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23 lines
626 B
C
23 lines
626 B
C
3 years ago
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#include <stdio.h>
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#include <stdlib.h>
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#define N 75000
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int main() {
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unsigned char *buf = (unsigned char *)malloc(N * sizeof(char));
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unsigned char check[4] = {0xd9, 0x45, 0x08, 0xd9};
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size_t n = fread(buf, sizeof(char), N, stdin);
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for(size_t i = 0; i < n - 3; i++){
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if(buf[i] == check[0] && buf[i + 1] == check[1] && buf[i + 2] == check[2] && buf[i + 3] == check[3]) {
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buf[i + 4] = 0xeb;
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buf[i + 5] = 0x90;
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buf[i + 6] = 0xd8;
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buf[i + 7] = 0xc9;
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break;
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}
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}
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fwrite(buf, sizeof(char), n, stdout);
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free(buf);
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return 0;
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}
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