pwnium_ctf_rev150.c

#include<stdio.h>

char	flag[]={"Itofrjxb2`..c.2.6031]g6b1gg0^)b11cb^^-]z"};

int	main(){
	int	eax,edx,ecx;
	int	tick=0;
	int	i;
	
	for(tick=0;tick<3;){	// IRQ 0 interrupt.
		eax=tick;
		edx=eax+1;
		tick=edx;
		printf("tick:%d\n",eax);
		ecx=tick;
		for(eax=0;eax!=0x28;eax++){ // decode flag.
			edx=flag[eax]^tick;
			edx++;
			printf("%c",edx);
			flag[eax]=(char)edx;
		}
		printf("\n",flag);
	}
	return	0;
}