各位老师请指教。movsx,cdq是什么意思。另外这段程序的密码算法。谢谢 (2千字)
:bpx hmemcpyBreak due to BPX KERNEL!HMEMCPY (ET=517.75 milliseconds)
:bc *
:u cs:eip l 200
0167:0043B5C0 55 PUSH EBP
0167:0043B5C1 8BEC MOV EBP,ESP
0167:0043B5C3 56 PUSH ESI
0167:0043B5C4 8B7508 MOV ESI,[EBP+08]----输入密码
0167:0043B5C7 57 PUSH EDI
0167:0043B5C8 BF3412C72F MOV EDI,2FC71234
0167:0043B5CD 85F6 TEST ESI,ESI
0167:0043B5CF 743A JZ 0043B60B
0167:0043B5D1 8A06 MOV AL,[ESI]
0167:0043B5D3 84C0 TEST AL,AL
0167:0043B5D5 7434 JZ 0043B60B
0167:0043B5D7 53 PUSH EBX
0167:0043B5D8 BBF8110000 MOV EBX,000011F8
0167:0043B5DD 0FBEC0 MOVSX EAX,AL
0167:0043B5E0 50 PUSH EAX
0167:0043B5E1 E83F550600 CALL 004A0B25
0167:0043B5E6 8BC8 MOV ECX,EAX
0167:0043B5E8 8BC3 MOV EAX,EBX
0167:0043B5EA 99 CDQ
0167:0043B5EB F7F9 IDIV ECX
0167:0043B5ED 83C404 ADD ESP,04
0167:0043B5F0 81C390010000 ADD EBX,00000190
0167:0043B5F6 40 INC EAX
0167:0043B5F7 0FAFF8 IMUL EDI,EAX
0167:0043B5FA 8A4601 MOV AL,[ESI+01]
0167:0043B5FD 46 INC ESI
0167:0043B5FE 84C0 TEST AL,AL
0167:0043B600 75DB JNZ 0043B5DD
0167:0043B602 8BC7 MOV EAX,EDI
0167:0043B604 5B POP EBX
0167:0043B605 5F POP EDI
0167:0043B606 5E POP ESI
0167:0043B607 5D POP EBP
0167:0043B608 C20400 RET 0004
0167:0043B60B 8BC7 MOV EAX,EDI
0167:0043B60D 5F POP EDI
0167:0043B60E 5E POP ESI
0167:0043B60F 5D POP EBP
0167:0043B610 C20400 RET 0004
