pwnable练习之collision

#include <string.h>
unsigned long hashcode = 0x21DD09EC;
unsigned long (const char* p){
	int* ip = (int*)p;
	int i;
	int res=0;
	for(i=0; i<5; i++){
		res += ip[i];
	}
	return res;
}
int main(int argc, char* argv[]){
	if(argc<2){
		printf("usage : %s [passcode]n", argv[0]);
		return 0;
	}
	if(strlen(argv[1]) != 20){
		printf("passcode length should be 20 bytesn");
		return 0;
	}
	if(hashcode == check_password( argv[1] )){
		system("/bin/cat flag");
		大专栏  pwnable练习之collisionan class="keyword">return 0;
	}
	else
		printf("wrong passcode.n");
	return 0;
}

int* ip = (int*)p;