• C语言逆向小笔记[错误修正]

今天晚上做的，文字就不写了，没什么技术含量，免得被人拍砖，源代码和反汇编代码附上
lea     ebx, [esp+38h+var_28]  
 lea     edi, [esp+38h+var_20]   这两处应该是ESP+38代表了一个堆栈地址，+28H应该是代表了这个地址的起始大小，下面那个add     ebx, 2   和add     edi, 8是它们的内容+2和 +8
这两个寄存器里面存放的是Address，所以是地址+2和+8

引用:
 // C语言数组.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#define size 4
int main(int argc, char* argv[])
{
  short date[size];  //definition one short type Array
  short *ptr;    //definition one short type pointer
  short index;
  double bills[size];
  double  *ptf;
        ptr=date;     
  ptf=bills;
  printf("%23s %10s\n","short","double");
  for(index=0;index<size;index++)
    printf("pointer +%d: %10p %10p\n",index,ptr+index,ptf+index);
  return 0;
}
反汇编代码
代码:
.text:00401000 83 EC 28          sub     esp, 28h                        ; ESP=128,ESP-28=100
.text:00401003 53                push    ebx                             ; ESP-4,100-4=96
.text:00401004 55                push    ebp                             ; ESP-8,100-8=92
.text:00401005 56                push    esi                             ; ESP-C,100-C=88
.text:00401006 57                push    edi                             ; ESP-F,100-F=84
.text:00401007 68 5C 70 40 00    push    offset aDouble                  ; "double"
.text:0040100C 68 54 70 40 00    push    offset aShort                   ; "short"
.text:00401011 68 48 70 40 00    push    offset a23s10s                  ; "%23s %10s\n"
.text:00401016 E8 45 00 00 00    call    printf
.text:0040101B 83 C4 0C          add     esp, 0Ch                        ; renew wareroom，72+12=84，now wareroom originate address be EDI pointer of address
.text:0040101E 33 F6             xor     esi, esi                        ; esi zero
.text:00401020 8D 5C 24 10       lea     ebx, [esp+38h+var_28]           ; Load ESP+38h+28,This We Can Conceive Is Load ESP+38 of Store Address，at+28 Of Offset Address
.text:00401024 8D 7C 24 18       lea     edi, [esp+38h+var_20]           ; Load ESP+38H+20，This Me Can Conceive Is Load ESP+38 Of AnotherSide Address，Endure Look Next
.text:00401028 BD 04 00 00 00    mov     ebp, 4                          ; EBP Load Constant 4
.text:0040102D
.text:0040102D                   loc_40102D:                             ; CODE XREF: _main+45j
.text:0040102D 57                push    edi                             ; EDI Enter Corral ESP-4，84-4=80
.text:0040102E 53                push    ebx                             ; EBX Enter Corral ESP-8， 84-8=76
.text:0040102F 56                push    esi                             ; ESI Enter Corral ESP-C，84-C=72
.text:00401030 68 30 70 40 00    push    offset aPointerD10p10p          ; "pointer +%d: %10p %10p\n"
.text:00401035 E8 26 00 00 00    call    printf                          ; CALL Printf Function
.text:0040103A 83 C4 10          add     esp, 10h                        ; Resume Corral
.text:0040103D 46                inc     esi                             ; Inc ESI ESI Now Is ESI+1
.text:0040103E 83 C7 08          add     edi, 8                          ; Just Is Use Lea Load Into EDI Address，Add EDI+8 Equal EDI Address+8
.text:00401041 83 C3 02          add     ebx, 2                          ; Ditto
.text:00401044 4D                dec     ebp                             ; Ebp-1
.text:00401045 75 E6             jnz     short loc_40102D                ; Unknown Not Learned How This
.text:00401047 5F                pop     edi
.text:00401048 5E                pop     esi
.text:00401049 5D                pop     ebp
上传的附件 C语言数组.zip