.GetVolumeI>; kernel32.GetVolumeInformationA
00401314 $- FF25 10504000 jmp dword ptr ds:[<&kernel32.GlobalAllo>; kernel32.GlobalAlloc
0040131A $- FF25 14504000 jmp dword ptr ds:[<&kernel32.LoadResour>; kernel32.LoadResource
00401320 $- FF25 18504000 jmp dword ptr ds:[<&kernel32.LockResour>; kernel32.LockResource
00401326 $- FF25 1C504000 jmp dword ptr ds:[<&kernel32.SizeofReso>; kernel32.SizeofResource
0040132C $- FF25 20504000 jmp dword ptr ds:[<&kernel32.lstrcatA>] ; kernel32.lstrcatA
00401332 $- FF25 24504000 jmp dword ptr ds:[<&kernel32.lstrcpyA>] ; kernel32.lstrcpyA
00401338 $- FF25 28504000 jmp dword ptr ds:[<&kernel32.lstrlenA>] ; kernel32.lstrlenA
0040133E $- FF25 6C504000 jmp dword ptr ds:[<&user32.DialogBoxPar>; user32.DialogBoxParamA
00401344 $- FF25 68504000 jmp dword ptr ds:[<&user32.EndDialog>] ; user32.EndDialog
0040134A $- FF25 64504000 jmp dword ptr ds:[<&user32.GetDlgItem>] ; user32.GetDlgItem
00401350 $- FF25 60504000 jmp dword ptr ds:[<&user32.LoadIconA>] ; user32.LoadIconA
00401356 $- FF25 70504000 jmp dword ptr ds:[<&user32.MessageBoxA>>; user32.MessageBoxA
0040135C $- FF25 5C504000 jmp dword ptr ds:[<&user32.SendDlgItemM>; user32.SendDlgItemMessageA
00401362 $- FF25 58504000 jmp dword ptr ds:[<&user32.SendMessageA>; user32.SendMessageA
00401368 $- FF25 54504000 jmp dword ptr ds:[<&user32.SetDlgItemTe>; user32.SetDlgItemTextA
0040136E $- FF25 50504000 jmp dword ptr ds:[<&user32.SetFocus>] ; user32.SetFocus
后面还有一堆代码，看着没什么用先不管，只先看这些
从上面的代码很容易找到关键算法为：
0040120E |. E8 40000000 call fornixcr.00401253
00401213 |. E8 6B000000 call fornixcr.00401283
00401218 |. E8 99000000 call fornixcr.004012B6
这三个方法
1). 00401253 用户名前4位运算得到4位结果再补一个$
2). 00401283 用户名前4位运算得到4位结果再补一个\0,与上面合起来得到9位字符串 "IIII$9999" 其实是固定串，跟用户名没关系
3). 004012B6 注册码循环运算得到9位结果与上面9位对比 code[i] ^ 0x9 = "IIII$9999"[i]
可见注册码也是固定的，即： @@@@-0000
示例：
用户名：任意 （4位以上）
注册码：@@@@-0000 （9位以后可任意）
后记:
因为我电脑C盘没有重命名盘符,即为默认的"本地磁盘", 所以获取到的盘符结果为空, 这里用户名不管输入什么,结果都是@@@@-0000这个,相当于固定了,
但如果你们的C盘不叫"本地磁盘"那结果就可能跟用户有关了(盘符名称少于4位就有关), 下面是注册机:
#include <stdio.h>
#include <string.h>
#include <windows.h>
int main() {
char user[51] = { 0 }, user1[51] = { 0 }, rlt[10] = { 0 };
printf("用户名: ");
fgets(user, sizeof(user), stdin);
int i, j = 0, len = strlen(user) - 1;
if (len <= 4) {
printf("The name should be atleast 4 characters long");
getchar();
return 0;
}
char rootPath[] = "C:\\";
// 定义缓冲区来存储卷标和文件系统名称
char volumeName[MAX_PATH];
char fileSystemName[MAX_PATH];
// 定义变量来存储卷序列号、最大文件名组件长度和文件系统标志
DWORD volumeSerialNumber;
DWORD maximumComponentLength;
DWORD fileSystemFlags;
// 调用 GetVolumeInformationA 函数
GetVolumeInformationA(rootPath, volumeName, MAX_PATH, &volumeSerialNumber, &maximumComponentLength, &fileSystemFlags, fileSystemName, MAX_PATH);
sprintf(user1, "%s%s", volumeName, user);
for (i = 0; i < 4; i++) {
rlt[j++] = (((user1[i] ^ user[i]) & 0x5F) | 0x40) ^ 0x9;
}
rlt[j++] = 0x24;
for (i = 0; i < 4; i++) {
rlt[j++] = (((user1[i] ^ user[i]) & 0x3F) | 0x30) ^ 0x9;
}
for (i = 0; i < 9; i++) {
rlt[i] ^= 0x9;
}
printf("注册码: %s\r\n", rlt);
getchar();
return 0;
}
使用的工具连接(工具有点多有点大,可以先下OD,其它的后面慢慢下) 点击前往下载
下面是我的OD的界面布局,我觉得这4个是最常用的界面,其它的我基本上没用到~
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