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28 lines
489 B
C
28 lines
489 B
C
#include "obf.h"
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#include <stdbool.h>
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#define LOWER_HALFBYTE(x) ((x) & 0xF)
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#define UPPER_HALFBYTE(x) (((x) >> 4) & 0xF)
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void deobfuscate_str(char *str, uint64_t val)
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{
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uint8_t *dec_val = (uint8_t*)&val;
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int i = 0;
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while (*str != 0) {
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int pos = i / 2;
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bool bottom = (i % 2) == 0;
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uint8_t *ch = (uint8_t*)str;
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uint8_t xor = bottom ?
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LOWER_HALFBYTE(dec_val[pos]) :
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UPPER_HALFBYTE(dec_val[pos]);
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*ch ^= xor;
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if (++i == sizeof(uint64_t) * 2)
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i = 0;
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str++;
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}
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}
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