init

x86_32/Example_Code/skeleton_mmap.c

@@ -0,0 +1,26 @@
+#include <string.h>
+#include <sys/mman.h>
+
+char shellcode[] = "";
+
+int main(int argc, char **argv)
+{
+  // Allocate some read-write memory
+  void *mem = mmap(0, sizeof(shellcode), PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
+
+  // Copy the shellcode into the new memory
+  memcpy(mem, shellcode, sizeof(shellcode));
+
+  // Make the memory read-execute
+  mprotect(mem, sizeof(shellcode), PROT_READ|PROT_EXEC);
+
+  // Call the shellcode
+  int (*func)();
+  func = (int (*)())mem;
+  (int)(*func)();
+
+  // Now, if we managed to return here, it would be prudent to clean up the memory:
+  munmap(mem, sizeof(shellcode));
+
+  return 0;
+}