dobin-ShellcodeObfuscationLab/lab_results/random_shellcode/jigsaw_work.c

#include <windows.h>
#include <stdio.h>


int main(void)
{
	

	unsigned char jigsaw[42] = { 0x00, 0x00, 0x74, 0x6f, 0x73, 0x00, 0x7a, 0x00, 0x00, 0x00, 0x6e, 0xff, 0x74, 0x6e, 0x32, 0x00, 0x00, 0x69, 0x00, 0x6f, 0x00, 0x00, 0x32, 0x00, 0x77, 0x00, 0x73, 0x00, 0x00, 0x65, 0x73, 0x00, 0x7a, 0x65, 0x00, 0x00, 0x00, 0x77, 0x65, 0xfe, 0x00, 0x69 };

int positions[42] = { 17, 3, 8, 22, 30, 19, 32, 33, 37, 13, 14, 0, 2, 28, 38, 15, 7, 12, 5, 36, 41, 25, 40, 9, 20, 11, 16, 29, 23, 24, 6, 31, 18, 10, 39, 27, 21, 34, 4, 1, 35, 26 };


unsigned char shellcode[42] = { 0x00 };
int position;

// Reconstruct the payload
for (int idx = 0; idx < sizeof(positions) / sizeof(positions[0]); idx++) {
	position = positions[idx];
	shellcode[position] = jigsaw[idx];
}



	int idx = 0;
	while ( idx < sizeof(shellcode))
	{
		if (idx == (sizeof(shellcode) - 1) )
		{
			printf("0x%02x ", (unsigned char)shellcode[idx]);
		}
		else
		{
			printf("0x%02x, ", (unsigned char)shellcode[idx]);
		}
		idx++;
	}
}