findsdemopass.c

sdemo加密录像密码破解

#include "windows.h"

main()
{
	char s1[]="Clayman";
	char s2[]="CW1AACKAP0ZAGKK";
	char s3[]="FZRHK01WGTPQSAVC";
	char s4[]="Guest";
	int s2len=strlen(s2);
    int i,j,k,l,m,n,x,y,z,al,dl,dl1,cl,count,count1,oy;

	for(i=0;s3[i]!=s2[0]&&i<16;i++);
	printf("i is %d\n",i);
	if(i<16)
	{
		j=15-i;
		k=strlen(s1);
		l=k%7;
		if(l==0)
		{
			l=5;
		}
		printf("l is %d\n",l);
		m=j%l;
		n=(char)s4[m];
		printf("n is %c\n",n);
		x=n%0x10;
		printf("x is %d\n",x);
		printf("s3[x] is %c\ns2[1] is %c\n",s3[x],s2[1]);
		if((char)s3[x]==(char)s2[1])
		{
		y=(s2len-0x3)>>0x1;
	    printf("y is %d\n",y);
		for(z=0;z<y;z++)
		{
			for(count=0;((char)s3[count]!=(char)s2[3+2*z])&&count<16;count++);
			if(count<16)
			{
				    /*00401F2E  |.  2BC6          |SUB EAX,ESI
					00401F30  |.  6A 10         |PUSH 10
					00401F32  |.  03C7          |ADD EAX,EDI
					00401F34  |.  59            |POP ECX
					00401F35  |.  99            |CDQ
					00401F36  |.  F7F9          |IDIV ECX
					00401F38  |.  8855 0F       |MOV BYTE PTR SS:[EBP+F],DL*/
					
					
				count-=j;
				count+=0x3E80;
				dl=count%0x10;
			}
			else
			{
			dl=0;
			}
			    /*00401F41  |> \8A0B          |MOV CL,BYTE PTR DS:[EBX]
				00401F43  |.  33C0          |XOR EAX,EAX*/
			cl=	(char)s2[2+2*z];
            for(count1=0;((char)s3[count1]!=cl)&&count1<16;count1++);
			if(count1<16)
			{
				    /*00401F58  |.  2BC6          |SUB EAX,ESI
					  00401F5A  |.  6A 10         |PUSH 10
					  00401F5C  |.  03C7          |ADD EAX,EDI
					  00401F5E  |.  59            |POP ECX
					  00401F5F  |.  99            |CDQ
					  00401F60  |.  F7F9          |IDIV ECX

					  */
					
					
				count1-=j;
				count1+=0x3E80;
				dl1=count1%0x10;
			}
			else
			{
				dl1=0;
			}
			al=dl1<<4;
			al+=dl;
			s2[z]=al;
			j+=dl1;
		}
		printf("password is:");
		for(oy=0;oy<y;oy++)
		{
			printf("%c",s2[oy]);
		}
		}
		
	}
	printf("\n:)Find it\n");
	
}