string_decoder.c

#include <stdio.h>

int main(int argc, char * argv[]) {
	/* Extracted from 5.6 ioncube loader */
	char encryption_data[] = {
		0x25,
		0x68,
		0xd3,
		0xc2,
		0x28,
		0xf2,
		0x59,
		0x2e,
		0x94,
		0xee,
		0xf2,
		0x91,
		0xac,
		0x13,
		0x96,
		0x95
	};

	/* Replace with your dataz. Remember not to include the 0x00 at the end */
	char encrypted_string[] = {
		0x9b,
		0x36,
		0x40,
		0xd7,
		0x9b,
		0x90,
		0xf4,
		0x8c,
		0x56,
		0xe0,
		0xf0,
		0x4b,
		0x1c,
		0xf3,
		0x8a,
		0x49,
		0x9c,
		0x3d,
		0x42,
		0xf1,
		0x9c,
		0xf2
	};

	int size = sizeof(encrypted_string);
	for (int i = 0; i < size; i++) {
		encrypted_string[i] = encrypted_string[i] ^ encryption_data[(size + i - 1) % sizeof(encryption_data)];
	}

	printf("%s\r\n", encrypted_string);
}