Assembly->c언어 변환

(gdb) disass main
Dump of assembler code for function main:
   0x0804852d <+0>:   push   ebp
   0x0804852e <+1>:   mov    ebp,esp
   0x08048530 <+3>:   and    esp,0xfffffff0
   0x08048533 <+6>:   sub    esp,0x420
   0x08048539 <+12>:   mov    eax,DWORD PTR [ebp+0xc]
   0x0804853c <+15>:   mov    DWORD PTR [esp+0xc],eax
   0x08048540 <+19>:   mov    eax,gs:0x14
   0x08048546 <+25>:   mov    DWORD PTR [esp+0x41c],eax
   0x0804854d <+32>:   xor    eax,eax
   0x0804854f <+34>:   cmp    DWORD PTR [ebp+0x8],0x1
   0x08048553 <+38>:   jg     0x8048592 <main+101>
   0x08048555 <+40>:   mov    eax,DWORD PTR [ebp+0x8]
   0x08048558 <+43>:   mov    DWORD PTR [esp+0x4],eax
   0x0804855c <+47>:   mov    DWORD PTR [esp],0x8048680  // "argc is %d\n"
   0x08048563 <+54>:   call   0x80483b0 <printf@plt>
   0x08048568 <+59>:   mov    eax,DWORD PTR [esp+0xc]
   0x0804856c <+63>:   mov    eax,DWORD PTR [eax]
   0x0804856e <+65>:   mov    DWORD PTR [esp],eax
   0x08048571 <+68>:   call   0x8048400 <strlen@plt>
   0x08048576 <+73>:   mov    edx,DWORD PTR [esp+0xc]
   0x0804857a <+77>:   mov    edx,DWORD PTR [edx]
   0x0804857c <+79>:   mov    DWORD PTR [esp+0x8],eax
---Type <return> to continue, or q <return> to quit---
   0x08048580 <+83>:   mov    DWORD PTR [esp+0x4],edx
   0x08048584 <+87>:   lea    eax,[esp+0x1c]
   0x08048588 <+91>:   mov    DWORD PTR [esp],eax
   0x0804858b <+94>:   call   0x80483c0 <memcpy@plt>
   0x08048590 <+99>:   jmp    0x80485ae <main+129>
   0x08048592 <+101>:   mov    DWORD PTR [esp+0x8],0x400
   0x0804859a <+109>:   mov    DWORD PTR [esp+0x4],0x0
   0x080485a2 <+117>:   lea    eax,[esp+0x1c]
   0x080485a6 <+121>:   mov    DWORD PTR [esp],eax
   0x080485a9 <+124>:   call   0x8048420 <memset@plt>
   0x080485ae <+129>:   lea    eax,[esp+0x1c]
   0x080485b2 <+133>:   mov    DWORD PTR [esp],eax
   0x080485b5 <+136>:   call   0x80483e0 <puts@plt>
   0x080485ba <+141>:   mov    DWORD PTR [esp],0x804868c // " buffer over flow\n"
   0x080485c1 <+148>:   call   0x80483e0 <puts@plt>
   0x080485c6 <+153>:   mov    eax,0x0
   0x080485cb <+158>:   mov    ecx,DWORD PTR [esp+0x41c]
   0x080485d2 <+165>:   xor    ecx,DWORD PTR gs:0x14
   0x080485d9 <+172>:   je     0x80485e0 <main+179>
   0x080485db <+174>:   call   0x80483d0 <__stack_chk_fail@plt>
   0x080485e0 <+179>:   leave  
   0x080485e1 <+180>:   ret    
End of assembler dump.

int main()
{
	char buf[0x400];
	0x20byte;
 
	if(argc > 1)			 main+34,38
	{						
		printf("argc is %d\n", argc); main+47
		memcpy(,,strlen());
 
		goto abcd: 		main+99
	}
 
	memset(buffer, 0, 400);		main+101
 
	puts();
 
	abcd:
		puts("buffer over flow");
 
}