ollydbg万能断点！

逆向过程
1.检查了一下,该程序无壳,C++编译,用W32DSM反汇编一堆乱码,我倒!那就动态调试吧!用od载入程序,这次告诉你们如何用OD下万能断点,过程我尽可能详细一点,下面请看.载入程序选OD菜单栏上的插件-----命令行(快捷键是ALT+F1),
在弹出的窗口中输入万能断点命令:bpx hmemcpy,按ENTER键,结果又出现一个对话框:
Intermodular calls
00401164 CALL DWORD PTR DS:[<&USER32.GetWindowRect>] USER32.GetWindowRect
0040118F CALL DWORD PTR DS:[<&USER32.GetClientRect>] USER32.GetClientRect
00401279 CALL DWORD PTR DS:[<&USER32.GetClientRect>] USER32.GetClientRect
004013E1 CALL DWORD PTR DS:[<&USER32.GetClientRect>] USER32.GetClientRect
0040190A CALL DWORD PTR DS:[<&KERNEL32.GetThreadLocale>] kernel32.GetThreadLocale
0040191C CALL DWORD PTR DS:[<&KERNEL32.GetLocaleInfoA>] kernel32.GetLocaleInfoA
还有很多,我就省略了,在这个框里右键单击,出现一个对话框,选中在每个命令中设置断点(热键是S),单击,你看每一行
都变成了红色吧,这表示全部设下断点了,后面的过程很烦燥,你要一边按F9,边按F2把一些无用的断点去掉,有一点耐心吧,
当然也可以不这样做,但遇到断点跳不过的时候,你就得按F2把这个断点去掉.
感觉在这一点上OD比不上TRW和SICE,到出现注册信息框后,你要输入注册信息,然后按确定,程序被断下来,我的序列号是:
GK342QZ0C6RE03L,我输入试验码:123456789098765.程序中断在下面:

00471F71 CALL DWORD PTR DS:[<&USER32.GetWindowTex>****按确定后回到OD程序中断在此,按F8走,在此还没有到关键处!
*****************************************************注意这里会循环两次,分别处理序列号和试验码,按F8走
00471F77 LEA ECX,DWORD PTR DS:[EAX+1]
00471F7A PUSH ECX
00471F7B MOV ECX,DWORD PTR SS:[EBP+10]
00471F7E PUSH EAX
00471F7F CALL SuperPIM.0043E15D
00471F84 PUSH EAX
00471F85 PUSH ESI
00471F86 CALL DWORD PTR DS:[<&USER32.GetWindowTex>
00471F8C MOV ECX,DWORD PTR SS:[EBP+10]
00471F8F PUSH -1
00471F91 CALL SuperPIM.00401D6A
00471F96 JMP SHORT SuperPIM.00471FA3
00471F98 MOV EAX,DWORD PTR SS:[EBP+10]
00471F9B PUSH DWORD PTR DS:[EAX]
00471F9D PUSH ESI
00471F9E CALL SuperPIM.00470B61
00471FA4 POP ESI
00471FA5 POP EBP
00471FA6 RETN 0C*************************************程序第二次循环后最后会返回到0040FE99下面看代码:
----------------------------------------------------------------------------------------------------------
0040FE99 LEA EAX,DWORD PTR SS:[EBP-14]****第二次循环后会返回到这里,注意这就是我们要找的关键地方,按F8往下!
0040FE9C PUSH EAX
0040FE9D CALL SuperPIM.00433D92***********这就是关键CALL,按F7追进,一定要进,因为算法就在这里面!
0040FEA2 POP ECX
0040FEA3 AND DWORD PTR SS:[EBP-4],0
0040FEA7 LEA ESI,DWORD PTR DS:[EDI+74]
0040FEAA MOV EAX,DWORD PTR DS:[ESI]******试验码入EAX
0040FEAC CMP DWORD PTR DS:[EAX-C],0******比较试验码输入了吗?
0040FEB0 JE SHORT SuperPIM.0040FF2F******没有输入就跳走,一跳就失败!
0040FEB2 PUSH 28
0040FEB4 LEA EAX,DWORD PTR SS:[EBP-18]
0040FEB7 PUSH ESI
0040FEB8 PUSH EAX
0040FEB9 CALL SuperPIM.0042CEC8**********此CALL对输入的注册码进行处理,得到一个40位的长字符串,有兴趣自己跟,
******************************************我已是头晕的很,不想跟进!
0040FEBE LEA ECX,DWORD PTR SS:[EBP-14]
0040FEC1 PUSH ECX
0040FEC2 PUSH EAX
0040FEC3 CALL SuperPIM.0040F9B7**********此CALL对序列号处理,也是得到一个40位的长字符串
0040FEC8 MOV ECX,DWORD PTR SS:[EBP-18]
0040FECB ADD ESP,14
0040FECE ADD ECX,-10
0040FED1 MOV BYTE PTR SS:[EBP-D],AL
0040FED4 CALL SuperPIM.00401B5D**********此CALL进行比较,注册码不对,值为0
0040FED9 CMP BYTE PTR SS:[EBP-D],0*******比较是0吗?
0040FEDD JE SHORT SuperPIM.0040FF2F******相等就跳,跳就失败,所以一定不能跳!
0040FEDF PUSH 0**************************不跳往下你就成功了!下面代码省略!
...............................................................省略若干代码!.........................
=============================================================================================================
************************************关键CALL的代码!*******************************************************

00433D92 MOV EAX, SuperPIM.0049844E****追进关键CALL后我们来到这里!
00433D97 CALL SuperPIM.00450900
00433D9C PUSH ECX
00433D9D PUSH ECX
00433D9E AND [LOCAL.5], 0
00433DA2 LEA EAX, [LOCAL.5]
00433DA5 PUSH EAX
00433DA6 CALL SuperPIM.00433CA9********此CALL根据电脑硬件信息得到你的序列号,有兴趣跟吧!我是没有兴趣!
00433DAB AND [LOCAL.1], 0
00433DAF PUSH 14
00433DB1 LEA EAX, [LOCAL.5]
00433DB4 PUSH EAX
00433DB5 LEA EAX, [LOCAL.4]
00433DB8 PUSH EAX
00433DB9 CALL SuperPIM.0042CEC8*******算法CALL(1),按F7跟进!
00433DBE PUSH 28
00433DC0 LEA EAX, [LOCAL.4]
00433DC3 PUSH EAX
00433DC4 PUSH [ARG.1]
00433DC7 MOV BYTE PTR SS:[EBP-4], 1
00433DCB CALL SuperPIM.0042CEC8
00433DD0 MOV ECX, [LOCAL.4]
00433DD3 ADD ESP, 1C
00433DD6 ADD ECX, -10
*****************************省略N行代码!********************************************************
0043454B RETN
===========================================================================================================
***********************************算法CALL!*********************************************************

0042CEC8 MOV EAX, SuperPIM.00497B52********追进算法CALL我们在这里!
0042CECD CALL SuperPIM.00450900
0042CED2 SUB ESP, 14
0042CED5 PUSH EBX
0042CED6 PUSH ESI
0042CED7 XOR EBX, EBX
0042CED9 PUSH EDI
0042CEDA MOV [LOCAL.8], EBX
0042CEDD CALL SuperPIM.004639B5
0042CEE2 MOV EDX, DWORD PTR DS:[EAX]
0042CEE4 MOV ECX, EAX
0042CEE6 CALL DWORD PTR DS:[EDX+C]
0042CEE9 LEA EDI, DWORD PTR DS:[EAX+10]
0042CEEC MOV [LOCAL.4], EDI
0042CEEF MOV EAX, [ARG.2]
0042CEF2 MOV EAX, DWORD PTR DS:[EAX]*******序列号:GK342QZ0C6RE03L移入EAX
0042CEF4 MOV ESI, DWORD PTR DS:[EAX-C]*****序列号的位数15(十六进制值是F)送入ESI
0042CEF7 CMP ESI, EBX**********************比较ESI和EBX,ESI的值是F即序列号位数,EBX的初始值是0
0042CEF9 MOV [LOCAL.1], EBX
0042CEFC MOV [LOCAL.8], ESI
0042CEFF JE SuperPIM.0042CFB2*************相等就跳,这里当然不相等,所以就不会跳!
0042CF05 MOV EAX, [ARG.3]******************常数14(十进制值是20)送入EAX
0042CF08 CMP EAX, ESI**********************比较EAX和ESI,即14和F比较!
0042CF0A MOV [LOCAL.6], EAX
0042CF0D JG SHORT SuperPIM.0042CF12*******大于就跳!
0042CF0F MOV [LOCAL.6], ESI
0042CF12 CMP [LOCAL.6], EBX****************跳到这里!比较14和0
0042CF15 JLE SuperPIM.0042CFB2*************小于就跳,这里当然不会小!所以不跳!
0042CF1B MOV EAX, EBX**********************0移入EAX
0042CF1D CDQ***********************************EDX清0,准备计算!
0042CF1E IDIV ESI***************************除,EAX/ESI ,EAX的值是0,ESI的值存放序列号的位数F
0042CF20 MOV EAX, [ARG.2]******************赋EAX地址值
0042CF23 MOV EAX, DWORD PTR DS:[EAX]*******序列号:GK342QZ0C6RE03L移入EAX
0042CF25 PUSH EBX***************************EBX入栈
0042CF26 MOV AL, BYTE PTR DS:[EDX+EAX]*****序列号的第一位G(ASCII码值47)入AL
0042CF29 MOV BYTE PTR SS:[EBP-1C], AL******保存值47
0042CF2C PUSH [LOCAL.7]
0042CF2F CALL SuperPIM.0042CD8E*************算法CALL(2),按F7跟进!代码直接在下面给出
==============================================================================================================
***************************算法CALL(2)*****************************************************

0042CD8E PUSH EBP
0042CD8F MOV EBP, ESP
0042CD91 PUSH ECX*************************G的ASCII码值47入ECX
0042CD92 MOVZX EAX, BYTE PTR SS:[EBP+8]****扩展成00000047
0042CD96 MOV ECX, [ARG.2]****************赋ECX的初始值为0
0042CD99 MOV [LOCAL.1], EAX
0042CD9C MOV EAX, ECX********************ECX的值移入EAX
0042CD9E IMUL EAX, ECX********************EAX=EAX*ECX=0*0
0042CDA1 LEA EAX, DWORD PTR DS:[EAX+EAX*2+7]**EAX+EAX*2+7的值7给EAX
0042CDA5 IMUL EAX, ECX********************EAX=EAX*ECX=7*0
0042CDA8 ADD EAX, 0D*********************EAX=EAX+0D=D
0042CDAB IMUL EAX, ECX********************EAX=EAX*ECX=D*0=0
0042CDAE PUSH ESI*************************序列号位数F入栈!
0042CDAF LEA ESI, DWORD PTR DS:[ECX+5]
0042CDB2 PUSH ESI
0042CDB3 MOV [ARG.1], EAX
0042CDB6 LEA EAX, [ARG.1]
0042CDB9 PUSH 4
0042CDBB PUSH EAX
0042CDBC CALL SuperPIM.0042CD2E***********这个CALL也在计算,我实在不想跟进!
0042CDC1 PUSH ESI
0042CDC2 LEA EAX, [LOCAL.1]
0042CDC5 PUSH 4
0042CDC7 PUSH EAX
0042CDC8 CALL SuperPIM.0042CD5E**********这个CALL也是计算CALL,烦!不跟了!
0042CDCD MOV EAX, [ARG.1]
0042CDD0 ADD ESP, 18
0042CDD3 XOR EAX, [LOCAL.1]*************这里赋EAX的值38000002
0042CDD6 POP ESI
0042CDD7 LEAVE
0042CDD8 RETN
=========================================================================算法CALL(2)结束==================

0042CF34 POP ECX
0042CF35 POP ECX
0042CF36 PUSH 2B***************************常数2B入栈!
0042CF38 XOR EDX, EDX
0042CF3A POP ECX**************************把常数2B赋给ECX
0042CF3B DIV ECX**************************除,EAX/ECX=38000002/2B=014D6535,余数1B入EDX
0042CF3D MOV ECX, EDX*********************结果1B入ECX
0042CF3F ADD CL, 30***********************CL=CL+30=1B+30=4B(对应的字符串是K)
0042CF42 CMP CL, 39***********************比较是不是数字9
0042CF45 MOV BYTE PTR SS:[EBP-14], CL*****保存字符串K
0042CF48 JLE SHORT SuperPIM.0042CF55******小于就跳走!
0042CF4A CMP CL, 41***********************比较是不是A
0042CF4D JGE SHORT SuperPIM.0042CF55******大于就跳走
0042CF4F ADD CL, 0F6
0042CF52 MOV BYTE PTR SS:[EBP-14], CL
0042CF55 CMP EBX, [ARG.3]*****************跳到这里!比较0和14
0042CF58 JGE SHORT SuperPIM.0042CF67******大于等于就跳走!
0042CF5A PUSH [LOCAL.5]
0042CF5D LEA ECX, [LOCAL.4]
0042CF60 CALL SuperPIM.00417EAF
0042CF65 JMP SHORT SuperPIM.0042CFA5******无条件跳
0042CF67 MOV EAX, EBX
0042CF69 CDQ
0042CF6A IDIV [ARG.3]
0042CF6D MOVSX ECX, CL
0042CF70 PUSH 2B
0042CF72 MOV ESI, EDX
0042CF74 MOVSX EAX, BYTE PTR DS:[ESI+EDI]
0042CF78 LEA EAX, DWORD PTR DS:[EAX+ECX-60]
0042CF7C CDQ
0042CF7D POP ECX
0042CF7E IDIV ECX
0042CF80 ADD DL, 30
0042CF83 CMP DL, 39
0042CF86 MOV BYTE PTR SS:[EBP-14], DL
0042CF89 JLE SHORT SuperPIM.0042CF96
0042CF8B CMP DL, 41
0042CF8E JGE SHORT SuperPIM.0042CF96
0042CF90 ADD DL, 0F6
0042CF93 MOV BYTE PTR SS:[EBP-14], DL
0042CF96 PUSH [LOCAL.5]
0042CF99 LEA ECX, [LOCAL.4]
0042CF9C PUSH ESI
0042CF9D CALL SuperPIM.0042CE4B
0042CFA2 MOV ESI, [LOCAL.8]
0042CFA5 MOV EDI, [LOCAL.4]***************上面跳到这里!
0042CFA8 INC EBX*************************EBX加1
0042CFA9 CMP EBX, [LOCAL.6]**************比较1和14
0042CFAC JL SuperPIM.0042CF1B***********小于就跳,循环,序列号只有15位,这里循环20次,取完后又从第一位取出!
************************************循环结束后得到的值是:K3L2LPBDW1F2H4B8S0UY这就是我们要的注册码!
0042CFB2 MOV ECX, [ARG.1]
0042CFB5 LEA EAX, [LOCAL.4]
0042CFB8 PUSH EAX
0042CFB9 CALL SuperPIM.00401F36
0042CFBE LEA ECX, DWORD PTR DS:[EDI-10]
0042CFC1 CALL SuperPIM.00401B5D
0042CFC6 MOV ECX, [LOCAL.3]
0042CFC9 MOV EAX, [ARG.1]
0042CFCC POP EDI
0042CFCD POP ESI
0042CFCE POP EBX
0042CFCF MOV DWORD PTR FS:[0], ECX
0042CFD6 LEAVE
0042CFD7 RETN

希望能对大家有点启发,如果觉得这篇破文还行帮我顶一下吧!

转得人太多，都转得不知道出处了

Dean 发表于 2014-10-17 17:17
转得人太多，都转得不知道出处了

哈哈。沙发说的有道理

楼主好思维

转的多了证明这个作者写的不错！

好东西都是经历十八弯。

写的不错

我会说万能断点在win7下直接秒退OD？

配上图就更好了

感谢分享好教程啊