27 lines
893 B
C
27 lines
893 B
C
#include <stdio.h>
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#include <stdint.h>
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#include <unistd.h>
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#include <sys/mman.h>
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// Define the shellcode
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char code[] = "\x31\xc0\x99\xb2\x0a\xff\xc0\x89\xc7\x48\x8d\x35\x12\x00\x00\x00\x0f\x05\xb2\x2a\x31\xc0\xff\xc0\xf6\xe2\x89\xc7\x31\xc0\xb0\x3c\x0f\x05\x2e\x2e\x57\x4f\x4f\x44\x59\x2e\x2e\x0a";
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// Declare a function pointer with no arguments and no return value
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typedef void (*ShellcodeFunc)();
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int main() {
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// Create a function pointer of the appropriate type and point it to the shellcode
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ShellcodeFunc func = (ShellcodeFunc)code;
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// Make the memory containing the shellcode executable
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// Using a reasonable default page size
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size_t pagesize = 4096; // 4KB, a common page size
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uintptr_t page_start = (uintptr_t)code & ~(pagesize - 1);
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mprotect((void *)page_start, pagesize, PROT_READ | PROT_EXEC);
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// Call the shellcode
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func();
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return 0;
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}
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